A washing water collecting device for plate and frame filter press

Abstract

The utility model relates to the technical field of plate and frame filter presses, and provides a washing water collecting device for a plate and frame filter press, comprising a tank body, on the top of which a liquid inlet is provided; a decompression structure, comprising a decompression tank, on the bottom of which a plurality of through holes are provided; a decompression layer, which is arranged in the decompression tank; a liquid outlet pipe, one end of which extends into the interior of the decompression tank, and the other end of which is connected to the plate and frame filter press; wherein the decompression tank is arranged above the liquid inlet and is connected to the liquid inlet through the through holes; the decompression layer has permeability and air permeability; when a large amount of liquid mixed with pressurized gas is discharged, a decompression structure is arranged on the liquid inlet, which can buffer the sudden influx of the liquid into the tank body, so as to reduce the impact force of the large amount of liquid discharged on the storage tank, slow down the increasing speed of the pressure inside the tank body, and prevent the washing water from splashing out of the storage tank; when the pressure inside the tank body increases, the decompression structure can be used to exhaust and release the pressure, so that the gas can be discharged in time, and the pressure inside the tank body is prevented from being too high, which affects the discharge of the washing water.

Description

Technical Field

[0001] The utility model relates to the technical field of plate-frame filter presses, in particular to a washing water collecting device for a plate-frame filter press. Background Art

[0002] In the production process of lithium salts, the acid clinker is generally passed through a plate and frame filter press for solid-liquid separation after leaching. However, since some lithium is adsorbed in the solid material obtained after separation, it usually needs to be washed. Since the washing water contains a large amount of lithium, in order to avoid the loss of lithium resources, the washing water used for washing cannot be discharged directly, and a storage tank is required to collect the washing water.

[0003] After the filter press completes the pressing and washing operations, in order to reduce the amount of lithium on the filter cake, it is usually necessary to blow the filter cake dry with compressed air. At this time, a large amount of wash water mixed with pressurized air will suddenly be discharged into the storage tank, causing the internal pressure of the storage tank to suddenly increase, impacting the storage tank, causing it to vibrate, and even causing the wash water to splash out of the storage tank, affecting the environment around the storage tank. For this reason, an exhaust pipe is designed on the storage tank to reduce the pressure inside the storage tank.

[0004] However, the existing storage tank exhaust pipe is small, and when the pressure suddenly increases, the gas cannot be discharged in time, and even the excessive pressure inside the storage tank may affect the discharge of liquid. In order to increase the exhaust volume, simply increasing the exhaust pipe to three, but still cannot solve the above problems well. Utility Model Content

[0005] The purpose of the utility model is to provide a plate and frame filter press wash water collection device to solve the problem that the existing storage tank has poor exhaust function as mentioned in the above background technology, when the pressure suddenly increases, the gas cannot be discharged in time, causing the wash water to splash out of the storage tank, and even the problem that the internal pressure of the storage tank is too high to affect the discharge of liquid.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A plate and frame filter press washing water collecting device, comprising:

[0008] The tank body has a liquid inlet on the top;

[0009] Pressure relief structures, including:

[0010] A pressure relief groove, the bottom of which is provided with a plurality of through holes;

[0011] A decompression layer is provided in the decompression groove;

[0012] A liquid outlet pipe, one end of which extends into the interior of the pressure reducing tank and the other end of which is connected to the plate and frame filter press;

[0013] Wherein, the pressure relief groove is arranged above the liquid inlet and is connected with the liquid inlet through the through hole; and the pressure relief layer has permeability and air permeability.

[0014] Preferably, the pressure relief layer is a quartz sand mixture.

[0015] Preferably, the diameter of the quartz sand in the quartz sand mixture is larger than the diameter of the through hole.

[0016] Preferably, an exhaust pipe is also provided above the tank body.

[0017] Preferably, the decompression structure is arranged on one side of the top of the trough body, and the exhaust pipe is arranged on the other side.

