Precise pre-coating filtering system with slag press locking and sealing structure

Abstract

The utility model relates to the technical field of solid-liquid separation equipment, in particular to a precise pre-coating filtering system with a slag pressing device locking and sealing structure, which comprises an equipment rack, and a fiber powder adding pre-coating device, a pre-coating filter and a slag liquid discharging and recycling device which are sequentially communicated are arranged in the equipment rack; a slag pressing device communicated with the slag liquid discharging and recycling device is mounted on the outer side of the equipment rack, and a slag storage trolley is placed below the slag pressing device; the slag pressing device comprises a main machine body with an opening end, a gland covering the opening end, a hydraulic main rod used for rotating the gland and a hydraulic auxiliary rod with the end connected with a locking gripper to lock the gland. The hydraulic locking mechanism is additionally arranged, so that the locking reliability is improved, the problems of untight sealing and the like are reduced, and the required maintenance frequency is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of solid-liquid separation equipment, and in particular to a precision pre-coating filtration system with a slag press locking and sealing structure. Background Art

[0002] The precision pre-coat filtration system is a highly efficient solid-liquid separation device widely used in the chemical, food, and pharmaceutical industries. It consists of a pre-coat filter, a fiber powder pre-coat device, a slag liquid discharge and recovery device, and an electrical control system. After the liquid is filtered, the filter residue is trapped in the pre-coat layer. Accumulated filter residue is then fed to a slag press under a pre-set program. When the filter residue reaches a certain thickness, the slag discharge process is automatically initiated. After the slag press is pressed, the solid residue is discharged into a slag storage cart located below the slag press for subsequent processing.

[0003] Existing slag presses typically use rotary mechanical seals for sealing. These seals consist of one or more pairs of contacting rotating and stationary rings, relying on a liquid film or lubricating layer to maintain the seal. However, mechanical seals require high machining precision. Even the slightest manufacturing error or improper installation can cause the sealing surfaces to not fit tightly, leading to leakage. Furthermore, during operation, the rotary mechanical seal is subject to high loads, causing the sealing surfaces to wear easily, leading to liquid leakage from the sealing points and affecting the press's efficiency. If the liquid film is insufficient, the sealing surfaces will dry-grind, further exacerbating wear and leakage. Utility Model Content

[0004] In order to ensure the reliability of the slag press seal and reduce the cost of long-term maintenance, the present application provides a precision pre-coat filtration system with a slag press locking and sealing structure.

[0005] The precision pre-coating filtration system with a slag press locking and sealing structure provided in this application adopts the following technical solutions:

[0006] The precision pre-coating filtering system with a slag press locking and sealing structure includes an equipment frame, wherein a fiber powder adding pre-coating device, a pre-coating filter and a slag liquid discharge and recovery device which are connected in sequence are installed inside the equipment frame, a slag press which is connected to the slag liquid discharge and recovery device is installed on the outside of the equipment frame, and a slag storage vehicle is placed under the slag press; a mounting frame is connected between the slag press and the equipment frame, the slag press includes a main body with an open end formed at the lower end and a pressure cover covering the open end, the slag press also includes a hydraulic main rod and a hydraulic auxiliary rod arranged around the main body, the main body is connected to the mounting frame, the lower end of the hydraulic main rod is rotatably connected to one side of the pressure cover, the lower end of the hydraulic auxiliary rod is rotatably connected to a locking gripper for locking the pressure cover, and the upper end of the locking gripper is rotatably connected to the upper end of the outer edge of the open end.

[0007] By adopting the above technical solution, the whole machine is miniaturized and innovative, the operation is highly automated, and the overall system is highly integrated, which helps to improve production efficiency and reduce maintenance costs. At the same time, the addition of an additional locking mechanism and the use of hydraulic locking ensure that the pressure cover can accurately and firmly cover the main body, reducing problems such as poor sealing and leakage.

[0008] Optionally, a plurality of hydraulic auxiliary rods are provided, and the hydraulic main rod and the hydraulic auxiliary rods are spaced apart and arranged around the main body.

