Variable combined type self-priming centrifugal pump

Abstract

A variable combined type self-priming centrifugal pump, comprising a pump body (1); the side wall of the pump body (1) is provided with a water inlet (11), and the top of the pump body (1) is provided with a water outlet (12); a side cover (2) is provided with an impeller (3), and a volute casing (4) is sleeved on the impeller (3); a water inlet elbow (5) is arranged inside the pump body (1), the water inlet elbow (5) comprises a fixed plate (51), and a water inlet part (52) and a water outlet part (53) are arranged on the fixed plate (51), the water inlet part (52) being communicated the water outlet part (53); the fixed plate (51) is provided with an inlet (512), the inlet (512) is communicated with the water inlet (11), and the end of the water outlet part (53) is provided with an outlet (531) which is communicated with the volute casing (4).

Description

Multi-variable combined self-priming centrifugal pump TECHNICAL FIELD The utility model relates to a centrifugal pump, especially to a multi-variable combined self-priming centrifugal pump. BACKGROUND The self-priming centrifugal pump is a general water pump, which is internally provided with an impeller and a volute, and the impeller can rotate in the volute. Through the rotation of the impeller, fluid is sucked in and discharged from the volute, and the hydraulic performance flow head is determined by the size of the impeller, the pump body and the rotational speed given by the driving machine. The existing self-priming centrifugal pump structure is generally integrally die-cast by casting or aluminum alloy, which has a complex structure and is difficult to form, and the aluminum alloy material has low pressure resistance, so that the pump body is prone to bulging, and corrosion and oxidation may occur after long-term use, thereby affecting the service life of the pump. SUMMARY The utility model provides a more durable, multi-variable combined self-priming centrifugal pump with variable performance parameters. The utility model adopts the technical scheme that the multi-variable combined self-priming centrifugal pump comprises a pump body, the side of the pump body is connected with a side cover, a water inlet is formed in the side wall of the pump body, a water outlet is formed in the top of the pump body, an impeller is arranged in the pump body on the side cover, a volute is sleeved on the impeller, a water inlet elbow is arranged in the pump body, the water inlet elbow comprises a fixed plate, the fixed plate is detachably connected with the pump body, a water inlet part and a water outlet part are integrally arranged on the fixed plate, the water inlet part and the water outlet part are communicated, an inlet is formed in the fixed plate and communicated with the water inlet part, the inlet is communicated with the water inlet, an outlet is formed in the end of the water outlet part and communicated with the volute, water enters from the water inlet, then passes through the inlet, the water inlet part, the water outlet part and the outlet in sequence, and finally is discharged into the pump body from the volute, and the size of each component is determined by the performance parameters required by the pump. Further preferred scheme of the utility model is that a plurality of bolt holes are arranged on the fixed plate, and the fixed plate is tightly arranged on the inner wall of the pump body and fixed with the pump body through bolts. Further preferred scheme of the utility model is that a flap valve is arranged between the water inlet and the inlet on the pump body, the flap valve is rotationally connected with the pump body, and the flap valve is used for controlling the opening and closing of the water inlet and the inlet. Further preferred scheme of the utility model is that a drain port is further formed in the side wall of the pump body, and a drain hole corresponding to the drain port is formed in the fixed plate. The further preferred scheme of the utility model is: the center of the volute is provided with a connecting pipe, the connecting pipe is inserted in the water outlet part and is communicated with the water outlet part. The further preferred scheme of the utility model is: the volute is provided with a positioning plate, a slot is formed between the positioning plate and the side wall of the connecting pipe, the water outlet part is inserted in the slot, and a positioning plane that is attached to the positioning plate is further arranged on the outer wall of the water outlet part. The further preferred scheme of the utility model is: the top of the pump body is provided with a water outlet elbow, the water outlet elbow is communicated with the water outlet, and the water outlet elbow is detachably connected with the pump body. The further preferred scheme of the utility model is: a water guide hole that is communicated with the inside of the water outlet elbow is formed on the water outlet elbow, water can enter from the water guide hole and then enter the pump body through the water outlet elbow. The further preferred scheme of the utility model is: the material of the pump body and the water inlet elbow is stainless steel. Compared with the prior art, the utility model has the advantages that the water inlet elbow is arranged in the pump body, the water inlet elbow comprises a fixed plate, the fixed plate is detachably connected with the pump body, the fixed plate is integrally provided with a water inlet part and a water outlet part, the water inlet part is communicated with the water outlet part, an inlet that is communicated with the water inlet part is formed on the fixed plate, the inlet is communicated with the water inlet, the water inlet elbow and the pump body adopt a split structure, different sizes of water inlet elbows can be replaced according to actual use requirements, meanwhile, the fixed plate has the effect of reinforcing ribs on the pump body, preventing the pump body from being bulged, the pump body adopts a stainless steel structure, is more corrosion-resistant and more durable, in the production and manufacturing aspect, the least amount of casting molds can be used to produce more specifications of pump types, and a large amount of production and manufacturing costs can be reduced. BRIEF DESCRIPTION OF DRAWINGS The utility model will be further described in detail below by combining with the drawings and preferred embodiments, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be regarded as the limitation on the scope of the utility model. In addition, unless specifically pointed out, the drawings only schematically show the composition or structure of the described objects and can contain exaggerated display, and the drawings are not necessarily drawn to scale. Fig. 1 is a structural schematic view of the preferred embodiment of the utility model; Fig. 2 is a sectional view of Fig. 1; Fig. 3 is an explosion view of Fig. 1; Fig. 4 is a schematic view one of the water inlet elbow in the preferred embodiment of the utility model; Fig. 5 is a schematic view two of the water inlet elbow in the preferred embodiment of the utility model; Figure 6 is a schematic diagram of the volute in the preferred embodiment of the present application. In the figure: 1, pump body; 11, water inlet; 12, water outlet; 13, drain; 14, flap; 2, side cover; 3, impeller; 4, volute; 41, connecting pipe; 42, positioning plate; 43, slot; 5, water inlet elbow; 51, fixed plate; 511, bolt hole; 512, inlet; 513, drain hole; 52, water inlet part; 53, water outlet part; 531, outlet; 532, positioning plane; 6, water outlet elbow; 61, water inlet hole. DETAILED DESCRIPTION The preferred embodiment of the present application will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive, exemplary, and should not be interpreted as limiting the scope of protection of the present application.

