Urea dissolving and storing device

Abstract

The invention relates to the technical field of denitration urea production equipment, in particular to a urea dissolution and storage device which comprises a base, a dissolution tank, a discharging pipe, a water pump, a first feeding pipe, an impurity removal tank, a second feeding pipe and a storage tank, the dissolution tank is mounted on the base, one end of the discharging pipe is communicated with the bottom of the dissolution tank, and the input end of the water pump is communicated with the other end of the discharging pipe; one end of the first feeding pipe is connected with the output end of the water pump, one side of the impurity removal tank is connected with the other end of the first feeding pipe, a detachable filtering device is installed on the impurity removal tank, one end of the second feeding pipe is communicated with the other side of the impurity removal tank, and the storage tank is communicated with the other end of the second feeding pipe. According to the urea dissolving and storing device, the filter plate can be freely and fixedly mounted and dismounted, and the filter plate can be conveniently replaced after being used for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of denitrification urea production equipment, and particularly to a urea dissolution and storage device. Background Art

[0002] Denitrification urea is mainly used in the flue gas denitrification process in industrial fields such as coal-fired power plants to remove nitrogen oxides in the flue gas.

[0003] The existing denitrification urea dissolution and storage device includes a base, a dissolution tank and a storage tank installed on the base. The top of the dissolution tank is fixedly installed with a top cover, the top of the top cover is fixedly installed with a motor, the output end of the motor is fixedly installed with a stirring rod, the outer side wall of the dissolution tank is spirally surrounded by a steam heating pipe, a steam generator is fixedly installed on the upper surface of the base on one side of the dissolution tank, both ends of the steam heating pipe are connected to the steam generator, the bottom of the dissolution tank is connected with a discharge pipe, one end of the discharge pipe is connected with a water pump, and a feeding pipe is connected between the outlet end of the water pump and the top of the storage tank. An impurity removal cylinder is installed in the middle of the feeding pipe. When using this denitrification urea dissolution and storage device, demineralized water is added into the dissolution tank through a water inlet pipe, urea particles are added into the dissolution tank through a feeding hopper, the motor is started to drive the stirring rod to rotate, so that the stirring rod stirs the solution to improve the dissolution efficiency. At the same time, the steam generator is started to introduce steam into the steam heating pipe, so that the steam heating pipe heats the dissolution tank to further improve the dissolution efficiency. The solution in the dissolution tank is transported into the storage tank through the water pump for storage. When the solution passes through the impurity removal cylinder, the quartz sand filter screen and activated carbon plate in the impurity removal cylinder can filter and adsorb the impurities in the solution to improve the finished product quality of the solution.

[0004] Regarding the above and existing related technologies, the inventor believes that there are often the following defects: The traditional impurity removal tank design often uses fastening bolts or welding and other methods to fix the filter plate inside the impurity removal tank. This fixing method is not only cumbersome to operate and requires professional tools for assistance, but also cannot be disassembled to replace the filter plate, bringing great inconvenience to maintenance personnel.

[0005] Therefore, how to provide a urea dissolution and storage device with a filter plate that can be freely disassembled and fixed has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0006] The present invention provides a urea dissolution and storage device to solve the problem of how to provide a urea dissolution and storage device with a filter plate that can be freely disassembled and fixed.

[0007] The present invention provides a urea dissolution and storage device, including: A base; A dissolution tank, installed on the base; The discharge pipe, one end of which is communicated with the bottom of the dissolution tank; The water pump, the input end of which is communicated with the other end of the discharge pipe; The first feed pipe, one end of which is connected to the output end of the water pump; The impurity removal tank, one side of which is connected to the other end of the first feed pipe, and a detachable filtering device is installed on the impurity removal tank; The second feed pipe, one end of which is communicated with the other side of the impurity removal tank; The storage tank, which is communicated with the other end of the second feed pipe.

[0008] In some embodiments, the detachable filtering device includes: The filter plate, a notch is formed on the impurity removal tank, the filter plate is installed inside the notch and is slidably connected to the impurity removal tank; The connecting block, which is installed at the end of the filter plate away from the impurity removal tank, and the size of the connecting block is adapted to the size of the notch.

