Multi-pump online variable-frequency constant-pressure water pump

Abstract

The utility model discloses a multi-pump online variable-frequency constant-pressure water pump, which relates to the technical field of water pumps and comprises a base, a frequency converter is mounted on the surface of the base, a first constant-pressure water pump, a second constant-pressure water pump and a third constant-pressure water pump are mounted on the surface of the base, and the output end of the first constant-pressure water pump is fixedly connected with a water outlet pipe. A pressure tank is fixedly connected to the surface of the first constant-pressure water pump, a supporting piece is installed on the surface of a water outlet pipe, a water inlet pipe is installed at a water inlet of the first constant-pressure water pump, a filtering piece is installed on the surface of the water inlet pipe, and a dismounting piece is installed on the surface of the water inlet pipe. According to the utility model, the connecting flange is firstly detached from the water inlet pipe, and then the connecting flange is twisted, so that the filtering main body and the second filtering main body are rotationally separated into two parts, and the filtering net and the filtering cloth connected to the filtering net are taken out, so that the filtering net and the filtering cloth are convenient to replace, and the effectiveness of water filtering is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a multi-pump online variable frequency constant pressure water pump. Background Art

[0002] Multi-pump variable frequency operation is a commonly used fluid conveying structure. The efficiency of the water pump directly affects the energy consumption and efficiency of fluid conveying. At present, constant pressure water supply is mostly achieved by variable frequency constant pressure water pumps. Variable frequency constant pressure water pumps can implement stepless speed regulation for the water pump motor. According to the water consumption and water pressure changes, through computer detection and calculation, the water pump speed is automatically changed to keep the water pressure constant to meet the water use requirements. Compared with traditional water towers, high-level water tanks, pressure tanks and other water supply methods, it is more efficient and energy-saving, especially when the head and flow rate are large, multiple pumps are often used to ensure constant pressure water supply.

[0003] At present, publication number CN208546325U discloses a multi-pump online variable frequency constant pressure water pump. Since the water pressure at the water inlet and the water outlet often changes, the water flow rate is too large, and the kinetic energy of the solid suspended matter also increases accordingly, resulting in a large amount of solid suspended matter entering the water pump, affecting the water quality at the water outlet. At the same time, long-term operation will also wear the impeller and seals in the pump, reducing the service life of the water pump. The base height of the existing multi-pump online variable frequency constant pressure water pump cannot be adjusted, especially when the multi-pump online installation position needs to be raised, the height cannot be flexibly adjusted, the use and installation are inconvenient, and the lifting is time-consuming and laborious. Most of the existing variable frequency constant pressure water pumps only use pressure sensors to monitor the water pressure, and the control accuracy is low. The existing multi-pump online variable frequency constant pressure water pump has a small range of adjusting the water flow rate, especially when low-pressure water and high-pressure water need to be switched, if all pumps are operated at a relatively low pressure for a long time, the energy consumption is high, and replacing a single pump is more troublesome, affecting work efficiency.

[0004] In order to solve the problem of using multi-pump online variable frequency constant pressure water pumps, the existing technology uses a filtering device to filter water and adjusts the base height to process it, but the filter screen is inconvenient to replace, which leads to poor filtering effect of water. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-pump online variable frequency constant pressure water pump to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A multi-pump online variable frequency constant pressure water pump comprises a base, a frequency converter is installed on the surface of the base, constant pressure water pump one, constant pressure water pump two and constant pressure water pump three are installed on the surface of the base, the output end of the constant pressure water pump one is fixedly connected to a water outlet pipe, the surface of the constant pressure water pump one is fixedly connected to a pressure tank, a support is installed on the surface of the water outlet pipe, an inlet pipe is installed at the water inlet of the constant pressure water pump one, a filter is installed on the surface of the water inlet pipe, a disassembly part is installed on the surface of the water inlet pipe, the disassembly part comprises a first pipe fitting, the first pipe fitting is installed on the output end of the constant pressure water pump one, a ferrule is installed on the surface of the ferrule, a sealing gasket is installed inside the ferrule, and a second pipe fitting is installed on the surface of the ferrule.

