Fractional cooling crystallization apparatus for ammonium salt filtrate

Abstract

The utility model provides a hierarchical cooling crystallization device for ammonium salt filtrate relates to ammonium salt filtrate crystallization field, the utility model discloses a reaction kettle is placed on the ground with the help of support leg to the whole provides the support, the bottom of reaction kettle is installed with the discharge pipe, the cover plate is detachably installed with the help of buckle in the top of reaction kettle, the surface fixed connection of cover plate has the feed pipe, the cooling box is installed in the outside of reaction kettle, the inside fixed connection of reaction kettle's cambered surface has the cooling pipe, the inside fixed connection of cooling box has the water pump, wherein the output of water pump and cooling pipe intercommunication, the stirring shaft rotatory connection is in the bottom of cover plate, wherein the stirring shaft can rotate in the inside of reaction kettle, the utility model discloses a cleaning device reaches the effect that the inside wall of reaction kettle is cleaned, avoids ammonium salt filtrate crystallization to stick in the inside wall of reaction kettle, thereby influences the situation that ammonium salt filtrate cannot fully contact with the coolant happens.

Description

Technical Field

[0001] This utility model relates to the field of ammonium salt filtrate crystallization, and more particularly to a cooling crystallization device. Background Technology

[0002] The ammonium salt recovered from the wastewater is centrifuged to obtain a filtrate. The filtrate still contains some ammonium salt, so the ammonium salt filtrate needs to be cooled and crystallized to recover the ammonium salt from the filtrate.

[0003] In existing technologies, when crystallizing ammonium salts, the filtrate inside the reaction vessel needs to be cooled by a coolant to accelerate the crystallization process. However, the crystallized ammonium salts tend to stick to the inner wall of the reaction vessel, which affects the contact between the filtrate and the coolant, resulting in poor crystallization efficiency. Utility Model Content

[0004] This utility model proposes a cooling crystallization device to overcome the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cooling crystallization device, comprising a reaction vessel, the reaction vessel being supported by legs placed on the ground, a discharge pipe installed at the bottom of the reaction vessel, a cover plate being detachably installed on the top of the reaction vessel by means of a snap fastener, a feed pipe being fixedly connected to the surface of the cover plate, a cooling box being installed on the outside of the reaction vessel, a cooling pipe being fixedly connected inside the arc surface of the reaction vessel, a water pump being fixedly connected inside the cooling box, wherein the output end of the water pump is connected to the cooling pipe, a stirring shaft being rotatably connected to the bottom of the cover plate, wherein the stirring shaft can rotate inside the reaction vessel, and a cleaning device contacting an auxiliary device being installed on the arc surface of the stirring shaft, wherein the cleaning device can clean the inner wall of the reaction vessel.

[0006] The effects achieved by the above components are as follows: Before crystallizing the ammonium salt filtrate, the operator first installs the cleaning device on the arc surface of the stirring shaft using an auxiliary device. Then, the operator places the cover plate on the top of the reaction vessel and secures it with clips. The ammonium salt filtrate is then fed into the reaction vessel through the feed pipe. The operator turns on the water pump in the cooling tank, which sends the coolant from the cooling tank into the cooling pipe. The coolant in the cooling pipe cools the ammonium salt filtrate in the reaction vessel. At the same time, the operator turns on the motor on the stirring shaft. The motor drives the stirring shaft to rotate through the reducer. The stirring shaft stirs the ammonium salt filtrate inside the reaction vessel, while the cleaning device on the stirring shaft cleans the inner wall of the reaction vessel to prevent heat transfer between the coolant in the cooling pipe and the ammonium salt filtrate.

[0007] Preferably, the cleaning device includes two mounting plates, which are fixedly connected to the arc surface of the stirring shaft. A fixing groove is provided on one side of each mounting plate, and a fixing plate is mounted on the mounting plate through the fixing groove. The fixing plate is detachably installed in the fixing groove of the mounting plate with the aid of an auxiliary device. One end of each of the two fixing plates is fixedly connected to the same movable plate. Two first springs are fixedly connected to one side of the movable plate, and one end of each first spring is fixedly connected to the cleaning plate.

