Forced circulation evaporation crystallizer

Abstract

The utility model relates to the technical field of metal scraps, and discloses a forced circulation evaporation crystallizer which comprises a crystallizer body connected with a plurality of pipelines. The adjusting assembly is arranged on the conveying pipeline of the crystallizer main body, the adjusting assembly is used for ensuring the pressure difference and comprises a mounting pipe, a fixed ring and a movable ring, the mounting pipe is fixedly connected with the conveying pipeline on the crystallizer main body, the fixed ring is fixedly connected with the inner wall of the mounting pipe, and the movable ring is elastically connected with the inner wall of the mounting pipe; the fixed ring and the movable ring abut against each other, fixing blocks are symmetrically arranged in the mounting pipe, each fixing block is fixedly connected with the inner wall of the mounting pipe, metal scrap liquid inside and outside the crystallizer body is isolated through cooperation of parts in the adjusting assembly, and the phenomenon of liquid leakage caused by abrasion of a valve used for a long time is avoided; and the internal and external pressure differences of the crystallizer main body are gradually the same.

Description

Technical Field

[0001] This utility model belongs to the field of metal waste technology, specifically, it relates to a forced circulation evaporation crystallizer. Background Technology

[0002] Forced circulation evaporation crystallizers are high-efficiency, continuous crystal slurry circulation crystallization equipment, widely used in chemical, pharmaceutical, and environmental protection industries. They are especially suitable for treating high-viscosity solutions that are prone to scaling or contain crystals (such as: "zero discharge" projects for high-salt wastewater containing sodium chloride and ammonium sulfate in the chlor-alkali industry; production of inorganic salt crystals such as sodium chloride and potassium chloride; or treatment of high-viscosity organic solvent solutions).

[0003] A document with publication number (CN217593842U) discloses a forced circulation MVR evaporator crystallizer, including a tank body. A support column is located on the lower side of the tank body, and a motor is located on the upper side. A reducer is located between the motor and the tank body. One end of the reducer has a rotating shaft that extends into the interior of the tank body. One end of the rotating shaft has stirring teeth. A feed pipe is located on the upper side of the tank body, and a second discharge pipe is located on the lower side. One end of the second discharge pipe is divided into two paths: a reflux pipe and a first discharge pipe. A circulation pump is installed on the reflux pipe, and the other end of the reflux pipe is connected to the inlet pipe. By setting up the reflux pipe and the circulation pump, the low-concentration raw liquid can be forcibly circulated, thereby improving the efficiency of evaporation and crystallization, and also preventing crystallization from occurring inside the tank body.

[0004] In the crystallization process of the above-mentioned device for metal waste liquid, the pressure difference between the inside and outside of the tank is inconsistent, which requires the use of valves to separate the internal and external pipelines. However, the valves are prone to wear and leakage due to the long-term influence of the internal and external pressure difference and the metal substances contained in the metal waste liquid. As a result, the pressure difference between the inside and outside of the tank gradually becomes the same during the crystallization process, which affects the crystallization.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To solve the technical problem of internal and external pressure difference in the processing of molten metal waste, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A forced circulation evaporation crystallizer includes a crystallizer body with multiple pipes connected to it; and an adjustment component disposed on the delivery pipes of the crystallizer body. The adjustment component is used to ensure a pressure difference. The adjustment component includes an installation pipe, a fixed ring, and a movable ring. The installation pipe is fixedly connected to the delivery pipes on the crystallizer body, the fixed ring is fixedly connected to the inner wall of the installation pipe, and the movable ring is elastically connected to the inner wall of the installation pipe, with the fixed ring and the movable ring abutting against each other.

[0008] In a preferred embodiment of this utility model, fixing blocks are symmetrically arranged inside the installation tube, each fixing block is fixedly connected to the inner wall of the installation tube, and a support rod is fixedly connected between the fixing blocks.

[0009] In a preferred embodiment of this utility model, the fixing ring is provided with an array of connecting rods, each connecting rod is fixedly connected to the fixing ring, and each connecting rod is fixedly connected to the same secondary fixing ring, which is fixedly connected to the support rod.

[0010] In a preferred embodiment of this utility model, a secondary movable ring is provided in the middle of the movable ring. The secondary movable ring is fixedly connected to the movable ring through a connecting rod, and the gaps between the secondary movable ring, the fixed ring, and the secondary fixed ring are in close contact.

[0011] In a preferred embodiment of this utility model, the auxiliary movable ring is slidably connected to the support rod, and a second spring is slidably connected to the support rod. The ends of the second spring are respectively fixedly connected to the corresponding fixed blocks and the auxiliary movable ring.

[0012] In a preferred embodiment of this utility model, an adjusting tube is fixedly connected inside the mounting tube, and a baffle is fixedly connected to the end of each adjusting tube. The baffles are staggered and each baffle is crescent-shaped.

