A discharge trough

Abstract

The present application provides a discharge tank, characterized in that it includes a semicircular discharge tank, a feed pipe, a closed feed assembly, a filter, a discharge pipe and a one-way valve unit; the closed feed assembly is arranged at one end of the feed pipe, the filter is arranged at the other end of the feed pipe, and the filter connects the feed pipe with the semicircular discharge tank; the one-way valve unit includes a first one-way valve arranged on the feed pipe and a second one-way valve arranged on the discharge pipe; the discharge pipe is connected to the bottom end of the semicircular discharge tank. The technical solution of the present application can effectively reduce the environmental risks in the urea production process.

Description

Technical Field

[0001] The present application relates to the technical field of urea production, and is a discharge tank. Background Art

[0002] The ammonium carbonate liquid discharge storage tank in the urea unit is a device specially designed to collect and store ammonium carbonate liquid and urine generated during the shutdown, flushing, replacement and other processes of the urea unit. Ammonium carbonate liquid usually contains ammonia, carbon dioxide and other harmful substances. When the process condensate treatment section is started or shut down, ammonia-containing analytical gas phase or harmful substances may be directly discharged, causing a certain degree of pollution to the soil, water and air. The establishment of a discharge tank can avoid this situation, so that various processes have more sufficient discharge space when handling emissions, further reducing the environmental risks when the urea unit is started or shut down.

[0003] Ensuring the tightness of the ammonium carbonate liquid discharge tank is crucial to maintaining the stability, safety and environmental protection of the production process. In order to ensure the tightness of the ammonium carbonate liquid discharge tank, it is necessary to propose a new discharge tank. Utility Model Content

[0004] The utility model aims to provide a discharge trough which can effectively reduce the environmental risks in the urea production process.

[0005] This application is implemented through the following technical solutions, specifically:

[0006] A discharge trough, characterized in that it includes a semicircular discharge storage tank, a feed pipe, a closed feed assembly, a filter, a discharge pipe and a one-way valve unit; the closed feed assembly is arranged at one end of the feed pipe, and the filter is arranged at the other end of the feed pipe, and the filter connects the feed pipe and the semicircular discharge storage tank; the one-way valve unit includes a first one-way valve arranged on the feed pipe and a second one-way valve arranged on the discharge pipe; the discharge pipe is connected to the bottom end of the semicircular discharge storage tank.

[0007] In order to improve the sealing performance of the closed feeding assembly to the pipe mouth of the feeding pipe, the closed feeding assembly further includes a first cover plate and a plurality of first fasteners arranged at the pipe mouth of the feeding pipe, the first fastener includes a first bolt and a first ear plate; a plurality of first buckles are also hingedly arranged on the first cover plate; the first bolt is used to pass through the first ear plate and abut the first buckle when in a tightened state, thereby closing the passage between the first cover plate and the feeding pipe; or releasing the first buckle when the first bolt is loosened, so that the first cover plate rotates relative to the feeding pipe, thereby opening the passage between the first cover plate and the feeding pipe.

[0008] Furthermore, the closed feeding assembly also includes: a first sealing gasket, which is arranged in a circular groove on the first cover plate.

[0009] In order to improve the sealing performance of the closed discharging assembly on the outlet of the discharging pipe, a closed discharging assembly is further provided at the other end of the discharging pipe, and the closed discharging assembly includes a second cover plate and a plurality of second fasteners arranged at the outlet of the discharging pipe, the second fasteners including a second bolt and a second ear plate; a plurality of second clips are also hingedly provided on the second cover plate; the second bolt is used to pass through the second ear plate and abut the second clip when tightened, so as to close the passage between the second cover plate and the discharging pipe; or release the second clip when the second bolt is loosened, so that the second cover plate rotates relative to the discharging pipe, so as to open the passage between the second cover plate and the discharging pipe.

[0010] Furthermore, the closed discharging assembly also includes: a second sealing gasket, and the second sealing gasket is arranged in a circular groove on the second cover plate.

[0011] Furthermore, a filter screen inclined downward is provided in the filter, and an outlet of the filter screen is connected to a discharge valve.

