Hydraulic support backwash liquid excess pressure recovery and resource utilization device

Abstract

The utility model discloses a hydraulic support backwash liquid excess pressure recovery and resource utilization device which is characterized in that an emulsion tank, an emulsion pump, a high-pressure backwash filter, a hydraulic support and a return liquid backwash filter are sequentially connected in series through pipelines, and the high-pressure backwash filter and the return liquid backwash filter are respectively communicated with a backwash liquid recovery device through pipelines. A backwash liquid storage tank, a primary filter and a secondary filter are sequentially connected in series behind the backwash liquid recovery device, and the backwash liquid storage tank is connected in series with a backwash liquid filter residue storage tank. The hydraulic support backwash liquid resource utilization integrated device has the advantages that the occupied area is small, secondary pollution is not generated in the treatment process, and good environmental, social and economic benefits are achieved.

Description

TECHNICAL FIELD

[0001] The utility model discloses hydraulic support backflushing liquid treatment technical field, concretely relates to a kind of hydraulic support backflushing liquid residual pressure recovery and resource utilization device. BACKGROUND

[0002] Improving the working stability of support hydraulic system, effectively control the pollution condition of system, it is important measure to guarantee fully mechanized working face production. On hydraulic support, although the traditional tubular filter mode is low in cost, but due to the special working environment in pit, the disassembly, replacement, installation of filter element are extremely inconvenient, directly affect the service life and production efficiency of equipment. Automatic backflushing filter is a simple and effective filter backflushing equipment, and it is small in size, high in degree of automation, convenient to operate and manage, does not need to replace filter element when encountering blockage, and automatically completes the cleaning of hydraulic support filter screen in a short time.

[0003] The discharge of pollutants in the support hydraulic system automatic backflushing filter is by the flushing function of emulsion in the system to the filter element, which discharges the pollutants on the surface of filter element together with emulsion to working face, so that the pollutants in the system are cleaned, but the discharged emulsion will cause serious pollution to underground water resource environment, because the widely used emulsion is usually diluted by emulsified oil, emulsifier and additive in water, and is a uniform and stable colloid material composed of water and oil. Emulsion and synthetic liquid, concentrated liquid are not decomposable medium, directly discharged to goaf, on the one hand, may cause pollution to underground water body and cause waste of emulsion, on the other hand, may flow to underground sump, and the water in sump is pumped to the surface for treatment, leading to increase of COD, and the original equipment cannot meet the standard for treatment, so new treatment equipment must be added, thereby increasing treatment cost.

[0004] The state actively promotes the environmental protection policy of mine water, to achieve zero discharge or near zero discharge standard, so the residual pressure recovery and resource utilization of hydraulic support backflushing liquid not only responds to the current environmental protection policy, but also saves a large amount of material cost for enterprise, and this technology has important social and economic benefits. UTILITY MODEL CONTENT

[0005] To solve the above problems in the prior art, the utility model provides a kind of hydraulic support backwash liquid residual pressure recovery and resource utilization device, to solve the above problems in the prior art. To achieve the above purpose, the utility model provides the following technical scheme: according to the first aspect of the utility model, a kind of hydraulic support backwash liquid residual pressure recovery and resource utilization device, the device includes by emulsion tank, emulsion pump, high-pressure backwash filter, hydraulic support, liquid return backwash filter is sequentially connected to form circulation loop;Liquid return backwash filter and the other output of high-pressure backwash filter are connected in parallel and then as backwash liquid recovery device input pipeline, backwash liquid recovery device output is sequentially returned to the other input of emulsion tank after passing through backwash liquid storage tank, primary filter and secondary filter;The other output of primary filter and secondary filter is connected in parallel and then connected to backwash liquid recovery device input pipeline;Backwash liquid storage tank is also connected with backwash liquid filter residue storage tank.

[0006] Further, the backwash liquid recovery device is composed of a hydraulic motor, a plunger pump and an energy accumulator.

[0007] Further, the backwash liquid recovery device is not less than one, connected by series connection.

