Efficient and energy-saving urea evaporator

Abstract

The utility model relates to the technical field of urea production, and discloses an efficient and energy-saving urea evaporator which comprises a filter cartridge, the lower end of an inner cavity of the filter cartridge is connected with a sealing plate in a sliding mode, multiple sets of filter elements are arranged on the upper surface of the sealing plate at equal angles, and a connecting rod is fixedly connected to the middle of the upper surface of the sealing plate. The upper end of the connecting rod is fixedly connected with a fixed disc; two sets of fixing blocks are integrally formed on the outer side of the fixing disc, a side groove is formed in one side of each fixing block, and a positioning block is slidably inserted into each side groove. Through the cooperation of the fixed disc, the fixed block, the positioning block, the second spring and the positioning hole, the positioning block is driven to extrude the second spring by shifting the stop block, and then the positioning block is accommodated in the side groove and is separated from the positioning hole, so that the sealing plate provided with the filter element and the fixed disc are pulled out of the filter cartridge, the filter element is convenient to disassemble, assemble and clean, and the maintenance and cleaning efficiency of the filter element is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of urea production, in particular to a high-efficiency and energy-saving urea evaporator. Background Art

[0002] Urea, also known as carbon amide, is an organic compound composed of carbon, nitrogen, oxygen and hydrogen. It is a white crystal. As a neutral fertilizer, urea is suitable for various soils and plants. It is easy to store, convenient to use, and has little destructive effect on the soil. It is currently a chemical nitrogen fertilizer with a large usage. Urea is highly favored due to its good performance.

[0003] Urea ground fertilizer and foam fertilizer are inevitably mixed in the recovery process. These impurities enter the evaporator and adhere to the inner wall, affecting the heat transfer efficiency. A filtering device is required to filter the urea before it enters the evaporator. However, most of the existing filtering devices are integrated. The filter cartridge in the filtering device will cause blockage after long-term use. It is inconvenient to clean and replace the blocked filter cartridge, which in turn affects the production efficiency of urea. Therefore, we need to propose an efficient and energy-saving urea evaporator. Utility Model Content

[0004] The utility model aims to provide an efficient and energy-saving urea evaporator, which can prevent most impurities from entering the interior of the evaporator, thereby improving the thermal conductivity of the evaporator, thereby improving the efficiency of urea production, reducing the number of times staff need to maintain the evaporator in the later stage, and is easy to disassemble and assemble, and convenient for repairing and cleaning the filter cartridge, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: an energy-efficient urea evaporator, comprising a filter cartridge, a sealing plate is slidably connected to the lower end of the inner cavity of the filter cartridge, a plurality of filter elements are arranged at equal angles on the upper surface of the sealing plate, a connecting rod is fixedly connected to the middle of the upper surface of the sealing plate, and a fixing plate is fixedly connected to the upper end of the connecting rod;

[0006] Two groups of fixing blocks are integrally formed on the outer side of the fixing plate, one side of the fixing block is provided with a side groove, a positioning block is slidably inserted in the side groove, the upper surface of the fixing block is provided with a slide groove, a baffle is slidably connected in the slide groove, one end of the lower surface of the baffle is welded to one end of the upper surface of the positioning block, one side of the positioning block is slidably inserted with a guide rod, the guide rod is fixedly connected to one side of the inner cavity of the side groove, a second spring is sleeved on the outer side of the guide rod, and guide grooves for sliding connection of the fixing block are symmetrically provided in the inner cavity of the filter cartridge, and a positioning hole for embedding the positioning block is provided at the bottom of the guide groove.

[0007] Preferably, a limiting ring is fixedly connected to the bottom of the inner cavity of the filter cartridge, and multiple groups of telescopic rods are arranged at equal angles on the upper surface of the limiting ring, and the outer sides of the multiple groups of telescopic rods are all sleeved with first springs, and the upper ends of the multiple groups of first springs are in contact with support rings.