[0012] Furthermore, a pump body is provided on the discharge pipe, and the pump body is used to discharge the material from the semicircular discharge storage tank to the discharge pipe.

[0013] Furthermore, each interface of the feed pipe and the discharge pipe is provided with a connecting flange.

[0014] The beneficial effects of this application are:

[0015] The discharge tank of the present application includes a semicircular discharge tank, a feed pipe, a closed feed assembly, a filter, a discharge pipe and a one-way valve unit; the closed feed assembly is arranged at one end of the feed pipe, the filter is arranged at the other end of the feed pipe, and the filter connects the feed pipe with the semicircular discharge tank; the one-way valve unit includes a first one-way valve arranged on the feed pipe and a second one-way valve arranged on the discharge pipe; the discharge pipe is connected to the bottom end of the semicircular discharge tank, and the semicircular discharge tank is conducive to reducing material residue and improving discharge efficiency; the closed feed assembly can effectively prevent direct contact between materials and air during the feeding process, reducing safety risks caused by material leakage or volatilization. In other words, the technical solution of the present application has good sealing performance and can effectively reduce environmental risks in the urea production process.

[0016] The present application sets a first buckle on the first cover plate, connects the first cover plate to the pipe mouth of the material delivery pipe, presses the first buckle down, and makes the first buckle abut against the plane of the pipe mouth of the material delivery pipe. Then, the position of the first buckle is aligned with the position of the first fastener, so that the first bolt can abut against the first buckle after passing through the first ear plate, thereby fastening the first cover plate, solving the problem that the connection fastened by the bolt may gradually loosen due to vibration, temperature change or long-term use in the prior art, resulting in material leakage or connection failure, and the problem that the bolt-nut fixing method is cumbersome to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of the discharge trough provided by the utility model;

[0018] Figure 2 A schematic diagram of a closed feed assembly provided by the utility model;

[0019] Figure 3 A schematic diagram of a closed discharging assembly provided by the utility model;

[0020] Figure 4 A cross-sectional view of some components of the discharge trough provided by the utility model.

[0021] Explanation of the reference numerals in the accompanying drawings: 1. semicircular discharge storage tank; 2. feed pipe; 3. closed feed assembly; 4. filter; 5. discharge pipe; 6. one-way valve unit; 61. first one-way valve; 62. second one-way valve; 7. closed discharge assembly; 8. pump body; 9. connecting flange; 31. first cover plate; 21. first fastener; 211. first bolt; 212. first ear plate; 32. first buckle; 33. first sealing gasket; 71. second cover plate; 51. second fastener; 511. second bolt; 512. second ear plate; 72. second buckle; 73. second sealing gasket; 41. filter screen; 42. discharge valve; 8. pump body; 9. connecting flange. DETAILED DESCRIPTION

[0022] 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 this application.

[0023] like Figure 1The schematic diagram of the structure of a discharge trough shown in the figure is a discharge trough, characterized in that it includes a semicircular discharge storage tank 1, a material delivery pipe 2, a closed feed assembly 3, a filter 4, a discharge pipe 5 and a one-way valve unit 6; the closed feed assembly 3 is arranged at one end of the material delivery pipe 2, and the filter 4 is arranged at the other end of the material delivery pipe 2, and the filter 4 connects the material delivery pipe 2 and the semicircular discharge storage tank 1; the one-way valve unit 6 includes a first one-way valve 61 arranged on the material delivery pipe 2 and a second one-way valve 62 arranged on the discharge pipe 5; the discharge pipe 5 is connected to the bottom end of the semicircular discharge storage tank 1, and the semicircular discharge storage tank 1 is arranged below the ground.