[0008] The effect achieved by the above components is as follows: When it is necessary to clean the inner wall of the reaction vessel, the operator moves the fixing plate, which is inserted into the fixing groove of the mounting plate. Then, the cleaning plate is moved in the direction of the moving plate, and the first spring deforms. At this time, the operator puts the cover plate on the inside of the reaction vessel and releases the cleaning plate. Under the action of the return force of the first spring, the cleaning plate is in close contact with the inner wall of the reaction vessel. When the motor drives the stirring shaft to rotate with the help of the reducer, the stirring shaft drives the moving plate and the cleaning plate to rotate. The cleaning plate achieves the effect of cleaning the inner wall of the reaction vessel. The cleaning device achieves the effect of cleaning the inner wall of the reaction vessel, avoiding the situation where the ammonium salt filtrate crystals and sticks to the inner wall of the reaction vessel, thus preventing the ammonium salt filtrate from fully contacting the coolant.

[0009] Preferably, a scraper is fixedly connected to one side of the cleaning plate, and the scraper has a triangular cross-section, wherein the tip of the scraper is inclined in the direction of rotation of the stirring shaft.

[0010] The effect achieved by the above-mentioned components is that the scraper can easily scrape off the ammonium salt filtrate crystals on the inner wall of the reaction vessel, making it easier for staff to clean the ammonium salt filtrate crystals.

[0011] Preferably, a diagonal rod is fixedly connected to one side of the fixed plate, and one end of the diagonal rod is fixedly connected to the movable plate.

[0012] The effect achieved by the above components is that by setting up the diagonal bar, the fixed plate, and the movable plate to form a stable triangular structure, the stability between the movable plate and the fixed plate is improved.

[0013] Preferably, the surface of the movable plate is provided with two limiting rods, one end of which is fixedly connected to the cleaning plate.

[0014] The effect achieved by the above components is that the movement direction of the cleaning plate is restricted by the setting of the limit rod, thereby preventing the first spring on the cleaning plate from bending.

[0015] Preferably, the auxiliary device includes two symmetrical grooves on both sides of the fixing plate. The fixing plate is fixedly connected to a second spring via the grooves. One end of the second spring is fixedly connected to an insert plate. One side of the insert plate has a ramp. The mounting plate has an insertion hole via the fixing plate. The size of the insert plate matches the size of the insertion hole.

[0016] The aforementioned components achieve the following effects: When the fixing plate is inserted into the fixing groove of the mounting plate, the inner wall of the fixing groove presses against the slope of the insert plate, causing the insert plate to enter the interior of the groove. The second spring deforms, and after the fixing plate is fully inserted into the fixing groove of the mounting plate, the insert plate enters the insertion hole of the mounting plate under the action of the spring's return force, thus achieving the effect of fixing the fixing plate. When it is necessary to disassemble the cleaning plate, the operator presses the insert plate in the insertion hole, and the insert plate moves out of the insertion hole. Then, the fixing plate is pulled out, thereby completing the disassembly of the cleaning plate. The auxiliary device achieves the effect of installing and disassembling the cleaning plate, making it convenient for operators to disassemble the cleaning plate when it is not in use.

[0017] Preferably, two symmetrical telescopic rods are fixedly connected to one side of the insert plate, wherein one end of the telescopic rod is fixedly connected to the inner wall of the groove.

[0018] The effect achieved by the above components is that by setting the telescopic rod, the movement direction of the insert plate is restricted, thus preventing the insert plate from rotating.

[0019] Preferably, a sliding plate is fixedly connected to both sides of the fixing plate, and a sliding groove is provided on the mounting plate corresponding to the sliding plate, wherein the sliding plate and the sliding groove are slidably adapted.

[0020] The effect achieved by the above components is that by inserting the sliding plate of the fixing plate into the groove of the mounting plate, the fixing plate is limited, thus preventing misalignment between the insertion plate and the insertion hole of the mounting plate.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] When cleaning the inner wall of the reaction vessel is required, the operator moves the fixing plate, which is inserted into the fixing groove of the mounting plate. Then, the cleaning plate is moved in the direction of the moving plate, and the first spring deforms. At this time, the operator places the cover plate inside the reaction vessel and releases the cleaning plate. Under the action of the first spring's return force, the cleaning plate is pressed tightly against the inner wall of the reaction vessel. When the motor drives the stirring shaft to rotate with the help of the reducer, the stirring shaft drives the moving plate and the cleaning plate to rotate. The cleaning plate achieves the effect of cleaning the inner wall of the reaction vessel. The cleaning device achieves the effect of cleaning the inner wall of the reaction vessel, preventing the ammonium salt filtrate from crystallizing and sticking to the inner wall of the reaction vessel, thus preventing the ammonium salt filtrate from fully contacting the coolant. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This utility model Figure 1 A sectional view;

[0025] Figure 3 This is a three-dimensional structural diagram of the cleaning device of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the auxiliary device of this utility model;

[0027] Figure 5 This is a cross-sectional view of the fixing plate of this utility model.