[0024] It should be noted that similar reference numerals represent similar items in the following drawings, so once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings. The variable combination type self-priming centrifugal pump comprises a pump body 1, a side cover 2 is connected to the side of the pump body 1, the pump body 1 and the side cover 2 are fixedly connected by bolts, and the pump body 1 and the side cover 2 are made of stainless steel, which is more corrosion-resistant and has a longer service life. A water inlet 11 is formed in the side wall of the pump body 1, the water inlet 11 is connected to a water pipe, the other end of the water pipe is placed in water, and water enters the pump body 1 from the water inlet 11 through the water pipe. A water outlet 12 is formed in the top of the pump body 1, and water in the pump body 1 is discharged through the water outlet 12. An impeller 3 is arranged in the interior of the pump body 1 on the side cover 2, a volute 4 is sleeved on the impeller 3, the impeller 3 is driven to rotate by a driving member, the driving member can be a common driving device such as a motor, the impeller 3 rotates in the volute 4, and fluid is sucked into the volute 4 and discharged therefrom through the rotation of the impeller 3. The volute 4 is fixed in the pump body 1, and the outlet of the volute 4 always faces the direction of the water outlet 12. A water inlet elbow 5 is arranged in the pump body 1, the material of the water inlet elbow 5 is stainless steel, the water inlet elbow 5 comprises a fixed plate 51, the fixed plate 51 is detachably connected to the pump body 1, further, a plurality of bolt holes 511 are formed in the fixed plate 51, the fixed plate 51 is tightly attached to the inner wall of the pump body 1 and is fixed to the pump body 1 by bolts, different sizes of water inlet elbows 5 can be replaced according to actual use requirements, and the fixed plate 51 has the effect of reinforcing ribs on the pump body 1, so as to prevent the pump body 1 from being damaged due to bulging. The fixed plate 51 integrally extends the water inlet portion 52 and the water outlet portion 53, the water inlet portion 52 is communicated with the water outlet portion 53, the fixed plate 51 is provided with an inlet 512 communicated with the water inlet portion 52, and the inlet 512 is communicated with the water inlet 11, and the end of the water outlet portion 53 is provided with an outlet 531 communicated with the volute 4. Water enters from the water inlet 11, then passes through the inlet 512, the water inlet portion 52, the water outlet portion 53 and the outlet 531 in turn, and finally is discharged into the pump body 1 from the volute 4. The sidewall of the pump body 1 is also provided with a drain 13, and the fixed plate 51 is provided with a drain hole 513 corresponding to the drain 13, and the water in the pump body 1 can be discharged from the drain hole 513 when use is finished. The pump body 1 is provided with a flap 14 between the water inlet 11 and the inlet 512, the flap 14 is rotatably connected to the pump body 1, the flap 14 is used to control the opening and closing of the water inlet 52 and the inlet 512, and the flap 14 is opened when negative pressure is formed at the inlet of the volute 4. The center of the volute 4 is provided with a connecting pipe 41, the connecting pipe 41 is inserted into the water outlet portion 53 and communicated with the water outlet portion 53, further, the volute 4 is provided with a positioning plate 42, the positioning plate 42 and the sidewall of the connecting pipe 41 form a slot 43, the water outlet portion 53 is inserted into the slot 43, and the outer wall of the water outlet portion 53 is further provided with a positioning plane 532 abutting with the positioning plate 42, the positioning plane 532 abuts with the positioning plate 42, and the volute 4 is positioned, so that the outlet of the volute 4 always faces the water outlet 12, and the user can ensure that the outlet of the volute 4 faces the water outlet 12 during assembly, and the correct installation is ensured. The top of the pump body 1 is provided with a water outlet elbow 6, the water outlet elbow 6 is communicated with the water outlet 12, and the water outlet elbow 6 is detachably connected with the pump body 1, so that the direction of the water outlet elbow 6 can be changed according to the actual use, and the use is convenient. Further, the water outlet elbow 6 is provided with a water inlet hole 61 communicated with the inside of the water outlet elbow 6, water can enter from the water inlet hole, and then enter the pump body 1 through the water outlet elbow 6. Before the pump is started, the pump body 1 is filled with an appropriate amount of liquid through the water inlet hole 61, the water inlet hole 61 is blocked after the liquid is filled, the motor is started, the impeller 3 rotates, the negative pressure is formed at the inlet of the volute 4, the flap 14 is opened, the gas enters the volute 4, and the gas is mixed with the liquid rotating at high speed at the outlet of the volute 4, and the gas is discharged from the pump body 1 due to the different specific gravity of the liquid and the gas, and the liquid returns to the outer edge of the impeller 3, and the cycle is repeated until the gas in the pump body 1 is discharged, and the self-priming process of the pump is completed to achieve normal work. In the description of the utility model, it needs to explain, the term "upper", "lower", "front", "rear", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, or is the orientation or position relation of the utility model product when using the usual placement, just is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply the device or element must have a particular orientation, with a particular orientation structure and operation, therefore can not be understood as the limitation of the utility model. The multi-change combined self-priming centrifugal pump provided by the utility model is described in detail above, the principle and implementation mode of the utility model are described in this paper by applying specific examples, and the above embodiment is only used for helping to understand the utility model and core idea. It should be pointed out that for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A variable combination self-priming centrifugal pump comprising a pump body, a side cover connected to the side of the pump body, a water inlet formed on the side wall of the pump body, a water outlet formed on the top of the pump body, an impeller disposed on the side cover within the pump body, a volute disposed over the impeller, and characterized in that: The pump body is provided with a water inlet elbow, the water inlet elbow comprises a fixed plate which is detachably connected with the pump body, the fixed plate integrally extends a water inlet portion and a water outlet portion, the water inlet portion communicates with the water outlet portion, an inlet is formed in the fixed plate and communicates with the water inlet portion, the inlet communicates with the water inlet, an outlet is formed in the end of the water outlet portion and communicates with the volute, water enters from the water inlet, then sequentially passes through the inlet, the water inlet portion, the water outlet portion and the outlet, and finally is discharged from the volute into the pump body.