[0013] In a preferred embodiment of the present invention, a guide plate is provided between the regulating pipe and the baffle, and each guide plate is inclined and is positioned opposite to the wall of the regulating pipe and the baffle.

[0014] In a preferred embodiment of the present invention, each of the guide plates is provided with multiple grooves, and a first spring is provided between the guide plate and the regulating pipe and the baffle. The end of each first spring is fixedly connected to the corresponding guide plate, regulating pipe and baffle.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This forced circulation evaporation crystallizer, by adjusting the coordination of the internal components, isolates the metal waste liquid inside and outside the crystallizer body, avoiding leakage caused by wear of valves after long-term use, and preventing the gradual equalization of the pressure difference inside and outside the crystallizer body.

[0017] 2. In this forced circulation evaporation crystallizer, the molten metal waste is guided by the crescent shape of the baffle. Under the action of the arc surface, the molten metal waste is diffused to the surrounding area. During the diffusion process, the range of diffusion of the molten metal waste is limited, reducing the damage to the internal components caused by the impact of the molten metal waste. In addition, the baffle reduces the area of ​​the regulating pipe port. The diffused molten metal waste forms a positive suction vortex through the reduced port of the regulating pipe, increasing the flow rate of the molten metal waste and rapidly transporting the molten metal waste.

[0018] 3. In this forced circulation evaporation crystallizer, after the metal waste liquid comes into contact with the guide plate, the flow direction of the metal waste liquid is guided by the grooves on the guide plate, so as to avoid the eddy effect entering the regulating pipe and affecting the flow direction and flow rate of the metal waste liquid in the regulating pipe.

[0019] 4. In this forced circulation evaporation crystallizer, after the vortex of the metal waste liquid enters the regulating pipe, the metal waste liquid directly impacts the guide plate. The guide plate applies the force it receives to the first spring. After the first spring is compressed and deformed, the deformation force is applied to the guide plate. The reverse force applied by the first spring to the guide plate buffers the force of the metal waste liquid, avoiding the metal waste liquid from scouring the corresponding baffle at high speed for a long time and causing damage to the baffle.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram:

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0023] Figure 2 This is a cross-sectional view of the installation pipe of this utility model;

[0024] Figure 3 This is a three-dimensional schematic diagram of the regulating tube of this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the regulating tube of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure between the fixed ring and the movable ring of this utility model.

[0027] In the diagram: 1. Crystallizer body; 2. Mounting pipe; 3. Adjusting pipe; 31. Guide plate; 32. Baffle; 33. First spring; 4. Fixed ring; 41. Movable ring; 42. Connecting rod; 43. Secondary fixed ring; 44. Secondary movable ring; 5. Fixed block; 51. Support rod; 52. Second spring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0029] Please see Figure 1-5 A forced circulation evaporation crystallizer includes a crystallizer body 1 with multiple pipes connected to it; and an adjustment component installed on the delivery pipes of the crystallizer body 1. The adjustment component is used to ensure pressure difference and includes an installation pipe 2, a fixed ring 4, and a movable ring 41. The installation pipe 2 is fixedly connected to the delivery pipes on the crystallizer body 1, the fixed ring 4 is fixedly connected to the inner wall of the installation pipe 2, and the movable ring 41 is elastically connected to the inner wall of the installation pipe 2. The fixed ring 4 and the movable ring 41 abut against each other. Through the cooperation of the internal components of the adjustment component, the metal waste liquid inside and outside the crystallizer body 1 is isolated, avoiding leakage caused by wear of valves after long-term use, and preventing the pressure difference inside and outside the crystallizer body 1 from gradually becoming the same.

[0030] The installation tube 2 is symmetrically equipped with fixing blocks 5, each of which is fixedly connected to the inner wall of the installation tube 2. Support rods 51 are fixedly connected between the fixing blocks 5. Connecting rods 42 are arrayed on the fixing ring 4, each of which is fixedly connected to the fixing ring 4. Each connecting rod 42 is fixedly connected to the same secondary fixing ring 43, which is fixedly connected to the support rod 51. A secondary movable ring 44 is located in the middle of the movable ring 41, and is fixedly connected to the movable ring 41 via a connecting rod. The secondary movable ring 44 is in close contact with the gaps between the fixed ring 4 and the secondary fixing ring 43. The secondary movable ring 44 is slidably connected to the support rod 51. A second spring 52 is slidably connected to the support rod 51, and the ends of the second spring 52 are fixedly connected to the corresponding fixing block 5 and the secondary movable ring 44. When the molten metal is accelerated from one end of the regulating tube 3, the molten metal directly impacts the fixing ring 4 and the movable ring 41. The fixed ring 4 and the secondary fixed ring 43 are fixed in position. The movable ring 41 is pushed by the impact of the molten metal. The movable ring 41 drives the secondary movable ring 44, which compresses the second spring 52. At this time, the movable ring 41, the secondary movable ring 44 are separated from the fixed ring 4 and the connecting rod 42. The molten metal enters the crystallizer body 1 through the gap. After the molten metal is transported, the movable ring 41 and the secondary movable ring 44 lose the power brought by the impact of the molten metal. The deformation force generated by the compression of the second spring 52 is applied to the secondary movable ring 44. The secondary movable ring 44 drives the movable ring 41 to move. The gap between the movable ring 41 and the fixed ring 4 and the secondary fixed ring 43 is in close contact, which isolates the molten metal inside and outside the crystallizer body 1. This avoids the leakage caused by the wear of the valve after long-term use, which would lead to the gradual equalization of the pressure difference inside and outside the crystallizer body 1.

