Pressure reduction shockproof device for mud return pipe of plate-and-frame filter press

Abstract

The utility model discloses a pressure reduction shockproof device for a mud return pipe of a plate-and-frame filter press, which comprises a pipeline detachably connected with the tail end of a mud return pipeline, one end of the pipeline far away from the mud return pipeline is arranged in a storage tank, a plurality of through holes are arranged on the wall of the pipeline extending into the storage tank, and the through holes are communicated with the mud return pipeline. The multiple through holes are evenly formed in the circumferential direction of the pipeline. The mud return device has the advantages that the pipeline with the through holes is arranged in the storage tank, pressure originally acting on the pipeline can be effectively released, impact on the storage tank is relieved, the through holes are evenly formed in the circumferential direction of the pipeline, pressure generated by mud return fluid can be evenly diffused to the periphery and the space in the storage tank, and the mud return effect is improved. The situation that the mud return fluid forms a single-direction strong impact force in the pipeline to directly act on the storage tank is avoided, the impact force on the storage tank is further reduced, and the shockproof effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment protection technology in the environmental protection industry, and more specifically, to a pressure reduction and shock absorption device for the mud return pipe of a plate and frame filter press. Background Technology

[0002] In filter press operation, the backflushing sludge return system uses compressed air to backflush the filter slurry remaining in the feed pipe of the filter press through the sludge return pipe to the storage tank after the secondary pressing and before the filter cake falls off the filter plate. This prevents untreated sludge from dripping during the filter cake detachment process. During operation, because the instantaneous air pressure of the backflushing sludge return is relatively high and the process is short, usually completed within a few seconds, the sludge blown back into the storage tank by the compressed air causes vibration, shaking, and noise in the tank. Prolonged operation of this system is extremely detrimental to the tank and poses a safety hazard. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a pressure-reducing and shock-absorbing device for the mud return pipe of a plate and frame filter press.

[0004] This utility model provides a pressure-reducing and shock-absorbing device for the return mud pipe of a plate and frame filter press, comprising: a pipe detachably connected to the end of the return mud pipe, wherein...

[0005] The end of the pipe away from the return sludge pipe is located inside the storage tank, and the pipe wall extending into the storage tank is provided with multiple through holes, which are evenly arranged along the circumference of the pipe.

[0006] As a further improvement of this utility model, the plurality of through holes are arranged along the axial direction of the pipe.

[0007] As a further improvement of this utility model, the plurality of through holes are spirally arranged along the pipe wall.

[0008] As a further improvement of this utility model, the plurality of through holes are arranged in a straight line along the pipe wall and are arranged in multiple layers, with each through hole in each layer being evenly arranged along the circumference of the pipe.

[0009] As a further improvement of this utility model, up to 10 through holes are provided evenly distributed along the circumference of the pipe.

[0010] As a further improvement of this utility model, the multiple through holes are spaced apart from each other in the axial direction, with a spacing of L, where L≥10T, and T is the wall thickness of the pipe.

[0011] As a further improvement of this utility model, the diameter of the through hole is D, where 8mm≤D≤50mm.

[0012] As a further improvement of this utility model, the distance between the end of the pipeline away from the return sludge pipeline and the highest liquid level inside the storage tank is not less than 150mm.

[0013] As a further improvement of this utility model, the connection between the storage tank and the pipeline is sealed.

[0014] As a further improvement of this utility model, the diameter of the pipe is greater than or equal to the diameter of the sludge return pipe.

[0015] The beneficial effects of this utility model are as follows: by setting a pipe with through holes inside the storage tank, the pressure originally acting on the pipe can be effectively released, reducing the impact on the storage tank and reducing the noise of compressed air release. Moreover, the multiple through holes are evenly arranged along the circumference of the pipe, which can make the pressure generated by the sludge return fluid diffuse evenly to the surrounding area and the space inside the storage tank, avoiding the strong impact force of the sludge return fluid in the pipe acting directly on the storage tank, further reducing the impact force on the storage tank, achieving the effect of shock resistance, ensuring the stability and safety of the storage tank during the sludge return process, and extending the service life of the storage tank. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the backflushing and sludge return system of a plate and frame filter press;

[0018] Figure 2 for Figure 1 Enlarged schematic diagram of the pressure reduction and vibration damping device in the backflushing and sludge return system of a plate and frame filter press;

[0019] Figure 3 This is a schematic diagram of the pressure reduction and shock absorption device for the mud return pipe of a plate and frame filter press according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the cross-section of the pipe in the pressure-reducing and shock-absorbing device for the return mud pipe of a plate and frame filter press according to an embodiment of the present invention.