[0008] Further, the backwash liquid storage tank is an open storage tank, which is connected with the hydraulic motor to receive the backwash liquid passing through the backwash liquid recovery device.

[0009] Further, the primary filter and the secondary filter are both high-pressure backwash filters.

[0010] Further, the filtering precision of the secondary filter is higher than that of the primary filter.

[0011] Further, the filtrate generated by the primary filter enters the emulsion tank through the secondary filter for standby.

[0012] Further, the backwash liquid of the primary filter and the secondary filter is produced according to the pressure difference between the primary filter and the secondary filter.

[0013] Further, the other output of the liquid return backwash filter and the high-pressure backwash filter is provided with a valve.

[0014] The utility model has the following advantages:

[0015] 1. The hydraulic support backwash liquid residual pressure recovery device can recover and utilize the pressure of backwash, and the residual pressure energy-saving rate is about 30%.

[0016] 2. The hydraulic support backwashing liquid resource utilization can save a large amount of emulsion material cost and COD increase caused by backwashing liquid discharge into a water sump, and the cost of equipment modification for treating water sump water to meet standards; on the other hand, the hydraulic support backwashing liquid realizes zero discharge, and avoids pollution to the environment.

[0017] 3. The device is an integrated device, has small land occupation, and is convenient to place and operate. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A schematic diagram of a hydraulic support backwashing liquid residual pressure recovery and resource utilization device provided for some embodiments of the utility model.

[0019] Figure 2 A process flow chart of a hydraulic support backwashing liquid residual pressure recovery and resource utilization device provided for some embodiments of the utility model.

[0020] In the figure, 1 is an emulsion tank, 2 is an emulsion pump, 3 is a high-pressure backwashing filter, 4 is a hydraulic support, 5 is a back liquid backwashing filter, 6 is a valve, 7 is a hydraulic motor, 8 is a plunger pump, 9 is an energy accumulator, 10 is a backwashing liquid storage tank, 11 is a water inlet pump, 12 is a primary filter, 13 is a secondary filter, and 14 is a backwashing liquid residue storage tank. DETAILED DESCRIPTION

[0021] The embodiments of the utility model are described below by specific examples, and those skilled in the art can easily understand other advantages and effects of the utility model from the disclosed content of the specification. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. Embodiment 1

[0022] As Figures 1 to 2As shown, the utility model discloses a first aspect embodiment of a kind of hydraulic support backwash liquid residual pressure recovery and resource utilization device, the device includes by emulsion tank 1, emulsion pump 2, high-pressure backwash filter 3, hydraulic support 4, liquid return backwash filter 5 sequentially in series formed circulation loop;Liquid return backwash filter 5 and the other output of high-pressure backwash filter 3 are connected in parallel and then as backwash liquid recovery device input end pipeline, backwash liquid recovery device output end is sequentially returned to the other input end of emulsion tank 1 after passing through backwash liquid storage tank 10, primary filter 12 and secondary filter 13;The other output of primary filter 12 and secondary filter 13 is connected in parallel and then access backwash liquid recovery device input end pipeline;Backwash liquid storage tank 10 is also connected with backwash liquid filter residue storage tank 14.

[0023] In the above embodiment, it needs to be explained that, when using, the backwash liquid generated by high-pressure backwash filter 3 and liquid return backwash filter 5 enters the hydraulic motor 7 as shown in Figure 1 , the pressure of backwash liquid is converted into the accumulator 9 for storage by the plunger pump 8 as shown in Figure 1 , and the backwash liquid enters the backwash liquid storage tank 10 for treatment as shown in Figure 1 ; the outlet pipeline of high-pressure backwash filter 3 and liquid return backwash filter 5 is provided with a valve 6.

