A water supply pipeline for slurry pump water seal water

Abstract

The utility model discloses a water supply pipeline for seal water of a slurry pump, comprising a water supply pipe connected to the slurry pump and a cut-off valve, a check valve, a pressure regulating component and a flow regulating component arranged on the water supply pipe, wherein the cut-off valve is close to the water supply source, the check valve is close to the slurry pump, and the pressure regulating component and the flow regulating component are arranged between the cut-off valve and the check valve to regulate the pressure and flow of the seal water in the water supply pipe. The utility model can meet the requirements of safe and efficient water supply of the seal water by reasonably arranging corresponding valves and instrument facilities on the water supply pipeline of the seal water of the slurry pump, thereby ensuring the normal use of the slurry pump, and at the same time improving the energy efficiency of the system, realizing economic operation, and improving the degree of automatic and intelligent control.

Description

Technical Field

[0001] The utility model relates to the technical field of slurry pump sealing, in particular to a water supply pipeline for water seal of a slurry pump. Background Art

[0002] The shaft seal is a sealing device set up to prevent leakage between the rotating pump shaft and the fixed housing. The shaft seal of the slurry pump is generally a packing seal, a mechanical seal and an impeller seal. The packing seal is achieved by injecting water seal water into the packing and through the soft and hard running-in between the packing and the shaft sleeve. Therefore, the water seal water and the water seal water supply pipeline are very important for the use of the slurry pump.

[0003] However, at present, most water seal water supply pipelines still have the following problems: 1. When the pressure in the water supply pipeline is too high, there is a waste of energy, which can easily lead to leakage of water seal water; when the pressure in the water supply pipeline is too low, it cannot meet the sealing requirements, which can easily lead to leakage of slurry at the shaft seal; 2. When the pressure of the water supply pipeline at the front end of the shaft seal fluctuates, it cannot be adjusted to a suitable pressure; 3. When the amount of water in the water supply pipeline is insufficient, it can easily lead to leakage of slurry at the shaft seal; 4. Every time before the slurry pump is operated and shut down, it is necessary to manually open and close the water supply pipeline, which is cumbersome and increases the labor burden of workers. Summary of the invention

[0004] Therefore, the purpose of the utility model is to provide a water supply pipeline for seal water of a slurry pump with adjustable pressure and flow rate.

[0005] The utility model adopts the following technical solutions to implement the purpose of the above utility model.

[0006] The utility model proposes a water supply pipeline for water seal of a slurry pump, comprising a water supply pipe connected to the slurry pump and a cut-off valve, a check valve, a pressure regulating component and a flow regulating component arranged on the water supply pipe, the cut-off valve is close to the water supply source, the check valve is close to the slurry pump, and the pressure regulating component and the flow regulating component are arranged between the cut-off valve and the check valve to regulate the pressure and flow of the water seal in the water supply pipe.

[0007] In some embodiments, in order to monitor and adjust the real-time pressure in the water supply pipeline and ensure that the water supply pressure is maintained at a stable value, the pressure regulating assembly includes a first pressure gauge, a pressure reducing valve and a second pressure gauge, the first pressure gauge is arranged on the side of the shut-off valve close to the slurry pump, the second pressure gauge is arranged on the side of the check valve away from the slurry pump, and the pressure reducing valve is arranged between the first pressure gauge and the second pressure gauge.

[0008] In some embodiments, when the pressure in the water supply pipeline after the pressure reducing valve fluctuates slightly, in order to ensure that the flow rate of the water supply pipeline is maintained at a constant value, the pressure regulating assembly also includes a balancing valve, and the balancing valve is arranged between the second pressure gauge and the check valve.

[0009] In some embodiments, in order to monitor and adjust the real-time flow in the water supply pipeline, the flow regulating component includes a flow switch, and the flow switch is arranged between the second pressure gauge and the check valve.

[0010] In some embodiments, the flow switch is disposed between the second pressure gauge and the balancing valve.

