An integrally provided pump

Abstract

The application relates to a one-piece pump applied to the pump field, which comprises a motor shell, a first pump shell is arranged on the motor shell, a second pump shell is arranged on the first pump shell, and the motor shell, the first pump shell and the second pump shell are integrally arranged. The application has the technical effect that: the integral one-piece design makes the seamless connection between the motor shell, the first pump shell and the second pump shell, eliminates the split connection points, reduces the possibility of water leakage at the connection under the long-term fluid pressure, motor vibration and other actions of the second pump shell, simultaneously reduces the arrangement of the sealing surface, and improves the structural strength and the sealing property of the second pump shell.

Description

Technical Field

[0001] This application relates to the field of pump technology, and in particular to an integrally formed pump. Background Technology

[0002] A pump is a device that uses the pressure difference generated by mechanical motion to transport liquids or gases. It is widely used in water conservancy projects, urban water supply, and household appliances.

[0003] The pump includes a pump casing and a flange. The pump casing includes a motor housing, a pump housing, and a cavity housing. In related technologies, the motor housing, pump housing, and cavity housing are designed as separate units, which are connected as a whole through a V-shaped snap-fit ​​structure in the axial direction.

[0004] The aforementioned motor housing, pump housing, and cavity housing adopt a split structure. During use, the split design requires multiple sealing surfaces to be set between the motor housing, pump housing, and cavity housing. Furthermore, the mechanical rigidity is relatively poor, and long-term exposure to fluid pressure and motor vibration can easily lead to water leakage at the connection points, resulting in a deterioration in the overall sealing performance of the pump. Summary of the Invention

[0005] To address the problems in related technologies where split-type structures require multiple sealing surfaces between the motor housing, pump housing, and cavity housing, resulting in poor mechanical rigidity and easy leakage at the connections due to long-term fluid pressure and motor vibration, thus deteriorating the overall sealing performance of the pump, this application provides an integrated pump with the following technical solution: It includes a motor housing, a first pump housing mounted on the motor housing, and a second pump housing mounted on the first pump housing. The motor housing, the first pump housing, and the second pump housing are integrally formed, and a water outlet pipe is disposed between the first pump housing and the second pump housing.

[0006] In one specific implementation, the diameter of the second pump housing is larger than that of the first pump housing, and the second pump housing and the first pump housing are eccentrically arranged. The second pump housing and the first pump housing are connected by a transition section. A flow guide shroud is provided inside the first pump housing, and a flow guide surface is provided on the flow guide shroud. The end of the flow guide surface near the water outlet pipe is lower than the transition section, and the end of the flow guide surface away from the water outlet pipe is flush with the transition section.

[0007] In one specific implementation, the transition section is provided with a positioning block, the flow guide is provided with a positioning plate, and the end face of the positioning plate facing the transition section contacts the positioning block.

[0008] In one specific implementation, the transition section has a guide slope at the end facing the outlet pipe.

[0009] In one specific implementation, the second pump housing is connected to a flange via a snap-fit ​​unit, the snap-fit ​​unit including a first snap-fit ​​component and a second snap-fit ​​component. When the second pump housing and the flange are connected via the first snap-fit ​​component, the second pump housing and the flange are in a first snap-fit ​​state; when the second pump housing and the flange are connected sequentially via the first snap-fit ​​component and the second snap-fit ​​component, the second pump housing and the flange are in a second snap-fit ​​state.

[0010] In one specific implementation, the first clamping assembly includes a first clamping portion and a first clamping block that mates with the first clamping portion, one of the second pump housings or flanges is provided with the first clamping portion, and the other is provided with the first clamping block; the second clamping assembly includes a second clamping portion and a second clamping block that mates with the second clamping portion, one of the second pump housings or flanges is provided with the second clamping portion, and the other is provided with the second clamping block.

[0011] In one specific implementation, the second snap-fit ​​portion includes at least one first limiting block disposed on the second pump housing or the flange, and the second snap-fit ​​block includes a limiting plate disposed on the other; when the second pump housing and the flange are in the second snap-fit ​​state, the first limiting block abuts against the limiting plate.

[0012] In one specific implementation, the inner edge of the second pump housing is provided with a placement groove, and a sealing ring matching the placement groove is provided in the placement groove. The sealing ring is pressed against the flange and the second pump housing.

[0013] In one specific implementation, the first pump housing and / or the second pump housing are provided with reinforcing ribs.

[0014] In one specific implementation, the motor housing, the first pump housing, and the second pump housing are made of plastic resin material.

[0015] In summary, this application has the following beneficial technical effects: the integrated molding design allows for seamless connection between the motor housing, the first pump housing, and the second pump housing, eliminating separate connection points and reducing the possibility of water leakage at the connection points under long-term fluid pressure and motor vibration. At the same time, it reduces the number of sealing surfaces and improves the structural strength and sealing performance of the pump body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0017] Figure 2 This is a schematic diagram illustrating the structure of the guide slope in the embodiments of this application.