2. The multi-variable modular self-priming centrifugal pump according to claim 1, characterized in that: A plurality of bolt holes are formed in the fixed plate, the fixed plate is tightly attached to the inner wall of the pump body and is fixed to the pump body by bolts.

3. The multi-variable modular self-priming centrifugal pump according to claim 1, characterized in that: A flap valve is arranged between the water inlet and the inlet on the pump body, the flap valve is rotatably connected to the pump body, and the flap valve is used to control the opening and closing of the water inlet and the inlet.

4. The multi-variable modular self-priming centrifugal pump according to claim 1, characterized in that: A drain port is further formed in the side wall of the pump body, and a drain hole corresponding to the drain port is formed in the fixed plate.

5. The multi-variable modular self-priming centrifugal pump according to claim 1, characterized in that: A connecting pipe is arranged at the center of the volute, the connecting pipe is inserted into the water outlet portion and communicates with the water outlet portion.

6. The multi-variable modular self-priming centrifugal pump according to claim 5, characterized in that: A positioning plate is arranged on the volute and extends therefrom, an insertion slot is formed between the side wall of the connecting pipe and the positioning plate, the water outlet portion is inserted into the insertion slot, and a positioning plane which is fitted with the positioning plate is further arranged on the outer wall of the water outlet portion.

7. The multi-variable combination self-priming centrifugal pump according to claim 1, characterized in that: A water outlet elbow is arranged on the top of the pump body, the water outlet elbow communicates with the water outlet, and the water outlet elbow is detachably connected with the pump body.

8. The multi-variable modular self-priming centrifugal pump according to claim 7, characterized in that: An inlet hole which communicates with the inside of the water outlet elbow is formed in the water outlet elbow, water can enter from the inlet hole and then enter the pump body through the water outlet elbow.

9. The multi-variable modular self-priming centrifugal pump according to claim 1, characterized in that: The pump body and the water inlet elbow are made of stainless steel.

Images