[0008] A further improvement of the technical solution of the utility model lies in that: the clamping sleeve comprises a clamping sleeve, the clamping sleeve is installed on the surface of the first pipe fitting, the surface of the clamping sleeve is threadedly connected with a fixing bolt, the surface of the clamping sleeve is fixedly connected with a connecting block, one end of the connecting block is hinged with a clamping sleeve 2, the surfaces of the clamping sleeve 2 and the clamping sleeve are provided with grooves, and the clamping sleeve and the clamping sleeve 2 are flexibly opened and closed by rotating on the clamping sleeve through the fixing bolt, and the first pipe fitting and the second pipe fitting are fixed through the groove, so that the water inlet pipe can be flexibly connected and fixed, and the replacement of the water inlet pipe is convenient.

[0009] A further improvement of the technical solution of the utility model is that the second pipe fitting includes a connecting part, which is installed inside the ferrule, and an annular groove is provided on the surface of the connecting part. One end of the connecting part is fixedly connected to a connecting pipe, which is installed in the groove through the connecting part, and then used to fit in the sealing gasket through the annular groove, thereby achieving an effective sealing effect.

[0010] A further improvement of the technical solution of the utility model is that the water inlet pipe includes a water delivery flange, one end of the water delivery flange is installed with a disassembly component, one end of the water delivery flange is fixedly connected to a water pipe, one end of the water pipe is fixedly connected to a flange, the water source is transmitted through the water pipe, and the disassembly component is connected through the water delivery flange.

[0011] A further improvement of the technical solution of the utility model lies in that: the filter element comprises a connecting flange, the connecting flange is installed on the surface of the water inlet pipe, one end of the connecting flange is fixedly connected to a filter body, one end of the filter body is clamped with a filter body 2, a sealing ring is sleeved on the surface of the filter body 2, a filter net is clamped inside the filter body 2, a filter cloth is fixedly connected inside the filter net, the filter element is separated and fixed by turning the knobs of the filter body and the filter body 2, the sealing ring is used to seal and fix the filter body and the filter body 2, and then the filter element is separated, so as to achieve the effect of convenient replacement of the filter net and the filter cloth.

[0012] The further improvement of the technical solution of the utility model is that the filter cloth is made of forged polyester material, the wire diameter is 0.3-0.4m, the weaving method of the filter cloth is forged weaving, and the weaving method of the filter cloth and the wire diameter of 0.3-0.4m make the water filtration more refined.

[0013] A further improvement of the technical solution of the utility model is that: the support member includes a support block, the support block is fixedly connected to the surface of the base, the surface of the support block is fixedly connected with a telescopic column, the surface of the telescopic column is fixedly connected with a placement groove, the surface of the placement groove is threadedly connected with a bolt, the surface of the bolt is threadedly connected with a fixing sleeve, the adjustment of the overall support column is driven by the telescopic column, the placement groove and the fixing sleeve are flexibly connected by the bolt, thereby achieving the effect of supporting the water pipe.

[0014] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0015] The utility model provides a multi-pump online variable frequency constant pressure water pump, which first removes the connecting flange from the water inlet pipe and then twists the connecting flange to rotate the filter body and separate the filter body into two parts, so that the filter net and the filter cloth connected to the filter net can be taken out, thereby facilitating the replacement of the filter net and the filter cloth and ensuring the effectiveness of water filtration.

[0016] The utility model provides a multi-pump online variable frequency constant pressure water pump, which is capable of opening and closing a clamping sleeve on a second clamping sleeve through a connecting block by rotating a fixing bolt, thereby achieving flexible disassembly and connection of the variable frequency constant pressure water pump and a water inlet pipe, a groove for placing a first pipe fitting and a second pipe fitting, the grooves are both provided on the surfaces of the clamping sleeve and the clamping sleeve, a connecting portion is placed in the groove, and the annular groove is used to fit on the protrusion of a sealing gasket, thereby forming a good sealing effect.