[0011] In some embodiments, the flow regulating assembly further comprises a pneumatic cut-off ball valve, wherein the pneumatic cut-off ball valve is disposed between the flow switch and the check valve.

[0012] In some embodiments, the pneumatic shut-off ball valve is disposed between the flow switch and the balancing valve.

[0013] In some embodiments, the pneumatic shut-off ball valve is connected to the slurry pump so that the water supply pipeline and the slurry pump are opened or closed simultaneously.

[0014] Compared with the prior art, the beneficial effect of the utility model is that by reasonably arranging corresponding valves and instrument facilities on the water supply pipeline of the water seal water of the slurry pump, the requirements of safe and efficient water supply of the water seal water can be met, thereby ensuring the normal use of the slurry pump, and at the same time improving the system energy efficiency, realizing economical operation, and improving the degree of automatic and intelligent control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 The utility model is a schematic diagram of a water supply pipeline for seal water of a slurry pump. DETAILED DESCRIPTION

[0017] In order to better understand the present invention, various aspects of the present invention will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of the embodiments of the present invention, and do not limit the scope of the present invention in any way. It should be noted that in this specification, the expressions first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature.

[0018] It should also be understood that the terms “comprises,” “including,” “having,” “includes” and / or “comprising,” when used in this specification, indicate the presence of stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof.

[0019] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which the utility model belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0020] The utility model proposes a water supply pipeline for seal water of a slurry pump, which includes a water supply pipe 2 connected to the stuffing box interface of the slurry pump 1, and a cut-off valve 3, a check valve 4, a pressure regulating component and a flow regulating component installed on the water supply pipe 2. Among them, the cut-off valve 3 is installed on the end of the water supply pipe 2 close to the water supply source (such as a water supply box) to facilitate timely cut-off of the seal water pumped from the water supply source, and also to facilitate timely maintenance of the water supply pipeline behind the cut-off valve 3; the check valve 4 is installed on the end of the water supply pipe 2 close to the slurry pump 1 to prevent the seal water pumped from the water supply source from returning; the pressure regulating component and the flow regulating component are both installed between the cut-off valve 3 and the check valve 4 to timely monitor and regulate the pressure and flow of the seal water in the water supply pipe 2.

[0021] The utility model can meet the requirements of safe and efficient water supply of water seal water by reasonably arranging corresponding valves and instrument facilities on the water supply pipeline of the water seal water of the slurry pump, thereby ensuring the normal use of the slurry pump, and at the same time can improve the energy efficiency of the system, realize economical operation, and improve the degree of automatic and intelligent control.

[0022] In some embodiments, the pressure regulating assembly includes a first pressure gauge 5, a pressure reducing valve 6 and a second pressure gauge 7. The first pressure gauge 5 is installed on the side of the shut-off valve 3 close to the slurry pump 1, and the second pressure gauge 7 is installed on the side of the check valve 4 away from the slurry pump 1. The first pressure gauge 5 and the second pressure gauge 7 are used to monitor the pressure of the water seal water in the water supply pipeline in real time; the pressure reducing valve 6 is installed between the first pressure gauge 5 and the second pressure gauge 7, and is used to timely adjust the pressure of the water seal water in the water supply pipeline before and after the pressure regulation according to the real-time monitoring of the first pressure gauge 5 and the second pressure gauge 7, so as to ensure that the water supply pressure of the water seal water is maintained at a stable value, thereby ensuring the stability of the shaft seal of the slurry pump and the safety of the water seal water supply pipeline, and further ensuring the normal use of the slurry pump.

[0023] In some embodiments, the pressure regulating assembly further includes a balancing valve 8, which is installed between the second pressure gauge 7 and the check valve 4. When the pressure in the water supply pipeline after the pressure reducing valve 6 fluctuates slightly, the balancing valve 8 can adjust the water seal water flow rate through its internal automatic regulating valve flap and manual regulating valve flap, thereby ensuring that the flow rate of the water supply pipeline is maintained at a constant value, thereby ensuring sufficient water supply of the water seal water and ensuring the stability of the slurry pump shaft seal.