[0024] Specifically, during the implementation process, the above-mentioned closed feeding component 3 and the first one-way valve 61 are both in a closed state in the initial state to ensure the isolation between the external environment and the conveying pipe 2. During the feeding process, it is necessary to open the above-mentioned first one-way valve 61 first so that the material can flow in the conveying pipe 2 after entering. Secondly, the above-mentioned closed feeding component 3 is opened to open it and allow the material to enter the conveying pipe 2. After the material passes through the first one-way valve 61, it enters the filter 4 for filtration. The filtered material enters the interior of the semicircular discharge storage tank 1 through the connecting port between the filter 4 and the semicircular discharge storage tank 1. The material accumulates at the bottom of the semicircular discharge storage tank 1 to reduce the residue of the material on the inner wall of the storage tank. Finally, the material is discharged from the discharge pipe 5 through the bottom end of the above-mentioned semicircular discharge storage tank 1. During the storage process, the above-mentioned closed feeding component 3 and the first one-way valve 61 can be closed at any time as needed to stop feeding. During the entire implementation process, the safety and controllability of the material during the flow process are ensured by the arrangement of the closed feed assembly 3 and the first one-way valve 61, thereby effectively reducing the environmental risks in the urea production process.

[0025] Furthermore, the filter 4 is used to filter impurities in the material. Specifically, various impurities, such as solid particles, dust, fibers, etc., may be mixed into materials such as ammonium carbonate solution during production, storage and transportation. If these impurities enter the storage tank directly without treatment, they may affect the quality of the solution in the storage tank, affecting the stability of the process and the quality of the product. And after the impurities enter the storage tank, they may be deposited at the bottom of the storage tank or attached to the wall of the storage tank. Long-term accumulation may cause problems such as blockage and corrosion. Therefore, the embodiment of the present application is provided with a filter 4 for filtering impurities between the feed pipe 2 and the semicircular discharge storage tank 1, which can effectively ensure the stability of the production process.

[0026] Based on the above embodiments, continue to refer to Figure 4 . Figure 4A cross-sectional view of some components of the discharge tank is shown. In one implementation, a filter screen 41 tilted downward is provided in the filter 4, and the outlet of the filter screen 41 is connected to a discharge valve 42. Specifically, during the feeding process, the filter screen 41 tilted downward allows materials such as ammonium carbonate solution to enter the semicircular discharge tank 1 along the infusion pipe 2, while impurities accumulate along the inclination angle of the filter screen, and then are discharged through the discharge valve 42 provided at the outlet of the filter screen 41. Optionally, in order to avoid clogging of the feeding pipe 2, the discharge valve 42 can be set to open at a fixed time to discharge impurities.

[0027] Figure 2 The specific structure of the closed feed assembly 3 is shown. Figure 2 As shown, the closed feeding assembly 3 includes a first cover plate 31 and a plurality of first fasteners 21 arranged at the pipe mouth of the feed pipe 2, wherein the first fastener 21 includes a first bolt 211 and a first ear plate 212; a plurality of first buckles 32 are also hingedly arranged on the first cover plate 31; the first bolt 211 is used to pass through the first ear plate 212 and abut against the first buckle 32 when tightened, so as to close the passage between the first cover plate 31 and the feed pipe 2; or release the first buckle 32 when the first bolt 211 is loosened, so that the first cover plate 31 rotates relative to the feed pipe 2, so as to open the passage between the first cover plate 31 and the feed pipe 2.

[0028] Specifically, the prior art generally requires drilling holes on the pipe mouth and the cover plate, passing bolts through the corresponding holes on the pipe mouth and the cover plate, and fastening the cover plate with nuts. In this way, due to vibration, temperature changes or long-term use, the connection fastened by bolts may gradually loosen, resulting in material leakage or connection failure. In addition, disassembly and assembly are cumbersome, and parts are easily lost during disassembly and assembly. In the embodiment of the present application, a first buckle 32 is provided on the first cover plate 31, the first cover plate 31 is connected to the pipe mouth of the feed pipe 2, and the first buckle 32 is pressed down so that the first buckle 32 abuts against the plane of the pipe mouth of the feed pipe 2. Then, the position of the first buckle 32 is aligned with the position of the first fastener 21, so that the first bolt 211 can abut against the first buckle 32 after passing through the first ear plate 212, thereby fastening the first cover plate 31. The first ear plate 212 is provided with a threaded hole. When there is a need to feed, the closed feeding assembly 3 of the embodiment of the present application loosens the first bolt 211 to release the abutment between the first bolt 211 and the first clip 32, and then rotates the first cover plate 31 to make the first clip 32 and the first fastener 21 misaligned, and then the first cover plate 31 can be removed to allow the material to enter the delivery pipe 2.