[0021] In the picture,

[0022] 1. Pressure reducing and shock absorption device; 11. Pipeline; 12. Through hole; 13. Flange; 2. Sludge return pipeline; 3. Storage tank; 31. Storage tank inlet; 4. Filter press. Detailed Implementation

[0023] 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.

[0024] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, the terminology used in the description of this utility model is for illustrative purposes only and is not intended to limit the scope of this utility model. The terms "comprising" and / or "including" are used to specify the presence of the said elements, steps, operations, and / or components, but do not exclude the presence or addition of one or more other elements, steps, operations, and / or components. The terms "first," "second," etc., may be used to describe various elements, do not represent an order, and do not limit these elements. In addition, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more. These terms are used only to distinguish one element from another. These and / or other aspects become apparent in conjunction with the following drawings, and those skilled in the art will more readily understand the description of the embodiments of this utility model. The drawings are used for illustrative purposes only to depict the embodiments of this utility model. Those skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods shown in this utility model can be employed without departing from the principles of this utility model.

[0026] Example 1, as Figure 1 , Figure 2 and Figure 4 As shown in the embodiment of this utility model, a pressure-reducing and shock-absorbing device for the return mud pipe of a plate and frame filter press includes: a pipe 11 detachably connected to the end of the return mud pipe 2, wherein...

[0027] The end of the pipe 11 away from the return mud pipe 2 is located inside the storage tank 3, and the pipe wall extending into the storage tank 3 is provided with a plurality of through holes 12, which are evenly arranged along the circumference of the pipe 11.

[0028] like Figure 1As shown, when the filter press 4 backflushes, the sludge return fluid, driven by compressed air, flows through the backflushing sludge return pipeline 2, then through the pressure reducing and shock-absorbing device 1, and finally into the storage tank 3 through the end of its pipeline 11 and through the through hole 12. When the sludge return fluid flows into the storage tank 3 through the through hole 12, it effectively releases the pressure originally acting on the pipeline 11, reducing the impact on the storage tank 3 and lowering the noise from the compressed air release. Furthermore, the multiple through holes 12, evenly distributed around the circumference of the pipeline 11, allow the pressure generated by the sludge return fluid to diffuse evenly to the surrounding area and the space inside the storage tank 3, preventing the sludge return fluid from forming a strong, one-way impact force that directly acts on the storage tank 3. This further reduces the impact force on the storage tank 3, achieving a shock-absorbing effect, ensuring the stability and safety of the storage tank 3 during the sludge return process, and extending the service life of the storage tank 3.

[0029] Furthermore, the pipe 11 is made of metal. This makes the pipe 11 heavier, less prone to displacement or swaying, and better able to resist the reaction force generated by the impact of the sludge fluid, thereby reducing the vibration transmitted to the storage tank 3 due to the swaying of the pipe 11. Moreover, compared to some lightweight materials, metal pipes can better adapt to complex and changing working environments, providing a reliable guarantee for the long-term stable operation of the system.

[0030] Preferably, the circumferential spacing of the multiple through holes 12 should be greater than the minimum set threshold to avoid the pipe wall being unable to withstand the pressure of the return mud fluid due to the short distance, which would eventually lead to breakage.

[0031] Preferably, the pipe 11 is detachably connected to the end of the return mud pipe 2 via the flange 13, which facilitates the disassembly and assembly of the pressure reducing and shock-absorbing device 1 for inspection, maintenance and cleaning.

[0032] In one embodiment, up to 10 through holes 12 are evenly distributed along the circumference of the pipe 11. This avoids the problem of the pipe 11 breaking due to an excessive number of through holes 12, which would weaken the structural strength of the pipe.