[0009] In some embodiments, a locking structure is fixedly connected to the impurity removal tank, and the locking structure includes: The first hollow block, which is fixedly connected to the impurity removal tank, an activity groove is formed at the bottom of the connecting block, a clamping groove is formed on the inner wall of the connecting block inside the activity groove, and adjusting grooves are formed on both sides of the first hollow block; The elastic locking mechanism, which is slidably connected inside the first hollow block, one side of the elastic locking mechanism extends out of the first hollow block through the adjusting groove and is clamped with the clamping groove inside the activity groove.

[0010] In some embodiments, the elastic locking mechanism includes: The second hollow block, which is slidably connected inside the first hollow block, and an insertion groove is formed on the second hollow block; The adjusting block, which is slidably connected inside the insertion groove; The movable plate, which is connected to one side of the adjusting block inside the second hollow block; The clamping block, which is installed at the end of the movable plate, is located above the second hollow block and is clamped inside the clamping groove.

[0011] In some embodiments, two groups of clamping blocks are provided, and limiting holes are formed on both clamping blocks, a limiting rod is slidably connected in the two limiting holes, and both ends of the limiting rod pass through the two clamping blocks and extend to the side close to the second hollow block.

[0012] In some embodiments, a return spring is sleeved on the limiting rod extending to the side close to the second hollow block, one end of the return spring is connected to the inner wall of the second hollow block, and the other end is connected to the movable plate.

[0013] In some embodiments, the outer diameter of the clamping block is adapted to the inner diameter of the clamping groove.

[0014] In some of these embodiments, limiting grooves are provided on the inner wall of the impurity removal tank inside the notch, limiting blocks are installed on the side of the filter plate, and the filter plate is slidably connected to the impurity removal tank through the cooperation of the limiting grooves and the limiting blocks.

[0015] In some of these embodiments, a sealing gasket is fixedly connected to the side of the connecting block close to the impurity removal tank.

[0016] In some of these embodiments, the size of the second hollow block is adapted to the size of the movable slot.

[0017] The beneficial effects of the present invention are as follows: When installing the filter plate of the urea dissolution and storage device of the present invention, the operator only needs to hold the connecting block by hand and push the filter plate into the notch. The cooperation of the limiting groove and the limiting block can ensure that the filter plate is placed horizontally without affecting the filtering effect. After the filter plate is installed in place, the operator presses the adjusting block inward and pushes the second hollow block upward through the adjusting block. The second hollow block slides upward along the inner wall of the first hollow block until the locking block moves outside the card slot. At this time, the operator releases the adjusting block in the pressed state, and the adjusting block and the locking block move outward under the action of the return spring, so that the locking block is inserted into the card slot to complete the fixation of the filter plate. When the filter plate needs to be replaced, the operator presses the adjusting block to disengage the locking block from the card slot, and slides the adjusting block downward along the adjusting slot to completely disengage the movable plate from the movable slot. At this time, the adjusting block is released, and the adjusting block and the locking block are reset under the action of the return spring, and the filter plate is unlocked. The operator only needs to pull the connecting block to draw out the filter plate, so that the urea dissolution and storage device of the present invention can freely fix, install and disassemble the filter plate, which is convenient for replacement after the filter plate is used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a urea dissolution and storage device of the present invention from one perspective; Figure 2 is Figure 1 an exploded view of the impurity removal tank in the urea dissolution and storage device shown; Figure 3 is Figure 1 a schematic structural diagram of the card slot in the urea dissolution and storage device shown; Figure 4 is Figure 1 an exploded view of the locking structure in the urea dissolution and storage device shown; In the attached drawings, 1. base; 2. dissolving tank; 3. discharge pipe; 4. water pump; 5. first feed pipe; 6. impurity removal tank; 7. second feed pipe; 8. storage tank; 9. notch; 10. filter plate; 11. connecting block; 12. first hollow block; 13. movable groove; 14. clamping slot; 15. adjustment slot; 16. second hollow block; 17. insertion slot; 18. adjustment block; 19. movable plate; 20. clamping block; 21. limit hole; 22. limit rod; 23. return spring; 24. limit groove; 25. limit block; 26. sealing gasket. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] As described in the background technology, the traditional impurity removal tank design often uses fastening bolts or welding to fix the filter plate inside the impurity removal tank. This fixing method is not only cumbersome to operate and requires professional tools to assist, but also cannot be disassembled to replace the filter plate, which brings great inconvenience to maintenance personnel. Therefore, how to provide a urea dissolving and storage device with a filter plate that can be freely disassembled and fixed has become a technical problem that needs to be solved urgently by technicians in this field.

