Size-changeable single-stage centrifugal pump adopting net-shaped structure

Abstract

The utility model discloses a size-changeable single-stage centrifugal pump adopting a net-shaped structure, and relates to the technical field of high-speed centrifugal pump supporting. Comprising a water outlet base, a motor is fixedly installed on the water outlet base, the output end of the motor is fixedly connected with a main shaft, a fixing plate and a pump shell are arranged on the main shaft, a flat oval pipe is fixedly installed on the fixing plate, the flat oval pipe is further fixedly connected to the water outlet base, a positioning ring is rotationally connected to the main shaft, and the positioning ring is slidably connected to the flat oval pipe. A lower filter screen and an upper filter screen are fixedly installed on the positioning ring, the lower filter screen is further fixedly installed on the fixing plate, the upper filter screen is further fixedly installed on the water outlet base, the lower filter screen and the upper filter screen are adopted to replace a traditional support, and therefore a client can conveniently adjust the length while the stability and the fixity of connection are guaranteed, and the practicability is high. And the mold opening cost of a customer is reduced, the adjusting efficiency is improved, the assembly process of the pump is simplified through the filter screen supporting structure, complex machining and assembly steps are reduced, and therefore the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-speed centrifugal pump supports, in particular to a single-stage centrifugal pump which adopts a mesh structure and can change size. Background Art

[0002] Currently, conventional high-speed centrifugal pumps face several limitations and challenges in their structural design. The support structure of conventional centrifugal pumps typically consists of complex brackets that require precise machining and assembly to ensure pump stability and performance. However, this structural design not only increases manufacturing costs but also limits product flexibility and adjustability. Utility Model Content

[0003] In response to the above technical problems, the present application solves the problem that the support structure of a traditional high-speed centrifugal pump is inconvenient to adjust.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is: a single-stage centrifugal pump with a mesh structure that can change size, including a water outlet seat, a motor is fixedly installed on the water outlet seat, the output end of the motor is fixedly connected to the main shaft, and a fixed plate and a pump casing are provided on the end of the main shaft away from the motor. The pump casing is fixedly connected to the fixed plate, and a flat elliptical tube is fixedly connected to the fixed plate, and the flat elliptical tube is also fixedly connected to the water outlet seat. A positioning ring is rotatably connected to the main shaft, and the positioning ring is slidably connected to the flat elliptical tube. A lower filter screen and an upper filter screen are fixedly installed on the positioning ring, and the lower filter screen is also fixedly installed on the pump casing, and the upper filter screen is also fixedly installed on the water outlet seat. A fixed plate is provided on the pump casing, and a positioning structure is provided on the fixed plate. The fixed plate and the positioning structure are rotatably arranged with the main shaft.

[0005] In order to better realize the present invention, further, the lower filter screen and the upper filter screen are made of hard metal and will not collapse or dent.

[0006] In order to better realize the present invention, further, the lower filter screen and the upper filter screen are installed by bolts.

[0007] In order to better realize the present utility model, further, the thickness of the lower filter screen and the upper filter screen is 1 mm.

[0008] In order to better realize the present invention, further, the thickness of the positioning ring is 6 mm, and two 1 mm grooves are provided on the positioning ring for installing the lower filter screen and the upper filter screen.

[0009] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0010] 1. The utility model replaces the traditional bracket by adopting the lower filter and the upper filter, thereby ensuring the stability and fixity of the connection while facilitating the customer to adjust the length, reducing the customer's mold opening cost and improving the adjustment efficiency.

[0011] 2. Compared with the traditional bracket design, the filter support structure of the utility model simplifies the assembly process of the pump, reduces complex processing and assembly steps, and thus reduces manufacturing costs.

[0012] 3. The utility model provides a positioning structure on the fixed plate to ensure that the main shaft can run at high speed for a long time and solve the problem of shaft swing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic structural diagram of the positioning ring of the utility model;

[0016] Figure 3 for Figure 2 A magnified view of the local structure at point A;

[0017] Figure 4 for Figure 2 A magnified view of the local structure at point B in the middle;

[0018] Figure 5 This is a schematic structural diagram of the flat oval tube of the utility model;

[0019] Figure 6 for Figure 5 A magnified view of the local structure at point C in the middle;

[0020] In the figure: 101, motor; 102, water outlet seat; 103, main shaft; 104, flat oval tube; 105, pump housing; 106, lower filter; 107, upper filter; 108, positioning ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of the present application.