[0018] Preferably, the upper portion of the exhaust pipe is arc-shaped.

[0019] Preferably, there are several exhaust pipes.

[0020] Preferably, the top surface of the decompression groove is a mesh structure, and the mesh structure is a first mesh layer.

[0021] Preferably, a second mesh layer is provided below the top of the decompression groove, and the meshes on the second mesh layer and the first mesh layer are staggered with each other.

[0022] Preferably, the outlet of the liquid outlet pipe passes through the second mesh layer.

[0023] Compared with the prior art, the utility model has the following beneficial effects: when a large amount of liquid mixed with pressurized gas is discharged from the liquid outlet pipe, a decompression structure is provided on the liquid inlet of the tank body, which can buffer the influx of liquid into the storage tank, thereby reducing the impact force on the storage tank caused by the sudden discharge of a large amount of liquid, slowing down the rate of increase of the internal pressure of the tank body, and preventing the washing water from splashing out of the storage tank; at the same time, when the pressure in the tank body increases, the decompression structure can be used to exhaust and release the pressure, so that the gas can be discharged in time, preventing the internal pressure of the tank body from being too high and affecting the discharge of liquid; in addition, the decompression structure and the exhaust pipe each occupy one side of the top surface of the tank body, so that there is enough space on the tank body to install a large-diameter exhaust pipe, thereby improving the exhaust efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0026] Figure 2 A top view of an embodiment of the utility model;

[0027] Figure 3 It is a bottom schematic diagram of the decompression structure of an embodiment of the utility model.

[0028] Figure numerals: 1, tank body; 11, liquid inlet; 2, pressure relief structure; 21, pressure relief tank; 22, pressure relief layer; 3, through hole; 4, liquid outlet pipe; 5, exhaust pipe; 6, first mesh layer; 7, second mesh layer. DETAILED DESCRIPTION

[0029] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships conventionally placed when the product of the present invention is used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0034] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0035] like Figures 1 to 3 As shown, the embodiment of the utility model provides a plate-frame filter press washing water collection device, comprising:

[0036] The tank body 1 has a liquid inlet 11 formed on its top;

[0037] Decompression structure 2, comprising:

[0038] The pressure relief groove 21 has a plurality of through holes 3 at its bottom;

[0039] A pressure relief layer 22 is provided in the pressure relief groove 21;

[0040] A liquid outlet pipe 4, one end of which extends into the interior of the pressure reducing tank 21, and the other end of which is connected to the plate and frame filter press;

[0041] The pressure reducing groove 21 is disposed above the liquid inlet 11 and is connected to the liquid inlet 11 through the through hole 3 ; the pressure reducing layer 22 has permeability and air permeability.

[0042] A decompression structure 2 is provided on the liquid inlet 11 of the tank body 1. When a large amount of liquid is discharged from the liquid outlet pipe 4, the liquid flows to the decompression layer 22, and flows into the tank body 1 through the through hole 3 after being buffered in the decompression layer 22. The decompression tank 21 can temporarily store the liquid that has no time to flow into the tank body 1, thereby reducing the impact force on the storage tank caused by the sudden discharge of a large amount of liquid, and achieving the purpose of slowing down the speed of increasing pressure inside the tank body 1; in addition, when the pressure inside the tank body 1 increases, since the decompression layer 22 is air permeable, the tank body 1 can be vented and depressurized through the decompression layer 22, so that the gas in the tank body 1 can be discharged in time, preventing the internal pressure of the tank body 1 from being too high, causing the liquid to splash out of the storage tank, or affecting the discharge of washing water.

[0043] Specifically, the pressure relief layer 22 is a quartz sand mixture. Quartz sand is hard, wear-resistant, and has stable chemical properties. It can buffer the large amount of liquid discharged from the liquid outlet pipe 4 and flow into the tank body 1. In addition, the gaps between the sand and gravel can play a role in exhaust and liquid circulation.