[0008] Preferably, the lower surface of the sealing plate abuts against the upper surface of the support ring, the inner diameter of the support ring is the same as the inner diameter of the limiting ring, and the upper ends of the multiple groups of telescopic rods are fixedly connected to the lower surface of the support ring.

[0009] Preferably, a movable disk is slidably connected to the outer side of the connecting rod, the outer diameter of the movable disk is the same as the outer diameter of the fixed disk, the outer diameter of the fixed disk is smaller than the inner diameter of the filter cartridge, and the upper surface of the movable disk is provided with circular holes for sliding insertion of multiple groups of filter elements.

[0010] Preferably, the lower end of the filter cylinder is connected to a feed cone cylinder, the lower end of the feed cone cylinder is connected to a feed pipe, and a flange is welded to the upper end of the outer side of the filter cylinder.

[0011] Preferably, a sealing cover is provided at the upper end of the filter cartridge, and a plurality of groups of limiting grooves are provided along the edge of the upper surface of the sealing cover, and connecting bolts are inserted into the plurality of limiting grooves, and the plurality of groups of connecting bolts are threadedly connected to the flange, and the connecting bolts are hexagon socket bolts.

[0012] Preferably, a discharge pipe is connected to the middle of the upper surface of the cover, and two groups of hanging ears are symmetrically welded on the upper surface of the cover.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model mainly cooperates between a fixed disk, a fixed block, a positioning block, a second spring and a positioning hole, and drives the positioning block to squeeze the second spring by toggling the stop block, so that the positioning block is stored in the side groove and disengaged from the positioning hole, so that the sealing plate and the fixed disk equipped with the filter element are pulled out of the filter cartridge, which is convenient for disassembly and cleaning of the filter element and improves the maintenance and cleaning efficiency of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the filter cartridge of the utility model;

[0017] Figure 3 This is a schematic diagram of the filter element structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the sealing structure of the utility model;

[0019] Figure 5 for Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0020] In the figure: 1. filter cartridge; 2. feed cone; 3. feed pipe; 4. flange; 5. cover; 6. limit groove; 7. connecting bolt; 8. discharge pipe; 9. hanging ear; 10. guide groove; 11. positioning hole; 12. movable plate; 13. limit ring; 14. telescopic rod; 15. first spring; 16. support ring; 17. sealing plate; 18. connecting rod; 19. filter element; 20. fixed plate; 21. fixed block; 22. side groove; 23. slide groove; 24. positioning block; 25. baffle; 26. guide rod; 27. second spring. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-5 The utility model provides a technical solution: an energy-efficient urea evaporator, comprising a filter cartridge 1, a sealing plate 17 is slidably connected to the lower end of the inner cavity of the filter cartridge 1, a plurality of filter elements 19 are arranged at equal angles on the upper surface of the sealing plate 17, a connecting rod 18 is fixedly connected to the middle of the upper surface of the sealing plate 17, and a fixing plate 20 is fixedly connected to the upper end of the connecting rod 18;

[0023] Two groups of fixing blocks 21 are integrally formed on the outer side of the fixing disk 20, a side groove 22 is provided on one side of the fixing block 21, a positioning block 24 is slidably inserted in the side groove 22, a slide groove 23 is provided on the upper surface of the fixing block 21, a baffle 25 is slidably connected in the slide groove 23, one end of the lower surface of the baffle 25 is welded to one end of the upper surface of the positioning block 24, a guide rod 26 is slidably inserted on one side of the positioning block 24, the guide rod 26 is fixedly connected to one side of the inner cavity of the side groove 22, a second spring 27 is sleeved on the outer side of the guide rod 26, and a guide groove 10 for sliding connection of the fixing block 21 is symmetrically provided in the inner cavity of the filter cartridge 1, and a positioning hole 11 for embedding the positioning block 24 is provided at the bottom of the guide groove 10.