[0017] The utility model provides a multi-pump online variable frequency constant pressure water pump. When a filter main body and a filter main body 2 are connected by threads, a sealing groove is formed between a protruding portion and the outer surfaces of the filter main body and the filter main body 2. The sealing ring is arranged in the sealing groove, and the width of the sealing ring is equal to or slightly larger than the width of the sealing groove, so that in the process of threaded connection between the filter main body and the filter main body 2, part of the side of the filter main body and the filter main body 2 abuts against the sealing ring, so that the sealing effect is better and water leakage is prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the disassembly part of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the water inlet pipe of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the filter element of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the support member of the utility model.

[0023] In the figure: 1, base; 2, inverter; 3, constant pressure water pump 1; 4, constant pressure water pump 2; 5, constant pressure water pump 3; 6, pressure tank; 7, water outlet pipe; 8, disassembly part; 80, first pipe fitting; 81, ferrule; 810, clamping sleeve; 811, connecting block; 812, fixing bolt; 813, clamping sleeve 2; 814, groove; 82, sealing gasket; 83, second pipe fitting; 830, connecting pipe; 831, connecting part ;832, annular groove; 9, water inlet pipe; 90, water delivery flange; 91, water pipe; 92, flange; 10, filter element; 101, filter body; 102, connecting flange; 103, sealing ring; 104, filter screen; 105, filter cloth; 106, filter body II; 11, support member; 110, support block; 111, telescopic column; 112, placement groove; 113, fixing sleeve; 114, bolt. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the embodiments: Example 1

[0025] like Figure 1-5As shown, the utility model provides a multi-pump online variable frequency constant pressure water pump, including a base 1, a frequency converter 2 is installed on the surface of the base 1, a constant pressure water pump 3, a constant pressure water pump 2 4 and a constant pressure water pump 3 5 are installed on the surface of the base 1, the output end of the constant pressure water pump 3 is fixedly connected with a water outlet pipe 7, the surface of the constant pressure water pump 3 is fixedly connected with a pressure tank 6, the surface of the water outlet pipe 7 is installed with a support 11, the water inlet of the constant pressure water pump 3 is installed with a water inlet pipe 9, the surface of the water inlet pipe 9 is installed with a filter 10, the surface of the water inlet pipe 9 is installed with a disassembly part 8, the disassembly part 8 includes a first pipe fitting 80, the first pipe fitting 80 is installed on the output end of the constant pressure water pump 3, a ferrule 81 is installed on the surface of the first pipe fitting 80, a sealing gasket 82 is installed inside the ferrule 81, and a second pipe fitting 83 is installed on the surface of the ferrule 81, which is driven by the constant pressure water pump 3, the constant pressure water pump 2 4 and the constant pressure water pump 3 5, and is driven by the constant pressure water pump 3, the constant pressure water pump 2 4 and the constant pressure water pump 3 5. Water is pumped through the water inlet pipe 9 and then transmitted to the water outlet pipe 7 for drainage. Frequency conversion operation is performed through the frequency converter 2. Pressure monitoring is performed through the pressure tank 6. Then, the disassembly part 8 is used to connect the water inlet pipe 9 with the constant pressure water pump 1 3, the constant pressure water pump 2 4 and the constant pressure water pump 3 5, so as to facilitate the disassembly and connection of the water outlet pipe 7. The water is filtered by the filter 10 to prevent impurities in the water from affecting the transmission of water. The water outlet pipe 7 is supported by the support 11. The first pipe fitting 80 and the second pipe fitting 83 are die-casting parts. The first pipe fitting 80 and the second pipe fitting 83 are used to connect the constant pressure water pump 1 3, the constant pressure water pump 2 4 and the constant pressure water pump 3 5 with the water inlet pipe 9. The ferrule 81 is used to fix the first pipe fitting 80 and the second pipe fitting 83. The sealing gasket 82 is used to seal the joints between the first pipe fitting 80 and the second pipe fitting 83 and the ferrule 81, so as to facilitate the flexible disassembly and connection of the water inlet pipe 9. Example 2