[0028] Legend: 1. Reaction vessel; 2. Cover plate; 3. Feed pipe; 4. Discharge pipe; 5. Cooling box; 6. Cooling pipe; 7. Stirring shaft; 8. Cleaning device; 81. Mounting plate; 82. Fixing plate; 83. Moving plate; 84. First spring; 85. Cleaning plate; 86. Scraper; 87. Limiting rod; 88. Diagonal rod; 9. Auxiliary device; 91. Groove; 92. Second spring; 93. Insert plate; 94. Insertion hole; 95. Telescopic rod; 96. Slide plate; 97. Slide groove. Detailed Implementation

[0029] Reference Figure 1-5As shown, this embodiment discloses a staged cooling crystallization apparatus for ammonium salt filtrate, including a reaction tank 1, which is supported by legs placed on the ground, and a discharge pipe 4 is installed at the bottom of the reaction tank 1; a cover plate 2, which is detachably installed on the top of the reaction tank 1 by means of a snap fastener, and a feed pipe 3 is fixedly connected to the surface of the cover plate 2; a cooling box 5, which is installed on the outside of the reaction tank 1, and a cooling pipe 6 is fixedly connected inside the arc surface of the reaction tank 1, and a water pump is fixedly connected inside the cooling box 5, wherein the output end of the water pump is connected to the cooling pipe 6; a stirring shaft 7, which is rotatably connected to the bottom of the cover plate 2, and can rotate inside the reaction tank 1; and a cleaning device 8, which has an auxiliary device 9 installed on the arc surface of the stirring shaft 7, wherein the cleaning device 8 can clean the inner wall of the reaction tank 1. Before crystallizing the ammonium salt filtrate, the workers first install the cleaning device 8 on the arc surface of the stirring shaft 7 using the auxiliary device 9. Then, the workers place the cover plate 2 on the top of the reaction tank 1 and secure it with clips. The ammonium salt filtrate is then fed into the reaction tank 1 through the feed pipe 3. The workers turn on the water pump in the cooling tank 5, which sends the coolant from the cooling tank 5 into the cooling pipe 6. The coolant in the cooling pipe 6 cools the ammonium salt filtrate in the reaction tank 1. At the same time, the workers turn on the motor on the stirring shaft 7. The motor drives the stirring shaft 7 to rotate through the reducer. The stirring shaft 7 stirs the ammonium salt filtrate inside the reaction tank 1. Meanwhile, the cleaning device 8 on the stirring shaft 7 cleans the inner wall of the reaction tank 1 to prevent the transfer of heat energy between the coolant in the cooling pipe 6 and the ammonium salt filtrate.

[0030] Reference Figure 1-5As shown, the cleaning device 8 includes two mounting plates 81, which are fixedly connected to the arc surface of the stirring shaft 7. A fixing groove is provided on one side of the mounting plate 81, and a fixing plate 82 is provided on the mounting plate 81 through the fixing groove. The fixing plate 82 is detachably installed in the fixing groove of the mounting plate 81 with the help of an auxiliary device 9. One end of the two fixing plates 82 is fixedly connected to the same moving plate 83. Two first springs 84 are fixedly connected to one side of the moving plate 83, and a cleaning plate 85 is fixedly connected to one end of the first spring 84. When it is necessary to clean the inner wall of the reaction vessel 1, the operator moves the fixing plate 82, which is inserted into the fixing groove of the mounting plate 81. Then, the cleaning plate 85 is moved towards the moving plate 83, and the first spring 84 deforms. At this time, the operator covers the inside of the reaction vessel 1 with the cover plate 2 and releases the cleaning plate 85. Under the action of the return force of the first spring 84, the cleaning plate 85 is in close contact with the inner wall of the reaction vessel 1. When the motor drives the stirring shaft 7 to rotate with the help of the reducer, the stirring shaft 7 drives the moving plate 83 and the cleaning plate 85 to rotate. The cleaning plate 85 achieves the effect of cleaning the inner wall of the reaction vessel 1. The cleaning device 8 achieves the effect of cleaning the inner wall of the reaction vessel 1, avoiding the crystallization of ammonium salt filtrate sticking to the inner wall of the reaction vessel 1, which would prevent the ammonium salt filtrate from fully contacting the coolant.