[0031] The movable ring 41 is made entirely of rubber. The gap between the movable ring 41, the fixed ring 4, and the secondary fixed ring 43 is in close contact to complete the sealing and plugging operation. Since the movable ring 41 is made entirely of rubber, the sealing and plugging effect of the movable ring 41 on the device is extended under the impact and wear of the metal waste liquid.

[0032] The installation pipe 2 is fixedly connected to an adjusting pipe 3. Each end of the adjusting pipe 3 is fixedly connected to a baffle 32, which are staggered and crescent-shaped. A guide plate 31 is positioned between the adjusting pipe 3 and the baffle 32, with each guide plate 31 inclined and facing the walls of the adjusting pipe 3 and the baffle 32. Each guide plate 31 has multiple grooves. A first spring 33 is positioned between the guide plate 31, the adjusting pipe 3, and the baffle 32, with each end of the first spring 33 fixedly connected to the corresponding guide plate 31, adjusting pipe 3, and baffle 32. When molten metal enters from the installation pipe 2, it passes through one end of the adjusting pipe 3. The molten metal is guided by the crescent shape of the baffle 32, and under the action of the arc surface, it diffuses to the surrounding area. During this diffusion, the range of diffusion is limited, reducing the impact of the molten metal on internal components. Furthermore, the baffle 32 reduces the area of ​​the port of the regulating pipe 3. The diffused molten metal passes through the reduced port of the regulating pipe 3, forming a positive suction vortex, which increases the flow velocity of the molten metal and transports it quickly. After the molten metal comes into contact with the guide plate 31, the groove on the guide plate 31 guides the flow direction of the molten metal, preventing the vortex effect from entering the regulating pipe 3 and affecting the flow direction and velocity of the molten metal in the regulating pipe 3. After the vortex of the molten metal enters the regulating pipe 3, the molten metal directly impacts the guide plate 31. The guide plate 31 applies the force it receives to the first spring 33. The first spring 33 is compressed and deformed, and then applies the deformation force to the guide plate 31. The reverse force applied by the first spring 33 to the guide plate 31 buffers the force of the molten metal, preventing the molten metal from scouring the corresponding baffle 32 at high speed for a long time and causing damage to the baffle 32.

[0033] It is worth noting that the crystallizer body 1 includes a tank, a support column on the lower side of the tank, a motor on the upper side of the tank, a reducer between the motor and the tank, a rotating shaft at one end of the reducer extending into the interior of the tank, a stirring tooth at one end of the rotating shaft, a feed pipe on the upper side of the tank, and a discharge pipe 2 on the lower side of the tank. The discharge pipe 2 is divided into two paths at one end, namely a reflux pipe and a discharge pipe 1. A circulation pump is installed on the reflux pipe, and the other end of the reflux pipe is connected to the liquid inlet pipe. The crystallizer body 1 has been disclosed in a forced circulation MVR evaporation crystallizer (CN217593842U) in the prior art, and will not be described in detail here.