[0026] like Figure 1-5As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the clamping sleeve 81 includes a clamping sleeve 810, which is installed on the surface of the first pipe fitting 80, and the surface of the clamping sleeve 810 is threadedly connected with a fixing bolt 812, and the surface of the clamping sleeve 810 is fixedly connected with a connecting block 811, and one end of the connecting block 811 is hinged with a clamping sleeve 2 813, and the surfaces of the clamping sleeve 2 813 and the clamping sleeve 810 are provided with a groove 814, and the second pipe fitting 83 includes a connecting portion 831, and the connecting portion 831 is installed inside the clamping sleeve 81, and the surface of the connecting portion 831 is provided with an annular groove 832, and one end of the connecting portion 831 is fixedly connected with a connecting pipe 830, and by rotating the fixing bolt 812, the clamping sleeve 810 is opened and closed on the clamping sleeve 2 813 through the connecting block 811, and the groove 814 is used to place the first pipe fitting 80 and the second pipe fitting 83, and the grooves 814 are both provided on the surfaces of the clamping sleeve 810 and the clamping sleeve 2 813. The connecting portion 831 is used to be placed in the groove 814, and the annular groove 832 is used to fit on the protrusion of the sealing gasket 82, thereby forming a good sealing effect. Example 3

[0027] like Figure 1-5As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the water inlet pipe 9 includes a water delivery flange 90, the water delivery flange 90 is installed at one end of the disassembly member 8, one end of the water delivery flange 90 is fixedly connected to a water pipe 91, one end of the water pipe 91 is fixedly connected to a flange 92, the filter element 10 includes a connecting flange 102, the connecting flange 102 is installed on the surface of the water inlet pipe 9, one end of the connecting flange 102 is fixedly connected to a filter body 101, one end of the filter body 101 is clamped with a filter body 2 106, the surface of the filter body 2 106 is sleeved with a sealing ring 103, and the filter body The filter screen 104 is clamped inside the body 106, and the filter screen 104 is fixedly connected to the filter cloth 105 inside. The filter cloth 105 is a forged polyester material, and the diameter of the wire is 0.3-0.4m. The weaving method of the filter cloth 105 is forged weaving. The support member 11 includes a support block 110, and the support block 110 is fixedly connected to the surface of the base 1. The surface of the support block 110 is fixedly connected to a telescopic column 111, and the surface of the telescopic column 111 is fixedly connected to a placement groove 112. The surface of the placement groove 112 is threadedly connected to a bolt 114, and the surface of the bolt 114 is threadedly connected to a fixing sleeve 113. By first connecting The flange 102 is removed from the water inlet pipe 9, and then the flange 102 is twisted to unscrew the filter body 101 and the second filter body 106 into two parts, so that the filter screen 104 and the filter cloth 105 connected to the filter screen 104 are taken out, and the inner side of the sealing ring 103 is circular and sleeved on the outer side of the protrusion, and the two sides of the sealing ring 103 are respectively fitted and sealed with the filter body 101 and the second filter body 106, wherein, when the filter body 101 and the second filter body 106 are connected by threaded cooperation, the protrusion and the outer surface of the filter body 101 and the second filter body 106 are A sealing groove is formed between the filter body 101 and the filter body 106, and the sealing ring 103 is arranged in the sealing groove, and the width of the sealing ring 103 is equal to or slightly larger than the width of the sealing groove, so that during the threaded connection between the filter body 101 and the filter body 106, the sealing ring 103 is pressed against the side of the filter body 101 and the filter body 106, thereby improving the sealing performance of the sealing ring 103, and the overall support member 11 is driven by the telescopic column 111 to support, and the fixing sleeve 113 and the placement groove 112 are flexibly fixed by the bolt 114, which is convenient for flexible support of the water pipe.

[0028] The following is a detailed description of the working principle of the multi-pump online variable frequency constant pressure water pump.