[0009] By adopting the above technical solution, multiple hydraulic auxiliary rods are evenly distributed on the outside of the main body, ensuring that each point is evenly stressed when the pressure cover is closed, avoiding damage to the sealing surface due to excessive force at a single point, thereby further improving the sealing reliability.

[0010] Optionally, the upper end of the hydraulic main rod is rotatably connected to the mounting bracket, and the upper end of the hydraulic sub-rod is rotatably connected to the outer side of the main body.

[0011] Optionally, a recessed opening is provided on the outer side of the main body for rotationally connecting the upper end of the hydraulic auxiliary rod, and the recessed opening corresponds to the hydraulic auxiliary rod in a one-to-one manner.

[0012] By adopting the above technical solution, the design of the clearance port provides sufficient space for the hydraulic auxiliary rod, making the installation of the hydraulic auxiliary rod more reasonable and compact, avoiding unnecessary external interference; at the same time, this design also reduces wear caused by friction or collision, which helps to extend the service life of the equipment.

[0013] Optionally, the outer cover of the slag press is provided with a protective shell.

[0014] By adopting the above technical solution, the setting of the protective shell provides external protection for the slag press, reduces the impact of the external environment on the equipment during operation, improves the durability and working stability of the equipment, and also reduces the maintenance frequency.

[0015] Optionally, there are multiple pre-coat filters.

[0016] By adopting the above technical solution, the multiple pre-coat filters have improved the flexibility and working efficiency of the system. Under different working conditions, the number of pre-coat filters in operation can be flexibly adjusted as needed, thereby ensuring the continuous and efficient operation of the system, reducing downtime, and ensuring the stability of the production process.

[0017] To sum up, the beneficial effects of this application are as follows: integrated fiber powder pre-coating device, pre-coating filter and slag liquid discharge and recovery device, automated control to ensure efficient and stable solid-liquid separation and residue treatment, the spare configuration of multiple pre-coating filters improves system flexibility, reduces downtime and maintenance costs, and extends equipment life; on this basis, this application improves the sealing and durability of the slag press through an innovative hydraulic locking sealing structure, avoiding the wear and leakage problems of traditional mechanical seals. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a precision pre-coat filtration system with a slag press locking and sealing structure.

[0019] Figure 2 It is a structural diagram of a slag press with a three-way valve installed on the upper end.

[0020] Explanation of the accompanying symbols: 1. Fiber powder adding pre-coating device; 2. Pre-coating filter; 3. Slag liquid discharge and recovery device; 4. Equipment frame; 5. Slag press; 51. Main body; 511. Open end; 512. Yield port; 513. First connecting seat; 514. Second connecting seat; 52. Pressure cover; 521. Rotating block; 522. Interface; 53. Hydraulic main rod; 54. Hydraulic auxiliary rod; 541. Locking gripper; 6. Slag storage vehicle; 7. Mounting frame; 8. Protective shell. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 、 2 This application is described in further detail.

[0022] In this paper, a coordinate system XYZ is set, where the positive direction of the Z axis represents the top, the negative direction of the Z axis represents the bottom, the positive direction of the Y axis represents the front, the negative direction of the Y axis represents the back, the positive direction of the X axis represents the right, and the negative direction of the X axis represents the left.

[0023] The embodiment of the present application discloses a precision pre-coating filtration system with a slag press locking and sealing structure. Figure 1 The precision pre-coating filtration system with a slag press locking seal structure includes a fiber-powder pre-coating device 1, a pre-coating filter 2, a slag liquid discharge and recovery device 3, an equipment frame 4, a slag press 5, and a slag storage vehicle 6. The fiber-powder pre-coating device 1, the pre-coating filter 2, and the slag liquid discharge and recovery device 3 are all installed inside the equipment frame 4. In this system, three pre-coating filters 2 are shown as an example. Two of the pre-coating filters 2 are in operation, and the remaining pre-coating filter 2 is used as a backup.