[0044] More specifically, the diameter of the quartz sand in the quartz sand mixture is larger than the diameter of the through hole 3 , so as to prevent the quartz sand mixture from being brought into the tank body 1 when the liquid flows into the tank body 1 through the through hole 3 .

[0045] In order to increase the exhaust rate of the tank body 1 , an exhaust pipe 5 is further provided above the tank body 1 .

[0046] Since a small diameter of the exhaust pipe 5 will result in poor exhaust effect, the decompression structure 2 is arranged on one side of the top of the tank body 1, and the exhaust pipe 5 is arranged on the other side to ensure that there is enough space to install the large diameter exhaust pipe 5.

[0047] Specifically, the upper portion of the exhaust pipe 5 is arc-shaped, which can effectively prevent liquid from splashing out of the exhaust pipe 5 .

[0048] In order to further improve the exhaust rate of the tank body 1, a plurality of exhaust pipes 5 are provided.

[0049] It should be noted that the pipe openings of the exhaust pipes 5 are not aligned with the direction of the pressure reducing device 2 to avoid affecting the discharge of gas.

[0050] Furthermore, the top surface of the decompression groove 21 is a mesh structure, and the mesh structure is the first mesh layer 6 , which ensures the exhaust function of the decompression groove 2 while preventing liquid from splashing out of the decompression groove 21 to a certain extent.

[0051] In order to ensure that the liquid does not splash out of the decompression groove 21 , a second mesh layer 7 is provided below the top of the decompression groove 21 , and the meshes on the second mesh layer 7 and the first mesh layer 6 are staggered with each other.

[0052] Specifically, the outlet of the liquid outlet pipe 4 passes through the second mesh layer 7 .

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A plate and frame filter press wash water collection device, characterized in that: include: A tank body (1) having a liquid inlet (11) formed on its upper portion; Pressure relief structure (2), comprising: A pressure relief groove (21) having a plurality of through holes (3) at its bottom; A pressure relief layer (22) is disposed in the pressure relief groove (21); A liquid outlet pipe (4), one end of which extends into the interior of the pressure reducing tank (21), and the other end of which is connected to the plate and frame filter press; The pressure reducing groove (21) is arranged above the liquid inlet (11) and is connected to the liquid inlet (11) via the through hole (3); and the pressure reducing layer (22) has permeability and air permeability.

2. The plate and frame filter press washing water collecting device according to claim 1, characterized in that: The pressure relief layer (22) is a quartz sand mixture.

3. The plate and frame filter press washing water collecting device according to claim 2, characterized in that: The diameter of the quartz sand in the quartz sand mixture is greater than the diameter of the through hole (3).

4. The plate and frame filter press washing water collecting device according to claim 1, characterized in that: An exhaust pipe (5) is also provided above the tank body (1).

5. The plate and frame filter press washing water collecting device according to claim 4, characterized in that: The decompression structure (2) is arranged on one side of the top of the tank body (1), and the exhaust pipe (5) is arranged on the other side.

6. The plate and frame filter press washing water collecting device according to claim 5, characterized in that: The top of the exhaust pipe (5) is arc-shaped.

7. The plate and frame filter press washing water collecting device according to claim 5, characterized in that: A plurality of exhaust pipes (5) are provided.

8. The plate and frame filter press wash water collection device according to claim 1, characterized in that: The top surface of the pressure relief groove (21) is a mesh structure, and the mesh structure is a first mesh layer (6).

9. The plate and frame filter press washing water collecting device according to claim 8, characterized in that: A second mesh layer (7) is also provided below the top of the decompression groove (21), and the meshes on the second mesh layer (7) and the first mesh layer (6) are staggered with each other.

10. The plate and frame filter press wash water collection device according to claim 9, characterized in that: The pipe opening of the liquid outlet pipe (4) passes through the second mesh layer (7).

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