A leak-proof adjustable diaphragm pump

Abstract

This utility model discloses a leak-proof adjustable diaphragm pump, belonging to the field of diaphragm pump technology. It includes a housing, an inlet chamber, a stop chamber, an outlet chamber, an intermediate chamber, a piston cup, a drive chamber, a connecting rod, and a pressure regulating component. The housing has an inlet and an outlet on its top. The inlet chamber is located inside the housing, with a first umbrella-shaped valve movably connected to its bottom. The stop chamber is also located inside the housing, containing a valve plate. The outlet chamber is located inside the housing, with a second umbrella-shaped valve movably connected to its bottom. The intermediate chamber is located inside the housing, with piston cups arranged in pairs and installed in the two intermediate chambers. The drive chamber is located at the bottom of the housing, with a motor installed at its bottom. The motor's output end extends into the drive chamber and is fitted with an eccentric wheel. The connecting rod is connected to the eccentric wheel, and both ends of the connecting rod are connected to the two piston cups. The pressure regulating component is located inside the stop chamber. This design significantly improves the reliability, durability, and economy of the diaphragm pump.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm pump technology, specifically to an adjustable diaphragm pump that is leak-proof. Background Technology

[0002] A diaphragm pump uses a motor to provide circular motion, which in turn causes a mechanical device to reciprocate the motion of a diaphragm inside the pump. This reciprocates the air within the pump chamber, compressing and stretching it. Under the action of a one-way valve, a pressure difference is created between the outlet or inlet and the external atmospheric pressure. This pressure difference forces liquid into the inlet and out of the outlet. This type of diaphragm pump has found widespread application in small household appliances and medical devices.

[0003] However, in existing diaphragm pumps, the one-way valve plate's water-stopping function is achieved by a spring pressing the valve plate at the outlet. The spring applies a constant pressure to the top of the valve plate to ensure it closes and prevents leakage when the pump is not operating. But with prolonged use, the spring inevitably fatigues and ages, leading to a decrease in its elastic modulus and a weakening of its preload. At this point, the spring can no longer effectively press the valve plate, creating a gap between the valve plate and the valve seat, resulting in leakage. This problem not only reduces the pump's reliability but can also cause energy waste, environmental pollution, and even equipment damage. Currently, the main solution is to replace the spring or the entire water-stopping assembly, but this method is cumbersome and costly.

[0004] Therefore, how to provide a leak-proof adjustable diaphragm pump to overcome the shortcomings of the existing technology is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] Therefore, this utility model provides a leak-proof adjustable diaphragm pump to solve the problem of water leakage in existing diaphragm pumps caused by fatigue and aging of the spring at the one-way valve plate.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a leak-proof adjustable diaphragm pump, comprising:

[0008] The shell has an inlet and an outlet on the top.

[0009] A water inlet cavity is formed inside the housing and communicates with the water inlet. A first umbrella shape is movably connected to the bottom of the water inlet cavity.

[0010] A water-stopping cavity is formed inside the housing and communicates with the water outlet; a valve plate is provided inside the water-stopping cavity.

[0011] A water outlet cavity is formed inside the shell, and the water outlet cavity is connected to the water stop cavity. A second umbrella shape is movably connected to the bottom of the water outlet cavity.

[0012] The intermediate cavities are arranged in pairs and are formed inside the shell. The two intermediate cavities are respectively connected to the water inlet cavity and the water outlet cavity, and the two intermediate cavities are interconnected.

[0013] The leather cups are arranged in pairs and installed in the two intermediate cavities respectively;

[0014] A drive chamber is located at the bottom inside the housing. A motor is installed at the bottom of the drive chamber, and the output end of the motor extends into the drive chamber and is fitted with an eccentric wheel.

[0015] A connecting rod is connected to the eccentric wheel, and the two ends of the connecting rod are respectively connected to the two leather cups;

[0016] A pressure regulating component is disposed within the water-stopping cavity, and the pressure regulating component is used to regulate the pressure of the valve plate.