[0033] In one embodiment, the diameter of the through hole 12 is D, where 8mm ≤ D ≤ 50mm. The diameter of the through hole can be specifically set according to the circumference of the pipe, the length of the pipe extending into the storage tank, and the number of through holes; this application does not impose specific limitations on this.

[0034] In one embodiment, the distance between the end of the pipe 11 furthest from the return sludge pipe 2 and the highest liquid level inside the storage tank 3 is no less than 150mm. This not only ensures sufficient space for the return sludge fluid to diffuse and release pressure after spraying out from the end of the pipe 11, but also effectively buffers and disperses the velocity and impact force of the return sludge fluid within this relatively large space, thereby reducing the impact force on the overall storage tank 3 and contributing to better pressure reduction and shock absorption. Simultaneously, it prevents the return sludge fluid from directly impacting the liquid level surface due to excessive distance, causing violent fluctuations in the liquid level, resulting in some return sludge flowing back into the pipe 11, and the impact force of the liquid level fluctuation acting back on the pipe 11 and the storage tank 3.

[0035] In one embodiment, the connection between the storage tank 3 and the pipeline 11 is sealed. This better withstands external forces such as vibration and impact, prevents the connection from loosening or falling off, and improves structural stability. Simultaneously, sealing the connection between the storage tank 3 and the pipeline 11 also helps maintain pressure stability within both the storage tank 3 and the pipeline 11.

[0036] Preferred, such as Figure 2 As shown, the top of the storage tank 3 is provided with a storage tank pipe opening 31, and the pipe 11 extends into the interior of the storage tank 3 through the storage tank pipe opening 31.

[0037] In one embodiment, the end of the pipe 11 away from the return sludge pipe 2 is closed. In this case, the return sludge fluid in the pipe 11 is discharged only from the through hole 12. This not only effectively controls the direction of pressure release, but also avoids irregular spraying and fluctuations of the return sludge fluid when it flows out of the end of the pipe 11, thereby reducing the local impact on the storage tank 3. In addition, it also avoids the problem of some return sludge flowing back into the pipe 11 when the return sludge fluid sprays out from the end of the pipe 11 and directly impacts the liquid level surface.

[0038] In one embodiment, the diameter of the pipe 11 is greater than or equal to the diameter of the return sludge pipe 2. This reduces the flow velocity of the return sludge fluid as it enters the larger-diameter pipe through the return sludge pipe 2, thereby reducing the fluid's kinetic energy and effectively buffering pressure. Furthermore, the larger diameter of the pipe 11 also reduces turbulent flow and localized pressure concentration caused by the confined space, allowing the return sludge fluid to flow smoothly within the pipe 11, further dispersing pressure evenly, reducing vibration of the pipe 11 due to uneven pressure, and thus improving vibration resistance.

[0039] Example 2, as Figure 3 As shown, multiple through holes 12 are arranged along the axial direction of the pipe 11. This method not only allows for the gradual and regular release of pressure, but also helps the return sludge fluid maintain a relatively stable flow state within the pipe 11, reducing fluid turbulence caused by uneven distribution or improper arrangement of the through holes 12.

[0040] Preferably, there are at most 10 through holes 12 arranged along the axial direction of the pipe 11. This can avoid the problem of too many through holes 12 arranged along the axial direction of the pipe 11, which would result in the pipe wall distance between adjacent through holes 12 being too short and unable to withstand the pressure of the sludge fluid, thus causing breakage. It can also prevent the length of the pipe 11 from being increased to ensure the pipe wall distance between adjacent through holes 12, which would lead to the pipe 11 being too long and causing instability.

[0041] In one embodiment, a plurality of through holes 12 are spirally arranged along the pipe wall of the pipe 11. This method can effectively disperse the pressure of the sludge return fluid in space, avoiding excessive pressure concentration at a certain point or in a certain area. Moreover, the spiral through holes 12 can better adapt to the flow characteristics of the sludge return fluid, making the flow of the sludge return fluid in the pipe 11 more stable. For example, a total of 8 through holes 12 are provided on the pipe, and these 8 through holes 12 are spirally arranged along the pipe wall.

[0042] In one embodiment, a plurality of through holes 12 are arranged linearly along the pipe wall of the pipe 11 and are arranged in multiple layers, with each through hole 12 in each layer being uniformly arranged circumferentially along the pipe 11. This ensures uniform pressure release while guaranteeing uniform stress on the pipe wall circumferentially at the location of the through hole 12.

