Flow divider

Abstract

The utility model relates to the technical field of liquid flow division, in particular to a flow divider, which solves the problems that in the prior art, a filtering piece needs to be completely detached when slag stone penetrating through the filtering piece is cleaned, and the cleaning efficiency is low, and comprises an upper cylinder body and a lower cylinder body, the upper cylinder body is communicated with the lower cylinder body, and the filtering piece is arranged in the upper cylinder body. The slurry outlet side of the filter part is communicated with the slurry outlet of the upper cylinder body, and the slurry inlet side of the filter part is communicated with the lower cylinder body; the upper cylinder is provided with a slag discharging assembly used for controlling the communicating state of the two sides of the filtering piece. The device has the beneficial effects that the slag discharging assembly is arranged to control the communication state of the two sides of the filtering piece, when too many slag stones are accumulated on the slurry outlet side of the filtering piece, the slag discharging assembly acts to communicate the two sides of the filtering piece, and then the slag stones accumulated on the slurry outlet side of the filtering piece enter the slurry inlet side of the filtering piece again; the slag stones on the slurry outlet side of the filtering piece are cleaned without dismantling the filtering piece, the problem that the filtering piece is blocked due to accumulation of the slag stones is avoided, and the cleaning efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid diversion technology, and in particular to a diverter. Background Technology

[0002] Slurry discharge from slurry shield tunneling machines is a crucial step in construction. However, problems such as sludge buildup in the slurry chamber or air cushion chamber and blockage of the slurry discharge pipe remain persistent challenges in the industry. These issues often lead to downtime, severely restricting the tunneling efficiency of the shield machine and making it difficult to guarantee the tunnel construction schedule. To improve these problems, many slurry shield tunneling machines have introduced a local slurry circulation mode. The purpose of this mode is to increase the slurry flow rate and velocity while keeping the slurry discharge pipe diameter unchanged, thereby increasing the slurry's muck-carrying capacity and alleviating problems such as sludge buildup in the chamber and blockage of the slurry discharge pipe. As a key component in the operation of this mode, the flow divider plays a vital role.

[0003] Existing technology, patent CN221692949U, discloses a liquid distributor, including an inlet pipe. A filter cartridge is mounted on the inner wall of the inlet pipe via a positioning mechanism. An L-shaped plate is fixedly mounted on one side of the filter cartridge, and an mounting groove is formed at the top of the L-shaped plate. An mounting block is mounted on one side of the inlet pipe via a moving mechanism, with the inner wall of the mounting groove cooperating with the surface of the mounting block. A limiting mechanism is provided on one side of the inlet pipe. The filter cartridge of the aforementioned distributor can filter the passing liquid; however, after prolonged use, small particles or slag still pass through the filter cartridge after filtration, and some small particles of slag deposit on the slurry outlet side of the filter element, causing blockage at the bottom of the filter cartridge, affecting the slurry flow rate, and consequently affecting the slurry filtration efficiency. Cleaning is then required, which necessitates completely removing the filter cartridge from the inlet pipe. The cleaning process is cumbersome and complex, resulting in low filter cartridge cleaning efficiency and reduced overall distributor efficiency. Utility Model Content

[0004] This utility model proposes a diverter that solves the problem in the prior art where the filter element needs to be completely removed when cleaning slag and stone passing through the filter element, resulting in low cleaning efficiency.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A diverter includes an upper cylinder and a lower cylinder, which are connected. A filter element is installed inside the upper cylinder, with its outlet side connected to the outlet of the upper cylinder and its inlet side connected to the lower cylinder. A slag discharge assembly is provided on the upper cylinder to control the connection between the two sides of the filter element. When excessive slag accumulates on the outlet side of the filter element, the slag discharge assembly activates, connecting the two sides of the filter element. This allows the accumulated slag on the outlet side to re-enter the inlet side of the filter element, i.e., the slag re-enters the lower cylinder. This achieves slag removal without removing the filter element, avoiding filter element clogging caused by slag accumulation and improving cleaning efficiency.

[0007] The slag discharge assembly is located on the slurry outlet side of the filter element. The slag and gravel on the slurry inlet side of the filter element are numerous and large in volume. After the slurry and gravel are filtered by the filter element, the number and volume of slag and gravel entering the slurry outlet side of the filter element are small. This allows the filter element to protect the slag discharge assembly, effectively reducing the impact of slag and gravel on the slag discharge assembly and enhancing the stability of the slag discharge assembly in use.

