Inverted filling system of solvent filter

Abstract

The utility model relates to filling of a chemical solvent filter, in particular to a reverse filling system of a solvent filter, which comprises the solvent filter, an inlet pipeline and an outlet pipeline are respectively arranged at the inlet end and the outlet end of the solvent filter, and an inlet valve group and an outlet valve group are respectively arranged on the inlet pipeline and the outlet pipeline. A solvent bypass pipeline is arranged between the starting end position of the inlet pipeline and the tail end position of the outlet pipeline, and a bypass valve is arranged on the solvent bypass pipeline; the system can effectively control the reverse filling flow, and the situation that due to the fact that the opening degree of the valve is too large, system flow fluctuation is caused, and normal production is affected is prevented; operation difficulty and operation risks are reduced, and stable operation of the system is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the filling of a chemical solvent filter, in particular to a solvent filter backfilling system, belonging to the field of chemical equipment. Background Art

[0002] The filter is filled in reverse during use to prevent positive filling from flattening and deforming the filter element and causing loss of filtering effect.

[0003] In the prior art, the filter is filled by slightly opening the filter outlet valve for reverse filling. Since the filter outlet valve size is DN300, the reverse filling flow rate is required to be 3-5t / h. When the valve is opened, it is easy to cause excessive opening, causing flow fluctuations and affecting normal production. Utility Model Content

[0004] In order to solve the problem that the normal production flow is greatly affected during the backfilling process of the above-mentioned filter, the purpose of the utility model is to provide a solvent filter backfilling system.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a solvent filter backfilling system, comprising: a solvent filter, an inlet pipeline and an outlet pipeline are respectively arranged at the inlet end and the outlet end of the solvent filter, an inlet valve group and an outlet valve group are respectively arranged on the inlet pipeline and the outlet pipeline, a solvent bypass pipeline is arranged between the starting end position of the inlet pipeline and the end position of the outlet pipeline, and a bypass valve is arranged on the solvent bypass pipeline;

[0006] Furthermore, the solvent bypass pipeline between the inlet pipeline and the outlet pipeline is used as a bypass when the solvent filter is removed, cleaned and isolated; after the solvent filter is isolated, the solvent comes from the heat exchanger E402, enters the inlet pipeline, passes through the solvent bypass pipeline to the outlet pipeline, and goes out from the outlet pipeline to the reaction tower C401;

[0007] Furthermore, the inlet valve group and the outlet valve group respectively include two parallel gate valves, and the size of each gate valve is DN300;

[0008] Furthermore, a guide valve is provided between the two gate valves of the inlet valve group and between the two gate valves of the outlet valve group through the bottom pipeline;

[0009] The size of the shower valve is DN25;

[0010] Furthermore, pressure gauges and control valves thereof are provided on the inlet pipeline near the inlet end of the solvent filter and on the outlet pipeline near the outlet end of the solvent filter, respectively, for monitoring the inlet and outlet pressures of the solvent filter.

[0011] Furthermore, in order to prevent the large-sized gate valve of the outlet valve group from opening too much when opening the valve, causing the system flow fluctuation, the guide valve at the bottom of the two gate valves of the outlet valve group is respectively provided with a horizontal cross-line and a bottom gate valve through a tee, and the cross-line gate valve is provided on the horizontal cross-line;

[0012] Furthermore, the bottom gate valve and the cross-line gate valve have the same size, both of which are DN25;

[0013] Furthermore, one end of the horizontal cross-line is connected between the shower valve and the bottom gate valve, and the other end is connected to the outlet pipeline at the rear end of the pressure gauge position in the outlet direction of the solvent filter.

[0014] The two gate valves of the inlet valve group in the utility model are M1 and M2 respectively, the two gate valves of the outlet valve group are M4 and M5 respectively, the guide valve of the outlet valve group is M6, the bottom gate valve is M7, and the cross-line gate valve is M8.

[0015] The process of the solvent filter backfilling system using the above structure is:

[0016] When the solvent filter SR401 is removed and cleaned, it is isolated by closing the inlet valve group and the outlet valve group; the solvent flows from the E402 heat exchanger to the C401 tower through the bypass pipeline under the control of the bypass valve;

[0017] When backfilling the filter, the operator fully opens (maximum flow rate) the M4 and M6 valves, and then adjusts the opening of the M8 valve according to the flow rate.

[0018] The beneficial effects of the utility model are: it can effectively control the backfilling flow rate, prevent the system flow fluctuation caused by excessive valve opening, and affect normal production; reduce the operation difficulty and operation risk, and effectively ensure the smooth operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the solvent filter backfilling system of the utility model.

