An integrated pump casing and power pump

Abstract

The present invention relates to the technical field of water pumps, and in particular to a pump casing and power pump having an integrated type. It comprises a pump casing body, a water inlet pipe is formed on the pump casing body, a chamber for accommodating fluid is formed inside the pump casing body, and the water inlet pipe is connected to the chamber inside the pump casing body; the cavity comprises: a water inlet chamber, one end of which is connected to the water inlet pipe, and the fluid enters the water inlet chamber through the water inlet pipe; a static pressure chamber, which is connected to the water inlet chamber, and the fluid in the water inlet chamber can enter the static pressure chamber; a connecting hole is also provided at one end of the pump casing body, and the connecting hole is used to connect to the motor, so that the motor shaft of the motor and the impeller on the motor shaft can be placed inside the water inlet chamber; when the impeller rotates, it can push the fluid in the water inlet chamber to flow, and allow the fluid to enter the static pressure chamber. This technical solution improves the sealing effect of the entire water pump by forming the common pump body and pump cover into one piece, and further reduces the links in manufacturing and assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, in particular to an integrated pump casing and power pump. Background Art

[0002] Water pumps are a common equipment in industrial production and people's daily life. After a long period of development, according to different working principles and internal structures, water pumps have such a variety of sizes, which can transport fluids with different properties, greatly accelerating the process of human industrialization.

[0003] The current technology has the following shortcomings:

[0004] The pump body and pump cover of a common water pump are usually separated. When assembling the water pump, it is often necessary to provide additional sealing measures at the connection between the pump body and the pump cover to prevent leakage of the internal fluid. Summary of the Invention

[0005] The object of the present invention is to provide an integrated pump casing and a power pump, thereby improving the sealing effect of the pump body and reducing the cost during manufacturing and assembly.

[0006] The purpose of the invention is achieved in this way:

[0007] An integrated pump casing,

[0008] The pump comprises a pump casing body, wherein a water inlet pipe is formed on the pump casing body, a chamber for accommodating a fluid is formed inside the pump casing body, and the water inlet pipe is in communication with the chamber inside the pump casing body;

[0009] The chamber includes:

[0010] a water diversion cavity, one end of which is connected to the water inlet pipe, and the fluid enters the water diversion cavity through the water inlet pipe;

[0011] a static pressure chamber, which is in communication with the water diversion chamber, and the fluid in the water diversion chamber can flow into the static pressure chamber;

[0012] A connecting hole is also provided at one end of the pump casing body, and the connecting hole is used for connecting to the motor so that the motor shaft of the motor and the impeller on the motor shaft can be placed inside the water diversion chamber; when the impeller rotates, it can promote the flow of fluid in the water diversion chamber and allow the fluid to enter the static pressure chamber.

[0013] Preferably, a diffusion tube is formed between the water diversion chamber and the static pressure chamber.

[0014] Preferably, a boss portion is formed in the water diversion cavity;

[0015] The diffusion tube is provided with a reinforcing rib, and the reinforcing rib divides the diffusion tube into a first water outlet and a second water outlet.

[0016] Preferably, the pump casing body is further formed with a shrinkage portion, and the shrinkage portion is located between the water inlet cavity and the water inlet pipe.

[0017] Preferably, a groove is formed in the boss portion.

[0018] A power pump, comprising an integrated pump casing as described above;

[0019] It also includes a driving motor, and an impeller is provided on the motor shaft of the driving motor. The motor shaft and the impeller can be inserted into the water diversion cavity through the connecting hole.

[0020] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0021] 1. This technical solution integrates the common pump body and pump cover into one piece, effectively improving the sealing performance of the water pump.

[0022] 2. Since there is no need to manufacture a matching pump body and pump cover, the one-piece pump body in this technical solution reduces the difficulty in manufacturing, thereby facilitating the manufacture of the pump body; and the absence of a pump cover also reduces the steps in the assembly process, thereby improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the front view of the present invention.

[0024] Figure 2 It is a cross-sectional view of the present invention.

[0025] Figure 3 for Figure 1 Cross-sectional view in the AA direction.

[0026] Figure 4 It is a schematic diagram of the present invention after the impeller is installed.