[0021] As is known to all, urea is an important chemical that is widely used in agriculture, chemical industry and other fields. The dissolution and storage of urea are introduced in detail below: 1. Dissolution of urea Solubility Water solubility: Urea has good solubility in water and can form a stable transparent solution. Generally, the maximum solubility of urea in water is 1087g / L. At this concentration, the density of urea aqueous solution is 1.335g / cm³. Since urea aqueous solution has a certain alkalinity, it can be used to adjust the pH value of the soil and increase the fertility of the soil.

[0022] Ethanol solubility: Urea is also soluble in ethanol to a certain extent, but some reactions may occur. Because ethanol contains a certain amount of water, the presence of water may cause urea to decompose and produce ammonia and produce odor.

[0023] Carbon dioxide solubility: Urea can also dissolve in carbon dioxide to form a urea-carbon dioxide complex. This complex has certain application value in biology, medicine and other fields.

[0024] Dissolution process The dissolution process of urea is an endothermic reaction with a relatively high heat of dissolution. Therefore, when preparing a urea solution, a powerful heat source needs to be configured to prevent recrystallization after urea dissolution.

[0025] Industrially, urea in bags is commonly used to self-prepare urea solution. Through a series of equipment such as bag breakers, bucket elevators, storage bins, screw scales, screw conveyors, etc., urea granules are transported into the dissolution tank, mixed and stirred with demineralized water, and finally a urea solution with a certain concentration is prepared.

[0026] Influencing factors Temperature: The solubility of urea increases with the increase in temperature. However, too high a temperature will also cause urea to decompose, thus affecting its dissolution performance.

[0027] pH value: Under neutral or weakly acidic conditions, the solubility of urea is relatively high. Under alkaline conditions, urea is easily hydrolyzed, resulting in a decrease in its solubility.

[0028] Purity: The purity of urea also affects its solubility. The higher the purity, the generally greater the solubility.

[0029] Ionic strength: The ionic strength in the solution also affects the solubility of urea. The greater the ionic strength, the more likely the solubility of urea will decrease.

[0030] To solve the above problems, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 ,the present invention provides a urea dissolution and storage device, including a base 1, a dissolution tank 2, a discharge pipe 3, a water pump 4, a first feed pipe 5, an impurity removal tank 6, a second feed pipe 7 and a storage tank 8. The dissolution tank 2 is installed on the base 1. One end of the discharge pipe 3 is communicated with the bottom of the dissolution tank 2. The input end of the water pump 4 is communicated with the other end of the discharge pipe 3. One end of the first feed pipe 5 is connected to the output end of the water pump 4. One side of the impurity removal tank 6 is connected to the other end of the first feed pipe 5, and a detachable filtering device is installed on the impurity removal tank 6. One end of the second feed pipe 7 is communicated with the other side of the impurity removal tank 6, and the storage tank 8 is communicated with the other end of the second feed pipe 7.

[0031] Preferably, the detachable filtering device includes a filter plate 10 and a connecting block 11. A notch 9 is provided on the impurity removal tank 6. The filter plate 10 is installed inside the notch 9 and is slidably connected to the impurity removal tank 6. The connecting block 11 is installed at the end of the filter plate 10 away from the impurity removal tank 6, and the size of the connecting block 11 is adapted to the size of the notch 9.

[0032] Specifically, the size of the connecting block 11 is adapted to the size of the notch 9, which avoids liquid leakage during actual application after the filter plate 10 is installed. At the same time, the width of the filter plate 10 should be slightly smaller than the width of the notch 9 to avoid jamming of the filter plate during installation or disassembly.

[0033] Preferably, a locking structure is fixedly connected to the impurity removal tank 6. The locking structure includes: a first hollow block 12 and an elastic locking mechanism. The first hollow block 12 is fixedly connected to the impurity removal tank 6. An activity groove 13 is formed at the bottom of the connecting block 11, and a clamping groove 14 is formed on the inner wall of the connecting block 11 inside the activity groove 13. Adjusting grooves 15 are formed on both sides of the first hollow block 12. The elastic locking mechanism is slidably connected inside the first hollow block 12. One side of the elastic locking mechanism extends out of the first hollow block 12 through the adjusting groove 15 and is clamped with the clamping groove 14 inside the activity groove 13.