[0018] Figure 3This is a schematic diagram illustrating the structure of the fairing in the embodiments of this application.

[0019] Figure 4 This is a structural schematic diagram illustrating the flange in the embodiments of this application.

[0020] Figure 5 yes Figure 4 Enlarged diagram of point A in the middle.

[0021] Reference numerals in the attached drawings: 1. Motor housing; 2. First pump housing; 3. Second pump housing; 4. Transition section; 5. Flow guide shroud; 6. Flow guide surface; 7. Positioning block; 8. Positioning plate; 9. Flow guide slope; 10. Placement groove; 11. Flange; 12. First limiting block; 13. Limiting plate; 14. Second limiting block; 15. First limiting hole. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0023] This application discloses an integrated pump.

[0024] Reference Figure 1 and Figure 2 The pump, which is integrally formed, includes a motor housing 1, a first pump housing 2 mounted on the motor housing 1, and a second pump housing 3 mounted on the first pump housing 2. The motor housing 1, the first pump housing 2, and the second pump housing 3 are integrally formed, and the water outlet pipe is located between the first pump housing 2 and the second pump housing 3. The motor housing 1, the first pump housing 2, and the second pump housing 3 are made of plastic resin material. In this embodiment, they are specifically made of MPBT-RG30 material. MPBT-RG30 is a high-performance PBT engineering plastic that is 30% glass fiber reinforced and modified with flame retardancy. It balances mechanical strength, heat resistance, flame retardancy, and electrical insulation, and has good fire resistance and high temperature resistance.

[0025] Reference Figure 2 , Figure 3 and Figure 4 The second pump housing 3 is connected to a flange 11 via a snap-fit ​​unit. The water inlet pipe is mounted on the flange 11, which is used to seal the opening of the second pump housing 3. In this embodiment, a reinforcing rib is provided between the first pump housing 2 and the motor housing 1. By increasing the cross-sectional area between the first pump housing 2 and the motor housing 1, the reinforcing rib effectively improves the overall rigidity and bending strength of the first pump housing 2 and the motor housing 1, reducing the risk of deformation caused by vibration, torque, or external loads.

[0026] Reference Figure 1 and Figure 2The diameter of the second pump housing 3 is larger than that of the first pump housing 2, and the second pump housing 3 and the first pump housing 2 are eccentrically arranged. The second pump housing 3 and the first pump housing 2 are connected by a transition portion 4. A flow guide shroud 5 is provided inside the first pump housing 2. In this embodiment, the flow guide shroud 5 can be made of a plastic resin material with good fire resistance and high temperature resistance. Specifically, it can be referred to that the motor housing 1, the first pump housing 2, and the second pump housing 3 are made of MPBT-RG30 material. An opening is provided on the flow guide shroud 5, and a flow guide cavity is formed between the flow guide shroud 5 and the first pump housing 2. Water flows into the flow guide cavity from the inlet pipe, and then the water flows from the opening of the flow guide shroud 5 to the outlet pipe. A flow guide surface 6 is provided on the flow guide shroud 5. The end of the flow guide surface 6 near the outlet pipe is lower than the transition portion 4, and the end of the flow guide surface 6 away from the outlet pipe is flush with the transition portion 4.

[0027] Therefore, most of the water flows from the opening of the guide shroud 5 to the outlet pipe, and a small portion of the water that does not flow into the outlet pipe will flow along the guide surface 6 to the end face of the transition section 4 and the guide shroud 5 facing the inlet pipe. The guide surface 6 guides the direction of the water flow.

[0028] Reference Figure 2 and Figure 3 A positioning block 7 is provided on the transition section 4, and a positioning plate 8 is fixedly connected to the flow guide shroud 5. In this embodiment, the end face of the positioning plate 8 facing the water inlet pipe is higher than the end face of the transition section 4 facing the water inlet pipe, and the end face of the positioning plate 8 facing the transition section 4 is in contact with the positioning block 7. A flow guide slope 9 is provided at one end of the transition section 4 facing the water outlet pipe. The flow guide slope 9 corresponds to the liquid inlet end of the water outlet pipe and guides the flow direction of the water flow, facilitating the smooth flow of water into the water outlet pipe. Therefore, when it is necessary to assemble the flow guide shroud 5 into the first pump housing 2, the end face of the positioning plate 8 facing the transition section 4 is brought into contact with the positioning block 7, thereby realizing the quick positioning and assembly of the flow guide shroud 5, which makes it easy for the operator to know the assembly position of the flow guide shroud 5 in a timely manner. At the same time, the positioning plate 8 limits the flow direction of part of the water flow. When the water flow hits the positioning plate 8 during the flow process, the positioning plate 8 provides a force to the water flow, causing the water flow in the deviated direction to flow back into the water outlet pipe.