[0024] A limiting ring 13 is fixedly connected to the bottom of the inner cavity of the filter cartridge 1, and a plurality of telescopic rods 14 are arranged at equal angles on the upper surface of the limiting ring 13, and a first spring 15 is sleeved on the outer side of the plurality of telescopic rods 14, and the upper ends of the plurality of first springs 15 are in contact with a supporting ring 16, and the position of the sealing plate 17 is limited by the limiting ring 13, and the sealing plate 17 is supported by the supporting ring 16, and the sealing plate 17 is buffered by the first spring 15, so that the positioning block 24 is embedded in the positioning hole 11, thereby improving the installation efficiency.

[0025] The lower surface of the sealing plate 17 abuts against the upper surface of the support ring 16. The inner diameter of the support ring 16 is the same as the inner diameter of the limit ring 13. The upper ends of the multiple groups of telescopic rods 14 are fixedly connected to the lower surface of the support ring 16. The limit ring 13 and the support ring 16 facilitate the passage of urea. The telescopic rod 14 stabilizes the first spring 15 to prevent the first spring 15 from bending.

[0026] A movable disk 12 is slidably connected to the outer side of the connecting rod 18. The outer diameter of the movable disk 12 is the same as the outer diameter of the fixed disk 20. The outer diameter of the fixed disk 20 is smaller than the inner diameter of the filter cartridge 1. Circular holes for sliding and inserting multiple groups of filter elements 19 are provided on the upper surface of the movable disk 12. The movable disk 12 facilitates scraping off impurities on the outer wall of the disassembled filter element 19, thereby improving the cleaning efficiency of the filter element 19.

[0027] The lower end of the filter cylinder 1 is connected to a feed cone 2, and the lower end of the feed cone 2 is connected to a feed pipe 3. A flange 4 is welded to the upper end of the outer side of the filter cylinder 1, and urea is easily introduced through the feed pipe 3. The two ends of the feed pipe 3 are respectively used for introducing urea and discharging clean sewage.

[0028] A sealing cover 5 is provided at the upper end of the filter cartridge 1. A plurality of groups of limiting grooves 6 are provided along the edge of the upper surface of the sealing cover 5. Connecting bolts 7 are inserted into the plurality of limiting grooves 6. The plurality of connecting bolts 7 are threadedly connected to the flange 4. The connecting bolts 7 are hexagon socket bolts. The limiting grooves 6 are used to limit the connecting bolts 7, thereby ensuring the installation efficiency when the sealing cover 5 is docked with the flange 4, avoiding the rotation of the connecting bolts 7, and reducing the labor intensity of the staff in disassembling and assembling the sealing cover 5.

[0029] A discharge pipe 8 is connected to the middle of the upper surface of the cover 5, and two groups of hanging ears 9 are symmetrically welded on the upper surface of the cover 5. The filtered urea is conveniently introduced into the evaporator through the discharge pipe 8, and clean water is introduced through the other end of the discharge pipe 8 to facilitate reverse flushing of the filter element 19 in the filter cartridge 1, and then discharged through one end of the feed pipe 3, thereby reducing the number of disassembly and cleaning times.