[0027] Reference numerals: 1, pump casing body; 11, water inlet pipe; 12, connecting hole;

[0028] 2. Water diversion cavity; 21. Boss portion; 22. Groove;

[0029] 3. Static pressure chamber; 31. First water outlet; 32. Second water outlet;

[0030] 4. Diffuser; 5. Reinforcement ribs; 6. Reduced tube; 7. Motor shaft; 8. Impeller; 9. Bearing. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0032] like Figures 1-4 An integrated pump casing shown includes a pump casing body 1 , on which a water inlet pipe 11 is formed. The water inlet pipe 11 is used to connect a pipeline to connect an external water source to the pump casing body 1 .

[0033] The pump housing 1 has a chamber for containing fluid formed inside, and the water inlet pipe 11 is connected to the chamber inside the pump housing 1. Figure 2 The direction pointed by the arrow in the figure is a schematic diagram of the flow direction of the fluid after entering the interior of the pump casing main body 1.

[0034] The chamber includes:

[0035] The water diversion chamber 2 has one end connected to the water inlet pipe 11, and the fluid enters the water diversion chamber 2 through the water inlet pipe 11;

[0036] The static pressure chamber 3 is connected to the water diversion chamber 2 , and the fluid in the water diversion chamber 2 can enter the static pressure chamber 3 .

[0037] One end of the pump housing 1 also has a connection hole 12 for connecting to the electric motor, allowing the motor shaft 7 and the impeller 8 attached thereto to be positioned within the water diversion chamber 2. Once the impeller 8 is installed within the water diversion chamber 2 and the motor shaft 7 is activated, the impeller 8 begins to rotate along with the motor shaft 7. The impeller 8 continuously performs work on the fluid within the water diversion chamber 2, pushing the fluid into the static pressure chamber 3. Once the fluid enters the static pressure chamber 3, the kinetic energy it acquires within the water diversion chamber 2 is gradually converted into static pressure energy.

[0038] The pump housing body 1 in this technical solution adopts an integrated design, which can greatly improve the sealing performance of the pump housing body 1. At the same time, due to the integrated design, there is no need to set up an additional pump cover during manufacturing, so there is no need to process related connection structures, which reduces the manufacturing process. During assembly, there is no need to ensure the accurate connection and sealing effect between the pump cover and the pump body, which is equivalent to reducing the steps in the assembly work and improving the quality of the pump. Figures 1-4 As shown, a diffuser 4 is formed between the water diversion chamber 2 and the static pressure chamber 3. The diameter of the diffuser 4 gradually increases. When the fluid in the water diversion chamber 2 enters the diffuser 4, the expansion of the diameter reduces the flow rate of the fluid while keeping the flow rate constant, as shown in the flow formula Q = Sv. This converts the mechanical energy of the impeller 8 into the static pressure energy of the water.

[0039] like Figures 1-4As shown, a boss portion 21 is formed within the water diversion chamber 2. When the impeller 8 is placed within the water diversion chamber 2, the impeller 8's surface facing the interior of the water diversion chamber 2 approaches the boss portion 21. The boss portion 21 also creates a curved waterway within the water diversion chamber 2. Rotating impeller 8 propels the fluid within diffuser 4 along the curved waterway. When the fluid, pushed by impeller 8, reaches the end of the waterway, it is blocked by the boss portion 21, forcing a large amount of water to flow through diffuser 4 and into static pressure chamber 3.

[0040] Reinforcing ribs 5 are provided within the diffuser 4, dividing it into a first water outlet 31 and a second water outlet 32, thereby forming two flow channels with smaller cross-sectional areas within the diffuser 4. Because the fluid within the water diversion chamber 2 has a higher flow rate and lower pressure, while the fluid within the diffuser 4 and the static pressure chamber 3 has a higher pressure, the centrifugal force generated by the impeller 8 hinders the rapid discharge of the fluid into the static pressure chamber 3. By providing the reinforcing ribs 5, the diffuser 4 is divided into two smaller cross-sectional areas, the first water outlet 31 and the second water outlet 32. The cross-sectional areas of the first water outlet 31 and the second water outlet 32 ​​are smaller than those of the diffuser 4. This reduces the pressure difference between the fluid within the first water outlet 31 and the second water outlet 32 ​​and the fluid within the water diversion chamber 2, making it easier for the fluid within the water diversion chamber 2 to enter the first water outlet 31 and the second water outlet 32 ​​under the impeller 8. The fluid flow rate within the first water outlet 31 and the second water outlet 32 ​​also gradually decreases as the cross-sectional area gradually increases. The water pressure at the first water outlet 31 and the second water outlet 32 ​​is made closer to the water pressure in the water diversion chamber 2, and the liquid in the diffusion tube 4 and the static pressure chamber 3 may be prevented from flowing back, affecting the normal operation of the water pump.