[0029] It should be understood that the first fasteners 21 and the first buckles 32 should be provided in the same number and in one-to-one correspondence.

[0030] Optionally, the first buckle 32 may be detachably disposed on the first cover plate 31 .

[0031] Furthermore, in order to enhance the sealing effect of the closed feed assembly 3 , in one implementation, the closed feed assembly 3 further includes: a first sealing gasket 33 , wherein the first sealing gasket 33 is disposed in a circular groove on the first cover plate 31 .

[0032] In view of the fluidity of materials such as ammonium carbonate solution, when preventing material input or leakage, tighten the first bolt 211 to increase the pre-tightening force of the first bolt 33, so that the first sealing gasket 33 is tightly squeezed between the first cover plate 31 and the feed pipe 2, thereby achieving complete closure of the feed channel.

[0033] The closed feed assembly 3 of this embodiment can control the connection state of the first cover plate by the tightening and loosening state of the first bolt through the arrangement of the first fastener 21 and the first buckle 32, so as to open and close the channel of the feed pipe 2, and has the advantages of simple structure, convenient operation and good sealing. In practical applications, it can effectively improve the continuity and safety of the production process.

[0034] Figure 3 The specific structure of the closed discharging assembly 7 is shown. Figure 3 As shown, in one implementation, a closed discharge assembly 7 is provided at the other end of the discharge pipe 5, and the closed discharge assembly 7 includes a second cover plate 71 and a plurality of second fasteners 51 arranged at the pipe mouth of the discharge pipe 5, and the second fastener 51 includes a second bolt 511 and a second ear plate 512; a plurality of second buckles 72 are also hingedly provided on the second cover plate 71; the second bolt 511 is used to pass through the second ear plate 512 and abut the second buckle 72 when tightened, so as to close the passage between the second cover plate 71 and the discharge pipe 5; or release the second buckle 72 when the second bolt 511 is relaxed, so that the second cover plate 71 rotates relative to the discharge pipe 5, and the passage between the second cover plate 71 and the discharge pipe 5 is opened.

[0035] Specifically, the structure and connection method of the above-mentioned closed discharge component 7 can refer to the structure and connection method of the closed feed component 3 in the above embodiment, and will not be repeated here.

[0036] In one implementation, the sealed discharging assembly 7 further includes: a second sealing gasket 73 , and the second sealing gasket 73 is disposed in a circular groove on the second cover plate 71 .

[0037] Specifically, the second sealing gasket 73 may refer to the description of the first sealing gasket 33 in the above embodiment, which will not be repeated here.

[0038] In one implementation, a pump body 8 is provided on the discharge pipe 5 , and the pump body 8 is connected to the discharge pipe 5 and the closed discharge assembly 7 , and is used to discharge the material from the semicircular discharge storage tank 1 to the discharge pipe 5 .

[0039] Specifically, due to the requirements of environmental protection and safety, the carbon ammonium liquid discharge tank is usually set underground, and one end of the discharge pipe 5 is connected to the bottom of the semicircular discharge storage tank 1, and the other end is connected from the underground to the ground. Therefore, in order to ensure that the material is discharged safely and efficiently from the semicircular discharge storage tank 1, a pump body 8 is arranged on the discharge pipe 5. The pump body 8 sucks the material in the semicircular discharge storage tank 1 through the discharge pipe 5 by suction, and pressurizes and pushes it to the closed discharge assembly 7 for discharge, which can effectively improve the efficiency and safety of material discharge.