[0020] In the figure, 1, solvent filter SR401, 2, inlet pipeline, 3, outlet pipeline, 4, solvent bypass pipeline, 5, bypass valve, 6, M4 gate valve, 7, M5 gate valve, 8, shower valve, 9, pressure gauge, 10, horizontal cross-line, 11, bottom gate valve, 12, cross-line gate valve. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] like Figure 1 The solvent filter backfilling system shown comprises: a solvent filter 1, an inlet pipeline 2 and an outlet pipeline 3 are respectively arranged at the inlet end and the outlet end of the solvent filter 1, an inlet valve group and an outlet valve group are respectively arranged on the inlet pipeline 2 and the outlet pipeline 3, a solvent bypass pipeline 4 is arranged between the starting end position of the inlet pipeline 2 and the end position of the outlet pipeline 3, and a bypass valve 5 is arranged on the solvent bypass pipeline 4;

[0023] The inlet valve group and the outlet valve group respectively include two parallel gate valves, and the size of each gate valve is DN300;

[0024] A guide valve 8 is provided between the two gate valves M1 and M2 of the inlet valve group and between the two gate valves M4 and M5 of the outlet valve group through the bottom pipeline;

[0025] The size of the shower valve 8 is DN25;

[0026] Pressure gauges 9 and control valves thereof are provided on the inlet pipeline 2 near the inlet end of the solvent filter 1 and on the outlet pipeline 3 near the outlet end of the solvent filter 1 , respectively, for controlling the inlet and outlet pressures of the solvent filter 1 .

[0027] In order to prevent the large-sized gate valve of the outlet valve group from opening too much when opening the valve, causing the system flow fluctuation, the guide valve at the bottom of the two gate valves M4 and M5 of the outlet valve group is respectively provided with a horizontal cross-line 10 and a bottom gate valve 11 through a tee, and a cross-line gate valve 12 is provided on the horizontal cross-line 10;

[0028] The bottom gate valve 11 and the cross-line gate valve 12 have the same size, both of which are DN25;

[0029] One end of the horizontal cross-line 10 is connected between the shower valve 8 and the bottom gate valve 11 , and the other end is connected to the outlet pipeline 3 at the rear end of the pressure gauge 9 in the outlet direction of the solvent filter 1 .

[0030] The two gate valves of the inlet valve group in the utility model are M1 and M2 respectively, the two gate valves of the outlet valve group are M4 and M5 respectively, the guide valve 8 of the outlet valve group is M6, the bottom gate valve 11 is M7, and the cross-line gate valve 12 is M8.

[0031] The process of the solvent filter backfilling system using the above structure is:

[0032] When the solvent filter SR401 is removed and cleaned, it is isolated by closing the inlet valve group M1, M2 and the outlet valve group M4, M5; the solvent flows from the E402 heat exchanger to the C401 tower through the bypass line 4 under the control of the bypass valve 5;

[0033] When backfilling filter 1, the operator fully opens valves M4 and M6, and then adjusts the opening of valve M8 according to the flow rate.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot 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 at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. A solvent filter backfilling system, It is characterized in that include: A solvent filter, wherein an inlet pipeline and an outlet pipeline are respectively arranged at the inlet end and the outlet end of the solvent filter, an inlet valve group and an outlet valve group are respectively arranged on the inlet pipeline and the outlet pipeline, a solvent bypass pipeline is arranged between the starting end position of the inlet pipeline and the end position of the outlet pipeline, and a bypass valve is arranged on the solvent bypass pipeline; the shower valve at the bottom of the two gate valves of the outlet valve group is respectively provided with a horizontal cross-line and a bottom gate valve through a tee, and a cross-line gate valve is arranged on the horizontal cross-line.

2. A solvent filter backfilling system according to claim 1, Features: The inlet valve group and the outlet valve group respectively include two parallel gate valves, and the size of each gate valve is DN300.

3. A solvent filter backfilling system according to claim 2, Features: A shower valve is arranged between the two gate valves of the inlet valve group and between the two gate valves of the outlet valve group through a bottom pipeline.

4. A solvent filter backfilling system according to claim 3, Features: The size of the shower valve is DN25.

5. A solvent filter backfilling system according to claim 1, Features: A pressure gauge and a control valve thereof are respectively provided on the inlet pipeline near the inlet end of the solvent filter and on the outlet pipeline near the outlet end of the solvent filter.

6. A solvent filter backfilling system according to claim 1, Features: The bottom gate valve and the cross-line gate valve have the same size, both of which are DN25 specifications.

7. A solvent filter backfilling system according to claim 1, Features: One end of the horizontal cross-line is connected between the shower valve and the bottom gate valve, and the other end is connected to the outlet pipeline at the rear end of the pressure gauge position in the outlet direction of the solvent filter.

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