[0008] The filter element is a cylindrical structure. The inner side of the cylindrical structure communicates with the slurry outlet of the upper cylinder, and the outer side communicates with the lower cylinder. Filter holes are provided on the sidewalls of the cylindrical structure. The upper end of the cylindrical structure is connected to the upper cylinder, and the slag discharge assembly is sealed to the lower end of the cylindrical structure. The cylindrical structure provides higher structural stability, allowing the filter element to remain stable when subjected to impacts from mud and slag, thus improving its operational stability. The filter holes can discharge slag larger than the pore size onto the outer side of the cylindrical structure.

[0009] The upper end of the cylindrical structure is connected to an mounting plate, which is detachably connected to the upper cylinder. The mounting plate seals the upper end of the cylindrical structure to prevent slag and stone from entering the inner side of the cylindrical structure through the upper end; and when the filter element is damaged, it can be removed from the upper cylinder for repair and replacement through the mounting plate.

[0010] The upper cylinder is equipped with a branch pipe, the inlet end of which is connected to the inner side of the cylindrical structure, and the outlet end of which extends out of the upper cylinder. The outlet end of the branch pipe is connected to a pump unit, which discharges the filtered slurry from the upper cylinder through the branch pipe.

[0011] The slag unloading assembly includes a telescopic component and a sealing component. The telescopic component is connected to the sealing component via a guide rod, and the sealing component engages with the lower end of the cylindrical structure to seal it. The telescopic component's extension and retraction can move the sealing component via the guide rod, thus switching the sealing state of the sealing component at the lower end of the cylindrical structure.

[0012] The guide rod is equipped with a positioning ring, which slides in contact with the inner wall of the cylindrical structure. When the sealing component removes its seal on the cylindrical structure, the positioning ring provides stability, preventing the sealing component from shifting significantly due to impact from slag and thus avoiding a situation where the telescopic component cannot retract.

[0013] The upper side of the sealing component is provided with a conical surface. The conical surface guides the slag and stone accumulated inside the cylindrical structure, preventing the slag and stone from accumulating on the sealing component; at the same time, the conical surface can better fit with the lower end of the cylindrical structure, ensuring the sealing effect of the sealing component.

[0014] The upper cylinder is arranged vertically, and the lower cylinder is arranged horizontally. The lower end of the upper cylinder is detachably connected to the middle of the lower cylinder. By setting the upper cylinder as a vertical pipe, according to the slurry flow pattern, very little slag and stone flows through the upper cylinder, and what flows through is mostly small particles, thus solving the inherent defect of traditional filter elements that are prone to clogging.

[0015] A valve is installed between the upper and lower cylinders. Maintenance of the filter elements or slag discharge assembly does not affect the flow of slurry within the lower cylinder, allowing for maintenance without shutting down the equipment.

[0016] The beneficial effects of this utility model are:

[0017] 1. By setting up a slag discharge assembly to control the connection status of both sides of the filter element, when too much slag accumulates on the discharge side of the filter element, the slag discharge assembly will activate to connect both sides of the filter element, thereby allowing the slag accumulated on the discharge side of the filter element to re-enter the inlet side of the filter element. This achieves the cleaning of slag on the discharge side of the filter element without removing the filter element, avoiding the problem of filter element blockage caused by slag accumulation and improving cleaning efficiency.

[0018] 2. The filter element is installed in the upper cylinder, which is a vertical pipe. According to the slurry flow law, only a small amount of small-diameter slag enters the upper cylinder, which solves the inherent defect of traditional filter elements being prone to clogging. The filter element is detachably connected to the upper cylinder through the mounting plate. When the filter element is damaged, it can be removed from the upper cylinder through the mounting plate for repair and replacement.

[0019] 3. A valve is installed between the upper and lower cylinders. The valve can be closed during maintenance of the filter elements or slag discharge components without affecting the flow of slurry in the lower cylinder, thus enabling maintenance without shutting down the equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a shunt structure according to the present invention;

[0022] Figure 2This is a half-section schematic diagram of the splitter;

[0023] Figure 3 This is a schematic diagram of the filter element structure;

[0024] Figure 4 This is a schematic diagram of the slag unloading assembly structure;

[0025] Figure 5 This is a schematic diagram of the shunt's usage;

[0026] Figure 6 This is a schematic diagram of the splitter structure in Example 3;

[0027] Figure 7 This is a schematic diagram of the splitter structure in Example 4.

