A diaphragm pump and its inlet pressure stabilizing structure

Abstract

This invention provides a diaphragm pump and its inlet pressure stabilizing structure. The invention includes an inlet pressure stabilizing base and an inlet pressure stabilizing diaphragm. The inlet pressure stabilizing base has a water inlet, a water outlet, and a pressure stabilizing port, which are interconnected. The water outlet is connected to the water inlet of the pump head. The inlet pressure stabilizing diaphragm is made of elastic material and is sealed and installed in the pressure stabilizing port to form a closed pressure stabilizing chamber. The inlet pressure stabilizing diaphragm can deform with changes in inlet water pressure and balance inlet pressure fluctuations by adjusting the volume of the closed pressure stabilizing chamber, thus stabilizing the inlet water pressure. This structure significantly improves the connection stability of the inlet pipeline, effectively suppresses pipeline vibration, reduces the risk of loosening and leakage at connections, and significantly enhances the overall reliability and stability of the pump operation.

Description

Technical Field

[0001] This utility model relates to water pumps, and more particularly to a diaphragm pump and its inlet pressure stabilizing structure. Background Technology

[0002] As a general-purpose fluid transport device that converts electrical energy into fluid kinetic energy, a water pump typically consists of two main components: the pump head and the pump body. The pump head integrates an inlet and an outlet, while the pump body contains a built-in power unit that provides driving force for the fluid inside the pump head, enabling the water to flow in from the inlet, be pressurized by the pump head, and then be ejected from the outlet.

[0003] In practical applications, since the pressure of the water jet from the outlet is usually high, in order to avoid the impact of water pressure fluctuations on the stability of the delivery and the downstream pipeline, existing technologies generally install a water pressure stabilizing structure at the outlet of the pump head to effectively regulate the water flow pressure at the outlet.

[0004] However, existing water pumps typically lack any pressure-stabilizing structure at the inlet, simply connecting directly to the inlet pipe. During pump operation, the internal power components create negative pressure at the inlet. This negative pressure causes severe vibration in the inlet pipe, resulting in significant operating noise and affecting the stability of the inlet pipe connections. Prolonged vibration can even lead to loosening and leakage at pipe connections, ultimately reducing the overall reliability of the pump and necessitating further improvements. Utility Model Content

[0005] In view of this, the first objective of this utility model is to provide a water inlet pressure stabilizing structure that can achieve an effective water inlet pressure stabilization effect.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: A water inlet pressure stabilizing structure includes a water inlet pressure stabilizing base and a water inlet pressure stabilizing diaphragm. The water inlet pressure stabilizing base is provided with a water inlet, a water outlet, and a water pressure stabilizing port. The water inlet, the water outlet, and the water pressure stabilizing port are interconnected. The water outlet is used to connect to the water inlet of a pump head. The water inlet pressure stabilizing diaphragm is made of elastic material and is sealed and installed on the water pressure stabilizing port to form a closed pressure stabilizing cavity. The water inlet pressure stabilizing diaphragm can deform with changes in water inlet pressure and balance water inlet pressure fluctuations by adjusting the volume of the closed pressure stabilizing cavity, thereby stabilizing the water inlet pressure.

[0007] Through the above technical solution, water enters through the water inlet, creating a negative pressure environment within the sealed pressure-stabilizing chamber. The inlet pressure-stabilizing diaphragm adjusts the volume of the sealed pressure-stabilizing chamber through adaptive deformation, precisely balancing pressure fluctuations and ensuring stable inlet water pressure. Simultaneously, the stable pressure environment significantly improves the connection stability of the inlet pipeline, effectively suppressing pipeline vibration, reducing the risk of loosening and leakage at connections, and significantly enhancing the overall reliability and stability of the water pump operation.

[0008] Preferably, it also includes a water flow pressure stabilizing head, which is disposed at the water flow pressure stabilizing port of the water inlet pressure stabilizing base. The end of the water flow pressure stabilizing head is provided with an installation port. The sealed pressure stabilizing cavity is located inside the water flow pressure stabilizing head, and the water inlet pressure stabilizing diaphragm is sealed and installed at the installation port.

[0009] Through the above technical solution, the water flow pressure stabilizing head can effectively increase the overall chamber area of ​​the sealed pressure stabilizing cavity, which not only provides sufficient installation area for the water inlet pressure stabilizing diaphragm, but also improves the adjustment range of the water inlet pressure stabilizing diaphragm on the chamber volume of the sealed pressure stabilizing cavity, thereby further improving the water inlet pressure stabilizing capability.

[0010] Preferably, the inlet pressure stabilizing diaphragm includes a deformable portion located in the middle and a fixed portion located at the edge; It also includes a fixing component, wherein the deformable part covers the mounting port, and the fixing component fits and fixes the fixing part to the outside of the water flow pressure stabilizing head.

[0011] Through the above technical solution, the deformation part can receive the water pressure inside the sealed pressure stabilizing chamber to the greatest extent, and thus sensitively adjust its own deformation; the fixing part can improve the installation stability between the water inlet pressure stabilizing diaphragm and the water flow pressure stabilizing head.

