Secondary filtering device for preventing blockage of carbide slag emulsion

Abstract

The utility model relates to a secondary filtering device for preventing blockage of carbide slag emulsion. The secondary filtering device for preventing blockage of the carbide slag emulsion is characterized in that a primary filtering device is mounted in a liquid outlet pool of a carbide slag emulsion pool and is used for primarily filtering the carbide slag emulsion flowing out of the carbide slag emulsion pool; the secondary filtering system is mounted in a tank opening in the top of the gas pipe storage tank and is used for carrying out secondary filtering on the carbide slag emulsion. According to the scheme, large-particle impurities can be effectively intercepted through the primary filtering device, and the situation that the impurities enter a conveying pipeline is reduced; fine impurities are further intercepted through a filter screen of the secondary filtering system, the impurities are ensured not to enter the next process, and the blockage problem of the pipeline, the storage tank and the pump is greatly reduced by effectively intercepting the impurities.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of emulsion filtration, in particular to a secondary filtration device for preventing calcium carbide slag emulsion blockage. BACKGROUND

[0002] In the sulfurization method treatment process of waste acid, calcium carbide slag emulsion is widely used as an alkaline neutralizing agent in the neutralization treatment of acidic waste liquid. In the traditional process, the transportation of calcium carbide slag emulsion generally includes: after the emulsion is prepared in a calcium carbide slag emulsion pool, it is transported into a storage tank through a conveying pipeline, and then is transported to a reaction tank by a dosing pump. However, in the actual production process, the preparation method of calcium carbide slag emulsion is usually to form emulsion by washing calcium carbide slag with water, and a large amount of impurities such as plastic film, woven bag fragments and other insoluble particulate matter are often entrained in the calcium carbide slag raw material. These impurities enter the conveying system with the emulsion, and are easily accumulated at the inlet of the pipeline, storage tank and pump, causing fluid transportation to be blocked, and even causing equipment blockage and shutdown, which seriously affects the continuity and stability of production.

[0003] The existing filtration device has the disadvantages of poor filtration effect and difficulty in intercepting impurities. Specifically, although the calcium carbide slag emulsion collection pool sedimentation method can remove part of the high-density particulate matter, it has poor effect on low-density floating impurities. Plastic skin, foam and other light impurities still enter the conveying system with the emulsion, and are filtered through the screen mesh at the outlet of the calcium carbide slag emulsion collection pool, but only large-particle light impurities can be filtered, and many small-particle impurities still enter the conveying system, causing blockage of the pipeline, storage tank and pump. The current solution relies on manual periodic cleaning of impurities in the pipeline, storage tank and pump inlet. This cleaning process is time-consuming and labor-intensive, especially after blockage occurs, the equipment needs to be disassembled for cleaning, which further increases the maintenance difficulty and labor cost. CONTENT OF THE UTILITY MODEL

[0004] To solve or partially solve the problems in the related art, the present application provides a secondary filtration device for preventing calcium carbide slag emulsion blockage, aiming to solve the problems of poor filtration effect and difficulty in intercepting impurities of the existing filtration device.

[0005] The present application provides a secondary filtration device for preventing calcium carbide slag emulsion blockage, comprising:

[0006] A calcium carbide slag emulsion pool, a conveying pipeline, a storage tank, a primary filtration device and a secondary filtration system. The outlet pool of the calcium carbide slag emulsion pool is connected to the storage tank through the conveying pipeline, and a vacuum pump is installed on the conveying pipeline to extract calcium carbide slag emulsion into the storage tank.

[0007] The primary filtering device is installed in the liquid outlet tank of the carbide slag emulsion tank, and the carbide slag emulsion flowing out of the carbide slag emulsion tank is preliminarily filtered; the primary filtering device comprises a fixed frame, a first screen, a second screen, an ultrasonic vibrator, a cleaning system and a through hole, the fixed frame is a detachable square frame structure; the cleaning system is installed in the sliding groove of the fixed frame, the ultrasonic vibrator is divided into two rows and installed on the cleaning system, the cleaning system is provided with a through hole for connecting with an external control system; the first screen and the second screen are installed in the sliding groove of the fixed frame and correspond to the two rows of ultrasonic vibrators on the cleaning system respectively, the first screen is installed above the second screen, and the grid density of the second screen is greater than that of the first screen.