[0034] Specifically, the top of the first hollow block 12 should be located directly below the outside of the activity groove 13 to prevent the first hollow block 12 from extending into the activity groove 13. Two sets of symmetric clamping grooves 14 and adjusting grooves 15 are provided. Both ends of the elastic locking mechanism extend out of the first hollow block 12 and are respectively inserted into the two sets of clamping grooves 14, thereby improving stability. When disassembling and cleaning the filter plate 10 of the device of the present invention, it is more convenient and there is no need to use tools for disassembly, improving the practicability of the device.

[0035] Preferably, the elastic locking mechanism includes: a second hollow block 16, an adjusting block 18, an activity plate 19, and a clamping block 20. The second hollow block 16 is slidably connected inside the first hollow block 12. An insertion groove 17 is formed on the second hollow block 16. The adjusting block 18 is slidably connected inside the insertion groove 17. The activity plate 19 is connected to one side of the adjusting block 18 inside the second hollow block 16. The clamping block 20 is installed at the end of the activity plate 19, above the second hollow block 16, and is clamped inside the clamping groove 14.

[0036] Specifically, two sets of adjusting blocks 18, activity plates 19, and clamping blocks 20 are provided, and they are symmetrically arranged on both sides of the second hollow block 16. When the operator uses it, it is necessary to press two adjusting blocks 18 simultaneously and make the two adjusting blocks 18 slide along two different adjusting grooves 15 respectively, so that the second hollow block 16 is evenly stressed and can slide smoothly on the inner wall of the first hollow block 12 without getting stuck.

[0037] Preferably, two sets of clamping blocks 20 are provided, and limiting holes 21 are formed on both clamping blocks 20. A limiting rod 22 is slidably connected in the two limiting holes 21, and both ends of the limiting rod 22 pass through the two clamping blocks 20 and extend to the side close to the second hollow block 16.

[0038] Specifically, the limiting rod 22 is used to connect the two activity plates 19 so that they can move synchronously. The cooperation between the limiting rod 22 and the limiting holes 21 can limit the movement of the activity plate 19 within a certain range and prevent it from moving excessively or deviating from the predetermined position. This limiting mechanism enhances the stability of the entire structure.

[0039] Preferably, a return spring 23 is sleeved on the limiting rod 22 extending to the side close to the second hollow block 16. One end of the return spring 23 is connected to the inner wall of the second hollow block 16, and the other end is connected to the movable plate 19.

[0040] Specifically, when the movable plate 19 is not affected by external force and moves, the return spring 23 can generate a reverse acting force to return the movable plate 19 to its initial position. This automatic reset function reduces the need for manual intervention and improves the convenience of operation.

[0041] Preferably, the outer diameter of the clamping block 20 is adapted to the inner diameter of the clamping groove 14.

[0042] Specifically, this tight fit ensures the stability of the connection, enabling the clamping block 20 and the clamping groove 14 to bear the force together when stressed and not easily separated.

[0043] Preferably, a limiting groove 24 is formed on the inner wall of the impurity removal tank 6 inside the notch 9, and a limiting block 25 is installed on the side of the filter plate 10. The filter plate 10 is slidably connected to the impurity removal tank 6 through the cooperation of the limiting groove 24 and the limiting block 25.

[0044] Specifically, this design makes the movement of the filter plate 10 in the notch 9 more stable, not easily offset or shaken, thus ensuring the stability of the filtering effect.

[0045] Preferably, a sealing gasket 26 is fixedly connected to the side of the connecting block 11 close to the impurity removal tank 6.

[0046] Specifically, the setting of the sealing gasket 26 increases the sealing performance between the connecting block 11 and adjacent components, effectively preventing the leakage of urea solution and ensuring the reliability and safety of the device.

[0047] Preferably, the size of the second hollow block 16 is adapted to the size of the movable groove 13.

[0048] When installing the filter plate 10 of the present invention, the operator only needs to hold the connecting block 11 by hand and push the filter plate into the notch 9. The limiting groove 24 and the limiting block 25 cooperate with each other to ensure that the filter plate 10 is placed horizontally without affecting the filtering effect. After the filter plate 10 is installed in place, the operator presses the adjusting block 18 inward and pushes the second hollow block 16 upward through the adjusting block 18. The second hollow block 16 slides upward along the inner wall of the first hollow block 12 until the clamping block 20 moves outside the clamping groove 14. At this time, the operator releases the adjusting block 18 in the pressed state. The adjusting block 18 and the clamping block 20 move outward under the action of the return spring 23, so that the clamping block 20 is inserted into the clamping groove 14 to complete the fixation of the filter plate 10. When the filter plate needs to be replaced, the operator presses the adjusting block 18 to disengage the clamping block 20 from the clamping groove 14 and slides the adjusting block 18 downward along the adjusting groove 15 to completely disengage the movable plate 19 from the movable groove 13. At this time, the adjusting block 18 is released. The adjusting block 18 and the clamping block 20 are reset under the action of the return spring 23, and the filter plate 10 is unlocked. The operator only needs to pull the connecting block 11 to draw out the filter plate 10, so that the urea dissolving and storing device of the present invention can freely fix, install and disassemble the filter plate 10, which is convenient for replacement after the filter plate 10 is used for a long time.