[0028] In the diagram: 1. Upper cylinder, 2. Lower cylinder, 3. Mounting plate, 4. Branch pipe, 5. Slag discharge assembly, 51. Telescopic component, 52. Guide rod, 53. Positioning ring, 54. Sealing component, 6. Filter component, 7. Connecting flange, 8. Valve. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1, as Figure 1 As shown, a diverter includes an upper cylinder 1 and a lower cylinder 2, which are connected. A filter element 6 is installed inside the upper cylinder 1. The discharge side of the filter element 6 is connected to the discharge port of the upper cylinder 1, and the inlet side of the filter element 6 is connected to the lower cylinder 2. A slag discharge assembly 5 is installed on the upper cylinder 1 to control the connection between the two sides of the filter element 6. Slurry enters the lower cylinder 2 and then enters the upper cylinder 1. After being filtered by the filter element 6 inside the upper cylinder 1, the slag is discharged from the upper cylinder 1. When excessive slag accumulates on the discharge side of the filter element 6, the slag discharge assembly 5 activates, connecting the two sides of the filter element 6. This allows the slag accumulated on the inlet side of the filter element 6 to pass through the slag discharge assembly and re-enter the inlet side of the filter element 6. This achieves the cleaning of the slag on the discharge side of the filter element 6 without removing the filter element, avoiding clogging of the filter element 6 due to slag accumulation and improving cleaning efficiency.

[0031] Furthermore, the slag discharge assembly 5 is located on the slurry outlet side of the filter element 6. The slurry inlet side of the filter element 6 is connected to the lower cylinder 2. The slurry in the lower cylinder 2 contains a large quantity and volume of slag. After being filtered by the filter element 6, the slurry enters the slurry outlet side of the filter element 6. After being filtered by the filter element 6, the slurry contains fewer and smaller slag, reducing the contact between the slag discharge assembly 5 and the slag. This allows the filter element 6 to protect the slag discharge assembly 5, effectively reducing the impact of slag on the slag discharge assembly 5 and enhancing the stability of the slag discharge assembly in use.

[0032] like Figure 5 As shown, when the diverter is in use, the lower cylinder 2 is installed on the slurry discharge pipeline, and the upper cylinder 1 is connected to the soil chamber through a branch pump set. The flow rate of the pipeline between the lower cylinder 2 and the soil chamber is equal to the sum of the flow rate between the upper cylinder 1 and the soil chamber and the flow rate of the slurry discharge pipeline outside the lower cylinder 2. Under the condition that the configuration of the slurry discharge pipeline remains unchanged, the local slurry discharge flow rate is increased. At this time, the slurry flow velocity in the pipeline between the lower cylinder 2 and the soil chamber is increased, the slag carrying capacity is enhanced, and the problems of sludge stagnation in the soil chamber and blockage of the slurry discharge pipe can be better alleviated.

[0033] Example 2, based on Example 1, a shunt, such as Figure 3 , Figure 4 As shown, the filter element 6 is a cylindrical structure. The inner side of the filter element 6 is the slurry outlet side, and the outer side is the slurry inlet side. That is, the inner side of the cylindrical structure is connected to the slurry outlet of the upper cylinder 1, and the outer side of the cylindrical structure is connected to the lower cylinder 2. Filter holes are provided on the side wall of the cylindrical structure. The upper end of the cylindrical structure is connected to the upper cylinder 1, and the slag discharge assembly 5 is sealed to the lower end of the cylindrical structure. The cylindrical structure has higher structural stability, which makes the filter element 6 stable when subjected to the impact of mud and slag, thus improving the stability of the filter element 6 in use. The filter holes can discharge slag larger than the pore diameter to the outside of the cylindrical structure.

[0034] Furthermore, such as Figure 3 As shown, an mounting plate 3 is connected to the upper end of the cylindrical structure, and the mounting plate 3 is detachably connected to the upper cylinder 1. The mounting plate 3 seals the upper end of the cylindrical structure to prevent slag from entering the inner side of the cylindrical structure through the upper end; and when the filter element 6 is damaged, the filter element 6 can be removed from the upper cylinder 1 through the mounting plate 3 for repair and replacement.