[0034] Working principle: When the molten metal enters from the installation pipe 2, it passes through one end of the regulating pipe 3. The molten metal is guided by the crescent shape of the baffle 32. Under the action of the arc surface, the molten metal diffuses to the surrounding area. During the diffusion process, the range of diffusion of the molten metal is limited, reducing the damage to internal components caused by the impact of the molten metal. Furthermore, the baffle 32 reduces the area of ​​the port of the regulating pipe 3. The diffused molten metal passes through the reduced port of the regulating pipe 3, forming a positive suction vortex, increasing the flow rate of the molten metal, and rapidly transporting the molten metal. After the molten metal comes into contact with the guide plate 31, it is drawn through the guide plate 31. The grooves guide the flow direction of the molten metal, preventing eddy currents from entering the regulating pipe 3 and affecting the flow direction and velocity of the molten metal within the regulating pipe 3. Furthermore, after the eddy currents of the molten metal enter the regulating pipe 3, the molten metal directly impacts the guide plate 31. The guide plate 31 applies the force it receives to the first spring 33. The first spring 33, after being compressed and deformed, applies the deformation force to the guide plate 31. The reverse force applied by the first spring 33 to the guide plate 31 buffers the force of the molten metal, preventing the molten metal from continuously and at high speed scouring the corresponding baffle 32 and causing damage. When the molten metal... After acceleration from one end of the regulating pipe 3, the molten metal directly impacts the fixed ring 4, the movable ring 41, and the auxiliary fixed ring 43. The fixed ring 4 and the auxiliary fixed ring 43 remain in their fixed positions. The movable ring 41 is pushed by the impact of the molten metal, which in turn drives the auxiliary movable ring 44. The auxiliary movable ring 44 compresses the second spring 52. At this point, the movable ring 41, the auxiliary movable ring 44, and the fixed ring 4 and connecting rod 42 separate. The molten metal enters the crystallizer body 1 through the gap. After the molten metal is transported, the movable ring 41 and the auxiliary movable ring 44 lose the power from the impact of the molten metal. The deformation force generated by the compression of the second spring 52 is applied to the auxiliary movable ring 44. On ring 44, the auxiliary movable ring 44 drives the movable ring 41 to move. The gap between the movable ring 41 and the fixed ring 4 and the auxiliary fixed ring 43 is in close contact, isolating the metal waste liquid inside and outside the crystallizer body 1, avoiding leakage caused by wear of the valve after long-term use, and preventing the pressure difference inside and outside the crystallizer body 1 from gradually becoming the same. The movable ring 41 is made entirely of rubber. The gap between the movable ring 41 and the fixed ring 4 and the auxiliary fixed ring 43 is in close contact to complete the sealing and blocking operation. With the movable ring 41 being made entirely of rubber, the sealing and blocking effect of the movable ring 41 on the device is extended under the impact and wear of the metal waste liquid.

[0035] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A forced circulation evaporation crystallizer, characterized in that, include: The crystallizer body (1) has multiple pipes connected to it; The regulating component is set on the conveying pipe of the crystallizer body (1). The regulating component is used to ensure the pressure difference. The regulating component includes an installation pipe (2), a fixed ring (4) and a movable ring (41). The installation pipe (2) is fixedly connected to the conveying pipe on the crystallizer body (1). The fixed ring (4) is fixedly connected to the inner wall of the installation pipe (2). The movable ring (41) is elastically connected to the inner wall of the installation pipe (2), and the fixed ring (4) and the movable ring (41) abut against each other.

2. The forced circulation evaporation crystallizer according to claim 1, characterized in that, The mounting tube (2) is symmetrically provided with fixing blocks (5), each fixing block (5) is fixedly connected to the inner wall of the mounting tube (2), and a support rod (51) is fixedly connected between the fixing blocks (5).

3. The forced circulation evaporation crystallizer according to claim 2, characterized in that, The fixed ring (4) is provided with an array of connecting rods (42), each connecting rod (42) is fixedly connected to the fixed ring (4), and each connecting rod (42) is fixedly connected to the same secondary fixed ring (43), which is fixedly connected to the support rod (51).

4. The forced circulation evaporation crystallizer according to claim 1, characterized in that, A secondary movable ring (44) is provided in the middle of the movable ring (41). The secondary movable ring (44) is fixedly connected to the movable ring (41) through a connecting rod. The gap between the secondary movable ring (44) and the fixed ring (4) and the secondary fixed ring (43) is in close contact.

5. The forced circulation evaporation crystallizer according to claim 4, characterized in that, The secondary movable ring (44) is slidably connected to the support rod (51), and a second spring (52) is slidably connected to the support rod (51). The ends of the second spring (52) are respectively fixedly connected to the corresponding fixed block (5) and the secondary movable ring (44).

6. The forced circulation evaporation crystallizer according to claim 1, characterized in that, An adjusting pipe (3) is fixedly connected inside the installation pipe (2). Each end of the adjusting pipe (3) is fixedly connected to a baffle (32). The baffles (32) are staggered and each baffle (32) is crescent-shaped.

7. The forced circulation evaporation crystallizer according to claim 6, characterized in that, A guide plate (31) is provided between the regulating pipe (3) and the baffle (32). Each guide plate (31) is inclined and is positioned opposite to the wall of the regulating pipe (3) and the baffle (32).

8. The forced circulation evaporation crystallizer according to claim 7, characterized in that, Each of the aforementioned guide plates (31) has multiple grooves. A first spring (33) is provided between the guide plate (31), the regulating pipe (3), and the baffle (32). The end of each first spring (33) is fixedly connected to the corresponding guide plate (31), the regulating pipe (3), and the baffle (32).

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