[0029] Reference Figure 2 and Figure 3 The inner edge of the second pump casing 3 is provided with a placement groove 10, and a sealing ring matching the size of the placement groove 10 is installed in the placement groove 10. The sealing ring is pressed against the flange 11 and the second pump casing 3. When the pump is working, a certain pressure is generated inside, and water will try to flow out from various possible gaps under the action of pressure. However, by pressing against the flange 11 and the second pump casing 3, the sealing ring forms a tight sealing interface, effectively blocking the water flow and ensuring that the water can only flow in the normal channel of the pump, thus ensuring the working efficiency and performance of the pump.

[0030] In related technologies, the motor housing 1, pump housing, and cavity housing are designed as separate units, connected axially as a whole by a V-shaped snap-fit ​​structure. The separate design requires sealing rings to be installed between the motor housing 1 and the pump housing, as well as between the pump housing and the cavity housing. However, in this embodiment, only one sealing ring is needed between the flange 11 and the second pump housing 3 to achieve sealing, reducing potential leakage points and improving the sealing reliability of the entire pump system. At the same time, reducing the use of sealing rings can save internal space in the pump, providing more room for the arrangement of other components, which helps to optimize the internal structure of the pump.

[0031] Reference Figure 4 and Figure 5 The snap-fit ​​unit includes a first snap-fit ​​assembly and a second snap-fit ​​assembly. When the second pump housing 3 and the flange 11 are connected through the first snap-fit ​​assembly, the second pump housing 3 and the flange 11 are in a first snap-fit ​​state. When the second pump housing 3 and the flange 11 are connected sequentially through the first snap-fit ​​assembly and the second snap-fit ​​assembly, the second pump housing 3 and the flange 11 are in a second snap-fit ​​state. The first snap-fit ​​assembly includes a first snap-fit ​​part and a first snap-fit ​​block that mates with the first snap-fit ​​part. One of the second pump housing 3 or the flange 11 is provided with the first snap-fit ​​part, and the other is provided with the first snap-fit ​​block. The second snap-fit ​​assembly includes a second snap-fit ​​part and a second snap-fit ​​block that mates with the second snap-fit ​​part. One of the second pump housing 3 or the flange 11 is provided with the second snap-fit ​​part, and the other is provided with the second snap-fit ​​block.

[0032] In this application embodiment, the first snap-fit ​​portion can be a groove or a hole; in this application embodiment one, a hole is used as an example for description. The second snap-fit ​​portion includes at least one first limiting block 12 disposed on the second pump housing 3 or flange 11, and the second snap-fit ​​block includes at least one limiting plate 13 disposed on the other. In this embodiment, the number of first limiting blocks 12 is set to two, and both first limiting blocks 12 are set on the flange 11. The number of limiting plates 13 is set to two, and both limiting plates 13 are set on the second pump housing 3. The first snap-fit ​​part includes a first limiting hole 15 opened on the flange 11. The first snap-fit ​​block includes a second limiting block 14 set on the second pump housing 3. The two limiting plates 13 are located on both sides of the second limiting block 14. The second limiting block 14 passes through the first limiting hole 15. In this embodiment, the second limiting block 14 is provided with a guide slope, which plays a guiding role and facilitates the smooth insertion of the second limiting block 14 into the first limiting hole 15. When the second pump housing 3 and the flange 11 are in the second snap-fit ​​state, the two limiting plates 13 abut against the first limiting blocks 12 respectively. In this embodiment, the clamping direction of the first clamping component is the same as the axial direction of the second pump housing 3. Specifically, when the second limiting block 14 passes through the first limiting hole 15, the direction of the clamping process between the second limiting block 14 and the first limiting hole 15 is the axial direction of the second pump housing 3. In this embodiment, the flange 11 and the first limiting block 12 on the flange 11 are made of stainless steel. Stainless steel has high strength and durability, and also has a certain deformation capacity.

[0033] The operator inserts the second limiting block 14 into the first limiting hole 15, so that the second pump housing 3 and the flange 11 are in the first snap-fit ​​state. At this time, the second pump housing 3 and the flange 11 are initially connected. When the second pump housing 3 needs to be inspected, it is convenient for the operator to reassemble and disassemble the pump during subsequent inspections. When the pump is inspected and the second pump housing 3 and the flange 11 need to be locked and assembled, the operator first inserts the second limiting block 14 into the first limiting hole 15 to achieve the initial connection between the second pump housing 3 and the flange 11. Then, the operator pries the two first limiting blocks 12 outward, that is, pries the first limiting blocks 12 toward the limiting plate 13, so that the two limiting plates 13 abut against the first limiting blocks 12 respectively, thereby achieving the locking and fixing between the second pump housing 3 and the flange 11.