[0024] The technical effect achieved by the above embodiment is that: through the hydraulic support backwash liquid residual pressure recovery and resource utilization device of the embodiment, the hydraulic support backwash liquid residual pressure recovery device can recycle and utilize the pressure of backwash, and the energy saving rate of residual pressure is about 30%. The hydraulic support backwash liquid resource utilization can save a large amount of emulsion material cost and the cost of equipment modification for treating water warehouse water to meet the standard due to the increase of COD caused by the discharge of backwash liquid into the water warehouse; on the other hand, it realizes zero discharge of hydraulic support backwash liquid and avoids pollution to the environment. The device is an integrated device, has small land occupation, and is convenient to place and operate for treating backwash liquid underground. Embodiment 2

[0025] As shown in Figures 1 to 2 , a hydraulic support backwash liquid residual pressure recovery and resource utilization device includes all the contents of embodiment 1, in addition, the backwash liquid recovery device is composed of a hydraulic motor 7, a plunger pump 8 and an energy storage device 9; the backwash liquid in high-pressure state is converted into energy by the hydraulic motor 7 and the plunger pump 8, and the energy is stored in the energy storage device 9 for standby.

[0026] Optionally, the backwash liquid recovery device is not less than 1, which is connected in series. Embodiment 3

[0027] As shown in Figures 1 to 2As shown in FIG. 5, a hydraulic support backwash liquid residual pressure recovery and resource utilization device includes all the contents of embodiment 2, in addition, the backwash liquid storage tank 10 is an open storage tank, which is connected with the hydraulic motor 7 to receive the backwash liquid passing through the backwash liquid recovery device. Embodiment 4

[0028] As shown in FIG. 5, a hydraulic support backwash liquid residual pressure recovery and resource utilization device includes all the contents of embodiment 2, in addition, the backwash liquid storage tank 10 is an open storage tank, which is connected with the hydraulic motor 7 to receive the backwash liquid passing through the backwash liquid recovery device. Figures 1 to 2

[0029] Optionally, the filtering precision of the secondary filter 13 is higher than that of the primary filter 12.

[0030] Optionally, the filtrate generated by the primary filter 12 enters the emulsion tank 1 through the secondary filter 13 for standby.

[0031] Optionally, the backwash liquid of the primary filter 12 and the secondary filter 13 is produced according to the pressure difference of the primary filter 12 and the secondary filter 13.

[0032] The above-mentioned embodiments achieve the following technical effects: the backwash liquid in the backwash storage tank 10 enters the primary filter 12 under the action of the water inlet pump 11, the primary filter 12 filters out large-particle impurities, and the filtrate continues to enter the secondary filter 13, the filtering precision of the secondary filter 13 is higher than that of the primary filter 12, and the filtrate can meet the use requirements of the hydraulic support, the backwash liquid pressure generated by the primary filter 12 and the secondary filter 13 is recovered through the hydraulic motor 7 and the plunger pump 8 to enter the energy storage device 9, and the backwash liquid enters the backwash storage tank 10 for standby again. Figure 1 Figure 1 Figure 1 Figure 1 Figure 1 Figure 1 Figure 1 Figure 1 Figure 1 Embodiment 5

[0033] As shown in FIG. 5, a hydraulic support backwash liquid residual pressure recovery and resource utilization device includes all the contents of embodiment 2, in addition, the backwash liquid storage tank 10 is an open storage tank, which is connected with the hydraulic motor 7 to receive the backwash liquid passing through the backwash liquid recovery device. Figures 1 to 2 The above-mentioned embodiments achieve the following technical effects: the backwash liquid in the backwash storage tank 10 enters the primary filter 12 under the action of the water inlet pump 11, the primary filter 12 filters out large-particle impurities, and the filtrate continues to enter the secondary filter 13, the filtering precision of the secondary filter 13 is higher than that of the primary filter 12, and the filtrate can meet the use requirements of the hydraulic support, the backwash liquid pressure generated by the primary filter 12 and the secondary filter 13 is recovered through the hydraulic motor 7 and the plunger pump 8 to enter the energy storage device 9, and the backwash liquid enters the backwash storage tank 10 for standby again.