[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] In the present invention, unless otherwise clearly specified or limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0053] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A urea dissolving and storing device, characterized in that: include: Base (1); A dissolving tank (2) mounted on the base (1); A discharge pipe (3), one end of which is connected to the bottom of the dissolving tank (2); A water pump (4), the input end of which is connected to the other end of the discharge pipe (3); A first feed pipe (5), one end of which is connected to the output end of the water pump (4); a de-impurity tank (6), one side of which is connected to the other end of the first feed pipe (5), and a detachable filtering device is installed on the de-impurity tank (6); A second feed pipe (7), one end of which is connected to the other side of the impurity removal tank (6); The storage tank (8) is connected to the other end of the second feeding pipe (7).

2. The urea dissolving and storing device according to claim 1, characterized in that: The detachable filtering device comprises: A filter plate (10), wherein a notch (9) is formed on the impurity removal tank (6), and the filter plate (10) is installed inside the notch (9) and is slidably connected to the impurity removal tank (6); A connecting block (11) is mounted on an end of the filter plate (10) away from the impurity removal tank (6), and the size of the connecting block (11) is adapted to the size of the notch (9).

3. The urea dissolving and storing device according to claim 2, characterized in that: The impurity removal tank (6) is fixedly connected with a locking structure, and the locking structure comprises: A first hollow block (12) is fixedly connected to the impurity removal tank (6), a movable groove (13) is provided at the bottom of the connecting block (11), a clamping groove (14) is provided on the inner wall of the connecting block (11) inside the movable groove (13), and adjustment grooves (15) are provided on both sides of the first hollow block (12); An elastic locking mechanism is slidably connected inside the first hollow block (12), one side of the elastic locking mechanism extends to the outside of the first hollow block (12) through the adjustment slot (15) and is engaged with a locking slot (14) inside the movable slot (13).

4. The urea dissolving and storing device according to claim 3, characterized in that: The elastic locking mechanism comprises: A second hollow block (16) is slidably connected to the inside of the first hollow block (12), and a through slot (17) is provided on the second hollow block (16); An adjusting block (18) slidably connected inside the through-slot (17); A movable plate (19) connected to one side of the adjustment block (18) located inside the second hollow block (16); A clamping block (20) is mounted on the end of the movable plate (19), is located above the second hollow block (16), and is clamped inside the clamping slot (14).

5. The urea dissolving and storing device according to claim 4, characterized in that: Two groups of the clamping blocks (20) are provided, and both clamping blocks (20) are provided with limiting holes (21), the two limiting holes (21) are slidably connected to limiting rods (22), and the two ends of the limiting rods (22) respectively pass through the two clamping blocks (20) and extend to a side close to the second hollow block (16).

6. The urea dissolving and storing device according to claim 5, characterized in that: A return spring (23) is sleeved on the limiting rod (22) extending to the side close to the second hollow block (16), one end of the return spring (23) is connected to the inner wall of the second hollow block (16), and the other end is connected to the movable plate (19).

7. The urea dissolving and storing device according to claim 5, characterized in that: The outer diameter of the clamping block (20) is matched to the inner diameter of the clamping slot (14).

8. The urea dissolving and storing device according to claim 2, characterized in that: A limiting groove (24) is provided on the inner wall of the impurity removal tank (6) inside the notch (9), and a limiting block (25) is installed on the side of the filter plate (10). The filter plate (10) is slidably connected to the impurity removal tank (6) through the cooperation of the limiting groove (24) and the limiting block (25).

9. The urea dissolving and storing device according to claim 2, characterized in that: A sealing gasket (26) is fixedly connected to a side of the connection block (11) close to the impurity removal tank (6).

10. The urea dissolving and storing device according to claim 4, characterized in that: The size of the second hollow block (16) is compatible with the size of the movable groove (13).

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