[0031] Reference Figure 1-5 As shown, a scraper 86 is fixedly connected to one side of the cleaning plate 85. The scraper 86 has a triangular cross-section, with its tip inclined towards the rotation direction of the stirring shaft 7. The scraper 86 facilitates the removal of ammonium salt filtrate crystals from the inner wall of the reaction vessel 1, making it easier for workers to clean the crystals. A diagonal rod 88 is fixedly connected to one side of the fixed plate 82, with one end of the diagonal rod 88 fixedly connected to the moving plate 83. The diagonal rod 88, fixed plate 82, and moving plate 83 form a stable triangular structure, thereby improving the stability between the moving plate 83 and the fixed plate 82. Two limiting rods 87 are slidably inserted into the surface of the moving plate 83, with one end of each limiting rod 87 fixedly connected to the cleaning plate 85. The limiting rods 87 restrict the movement direction of the cleaning plate 85, preventing the first spring 84 on the cleaning plate 85 from bending.

[0032] Reference Figure 1-5As shown, the auxiliary device 9 includes two symmetrical grooves 91. The two grooves 91 are opened on both sides of the fixing plate 82. The fixing plate 82 is fixedly connected to the second spring 92 by means of the grooves 91. One end of the second spring 92 is fixedly connected to the insertion plate 93. A slope is opened on one side of the insertion plate 93. The mounting plate 81 is provided with an insertion hole 94 by means of the fixing plate 82. The size of the insertion plate 93 is adapted to the size of the insertion hole 94. When the fixing plate 82 is inserted into the fixing groove of the mounting plate 81, the inner wall of the fixing groove presses against the slope of the insert plate 93, and the insert plate 93 enters the interior of the groove 91. The second spring 92 deforms. After the fixing plate 82 is fully inserted into the fixing groove of the mounting plate 81, under the action of the spring's return force, the insert plate 93 enters the insertion hole 94 of the mounting plate 81, thus achieving the effect of fixing the fixing plate 82. When it is necessary to disassemble the cleaning plate 85, the operator presses the insert plate 93 in the insertion hole 94, and the insert plate 93 moves out of the insertion hole 94. Then, the fixing plate 82 is pulled out, thereby completing the disassembly of the cleaning plate 85. The auxiliary device 9 achieves the effect of installing and disassembling the cleaning plate 85, making it convenient for the operator to disassemble the cleaning plate 85 when it is not in use.

[0033] Reference Figure 1-5 As shown, two symmetrical telescopic rods 95 are fixedly connected to one side of the insertion plate 93, with one end of each rod fixedly connected to the inner wall of the groove 91. The telescopic rods 95 restrict the movement direction of the insertion plate 93, preventing rotation. Slide plates 96 are fixedly connected to both sides of the fixing plate 82, and the mounting plate 81 has grooves 97 corresponding to the slide plates 96, allowing the slide plates 96 and grooves 97 to slide together. Inserting the slide plates 96 of the fixing plate 82 into the grooves 97 of the mounting plate 81 limits the position of the fixing plate 82, preventing misalignment between the insertion plate 93 and the insertion hole 94 of the mounting plate 81.

[0034] Working principle: Before crystallizing the ammonium salt filtrate, the operator first moves the fixing plate 82. When the fixing plate 82 is inserted into the fixing groove of the mounting plate 81, the sliding plate 96 of the fixing plate 82 is inserted into the sliding groove 97 of the mounting plate 81, achieving the effect of limiting the fixing plate 82. The inner wall of the fixing groove presses the slope of the insert plate 93, and the insert plate 93 enters the interior of the groove 91. The second spring 92 deforms. After the fixing plate 82 is fully inserted into the fixing groove of the mounting plate 81, under the action of the spring return force, the insert plate 93 enters the insertion hole 94 of the mounting plate 81, achieving the effect of fixing the fixing plate 82. When it is necessary to disassemble the cleaning plate 85, the operator presses the insert plate 93 in the insertion hole 94, and the insert plate 93 moves out of the insertion hole 94. Then, the fixing plate 82 is pulled out, thus completing the disassembly of the cleaning plate 85. The auxiliary device 9 achieves the effect of installing and disassembling the cleaning plate 85, making it convenient for the operator to disassemble the cleaning plate 85 when it is not in use.