[0041] Furthermore, the cross-sectional area of ​​the inlet of the second water outlet 32 ​​is smaller than that of the inlet of the first water outlet 31. After the impeller 8 drives the fluid through the first water outlet 31, the total amount of fluid that continues to be pushed by the impeller 8 decreases, that is, the flow rate decreases. Therefore, it is necessary to reduce the cross-sectional area through which the fluid passes to maintain a lower pressure of the fluid, so that the remaining liquid can enter the second water outlet 32.

[0042] like Figures 1-4 As shown, the pump housing body 1 is further formed with a constricted portion 6, located between the water diversion chamber 2 and the water inlet pipe 11. This constricted portion 6 makes the diameter of the water channel within the water diversion chamber 2 smaller than that of the water inlet pipe 11, thereby reducing the volume of the water diversion chamber 2 and increasing the flow rate of the liquid entering the pump housing body 1, resulting in a higher flow rate and lower pressure within the water diversion chamber 2. Furthermore, under the action of pressure, the higher-pressure fluid at the water inlet pipe 11 is more easily drawn into the water diversion chamber 2, improving the stability and efficiency of the pump operation.

[0043] like Figures 1-4As shown, a groove 22 is formed in the boss portion 21 , and the groove 22 is used to fix the motor shaft 7 extending into the water diversion cavity 2 and the bearing 9 sleeved on the motor shaft 7 .

[0044] A power pump, comprising the above-mentioned integrated pump casing,

[0045] It also includes a driving motor, and an impeller 8 is provided on the motor shaft 7 of the driving motor. The motor shaft 7 and the impeller 8 can be placed in the water diversion cavity 2 through the connecting hole 12.

[0046] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated pump casing, characterized in that: The pump housing comprises a main body (1), a water inlet pipe (11) is formed on the main body (1), a chamber for accommodating a fluid is formed inside the main body (1), and the water inlet pipe (11) is in communication with the chamber inside the main body (1); The chamber includes: A water diversion chamber (2), one end of which is connected to the water inlet pipe (11), and fluid enters the water diversion chamber (2) through the water inlet pipe (11); a static pressure chamber (3) which is in communication with the water diversion chamber (2), and the fluid in the water diversion chamber (2) can enter the static pressure chamber (3); One end of the pump casing body (1) is further provided with a connection hole (12), and the connection hole (12) is used for connecting with the motor so that the motor shaft (7) of the motor and the impeller (8) on the motor shaft (7) can be placed inside the water diversion chamber (2); When the impeller (8) rotates, it can push the fluid in the water inlet chamber (2) to flow and allow the fluid to enter the static pressure chamber (3); A diffusion tube (4) is formed between the water inlet chamber (2) and the static pressure chamber (3); the diameter of the diffusion tube (4) gradually increases, and the flow rate of the fluid decreases when the flow rate remains unchanged, thereby converting the mechanical energy of the impeller (8) into the static pressure energy of the water; A boss portion (21) is formed in the water diversion cavity (2), and the obstruction of the boss portion (21) forms a curved waterway inside the water diversion cavity (2); A reinforcing rib (5) is provided in the diffusion tube (4), and the reinforcing rib (5) divides the diffusion tube (4) into a first water outlet (31) and a second water outlet (32); the cross-sectional area of ​​the inlet of the second water outlet (32) is smaller than the cross-sectional area of ​​the inlet of the first water outlet (31); The pump casing body (1) is further formed with a reduced tube portion (6), and the reduced tube portion (6) is located between the water inlet chamber (2) and the water inlet pipe (11); the reduced tube portion (6) makes the diameter of the water channel inside the water inlet chamber (2) smaller than that of the water inlet pipe (11); A groove (22) is formed in the boss portion (21); the groove (22) is used to fix the motor shaft (7) extending into the water diversion cavity (2) and the bearing (9) sleeved on the motor shaft (7).

2. A power pump, characterized in that: comprising an integrated pump casing as claimed in claim 1; It also includes a driving motor, and an impeller (8) is provided on the motor shaft (7) of the driving motor. The motor shaft (7) and the impeller (8) can pass through the connecting hole (12) and be placed in the water diversion cavity (2).

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