[0034] Figure 1 The above-mentioned embodiments achieve the following technical effects: the backwash liquid in the backwash storage tank 10 enters the primary filter 12 under the action of the water inlet pump 11, the primary filter 12 filters out large-particle impurities, and the filtrate continues to enter the secondary filter 13, the filtering precision of the secondary filter 13 is higher than that of the primary filter 12, and the filtrate can meet the use requirements of the hydraulic support, the backwash liquid pressure generated by the primary filter 12 and the secondary filter 13 is recovered through the hydraulic motor 7 and the plunger pump 8 to enter the energy storage device 9, and the backwash liquid enters the backwash storage tank 10 for standby again. Figure 1 ​​​​​​​​​​​The middle backwash liquid filter residue storage tank 14 is sent to a hazardous waste treatment station.

[0035] In the description of the present utility model, it is to be understood that the directions or positional relationships indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present utility model.

[0036] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In the present utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0038] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0039] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

[0040] In the description of the present application, the description of the terms "embodiment one", "embodiment two", "example", "specific example", or "some examples" means that the specific method, device or feature described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the described specific features, methods, devices or characteristics can be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art can combine and combine the features of different embodiments or examples described in the present application and the characteristics of different embodiments or examples without contradiction.

[0041] The above is only the preferred embodiment of the present application, and does not limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A device for recovering residual pressure and utilizing resources of backflushing fluid in hydraulic supports, characterized in that, The device includes a circulation loop formed by connecting an emulsion tank (1), an emulsion pump (2), a high-pressure backwash filter (3), a hydraulic support (4), and a return liquid backwash filter (5) in series. The other output ends of the return liquid backwash filter (5) and the high-pressure backwash filter (3) are connected in parallel to serve as the input pipeline of the backwash liquid recovery device. The output end of the backwash liquid recovery device passes through the backwash liquid storage tank (10), the primary filter (12), and the secondary filter (13) in sequence before being connected back to the other input end of the emulsion tank (1). The other output ends of the primary filter (12) and the secondary filter (13) are connected in parallel to the input pipeline of the backwash liquid recovery device. The backwash liquid storage tank (10) is also connected to a backwash liquid filter residue storage tank (14).

2. The hydraulic support backflushing fluid residual pressure recovery and resource utilization device according to claim 1, characterized in that, The backwash fluid recovery device consists of a hydraulic motor (7), a plunger pump (8), and an energy storage device (9). The high-pressure backwash fluid is recovered by the hydraulic motor (7) and the plunger pump (8), and its pressure is converted into energy and stored in the energy storage device (9) for later use.

3. The hydraulic support backflushing fluid residual pressure recovery and resource utilization device according to claim 2, characterized in that, There shall be at least one backwash liquid recovery device, which shall be connected in series.

4. The hydraulic support backflushing fluid residual pressure recovery and resource utilization device according to claim 3, characterized in that, The backwash liquid storage tank (10) is an open storage tank connected to a hydraulic motor (7) to receive backwash liquid from the backwash liquid recovery device.

5. The hydraulic support backflushing fluid residual pressure recovery and resource utilization device according to claim 1, characterized in that, Both the primary filter (12) and the secondary filter (13) are high-pressure backwash filters (3).

6. The hydraulic support backflushing fluid residual pressure recovery and resource utilization device according to claim 5, characterized in that, The secondary filter (13) has a higher filtration accuracy than the primary filter (12).

7. The hydraulic support backflushing fluid residual pressure recovery and resource utilization device according to claim 6, characterized in that, The filtrate produced by the primary filter (12) passes through the secondary filter (13) and enters the emulsion tank (1) for later use.

8. The hydraulic support backflushing fluid residual pressure recovery and resource utilization device according to claim 7, characterized in that, The backwash liquid of the primary filter (12) and the secondary filter (13) is backwashed based on the pressure difference between the primary filter (12) and the secondary filter (13).

9. The hydraulic support backflushing fluid residual pressure recovery and resource utilization device according to claim 1, characterized in that, A valve (6) is provided at the other output end of the return liquid backwash filter (5) and the high pressure backwash filter (3).

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