[0008] The secondary filtering system is installed in the tank opening at the top of the gas pipe storage tank, and the carbide slag emulsion is filtered twice.

[0009] Optionally, in some embodiments, the gas pipe secondary filtering system comprises a feeding pipe, a secondary screen, a fixed ring, a gas nozzle and a gas pipe.

[0010] The gas pipe feeding pipe is installed at the top of the storage tank, the fixed ring is installed in the middle of the inner side of the feeding pipe, the secondary screen is installed on the fixed ring, and the grid density of the secondary screen is greater than that of the second screen.

[0011] The gas pipe is installed on the inner side of the feeding pipe below the fixed ring, the gas pipe is semicircular, and the gas pipe is connected with an external compressed gas pipeline.

[0012] The gas pipe is provided with two rows of gas nozzles with different angles upward, and the two rows of gas nozzles are used for blowing and washing the secondary screen above.

[0013] Optionally, in some embodiments, the primary filtering device and the secondary filtering system are made of corrosion-resistant materials to adapt to long-term immersion working conditions.

[0014] The technical scheme provided by the application can have the following beneficial effects:

[0015] The primary filtering device effectively intercepts larger impurities, reducing the entry of these impurities into the conveying pipeline; the secondary filtering system further intercepts small impurities through the filter screen, ensuring that the impurities do not enter the next process, and through effective interception of the impurities, the blockage of the pipeline, the storage tank and the pump is greatly reduced, thereby reducing the downtime and the frequency of manual cleaning, the system can maintain stable operation, ensuring the production continuity and improving the working efficiency of the equipment. The primary filtering device adopts two layers of screens, effectively preventing impurities from accumulating, and the cleaning system and the ultrasonic vibrator are used for quickly cleaning the impurities on the screen surface, further preventing the screen from being blocked.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters indicate like elements throughout the drawings, and in which:

[0018] Figure 1 is a structural schematic diagram of the secondary filtration device for preventing calcium carbide slag emulsion blockage shown in the embodiments of the present application;

[0019] Figure 2 is a structural schematic diagram of the primary filtration device of the secondary filtration device for preventing calcium carbide slag emulsion blockage shown in the embodiments of the present application;

[0020] Figure 3 is a sectional view schematic diagram of the primary filtration device of the secondary filtration device for preventing calcium carbide slag emulsion blockage shown in the embodiments of the present application;

[0021] Figure 4 is a structural schematic diagram of the secondary filtration system of the secondary filtration device for preventing calcium carbide slag emulsion blockage shown in the embodiments of the present application;

[0022] Figure 5 is a sectional view schematic diagram of the secondary filtration system of the secondary filtration device for preventing calcium carbide slag emulsion blockage shown in the embodiments of the present application.

[0023] Reference signs: 1 - calcium carbide slag emulsion tank, 2 - primary filtration device, 201 - fixed frame, 202 - first screen, 203 - second screen, 204 - ultrasonic vibrator, 205 - cleaning system, 206 - through hole, 3 - vacuum pump, 4 - conveying pipeline, 5 - secondary filtration system, 501 - feeding pipe, 502 - secondary screen, 503 - fixed ring, 504 - air nozzle, 505 - air pipe, 6 - storage tank. DETAILED DESCRIPTION

[0024] Embodiments of the present application will be described in more detail by making reference to the accompanying drawings. While the embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0025] It should be understood that, although the terms "first", "second", "third", etc. can be used in this application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the application. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0026] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0027] Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Some filtering devices have poor filtering effect and difficulty in intercepting impurities. Specifically, although the calcium carbide slag milk collection tank sedimentation method can remove part of the high-density particulate matter, it has poor effect on low-density floating impurities. Plastic skin, foam and other light impurities still enter the conveying system with the emulsion, and are filtered through the screen of the calcium carbide slag milk collection tank outlet. However, only large-particle light impurities can be filtered, and many small-particle impurities still enter the conveying system, causing blockage of the pipeline, storage tank and pump. The current solution relies on manual periodic cleaning of impurities in the pipeline, storage tank and pump port. This cleaning process is time-consuming and labor-intensive, especially after the blockage occurs, the equipment needs to be disassembled for cleaning, which further increases the maintenance difficulty and labor cost.