[0012] Preferably, the fastener includes a clamp.

[0013] With the above technical solution, the clamp can stably fix the fixing part to the outside of the water flow pressure stabilizing head; when the water inlet pressure stabilizing diaphragm needs to be replaced, the clamp can be loosened to remove the water inlet pressure stabilizing diaphragm from the water flow pressure stabilizing head, which is highly convenient for disassembly and assembly.

[0014] Preferably, the water flow pressure stabilizing head has an installation protrusion on the outer wall of the mounting port, and an installation groove is provided between the fixing part and the deformation part, with the installation protrusion and the installation groove fitting together.

[0015] Through the above technical solution, on the one hand, when the inlet pressure stabilizing diaphragm is installed on the water flow pressure stabilizing head, the installation protrusion can be interlocked with the installation groove to improve the installation stability of the inlet pressure stabilizing diaphragm; on the other hand, the installation protrusion can be interlocked with the installation groove so that even if the deformable part undergoes severe deformation, it can still achieve a positioning effect on the inlet pressure stabilizing diaphragm.

[0016] Preferably, the water inlet pressure stabilizing base is provided with a buffer step inside, and the buffer step is located between the water inlet and the water outlet.

[0017] With the above technical solution, the water flow enters through the water inlet and impacts the buffer step, thus buffering the water flow. In addition, the water flow after impacting the buffer step will also rush towards the water flow pressure stabilizing port, thereby offsetting the negative pressure in the sealed pressure stabilizing chamber. This helps to control the maximum deformation of the deformation part and improve the overall service life of the water inlet pressure stabilizing diaphragm.

[0018] Preferably, the water flow pressure stabilizing head is provided with a boss, which protrudes and is located near the opening of the sealed pressure stabilizing cavity.

[0019] With the above technical solution, when the water flows into the sealed pressure stabilizing cavity from the water flow pressure stabilizing port, after the water flow collides with the deformation part, a large part of it will enter between the boss and the side wall of the water flow pressure stabilizing head. This can extend the flow path of this part of the water flow in the sealed pressure stabilizing cavity and generate a certain amount of turbulence, so that the water flow pressure sensed by the deformation part is more accurate.

[0020] The second objective of this invention is to provide a diaphragm pump that can effectively stabilize the inlet water pressure.

[0021] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: A diaphragm pump includes a pump head, a water inlet seat on the pump head, a water inlet on the water inlet seat, and the aforementioned water inlet pressure stabilizing structure. The water inlet pressure stabilizing structure is installed on the water inlet seat, and the water outlet is connected to the water inlet.

[0022] Through the above technical solution, the water in the inlet pressure stabilizing structure will enter the inlet of the diaphragm pump from the water outlet. The inlet pressure stabilizing structure greatly improves the connection stability of the inlet pipeline, effectively suppresses pipeline vibration, reduces the risk of loosening and leakage at the connection, and significantly enhances the overall reliability and stability of the pump operation. Attached Figure Description

[0023] Figure 1 This is a cross-sectional structural diagram of the water inlet pressure stabilizing base in Examples 1 and 2; Figure 2 This is a cross-sectional schematic diagram of the water inlet pressure stabilizing diaphragm in Examples 1 and 2; Figure 3 These are schematic cross-sectional views of Examples 1 and 2; Figure 4 This is an exploded view of the structure in Example 3; Figure 5 This is a schematic diagram of the installation structure in Example 3.

[0024] Reference numerals: 1. Pump head; 2. Inlet seat; 21. Inlet; 3. Inlet pressure stabilizing diaphragm; 31. Deformation part; 32. Fixing part; 4. Fixing component; 5. Inlet pressure stabilizing seat; 51. Water inlet; 52. Water outlet; 53. Water pressure stabilizing port; 6. Sealed pressure stabilizing chamber; 7. Water pressure stabilizing head; 8. Mounting port; 9. Mounting protrusion; 10. Mounting groove; 11. Buffer step; 12. Boss. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered. Example 1:

[0026] A water inlet pressure stabilizing structure includes a water inlet pressure stabilizing base 5 and a water inlet pressure stabilizing diaphragm 3.

[0027] The water inlet pressure stabilizing base 5 is provided with a water inlet 51, a water outlet 52, and a water pressure stabilizing port 53, which are interconnected.

[0028] Water inlet 51 is used to connect with the water inlet pipe, which connects to an external water source.

[0029] The water outlet 52 is used to connect to the water inlet 21 of the pump head 1.

[0030] A water flow stabilizing head 7 is installed at the water flow stabilizing port 53 of the water inlet stabilizing base 5. The end of the water flow stabilizing head 7 is provided with an installation port 8. A sealed stabilizing chamber 6 is provided inside the water flow stabilizing head 7. The inlet pressure stabilizing diaphragm 3 is made of an elastic material, preferably elastic rubber or the like. The inlet pressure stabilizing diaphragm 3 includes a deformable part 31 located in the middle and a fixed part 32 located at the edge.