[0035] Furthermore, such as Figure 2 As shown, the upper cylinder 1 is equipped with a branch pipe 4. The inlet end of the branch pipe 4 is connected to the inner side of the cylindrical structure, and the outlet end of the branch pipe 4 extends out of the upper cylinder 1. The outlet end of the branch pipe 4 is connected to a pump unit, which discharges the filtered slurry from the upper cylinder through the branch pipe 4. The slurry filtered by the filter element 6 enters the inner side of the filter element 6, and then enters the pump unit through the branch pipe 4, where the pump unit discharges the slurry.

[0036] Furthermore, such as Figure 4As shown, the slag unloading assembly 5 includes a telescopic component 51 and a sealing component 54. The telescopic component 51 is connected to the sealing component 54 via a guide rod 52, and the sealing component 54 engages with the lower end of the cylindrical structure to seal it. The telescopic component 51 can be any one of a hydraulic cylinder, a pneumatic cylinder, or an electric push rod. In this embodiment, the telescopic component 51 is a hydraulic cylinder. The hydraulic cylinder extends and retracts, causing the guide rod 52 to move up and down, thereby causing the sealing component 54 to seal or open the lower end of the cylindrical structure.

[0037] Furthermore, a positioning ring 53 is provided on the guide rod 52, which slides in conjunction with the inner wall of the cylindrical structure. When the sealing component 54 removes its seal on the cylindrical structure, the positioning ring 53 plays a stabilizing role, preventing the sealing component 54 from being significantly displaced by the impact of slag and thus avoiding a situation where the telescopic component 51 cannot retract.

[0038] Furthermore, the upper side of the sealing component 54 is provided with a conical surface. The conical surface guides the slag and stone accumulated inside the cylindrical structure, preventing the slag and stone from accumulating on the sealing component 54; at the same time, the conical surface can better fit with the lower end of the cylindrical structure, ensuring the sealing effect of the sealing component.

[0039] The installation process of the diverter is as follows: First, connect the lower cylinder 2 to the slurry discharge pipe of the slurry shield tunnel in place; then, install the filter element 6 onto the upper cylinder 1 through the mounting plate 3; then assemble the slag discharge assembly 5, and bolt the telescopic component 51, guide rod 52, positioning ring 53, and sealing component 54 into place; then connect the entire slag discharge assembly (5) and the mounting plate 3 on the filter element 6. At this time, the upper cylinder 1, the filter element 6, and the slag discharge assembly 5 have been bolted together as a whole; finally, bolt the flange between the upper cylinder 1 and the lower cylinder 2 into place, and the upper cylinder 1 should be vertically upward; finally, connect the branch pipe 4 on the upper cylinder 1 to the branch pump group; the entire diverter installation is completed.

[0040] In practical use: such as Figure 4 , Figure 5 As shown, the soil chamber slurry discharge operation is started. The lower cylinder 2 is part of the slurry discharge pipeline of the slurry shield tunnel. When the slurry flows through this part, it is pumped to the upper cylinder 1 by the pump set connected to the branch pipe 4. The slag-containing slurry flows into the filter element 6 after being filtered through the filter hole, and then flows to the inlet of the pump set through the branch pipe 4, thereby achieving the purpose of diversion.

[0041] The filter holes on the filter element 6 filter the slag in the slurry, preventing slag larger than the pore size from entering the filter element 6, let alone the branch pipe 4 and the pump set. The slag discharge assembly 5 is used to remove the slag remaining in the filter element 6. The telescopic component 51 has a certain stroke. By extending the telescopic component 51, the guide rod 52, positioning ring 53 and sealing component 54 connected to the telescopic component 51 move downward. A large gap appears between the sealing component 54 and the bottom of the filter element 6, allowing the slag remaining in the filter element 6 to be discharged into the slurry in the lower cylinder 2 and discharged from the tunnel with the slurry discharge system.

[0042] Example 3, based on Example 1, provides a diverter with an upper cylinder 1 arranged vertically and a lower cylinder 2 arranged horizontally. The lower end of the upper cylinder 1 is detachably connected to the middle of the lower cylinder 2. In this example, both the upper cylinder 1 and the lower cylinder 2 are straight cylindrical structures, and the upper cylinder 1 is connected to the lower cylinder 2 via a connecting flange 7. With the filter element 6 installed inside the upper cylinder 1 and the upper cylinder 1 arranged vertically, according to the slurry flow pattern, very little slag and stone flows through the upper cylinder 1, and it consists of small particles, thus solving the inherent defect of traditional filter elements 6 being prone to clogging.