[0029] In view of the above problems, the embodiment of the present application provides a secondary filtering device for preventing calcium carbide slag emulsion from being blocked, which can effectively intercept larger particle impurities through a primary filtering device, so as to reduce the entry of these impurities into a conveying pipeline; further intercept fine impurities through a secondary filtering system through a filter screen, so as to ensure that the impurities cannot enter the next process; through effective interception of the impurities, the blockage problem of the pipeline, the storage tank and the pump is greatly reduced, so that the downtime and the frequency of manual cleaning are reduced, the system can maintain stable operation, the production continuity is ensured, and the working efficiency of the equipment is improved.

[0030] The technical solutions of the embodiments of the present application are described in detail below with reference to the drawings.

[0031] Figure 1 FIG. 1 is a structural schematic diagram of a secondary filtering device for preventing calcium carbide slag emulsion from being blocked, which is shown in the embodiments of the present application.

[0032] Referring to Figure 1 A secondary filtering device for preventing calcium carbide slag emulsion from being blocked, comprising:

[0033] A calcium carbide slag emulsion pool 1, a primary filtering device 2, a fixed frame 201, a first screen 202, a second screen 203, an ultrasonic vibrator 204, a cleaning system 205, a through hole 206, a vacuum pump 3, a conveying pipeline 4, a secondary filtering system 5, a feeding pipe 501, a secondary screen 502, a fixed ring 503, an air nozzle 504, an air pipe 505 and a storage tank 6;

[0034] The liquid outlet of the calcium carbide slag emulsion pool 1 is connected to the storage tank 6 through the conveying pipeline 4, and the vacuum pump 3 is installed on the conveying pipeline 4 to extract the calcium carbide slag emulsion into the storage tank 6.

[0035] The primary filtering device 2 is installed in the liquid outlet of the calcium carbide slag emulsion pool 1 through a support, and the upper end of the primary filtering device 2 is higher than the liquid outlet of the calcium carbide slag emulsion pool 1, so as to ensure that the surface of the calcium carbide slag emulsion does not exceed the primary filtering device 2, and the primary filtering device 2 is used for primary filtering of the calcium carbide slag emulsion flowing out of the calcium carbide slag emulsion pool 1. The primary filtering device 2 comprises: the fixed frame 201, the first screen 202, the second screen 203, the ultrasonic vibrator 204, the cleaning system 205 and the through hole 206. The fixed frame 201 is a square frame structure, the frame strips of the fixed frame 201 are fixed to each other through bolts, are made of corrosion-resistant steel, and the inner sides of the frame strips on the two sides of the fixed frame 201 are respectively provided with two rows of sliding grooves for mounting the first screen 202, the second screen 203 and the cleaning system 205.

[0036] The cleaning system 205 is installed in the sliding groove of the fixed frame 201 at the front end of the first screen 202 and the second screen 203, the ultrasonic vibrator 204 is divided into two rows and installed on the cleaning system 205, and corresponds to the two screens respectively, and the ultrasonic vibrator 204 is aligned with the screen surface. The cleaning system 205 is provided with a through hole 206, and the data transmission line of the external control system is connected to each ultrasonic vibrator 204 in the cleaning system 205 through the through hole 206, and the through hole 206 is waterproof sealed after installation. The first screen 202 and the second screen 203 are installed in the sliding groove of the fixed frame 201 after the cleaning system 205, and correspond to the two rows of ultrasonic vibrators 204 on the cleaning system 205 respectively. The ultrasonic vibrator 204 starts to emit ultrasonic waves every period of time, and the calcium carbide slag emulsion is used as a medium to push the large particle impurities on the screen to the edge of the fixed frame 201, without affecting the calcium carbide slag emulsion filtration of the screen. The first screen 202 is installed above the second screen 203, the grid density of the second screen 203 is greater than that of the first screen 202, the first screen 202 screens out large particle impurities, and the second screen 203 screens out smaller impurities, so that the impurities that can block the vacuum pump 3 are filtered out. And the two-layer screen structure can efficiently intercept solid particle impurities of different sizes, and also fix the filtered impurities on different screen surfaces, preventing the impurities from quickly accumulating and blocking the screen, and cooperating with the cleaning system 205 to effectively prevent the screen from being blocked.