[0031] It also includes a fastener 4, which includes a clamp. The deformable part 31 covers the mounting opening 8, and the fastener 4 fits and fixes the fixing part 32 to the outside of the water flow pressure stabilizing head 7. Of course, the fastener 4 can also be made of materials such as metal wire, which can be wound around the outside of the fixing part 32 and then fixed to the outside of the water flow pressure stabilizing head 7 to achieve the purpose of fixing the fixing part 32 to the water flow pressure stabilizing head 7.

[0032] The entire inlet pressure stabilizing diaphragm 3 is sealed and installed on the water flow pressure stabilizing port 53 to form a closed pressure stabilizing chamber 6. The inlet pressure stabilizing diaphragm 3 can deform with changes in inlet water pressure, and the inlet water pressure can be stabilized by adjusting the volume of the closed pressure stabilizing chamber 6 to balance the fluctuations in inlet water pressure.

[0033] In addition, in order to further improve the installation stability of the inlet pressure stabilizing diaphragm 3 and the water flow pressure stabilizing head 7, an installation protrusion 9 is provided on the outer wall of the installation port 8 of the water flow pressure stabilizing head 7, and an installation groove 10 is provided between the fixing part 32 and the deformation part 31. The installation protrusion 9 and the installation groove 10 are fitted together. In this embodiment, the installation protrusion 9 is an annular protrusion and the installation groove 10 is an annular groove.

[0034] Example 2: Based on Example 1, the following structure is added: A buffer step 11 is provided inside the water inlet pressure stabilizing base 5, which is located between the water inlet 51 and the water outlet 52. A boss 12 is provided inside the water flow pressure stabilizing head 7, which protrudes and is located near the opening of the sealed pressure stabilizing chamber 6 at the water flow pressure stabilizing port 53. Example 3:

[0035] A diaphragm pump includes a pump head 1, a water inlet seat 2 on the pump head 1, a water inlet 21 on the water inlet seat 2, and a water inlet pressure stabilizing structure as described in Embodiment 1. The water inlet pressure stabilizing seat 5 is installed on the water inlet seat 2, and the water outlet 52 is connected to the water inlet 21.

[0036] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A water inlet pressure stabilizing structure, characterized in that: The system includes an inlet pressure stabilizing base (5) and an inlet pressure stabilizing diaphragm (3). The inlet pressure stabilizing base (5) is provided with a water inlet (51), a water outlet (52), and a water pressure stabilizing port (53). The water inlet (51), the water outlet (52), and the water pressure stabilizing port (53) are interconnected. The water outlet (52) is used to connect to the water inlet (21) of the pump head (1). The inlet pressure stabilizing diaphragm (3) is made of elastic material and is sealed and installed on the water pressure stabilizing port (53) to form a closed pressure stabilizing cavity (6). The inlet pressure stabilizing diaphragm (3) can deform with the change of inlet water pressure and balance the fluctuation of inlet water pressure by adjusting the volume of the closed pressure stabilizing cavity (6) to stabilize the inlet water pressure.

2. The inlet pressure stabilizing structure according to claim 1, characterized in that: It also includes a water flow pressure stabilizing head (7), which is located at the water flow pressure stabilizing port (53) of the water inlet pressure stabilizing base (5). The end of the water flow pressure stabilizing head (7) is provided with an installation port (8). The sealed pressure stabilizing cavity (6) is located inside the water flow pressure stabilizing head (7), and the water inlet pressure stabilizing diaphragm (3) is sealed and installed in the installation port (8).

3. The inlet pressure stabilizing structure according to claim 2, characterized in that: The inlet pressure stabilizing diaphragm (3) includes a deformable part (31) located in the middle and a fixed part (32) located at the edge; It also includes a fixing member (4), the deformable part (31) covers the mounting port (8), and the fixing member (4) fits and fixes the fixing part (32) to the outside of the water flow pressure stabilizing head (7).

4. The inlet pressure stabilizing structure according to claim 3, characterized in that: The fastener (4) includes a clamp.

5. The inlet pressure stabilizing structure according to claim 3, characterized in that: The water flow pressure stabilizing head (7) has an installation protrusion (9) on the outer wall of the installation port (8), and an installation groove (10) is provided between the fixing part (32) and the deformation part (31), and the installation protrusion (9) and the installation groove (10) are fitted together.

6. The inlet pressure stabilizing structure according to any one of claims 1-5, characterized in that: The water inlet pressure stabilizing base (5) is provided with a buffer step (11) inside, and the buffer step (11) is located between the water inlet (51) and the water outlet (52).

7. The inlet pressure stabilizing structure according to any one of claims 2-5, characterized in that: The water flow pressure stabilizing head (7) is provided with a boss (12), which protrudes and is located near the opening of the sealed pressure stabilizing cavity (6) of the water flow pressure stabilizing port (53).

8. A diaphragm pump, comprising a pump head (1), wherein the pump head (1) is provided with a water inlet seat (2), and the water inlet seat (2) is provided with a water inlet (21), characterized in that: It also includes the water inlet pressure stabilizing structure as described in any one of claims 1-5, wherein the water inlet pressure stabilizing base (5) is installed on the water inlet base (2), and the water outlet (52) is connected to the water inlet (21).

Images