[0024] The slag press 5 is mounted on the outer wall on the left side of the equipment frame 4, and the slag storage car 6 is placed below the slag press 5. A mounting bracket 7 is connected to the right side of the slag press 5, and the slag press 5 is mounted on the outer side of the equipment frame 4 through the mounting bracket 7. A protective shell 8 is installed on the outer side of the slag press 5.

[0025] In general, the slag press 5, the fiber powder adding pre-coating device 1, and the three pre-coating filters 2 are placed one by one from left to right, and the slag liquid discharge recovery device 3 is placed in front of the pre-coating filter 2. All equipment is connected to each other through pipelines as needed.

[0026] During operation, the fiber and powder pre-coating device 1 is started, and the fiber or powder filter aid is transported to the pre-coating filter 2 through a pipeline, forming a pre-coating layer on the filter element in the pre-coating filter 2. After the pre-coating is completed, the liquid to be filtered enters the pre-coating filter 2 through the pipeline, and the pre-coating filter 2 starts to work. When the liquid passes through the pre-coating layer and the filter element, the solid particles are trapped on the pre-coating layer, and the filtrate flows out of the filter element. As the filtration process proceeds, the solid particles gradually accumulate on the pre-coating layer outside the filter element to form a filter cake. When the system pressure reaches the set value, the electrical control system issues a command to stop filtering and start cleaning the filter cake. How to detect the system pressure and how this operation cooperates with the electrical control system are both existing technologies and will not be described in detail.

[0027] During the filter cake cleaning process, the slag-liquid discharge and recovery device 3 is activated to separate the peeled filter cake from the liquid. The specific operation is consistent with existing technology. The recovered liquid is returned to the system for recycling, while the solid filter residue is transported via a pipeline to the slag crusher 5, where it is compressed and discharged into the slag storage vehicle 6 for subsequent centralized processing or transportation. After processing is completed, backwashing can be performed as required.

[0028] The entire system is managed by an electrical control system. It automatically controls pre-coating, filtration, slag removal, backwashing, and other operations based on set parameters. The specific principles and methods are based on existing technologies. Pneumatic valves and sensors are used to control fluid flow and monitor key data such as system pressure and temperature, ensuring efficient and safe operation of the entire system.

[0029] Reference Figure 2 The slag press 5 comprises a main body 51 with an open end 511 at its lower end, a pressure cover 52 that covers the open end 511 from below, a hydraulic main rod 53 that controls the rotation of the pressure cover 52, and multiple hydraulic auxiliary rods 54 that lock the pressure cover 52. The main body 51 has the same structure and operating principle as existing slag presses. The lower end of the pressure cover 52 is connected to a port 522 for installing a pipeline. During backflush, gas flows out of the port 522 through the pipeline to backflush the interior of the main body 51.

[0030] The upper end of the hydraulic main rod 53 is mounted below the top plate of the mounting bracket 7. Three hydraulic auxiliary rods 54 are shown as an example, all mounted on the outer wall of the main body 51. The outer wall of the main body 51 is recessed with a recessed opening 512 for the upper bolts of the hydraulic auxiliary rods 54 to secure. These recesses 512 are elongated and correspond one to each hydraulic auxiliary rod 54. The hydraulic main rod 53 and the three hydraulic auxiliary rods 54 are spaced apart around the main body 51 to achieve optimal sealing.

[0031] One end of the gland 52 is fixedly connected to a rotating block 521. A first connecting seat 513 is mounted on one side of the lower end of the main body 51. The side of the rotating block 521 closest to the first connecting seat 513 is rotatably mounted thereto. The side of the rotating block 521 closest to the hydraulic main rod 53 is mounted to the lower end of the hydraulic main rod 53. When the hydraulic main rod 53 contracts, the gland 52 tilts downward, up to a point where it is perpendicular to the open end 511. When the hydraulic main rod 53 extends, it drives the rotating block 521 to rotate counterclockwise, thereby driving the gland 52 to rotate counterclockwise and close the open end 511.

[0032] Similarly, a locking grip 541 is rotatably mounted on the lower end of the hydraulic auxiliary rod 54. Multiple pairs of second connecting blocks 514 are mounted above the outer edge of the open end 511, with the upper end of each locking grip 541 corresponding to a pair of second connecting blocks 514. When the pressure cover 52 covers the open end 511, the locking grips 541 lock it.