[0029] like Figure 1-5As shown, constant pressure water pump 1 3, constant pressure water pump 2 4 and constant pressure water pump 3 5 are driven to draw water online, water is transmitted through the water inlet pipe 9, the water is filtered when being transmitted in the water inlet pipe 9 by the filter element 10, and then transmitted to the water outlet pipe 7, the water outlet pipe 7 is supported by the support element 11, and the water inlet pipe 9 is connected with the constant pressure water pump 1 3, constant pressure water pump 2 4 and constant pressure water pump 3 5 by the disassembly element 8, and frequency conversion operation is performed by the frequency converter 2.

[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A multi-pump online variable frequency constant pressure water pump, comprising a base (1), characterized in that: A frequency converter (2) is mounted on the surface of the base (1); a constant pressure water pump 1 (3), a constant pressure water pump 2 (4) and a constant pressure water pump 3 (5) are mounted on the surface of the base (1); an output end of the constant pressure water pump 1 (3) is fixedly connected to a water outlet pipe (7); a pressure tank (6) is fixedly connected to the surface of the constant pressure water pump 1 (3); a support member (11) is mounted on the surface of the water outlet pipe (7); a water inlet of the constant pressure water pump 1 (3) is mounted to a water inlet pipe (9); a filter member (10) is mounted on the surface of the water inlet pipe (9); and a disassembly member (8) is mounted on the surface of the water inlet pipe (9); The disassembly component (8) comprises a first pipe component (80), the first pipe component (80) being mounted at the output end of a constant pressure water pump (3), a ferrule (81) being mounted on the surface of the first pipe component (80), a sealing gasket (82) being mounted inside the ferrule (81), and a second pipe component (83) being mounted on the surface of the ferrule (81).

2. A multi-pump online variable frequency constant pressure water pump according to claim 1, characterized in that: The clamping sleeve (81) comprises a clamping sleeve (810), the clamping sleeve (810) is installed on the surface of the first pipe (80), the surface of the clamping sleeve (810) is threadedly connected with a fixing bolt (812), the surface of the clamping sleeve (810) is fixedly connected with a connecting block (811), one end of the connecting block (811) is hinged with a second clamping sleeve (813), and the surfaces of the second clamping sleeve (813) and the clamping sleeve (810) are provided with grooves (814).

3. A multi-pump online variable frequency constant pressure water pump according to claim 1, characterized in that: The second pipe fitting (83) comprises a connecting portion (831), the connecting portion (831) being installed inside the ferrule (81), an annular groove (832) being provided on the surface of the connecting portion (831), and a connecting pipe (830) being fixedly connected to one end of the connecting portion (831).

4. A multi-pump online variable frequency constant pressure water pump according to claim 1, characterized in that: The water inlet pipe (9) comprises a water delivery flange (90), one end of the water delivery flange (90) being mounted on a disassembly component (8), one end of the water delivery flange (90) being fixedly connected to a water pipe (91), and one end of the water pipe (91) being fixedly connected to a flange (92).

5. The multi-pump online variable frequency constant pressure water pump according to claim 1, characterized in that: The filter element (10) comprises a connecting flange (102), the connecting flange (102) being mounted on the surface of a water inlet pipe (9), one end of the connecting flange (102) being fixedly connected to a filter body (101), one end of the filter body (101) being clamped with a second filter body (106), a sealing ring (103) being sleeved on the surface of the second filter body (106), a filter screen (104) being clamped inside the second filter body (106), and a filter cloth (105) being fixedly connected inside the filter screen (104).

6. A multi-pump online variable frequency constant pressure water pump according to claim 5, characterized in that: The filter cloth (105) is made of forged woven polyester material, the diameter of the wire is 0.3-0.4 m, and the weaving method of the filter cloth (105) is forged woven.

7. The multi-pump online variable frequency constant pressure water pump according to claim 1, characterized in that: The support member (11) comprises a support block (110), the support block (110) being fixedly connected to the surface of the base (1), the surface of the support block (110) being fixedly connected to a telescopic column (111), the surface of the telescopic column (111) being fixedly connected to a placement groove (112), the surface of the placement groove (112) being threadedly connected to a bolt (114), and the surface of the bolt (114) being threadedly connected to a fixing sleeve (113).

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