[0037] The secondary filtering system 5 is installed in the tank opening at the top of the storage tank 6, and is used for secondary filtering of the calcium carbide slag emulsion. The secondary filtering system 5 comprises a feeding pipe 501, a secondary screen 502, a fixed ring 503, an air nozzle 504 and an air pipe 505. The feeding pipe 501 is installed at the top of the storage tank 6, the fixed ring 503 is welded to the inner side of the middle part of the feeding pipe 501, the secondary screen 502 is detachably installed on the fixed ring 503, and the grid density of the secondary screen 502 is greater than that of the second screen 203, so as to screen out fine particle impurities and avoid entering the next process stage. The air pipe 505 is installed on the inner side of the feeding pipe 501 below the fixed ring 503, and is located below the conveying pipeline 4. The air pipe 505 is semicircular, and the air pipe 505 is connected with an external compressed gas pipeline. The air pipe 505 is provided with two rows of air nozzles 504 with different angles upward, and the two rows of air nozzles 504 are used for washing the secondary screen 502 above, so as to blow the filtered fine particles to the secondary screen 502 opposite to the air pipe 505.

[0038] The primary filtering device 2 and the secondary filtering system 5 are made of corrosion-resistant materials such as 316L stainless steel or PP material, which is suitable for the chemical properties of the calcium carbide slag emulsion and prolongs the service life.

[0039] Having described various embodiments of the application, it is to be understood that the above description is meant not to limit and not to encompass all of the possible embodiments. Many modifications and variations of this application can be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. It is intended that the scope of the application be defined by the scope of the patent and by the claims as allowed by the patent office, which can include adaptations based on the description, equivalents, and / or substitutions of elements individually or collectively to the entire disclosure.

Claims

1. A secondary filtration device for preventing blockage of carbide slag emulsion, comprising: The system comprises a calcium carbide slag emulsion tank (1), a conveying pipeline (4), and a storage tank (6). The outlet tank of the calcium carbide slag emulsion tank (1) is connected to the storage tank (6) via the conveying pipeline (4). A vacuum pump (3) is installed on the conveying pipeline (4) to draw calcium carbide slag emulsion into the storage tank (6). The system is characterized in that the secondary filtration device for preventing blockage of the calcium carbide slag emulsion further includes: Primary filtration device (2) and secondary filtration system (5); The primary filtration device (2) is installed in the outlet pool of the carbide slag emulsion tank (1) to perform preliminary filtration on the carbide slag emulsion flowing out of the carbide slag emulsion tank (1). The primary filtration device (2) includes: a fixed frame (201), a first screen (202), a second screen (203), an ultrasonic transducer (204), a cleaning system (205), and a through hole (206). The fixed frame (201) is a detachable square frame structure. The cleaning system (205) is installed in the groove of the fixed frame (201). The ultrasonic transducer (204) is installed in two rows on the cleaning system (205). The cleaning system (205) is provided with a through hole (206) for connection to an external control system. The first screen (202) and the second screen (203) are installed in the groove of the fixed frame (201) and correspond to the two rows of ultrasonic transducers (204) on the cleaning system (205). The first screen (202) is installed above the second screen (203), and the mesh density of the second screen (203) is greater than that of the first screen (202). The secondary filtration system (5) is installed inside the tank opening at the top of the storage tank (6) to perform secondary filtration of the carbide slag emulsion.

2. The secondary filtration device for preventing blockage of carbide slag emulsion according to claim 1, characterized in that, The secondary filtration system (5) includes: Feed pipe (501), secondary screen (502), fixing ring (503), air nozzle (504) and air pipe (505); The feed pipe (501) is installed on the top of the storage tank (6), the fixing ring (503) is installed in the middle of the inner side of the feed pipe (501), and the secondary screen (502) is installed on the fixing ring (503). The mesh density of the secondary screen (502) is greater than that of the second screen (203). The air pipe (505) is installed on the inside of the feed pipe (501) under the fixed ring (503). The air pipe (505) is semi-arc-shaped and is connected to an external compressed gas pipeline. The air pipe (505) is equipped with two rows of upward-angled air nozzles (504). The two rows of air nozzles (504) have different angles and blow and wash the secondary screen (502) above.

3. The secondary filtration device for preventing blockage of carbide slag emulsion according to claim 1, characterized in that: The primary filtration device (2) and the secondary filtration system (5) are made of corrosion-resistant materials and are suitable for long-term immersion conditions.

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