[0040] In one implementation, each interface of the feed pipe 2 and the discharge pipe 5 is provided with a connecting flange 9. The connecting flange 9 has the advantages of simple structure and convenient disassembly, and the connecting flange 9 has the functions of sealing, fixing and buffering. In the urea device, the interfaces of the feed pipe 2 and the discharge pipe 5 are connected by the connecting flange 9, which not only makes the installation, maintenance and replacement of the device more convenient, but also effectively prevents fluid or gas from leaking from the interface, and prevents the feed pipe 2 and the discharge pipe 5 from moving or deforming, thereby effectively reducing the environmental risks in the urea production process.

[0041] It can be seen that the discharge chute of the embodiment of the present application can effectively prevent direct contact between materials and air during the feeding process, reduce the safety risks caused by material leakage or volatilization, has good sealing properties, and can effectively reduce the environmental risks in the urea production process.

[0042] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. The term "multiple" means more than two including two, similarly, "multiple groups" means more than two groups including two groups, and "multiple sheets" means more than two sheets including two sheets.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A discharge trough, characterized in that: It comprises a semicircular discharge storage tank (1), a material delivery pipe (2), a closed material feeding assembly (3), a filter (4), a material discharge pipe (5) and a one-way valve unit (6); The sealed feed assembly (3) is arranged at one end of the feed pipe (2), and the filter (4) is arranged at the other end of the feed pipe (2), and the filter (4) connects the feed pipe (2) and the semicircular discharge storage tank (1); The one-way valve unit (6) comprises a first one-way valve (61) arranged on the material delivery pipe (2) and a second one-way valve (62) arranged on the material discharge pipe (5); The discharge pipe (5) is in communication with the bottom end of the semicircular discharge storage tank (1).

2. The discharge trough according to claim 1, characterized in that The sealed feed assembly (3) comprises a first cover plate (31) and a plurality of first fasteners (21) arranged at the pipe mouth of the feed pipe (2), wherein the first fasteners (21) comprise a first bolt (211) and a first ear plate (212); the first cover plate (31) is also hingedly provided with a plurality of first buckles (32); The first bolt (211) is used to pass through the first ear plate (212) and abut against the first buckle (32) when in a tightened state, so as to close the passage between the first cover plate (31) and the material conveying pipe (2); Alternatively, the first buckle (32) is released when the first bolt (211) is loosened, so that the first cover plate (31) rotates relative to the material conveying pipe (2), thereby opening the passage between the first cover plate (31) and the material conveying pipe (2).

3. The discharge trough according to claim 2, characterized in that The closed feed assembly (3) further comprises: a first sealing gasket (33), wherein the first sealing gasket (33) is arranged in a circular groove on the first cover plate (31).

4. The discharge trough according to claim 1, characterized in that A sealed discharge assembly (7) is provided at the other end of the discharge pipe (5), and the sealed discharge assembly (7) comprises a second cover plate (71) and a plurality of second fasteners (51) provided at the pipe mouth of the discharge pipe (5), and the second fasteners (51) comprise a second bolt (511) and a second ear plate (512); a plurality of second buckles (72) are also hingedly provided on the second cover plate (71); The second bolt (511) is used to pass through the second ear plate (512) and abut against the second buckle (72) when in a tightened state, so as to close the passage between the second cover plate (71) and the discharge pipe (5); Alternatively, the second buckle (72) is released when the second bolt (511) is loosened, so that the second cover plate (71) rotates relative to the discharge pipe (5), thereby opening the passage between the second cover plate (71) and the discharge pipe (5).

5. The discharge trough according to claim 4, characterized in that The sealed discharge assembly (7) further comprises: a second sealing gasket (73), wherein the second sealing gasket (73) is arranged in a circular groove on the second cover plate (71).

6. The discharge trough according to claim 1, characterized in that A filter screen (41) tilted downward is arranged in the filter (4), and an outlet of the filter screen (41) is connected to a discharge valve (42).

7. The discharge trough according to claim 1, characterized in that The discharge pipe (5) is provided with a pump body (8), and the pump body (8) is used to discharge the material from the semicircular discharge storage tank (1) to the discharge pipe (5).

8. The claim according to any one of claims 1 to 7, characterized in that: Each interface of the material delivery pipe (2) and the material discharge pipe (5) is provided with a connecting flange (9).

Images