[0034] Compared to the unidirectional limiting connection method used in related technologies between the second pump housing 3 and the flange 11, this application reduces the occurrence of axial disengagement by utilizing the dual limiting of the first and second clamping components, thus reducing the possibility of loosening or unstable connection between the second pump housing 3 and the flange 11 during use. Furthermore, the unidirectional one-time clamping design in the prior art is prone to breakage or damage during loading and unloading, and repeated clamping can cause wear on the clamping blocks and grooves, leading to unstable connection between the second pump housing 3 and the flange 11. In this embodiment, by adding a second clamping component, even if the first clamping component wears during use, the second clamping component provides axial limiting between the flange 11 and the second pump housing 3. This reduces the possibility of wear on the existing clamping components caused by repeated tightening during testing, while simultaneously improving the tightness of the fit between the second pump housing 3 and the flange 11, thus enhancing the pump's sealing performance.

[0035] The implementation principle of this application embodiment is as follows: an integral molding design is adopted, which makes the motor housing 1, the first pump housing 2 and the second pump housing 3 seamlessly connected, eliminating the separate connection points, reducing the possibility of water leakage at the connection point under the long-term action of fluid pressure, motor vibration and other effects on the pump body, and at the same time reducing the number of sealing surfaces, improving the structural strength and sealing performance of the pump body.

[0036] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A pump that is integrally formed, characterized in that: It includes a motor housing (1), a first pump housing (2) is provided on the motor housing (1), a second pump housing (3) is provided on the first pump housing (2), the motor housing (1), the first pump housing (2) and the second pump housing (3) are integrally formed, and a water outlet pipe is provided between the first pump housing (2) and the second pump housing (3).

2. The pump integrated according to claim 1, characterized in that: The diameter of the second pump housing (3) is larger than that of the first pump housing (2), and the second pump housing (3) and the first pump housing (2) are eccentrically arranged. The second pump housing (3) and the first pump housing (2) are connected by a transition part (4). The first pump housing (2) is provided with a flow guide shroud (5), and the flow guide shroud (5) is provided with a flow guide surface (6). The end of the flow guide surface (6) near the water outlet pipe is lower than the transition part (4), and the end of the flow guide surface (6) away from the water outlet pipe is flush with the transition part (4).

3. The pump integrated according to claim 2, characterized in that: The transition section (4) is provided with a positioning block (7), and the flow guide (5) is provided with a positioning plate (8). The end face of the positioning plate (8) facing the transition section (4) is in contact with the positioning block (7).

4. The pump integrated according to claim 2, characterized in that: The transition section (4) has a guide slope (9) at one end facing the water outlet pipe.

5. The pump integrated according to claim 1, characterized in that: The second pump housing (3) is connected to the flange (11) via a snap-fit ​​unit. The snap-fit ​​unit includes a first snap-fit ​​component and a second snap-fit ​​component. When the second pump housing (3) and the flange (11) are connected via the first snap-fit ​​component, the second pump housing (3) and the flange (11) are in a first snap-fit ​​state. When the second pump housing (3) and the flange (11) are connected sequentially via the first snap-fit ​​component and the second snap-fit ​​component, the second pump housing (3) and the flange (11) are in a second snap-fit ​​state.

6. The pump integrated according to claim 5, characterized in that: The first clamping assembly includes a first clamping part and a first clamping block that mates with the first clamping part. The first clamping part is provided on one of the second pump housing (3) or the flange (11), and the first clamping block is provided on the other. The second clamping assembly includes a second clamping part and a second clamping block that mates with the second clamping part. The second clamping part is provided on one of the second pump housing (3) or the flange (11), and the second clamping block is provided on the other.

7. The pump integrally formed according to claim 6, characterized in that: The second snap-fit ​​portion includes at least one first limiting block (12) disposed on the second pump housing (3) or the flange (11), and the second snap-fit ​​block includes a limiting plate (13) disposed on the other; when the second pump housing (3) and the flange (11) are in the second snap-fit ​​state, the first limiting block (12) abuts against the limiting plate (13).

8. The pump integrated according to claim 5, characterized in that: The inner edge of the second pump housing (3) is provided with a placement groove (10), and a sealing ring matching the placement groove (10) is provided in the placement groove (10). The sealing ring is pressed between the flange (11) and the second pump housing (3).

9. The pump integrally formed according to claim 1, characterized in that: The first pump housing (2) and / or the second pump housing (3) are provided with reinforcing ribs.

10. The pump integrally formed according to claim 1, characterized in that: The motor housing (1), the first pump housing (2), and the second pump housing (3) are made of plastic resin material.

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