[0035] After the cleaning plate 85 is installed, the operator moves it towards the moving plate 83, causing the first spring 84 to deform. At this point, the operator places the cover plate 2 over the reaction vessel 1 and secures it with clips. Simultaneously, the operator releases the cleaning plate 85. Under the restoring force of the first spring 84, the cleaning plate 85 adheres tightly to the inner wall of the reaction vessel 1. Then, the ammonium salt filtrate is fed into the reaction vessel 1 through the feed pipe 3. The operator turns on the water pump in the cooling tank 5, which pumps the coolant from the cooling tank 5 into the cooling pipe 6. The coolant in tank 6 cools the ammonium salt filtrate in reaction tank 1. At the same time, the operator turns on the motor on the stirring shaft 7. The motor drives the stirring shaft 7 to rotate through the reducer. The stirring shaft 7 stirs the ammonium salt filtrate inside the reaction tank 1. At the same time, the stirring shaft 7 drives the moving plate 83 and the cleaning plate 85 to rotate. The cleaning plate 85 achieves the effect of cleaning the inner wall of the reaction tank 1. The cleaning device 8 achieves the effect of cleaning the inner wall of the reaction tank 1, preventing the ammonium salt filtrate from crystallizing and sticking to the inner wall of the reaction tank 1, thus preventing the ammonium salt filtrate from not being able to fully contact the coolant.

Claims

1. A staged cooling crystallization apparatus for ammonium salt filtrate, characterized in that: The reaction vessel (1) is supported by legs placed on the ground. A discharge pipe (4) is installed at the bottom of the reaction vessel (1). Cover plate (2), which is detachably installed on the top of the reaction vessel (1) by means of a buckle, and a feed pipe (3) is fixedly connected to the surface of the cover plate (2). Cooling box (5), the cooling box (5) is installed on the outside of reaction tank (1), a cooling pipe (6) is fixedly connected inside the arc surface of reaction tank (1), and a water pump is fixedly connected inside the cooling box (5), wherein the output end of the water pump is connected to the cooling pipe (6); A stirring shaft (7) is rotatably connected to the bottom of the cover plate (2), wherein the stirring shaft (7) can rotate inside the reaction vessel (1); The cleaning device (8) is in contact with the auxiliary device (9) installed on the arc surface of the stirring shaft (7), wherein the cleaning device (8) can clean the inner wall of the reaction vessel (1).

2. The staged cooling crystallization apparatus for ammonium salt filtrate according to claim 1, characterized in that: The cleaning device (8) includes two mounting plates (81), which are fixedly connected to the arc surface of the stirring shaft (7). A fixing groove is provided on one side of the mounting plate (81), and a fixing plate (82) is provided on the mounting plate (81) through the fixing groove. The fixing plate (82) is detachably installed in the fixing groove of the mounting plate (81) with the help of an auxiliary device (9). One end of the two fixing plates (82) is fixedly connected to the same moving plate (83). Two first springs (84) are fixedly connected to one side of the moving plate (83), and a cleaning plate (85) is fixedly connected to one end of the first spring (84).

3. The staged cooling crystallization apparatus for ammonium salt filtrate according to claim 2, characterized in that: A scraper (86) is fixedly connected to one side of the cleaning plate (85). The cross-section of the scraper (86) is triangular, and the tip of the scraper (86) is inclined in the direction of rotation of the stirring shaft (7).

4. The staged cooling crystallization apparatus for ammonium salt filtrate according to claim 2, characterized in that: A diagonal rod (88) is fixedly connected to one side of the fixed plate (82), and one end of the diagonal rod (88) is fixedly connected to the movable plate (83).

5. The staged cooling crystallization apparatus for ammonium salt filtrate according to claim 2, characterized in that: The surface of the movable plate (83) is provided with two limiting rods (87), one end of which is fixedly connected to the cleaning plate (85).

6. The staged cooling crystallization apparatus for ammonium salt filtrate according to claim 2, characterized in that: The auxiliary device (9) includes two symmetrical grooves (91) on both sides of the fixing plate (82). The fixing plate (82) is fixedly connected to a second spring (92) via the grooves (91). One end of the second spring (92) is fixedly connected to a plug plate (93). A ramp is provided on one side of the plug plate (93). The mounting plate (81) is provided with a socket (94) via the fixing plate (82). The size of the plug plate (93) is adapted to the size of the socket (94).

7. The staged cooling crystallization apparatus for ammonium salt filtrate according to claim 6, characterized in that: Two symmetrical telescopic rods (95) are fixedly connected to one side of the insert plate (93), and one end of the telescopic rod (95) is fixedly connected to the inner wall of the groove (91).

8. The staged cooling crystallization apparatus for ammonium salt filtrate according to claim 6, characterized in that: The fixed plate (82) has a sliding plate (96) fixedly connected to both sides. The mounting plate (81) has a groove (97) corresponding to the sliding plate (96), wherein the sliding plate (96) and the groove (97) are slidably adapted to each other.

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