[0043] Furthermore, such as Figure 6 As shown, a valve 8 is provided between the upper cylinder 1 and the lower cylinder 2. The upper and lower sides of the valve 8 are connected to the connecting flanges on the upper cylinder 1 and the lower cylinder 2, respectively. The valve can control the flow between the upper cylinder 1 and the lower cylinder 2. Specifically, when performing maintenance on the filter element 6 or the slag discharge assembly 5 in the upper cylinder 1, the valve 8 is closed. At this time, slurry can still be discharged in the lower cylinder 2, so as to achieve maintenance without shutting down the equipment.

[0044] Example 4 differs from Example 3 in that it is a diverter in which the upper cylinder 1 has a funnel-shaped structure, the lower end of which is connected to the lower cylinder 2, and the upper end of which is provided with a top plate for closing the funnel-shaped structure. The filter element 6 and the slag discharge assembly 5 are provided on the top plate. The filter element 6 also has a funnel-shaped structure, the upper end of which is connected to the top plate, and the lower end opening of which is sealed and cooperated with the slag discharge assembly 5.

[0045] Example 5 differs from Example 2 in that it is a diverter where the filter element 6 is a filter plate with filter holes. The inner wall of the upper cylinder 1 has vertically arranged grooves. During filter plate installation, the two sides of the filter plate are slidably connected to the grooves, and the upper end of the filter plate is connected to the upper cylinder 1 through the mounting plate 3. In this example, the left side of the filter plate is the discharge side, and the right side is the inlet side. The slag discharge assembly 5 is located on the left side of the filter plate. The sealing element 54 in the slag discharge assembly is a semi-circular structure that seals the gap on the lower left side of the filter plate. A branch pipe 4 is provided on the upper cylinder 1 on the left side of the filter plate. That is, the left side of the filter plate is connected to the outside of the upper cylinder 1 through the branch pipe 4, and the right side of the filter plate is connected to the lower cylinder 2.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A diverter, comprising an upper cylinder (1) and a lower cylinder (2), characterized in that, The upper cylinder (1) is connected to the lower cylinder (2). The upper cylinder (1) is equipped with a filter element (6). The slurry outlet side of the filter element (6) is connected to the slurry outlet of the upper cylinder (1), and the slurry inlet side of the filter element (6) is connected to the lower cylinder (2). The upper cylinder (1) is equipped with a slag discharge assembly (5) for controlling the connection state of the two sides of the filter element (6).

2. The shunt according to claim 1, characterized in that, The slag discharge assembly (5) is located on the slurry discharge side of the filter element (6).

3. The shunt according to claim 1 or 2, characterized in that, The filter element (6) is a cylindrical structure. The inner side of the cylindrical structure is connected to the slurry outlet of the upper cylinder (1), and the outer side of the cylindrical structure is connected to the lower cylinder (2). The side wall of the cylindrical structure is provided with filter holes. The upper end of the cylindrical structure is connected to the upper cylinder (1), and the slag discharge assembly (5) is sealed and matched with the lower end of the cylindrical structure.

4. The shunt according to claim 3, characterized in that, The upper end of the cylindrical structure is connected to an installation plate (3), which is detachably connected to the upper cylinder (1).

5. The shunt according to claim 4, characterized in that, The upper cylinder (1) is provided with a branch pipe (4), the inlet end of the branch pipe (4) is connected to the inner side of the cylindrical structure, and the outlet end of the branch pipe (4) extends out of the upper cylinder (1).

6. The shunt according to claim 4 or 5, characterized in that, The slag discharge assembly (5) includes a telescopic component (51) and a sealing component (54). The telescopic component (51) is connected to the sealing component (54) via a guide rod (52). The sealing component (54) is engaged with the lower end of the cylindrical structure for sealing.

7. The shunt according to claim 6, characterized in that, The guide rod (52) is provided with a positioning ring (53), which slides with the inner wall of the cylindrical structure.

8. The shunt according to claim 6, characterized in that, The upper side of the sealing component (54) is provided with a conical surface.

9. The shunt according to any one of claims 1, 2, 4, 5, 7, and 8, characterized in that, The upper cylinder (1) is arranged vertically, and the lower cylinder (2) is arranged horizontally. The lower end of the upper cylinder (1) is detachably connected to the middle part of the lower cylinder (2).

10. The shunt according to claim 9, characterized in that, A valve is provided between the upper cylinder (1) and the lower cylinder (2).

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