[0017] Furthermore, the voltage regulating component includes:

[0018] A pressure regulating cavity is formed on the inner wall of the water-stopping cavity, and the pressure regulating cavity is internally connected to the water-stopping cavity;

[0019] Sliding columns are arranged in pairs, respectively located at both ends of the pressure regulating chamber;

[0020] A pressure plate is slidably connected to the pressure regulating chamber via the sliding column, and the pressure plate is positioned above the valve plate;

[0021] A spring is disposed between the pressure plate and the valve plate;

[0022] The pressure adjusting bolts are arranged in pairs and threaded to the top of the housing. The lower end of the pressure adjusting bolt extends into the pressure adjusting cavity and presses against the top of the pressure plate.

[0023] Furthermore, the top of the compression plate is provided with several through holes.

[0024] Furthermore, a limiting portion is formed at the bottom of the pressure plate, a limiting post is integrally formed at the top of the valve plate, one end of the spring is sleeved on the outside of the limiting post, and the other end of the spring extends into the limiting portion.

[0025] Furthermore, the valve plate includes a water-stopping part and an edge part, and the top of the edge part is provided with several water passage holes.

[0026] Furthermore, the valve plate is made of silicone rubber.

[0027] This utility model has the following advantages:

[0028] This invention, by incorporating a pressure regulating component within the sealing cavity, allows for dynamic adjustment of the valve plate pressure. This effectively compensates for the elasticity decay of the spring due to long-term use, ensuring a consistently tight seal between the valve plates and the spring. It solves the leakage problem caused by spring aging in traditional diaphragm pumps, significantly improving equipment reliability and reducing maintenance cycles. Furthermore, the pressure regulating component allows the pressure applied to the valve plate to be precisely adjusted according to actual operating conditions, rather than being a fixed value. This not only compensates for aging but also optimizes the sealing pressure during initial installation to adapt to different working pressures or media characteristics, enhancing the product's versatility and reliability.

[0029] When signs of leakage appear, there is no need to replace the entire stop valve assembly or spring; simply adjusting the pressure adjusting bolt with a tool can restore the sealing performance. This maintenance method saves time and effort, greatly reducing subsequent maintenance costs and downtime, and improving the economic efficiency of the equipment. Attached Figure Description

[0030] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0031] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0032] Figure 1 A perspective view of the leak-proof adjustable diaphragm pump provided by this utility model;

[0033] Figure 2 A front sectional view of the leak-proof adjustable diaphragm pump provided by this utility model;

[0034] Figure 3 Provided by this utility model Figure 2 Enlarged view of the voltage regulation component;

[0035] Figure 4 A perspective view of the compression plate and valve plate provided for this utility model.

[0036] In the diagram: 1. Housing; 11. Inlet; 12. Outlet; 2. Inlet cavity; 21. First umbrella shape; 3. Water stop cavity; 4. Valve plate; 41. Limiting post; 42. Water stop part; 43. Edge part; 44. Water passage hole; 5. Outlet cavity; 51. Second umbrella shape; 6. Intermediate cavity; 7. Leather cup; 8. Drive cavity; 81. Motor; 82. Eccentric wheel; 83. Connecting rod; 9. Pressure regulating assembly; 91. Pressure regulating cavity; 92. Sliding column; 93. Pressure plate; 931. Through hole; 932. Limiting part; 94. Spring; 95. Pressure regulating bolt. Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] Please refer to Figures 1-4 The present invention discloses a leak-proof adjustable diaphragm pump, which consists of nine parts, as follows: Figure 1 , Figure 2 As shown, the device includes a housing 1, an inlet chamber 2, a stop chamber 3, an outlet chamber 5, an intermediate chamber 6, a piston cup 7, a drive chamber 8, a connecting rod 83, and a pressure regulating assembly 9. The top of the housing 1 is provided with an inlet 11 and an outlet 12. The inlet chamber 2 is located inside the housing 1 and communicates with the inlet 11. A first umbrella-shaped structure 21 is movably connected to the bottom of the inlet chamber 2. The stop chamber 3 is located inside the housing 1 and communicates with the outlet 12. A valve plate 4 is provided inside the stop chamber 3. The outlet chamber 5 is located inside the housing 1 and communicates with the stop chamber 3. A second umbrella-shaped structure 51 is movably connected to the bottom of the outlet chamber 5. The intermediate cavities 6 are arranged in pairs and are located inside the housing 1. The two intermediate cavities 6 are connected to the inlet cavity 2 and the outlet cavity 5 respectively, and the two intermediate cavities 6 are interconnected. The leather cups 7 are arranged in pairs and are installed in the two intermediate cavities 6 respectively. The drive cavity 8 is located at the bottom inside the housing 1. The bottom of the drive cavity 8 is equipped with a motor 81. The output end of the motor 81 extends into the drive cavity 8 and is equipped with an eccentric wheel 82. The connecting rod 83 is connected to the eccentric wheel 82. The two ends of the connecting rod 83 are connected to the two leather cups 7 respectively. The pressure regulating component 9 is located in the water stop cavity 3 and is used to regulate the pressure of the valve plate 4.