[0033] The precise pre-coating filtration system with a slag press locking and sealing structure according to the embodiment of the present application operates as follows: a fiber-powder pre-coating device 1 provides a filter aid to the pre-coating filter 2, forming a pre-coating layer on the filter element surface for precise filtration of liquid. The clean liquid after filtration is output, and the filter residue is separated into solid and liquid by a slag-liquid discharge and recovery device 3, recovering the usable liquid. Subsequently, the filter residue is transported to a slag press 5 for compression processing, which discharges the residual liquid, and finally the compressed solid residue is discharged into a slag storage vehicle 6.

[0034] Before the compression process, the hydraulic auxiliary rod 54 on the slag press 5 retracts, driving the locking grip 541 upward to make room for the pressing cover 52 to close. The hydraulic main rod 53 extends outward, driving the pressing cover 52 to close the opening at the lower end of the main body 51 and tighten it. Subsequently, the hydraulic auxiliary rod 54 extends outward, causing the locking grip 541 to flip downward and lock the pressing cover 52. The compression process can then proceed.

[0035] When the system is finished working, the locking can be canceled by following the reverse operation, the pressure cover 52 can be opened, and the compressed solid slag can be discharged into the slag storage car 6.

[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. Precision pre-coating filtration system with slag press locking and sealing structure, characterized by: The invention comprises an equipment frame (4), wherein a fiber powder adding pre-coating device (1), a pre-coating filter (2) and a slag liquid discharge and recovery device (3) which are connected in sequence are installed inside the equipment frame (4), a slag press (5) which is connected to the slag liquid discharge and recovery device (3) is installed outside the equipment frame (4), and a slag storage vehicle (6) is placed below the slag press (5); a mounting frame (7) is connected between the slag press (5) and the equipment frame (4), and the slag press (5) comprises a main body (51) with an open end (511) formed at the lower end, a cover (511) and a slag storage vehicle (6) which are placed below the slag press (5); a mounting frame (7) is connected between the slag press (5) and the equipment frame (4), and the slag press (5) comprises a main body (51) with an open end (511) formed at the lower end, a cover (511) and a slag storage vehicle (6) which are placed below the slag press (5). The slag press (5) further comprises a hydraulic main rod (53) and a hydraulic auxiliary rod (54) arranged around the main body (51), the main body (51) is connected to the mounting frame (7), the lower end of the hydraulic main rod (53) is rotatably connected to one side of the pressure cover (52), the lower end of the hydraulic auxiliary rod (54) is rotatably connected to a locking gripper (541) for locking the pressure cover (52), and the upper end of the locking gripper (541) is rotatably connected to the upper end of the outer edge of the opening end (511).

2. The precision pre-coat filtration system with a slag press locking and sealing structure according to claim 1 is characterized in that: A plurality of hydraulic auxiliary rods (54) are provided, and the hydraulic main rod (53) and the hydraulic auxiliary rods (54) are spaced apart and arranged around the main body (51).

3. The precision pre-coat filtration system with a slag press locking and sealing structure according to claim 1 is characterized in that: The upper end of the hydraulic main rod (53) is connected to the mounting frame (7), and the upper end of the hydraulic auxiliary rod (54) is installed on the outside of the main body (51).

4. The precision pre-coat filtration system with a slag press locking and sealing structure according to claim 3 is characterized in that: The outer side of the main body (51) is recessed with a clearance opening (512) for connecting the upper end of the hydraulic auxiliary rod (54), and the clearance opening (512) corresponds to the hydraulic auxiliary rod (54) one by one.

5. The precision pre-coat filtration system with a slag press locking and sealing structure according to any one of claims 1 to 4, characterized in that: The outer side of the slag press (5) is covered with a protective shell (8).

6. The precision pre-coat filtration system with a slag press locking and sealing structure according to claim 5 is characterized in that: The pre-coat filters (2) are provided in plurality.

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