[0024] In some embodiments, the flow regulating assembly includes a flow switch 9, which is installed between the second pressure gauge 7 and the check valve 4 to monitor and adjust the flow of the seal water in the water supply pipeline in real time, so as to ensure sufficient supply of the seal water and further ensure the stability of the shaft seal of the slurry pump. Preferably, the flow switch 9 can be installed between the second pressure gauge 7 and the balance valve 8.

[0025] In some embodiments, the flow regulating assembly further includes a pneumatic cut-off ball valve 10, which is installed between the flow switch 9 and the check valve 4 to automatically cut off or connect the water supply pipeline. More preferably, the pneumatic cut-off ball valve 10 is installed between the flow switch 9 and the balancing valve 8 to improve the stability of the water supply flow when the water supply pipeline is automatically cut off or connected. Furthermore, the pneumatic cut-off ball valve 10 is electrically connected to the slurry pump 1 through the background controller, so that the water supply pipeline and the slurry pump 1 are opened or closed at the same time, thereby achieving economic operation and improving the degree of automatic and intelligent control.

[0026] See also Figure 1 , which is a schematic diagram of a water supply pipeline for seal water of a slurry pump provided by the utility model. The water supply pipeline includes a water supply pipe 2 and a cut-off valve 3, a first pressure gauge 5, a pressure reducing valve 6, a second pressure gauge 7, a flow switch 9, a pneumatic cut-off ball valve 10, a balancing valve 8, and a check valve 4 installed on the water supply pipe 2 in sequence according to the water flow direction, wherein one end of the water supply pipe 2 is connected to the water outlet of the water supply box (not shown in the figure), and the other end of the water supply pipe 2 is connected to the stuffing box interface of the slurry pump 1. The embodiment of the utility model can monitor and adjust the pressure and flow of the water supply pipeline in real time by reasonably arranging corresponding valves and instrument facilities on the water supply pipeline of the seal water of the slurry pump, thereby meeting the safe and efficient water supply of the seal water, and further ensuring the normal use of the slurry pump, while improving the energy efficiency of the system, realizing economical operation, and improving the degree of automatic and intelligent control.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation 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.

[0028] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. A water supply pipeline for seal water of a slurry pump, characterized in that: The invention comprises a water supply pipe (2) connected to a slurry pump (1), and a cut-off valve (3), a check valve (4), a pressure regulating component and a flow regulating component arranged on the water supply pipe (2), wherein the cut-off valve (3) is close to a water supply source, the check valve (4) is close to the slurry pump (1), and the pressure regulating component and the flow regulating component are arranged between the cut-off valve (3) and the check valve (4) to regulate the pressure and flow of the water seal water in the water supply pipe (2); The pressure regulating assembly comprises a first pressure gauge (5), a pressure reducing valve (6), a second pressure gauge (7) and a balancing valve (8); the first pressure gauge (5) is arranged on a side of the cut-off valve (3) close to the slurry pump (1); the second pressure gauge (7) is arranged on a side of the check valve (4) away from the slurry pump (1); the pressure reducing valve (6) is arranged between the first pressure gauge (5) and the second pressure gauge (7); and the balancing valve (8) is arranged between the second pressure gauge (7) and the check valve (4); The flow regulating assembly comprises a flow switch (9) and a pneumatic shut-off ball valve (10); the flow switch (9) is arranged between the second pressure gauge (7) and the balancing valve (8); and the pneumatic shut-off ball valve (10) is arranged between the flow switch (9) and the check valve (4).

2. The water supply pipeline for seal water of a slurry pump according to claim 1, characterized in that: The pneumatic cut-off ball valve (10) is arranged between the flow switch (9) and the balancing valve (8).

3. The water supply pipeline for seal water of a slurry pump according to claim 1, characterized in that: The pneumatic shut-off ball valve (10) is connected to the slurry pump (1) so that the water supply pipeline and the slurry pump (1) are opened or closed simultaneously.

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