[0043] Furthermore, at most 10 through holes 12 are evenly distributed along the circumference of the pipe 11. This is to avoid weakening the pipe structure's strength due to an excessive number of through holes 12, which could lead to a decrease in the pipe 11's load-bearing capacity and ultimately, pipe 11 rupture. For example, if a total of 16 through holes 12 are provided on the pipe, they can be arranged in 4 layers along the pipe wall, with 4 through holes 12 evenly distributed in each layer; or in 8 layers along the pipe wall, with 2 through holes 12 evenly distributed in each layer; or in 2 layers along the pipe wall, with 8 through holes 12 evenly distributed in each layer. The key is to ensure that the number of through holes 12 arranged along the circumference and / or axial direction of the pipe 11 does not exceed 10.

[0044] It is understandable that the specific details of how to set through holes along the pipe axis, the number of through holes, the number of through hole layers when setting through holes in a straight line, and the number of through holes evenly set in each layer can be set according to the actual situation, and this application does not make specific limitations.

[0045] In one embodiment, the plurality of through holes 12 are spaced apart from each other in the axial direction by a distance L, where L ≥ 10T, and T is the wall thickness of the pipe 11. This ensures that the pipe walls of adjacent through holes 12 maintain an appropriate distance, preventing the pipe walls from being unable to withstand the pressure of the returning mud fluid due to insufficient distance, which could ultimately lead to breakage.

[0046] It is understood that the contents of Example 2 regarding the diameter of the through hole, the distance between the end of the pipe 11 and the highest liquid level inside the storage tank 3, the connection method between the pipe 11 and the storage tank 3, and the diameter of the pipe 11 are the same as those in Example 1, and will not be repeated here.

[0047] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0048] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0049] Those skilled in the art will understand that although the present invention has been described with reference to exemplary embodiments, various changes may be made and its elements may be replaced with equivalents without departing from the scope of the present invention. Furthermore, many modifications may be made to adapt particular situations or materials to the teachings of the present invention without departing from the essential scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed, but rather will include all embodiments falling within the scope of the appended claims.

Claims

1. A pressure-reducing and shock-absorbing device for the return mud pipe of a plate and frame filter press, characterized in that, include: The pipe is detachably connected to the end of the sludge return pipe, wherein... The end of the pipe away from the return sludge pipe is located inside the storage tank, and the pipe wall extending into the storage tank is provided with multiple through holes, which are evenly arranged along the circumference of the pipe.

2. The pressure-reducing and shock-absorbing device as described in claim 1, characterized in that, The plurality of through holes are arranged along the axial direction of the pipe.

3. The pressure-reducing and shock-absorbing device as described in claim 2, characterized in that, The plurality of through holes are spirally arranged along the pipe wall.

4. The pressure-reducing and shock-absorbing device as described in claim 2, characterized in that, Multiple through holes are arranged in a straight line along the pipe wall and are arranged in multiple layers, with each through hole in each layer being evenly arranged along the circumference of the pipe.

5. The pressure-reducing and shock-absorbing device as described in claim 1 or 4, characterized in that, The number of through holes evenly distributed along the circumference of the pipe is up to 10.

6. The pressure-reducing and shock-absorbing device as described in claim 3 or 4, characterized in that, The multiple through holes are spaced apart from each other in the axial direction, with a spacing of L, where L≥10T, and T is the wall thickness of the pipe.

7. The pressure-reducing and shock-absorbing device as described in claim 1 or 2, characterized in that, The diameter of the through hole is D, where 8mm ≤ D ≤ 50mm.

8. The pressure-reducing and shock-absorbing device as described in claim 1 or 2, characterized in that, The distance between the end of the pipeline furthest from the return sludge pipeline and the highest liquid level inside the storage tank shall not be less than 150 mm.

9. The pressure-reducing and shock-absorbing device as described in claim 1 or 2, characterized in that, The connection between the storage tank and the pipeline is sealed.

10. The pressure-reducing and shock-absorbing device as described in claim 1 or 2, characterized in that, The diameter of the pipe is greater than or equal to the diameter of the sludge return pipe.

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