[0030] When in use, the valve at one end of the discharge pipe 8 connected to the evaporator is closed, and clean water is passed into the other end of the discharge pipe 8, and then the clean water enters the filter cartridge 1, flows through the filter element 19 to reversely permeate the impurities, and then is discharged through one end of the feed pipe 3, and the filter element 19 does not need to be disassembled and cleaned. After removing the connecting bolts 7, the cover 5 is removed, and the staff member simultaneously moves the block with both hands, so that the positioning block 24 squeezes the second spring 27, and the positioning block 24 disengages from the positioning hole 11. At the same time, under the elastic action of the first spring 15, the sealing plate 17 is lifted up, thereby reducing the labor intensity of the staff to pull out the filter element 19, so that the filter element 19 on the sealing plate 17 can be taken out for maintenance and cleaning, thereby improving the cleaning effect of the filter element 19. After cleaning, the fixing block 21 can be inserted into the filter cartridge 1 along the guide groove 10, and the fixing plate 20 is pressed to make the sealing plate 17 press the support ring 16, so that the positioning block 24 is pressed into the positioning hole 11 under the elastic action of the second spring 27, and the operation is simple.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency and energy-saving urea evaporator, comprising a filter cartridge (1), characterized in that: A sealing plate (17) is slidably connected to the lower end of the inner cavity of the filter cartridge (1), a plurality of groups of filter elements (19) are arranged at equal angles on the upper surface of the sealing plate (17), a connecting rod (18) is fixedly connected to the middle of the upper surface of the sealing plate (17), and a fixing plate (20) is fixedly connected to the upper end of the connecting rod (18); Two groups of fixing blocks (21) are integrally formed on the outer side of the fixing disk (20); a side groove (22) is provided on one side of the fixing block (21); a positioning block (24) is slidably inserted in the side groove (22); a sliding groove (23) is provided on the upper surface of the fixing block (21); a baffle (25) is slidably connected in the sliding groove (23); one end of the lower surface of the baffle (25) is welded to one end of the upper surface of the positioning block (24); a guide rod (26) is slidably inserted on one side of the positioning block (24); the guide rod (26) is fixedly connected to one side of the inner cavity of the side groove (22); a second spring (27) is sleeved on the outer side of the guide rod (26); a guide groove (10) for sliding connection of the fixing block (21) is symmetrically provided in the inner cavity of the filter cartridge (1); a positioning hole (11) for embedding the positioning block (24) is provided at the bottom of the guide groove (10).

2. The high-efficiency and energy-saving urea evaporator according to claim 1, characterized in that: A limit ring (13) is fixedly connected to the bottom of the inner cavity of the filter cartridge (1), and a plurality of groups of telescopic rods (14) are arranged at equal angles on the upper surface of the limit ring (13), and a first spring (15) is sleeved on the outer sides of the plurality of groups of telescopic rods (14), and the upper ends of the plurality of groups of the first springs (15) are in contact with a support ring (16).

3. The high-efficiency and energy-saving urea evaporator according to claim 2, characterized in that: The lower surface of the sealing plate (17) contacts the upper surface of the support ring (16); the inner diameter of the support ring (16) is the same as the inner diameter of the limiting ring (13); and the upper ends of the plurality of telescopic rods (14) are fixedly connected to the lower surface of the support ring (16).

4. The high-efficiency and energy-saving urea evaporator according to claim 1, characterized in that: A movable disk (12) is slidably connected to the outer side of the connecting rod (18); the outer diameter of the movable disk (12) is the same as the outer diameter of the fixed disk (20); the outer diameter of the fixed disk (20) is smaller than the inner diameter of the filter cartridge (1); and a circular hole for slidingly inserting a plurality of filter elements (19) is provided on the upper surface of the movable disk (12).

5. The high-efficiency and energy-saving urea evaporator according to claim 1, characterized in that: The lower end of the filter cylinder (1) is connected to a feed cone cylinder (2), the lower end of the feed cone cylinder (2) is connected to a feed pipe (3), and a flange (4) is welded to the upper end of the outer side of the filter cylinder (1).

6. The high-efficiency and energy-saving urea evaporator according to claim 5, characterized in that: A sealing cover (5) is provided at the upper end of the filter cartridge (1), and a plurality of groups of limiting grooves (6) are provided along the edge of the upper surface of the sealing cover (5), and connecting bolts (7) are inserted into the plurality of limiting grooves (6), and the plurality of groups of connecting bolts (7) are threadedly connected to the flange (4), and the connecting bolts (7) are hexagon socket bolts.

7. The high-efficiency and energy-saving urea evaporator according to claim 6, characterized in that: The middle part of the upper surface of the sealing cover (5) is connected to a discharge pipe (8), and two groups of hanging ears (9) are symmetrically welded to the upper surface of the sealing cover (5).

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