[0023] It should be noted that similar reference numerals and letters in the following drawings represent similar items, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0024] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second" and the like appear in the description of the present application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] In addition, if the terms "horizontal", "vertical" and the like appear in the description of the present application, they do not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0026] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Embodiment one:

[0028] like Figures 1 to 6 As shown, a single-stage centrifugal pump with a retractable size using a mesh structure includes a water outlet seat 102, a motor 101 is fixedly mounted on the water outlet seat 102, the output end of the motor 101 is fixedly connected to a main shaft 103, and a fixed plate and a pump casing 105 are provided on the main shaft 103 at one end away from the motor 101. The pump casing 105 is fixedly connected to the fixed plate, and a flat oval tube 104 is fixedly connected to the fixed plate. The flat oval tube 104 is also fixedly connected to the water outlet seat 102 to form a water pump conveying channel and discharge liquid. When the underwater size is very long, a connecting plate is also configured. A positioning ring 108 is rotatably connected to the main shaft 103, and the positioning ring 108 is slidably connected to the flat oval tube 104. A lower filter screen 106 and an upper filter screen 107 are fixedly mounted on the positioning ring 108. The lower filter screen 106 is also fixedly mounted on the pump casing 105, and the upper filter screen 107 is also fixedly mounted on the water outlet seat 102. A positioning structure is provided on the fixed plate, and the fixed plate and the positioning structure are arranged to rotate with the main shaft to ensure that the main shaft can run at high speed for a long time without the problem of shaft swing.

[0029] Specifically, the lower filter screen 106 and the upper filter screen 107 are used to replace the traditional bracket, and the water outlet seat 102 and the pump housing 105 are connected and fixed by the lower filter screen 106, the upper filter screen 107 and the positioning ring 108. Customized services can be provided according to the actual situation of the customer, and the main shaft 103 and the flat elliptical tube 104 of different specifications can be selected. The lower filter screen 106 and the upper filter screen 107 can be directly cut, or the lower filter screen 106 or the upper filter screen 107 can be directly removed to adjust the distance between the pump housing 105 and the water outlet seat 102, or more lower filter screens 106 or upper filter screens 107 can be assembled to improve the adaptability of the product, avoid the need to re-open the mold of the bracket when the customer makes adjustments, reduce costs, improve adjustment efficiency, and facilitate use. The filter support structure has brought significant technological progress and economic benefits to the high-speed centrifugal pump, and has broad market application prospects and social value.

[0030] The lower and upper filters 106, 107 are constructed of hard metal, preventing collapse or denting. This ensures the support provided by the lower and upper filters 106, 107, preventing them from denting during use, which could compromise the support provided to the pump's two ends. The hard metal is preferably aluminum alloy, making it easy for customers to cut or stamp the filter into various sizes using simple machining equipment.

[0031] like Figure 3 、 Figure 4 and Figure 6As shown, the lower filter 106 and the upper filter 107 are mounted by bolts. The bolt mounting method makes the installation and removal of the filter more convenient and quick, while ensuring fixity and stability, greatly simplifying the maintenance and adjustment process, and improving the reliability and service life of the product.

[0032] The thickness of the lower filter screen 106 and the upper filter screen 107 is 1 mm to ensure the structural strength and durability during high-speed operation.

[0033] like Figure 4 and Figure 5 As shown, the thickness of the positioning ring 108 is 6 mm, and two 1 mm grooves are provided on the positioning ring 108 for mounting the lower filter 106 and the upper filter 107 to improve the accuracy and stability of the installation.

[0034] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A single-stage centrifugal pump with a retractable size using a mesh structure, comprising a water outlet seat (102), a motor (101) fixedly mounted on the water outlet seat (102), a main shaft (103) fixedly connected to the output end of the motor (101), a fixed plate and a pump housing (105) provided on the main shaft (103) at one end away from the motor (101), the pump housing (105) being fixedly connected to the fixed plate, a flat oval tube (104) fixedly connected to the fixed plate, and the flat oval tube (104) also being fixedly connected to the water outlet seat (102), characterized in that: A positioning ring (108) is rotatably connected to the main shaft (103), and the positioning ring (108) is slidably connected to the flat oval tube (104). A lower filter screen (106) and an upper filter screen (107) are fixedly mounted on the positioning ring (108). The lower filter screen (106) is also fixedly mounted on the pump housing (105), and the upper filter screen (107) is also fixedly mounted on the water outlet seat (102). A positioning structure is provided on the fixed plate, and the fixed plate and the positioning structure are rotatably arranged with the main shaft (103).

2. A single-stage centrifugal pump with a reticulated structure and adjustable dimensions according to claim 1, characterized in that: The lower filter screen (106) and the upper filter screen (107) are made of hard metal and will not collapse or dent.

3. The single-stage centrifugal pump with a reticulated structure and adjustable size according to claim 1, characterized in that: The lower filter screen (106) and the upper filter screen (107) are mounted by bolts.

4. The single-stage centrifugal pump with a reticulated structure and adjustable dimensions according to claim 1, characterized in that: The thickness of the lower filter screen (106) and the upper filter screen (107) is 1 mm.

5. The single-stage centrifugal pump with a reticulated structure and adjustable dimensions according to claim 1, characterized in that: The thickness of the positioning ring (108) is 6 mm, and two 1 mm grooves are provided on the positioning ring (108) for mounting the lower filter (106) and the upper filter (107).

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