[0039] In this embodiment, the specific connection shape inside the housing 1 is as follows: Figure 2 As shown, the diaphragm pump of this application has the same main structure as the diaphragm pump in the prior art. This application adds a pressure regulating component 9 to the water-stopping cavity 3 below the outlet 12. The positions of the first umbrella-shaped part 21 and the second umbrella-shaped part 51 are as follows... Figure 2As shown, there is a connecting channel 1 between the bottom of the inlet chamber 2 and the intermediate chamber 6. The first umbrella-shaped chamber 21 is movably connected to the bottom of the inlet chamber 2 and can open / close the first channel. There is a connecting channel 2 between the bottom of the outlet chamber 5 and the intermediate chamber 6. The second umbrella-shaped chamber 51 is movably connected to the bottom of the outlet chamber 5 and can open / close the second channel. When the motor 81 starts, the eccentric wheel 82 drives the connecting rod 83, causing the two rubber cups 7 to compress and stretch the air in the intermediate chamber 6. The first umbrella-shaped chamber 21 and the second umbrella-shaped chamber 51 then reciprocate. The intermediate chambers 6 are connected by a third channel, which is positioned at the same horizontal level as the inlet chamber 2 and the outlet chamber 5.

[0040] By installing a pressure regulating component 9 within the water-stopping chamber 3, the pressure on the valve plate 4 can be dynamically adjusted. This effectively compensates for the elasticity decay of the spring 94 due to long-term use, ensuring a continuous tight seal of the valve plate 4. This solves the leakage problem caused by the aging of the spring 94 in traditional diaphragm pumps, significantly improving equipment reliability and maintenance cycles. Furthermore, the pressure regulating component 9 allows the pressure applied to the valve plate 4 to be precisely adjusted according to actual operating conditions, rather than being a fixed value. This not only compensates for aging but also optimizes the sealing pressure during initial installation to adapt to different working pressures or media characteristics, enhancing the product's versatility and reliability.

[0041] like Figure 2 , Figure 3 As shown, the pressure regulating assembly 9 includes a pressure regulating chamber 91, a sliding column 92, a pressure plate 93, a spring 94, and a pressure regulating bolt 95. The pressure regulating chamber 91 is located on the inner wall of the water-stopping chamber 3 and is internally connected to the water-stopping chamber 3. The sliding columns 92 are arranged in pairs and are respectively located at both ends of the pressure regulating chamber 91. The pressure plate 93 is slidably connected to the pressure regulating chamber 91 through the sliding columns 92 and is located above the valve plate 4. The spring 94 is located between the pressure plate 93 and the valve plate 4. The pressure regulating bolts 95 are arranged in pairs and are threadedly connected to the top of the housing 1. The lower end of the pressure regulating bolt 95 extends into the pressure regulating chamber 91 and presses against the top of the pressure plate 93.

[0042] In this embodiment, the positions of the pressure regulating chamber 91, the pressure plate 93, and the pressure regulating bolt 95 are as follows: Figure 3As shown, the pressure regulating chamber 91 is a rectangular cavity extending to both sides of the water-stopping chamber 3. Two sliding pillars 92 are respectively disposed in the pressure regulating chambers 91 on both sides of the water-stopping chamber 3. Two pressure regulating bolts 95 enter the pressure regulating chambers 91 from the top of both ends of the pressure regulating chambers 91. The pressure regulating bolts 95 are threadedly connected to the top of the housing 1. The advantage of this is that the precise thread structure has anti-leakage capability, preventing water leakage. Preferably, sealing tape can be added and wrapped around the threads of the pressure regulating bolts 95 to further prevent leakage. It is worth noting that during pressure adjustment, the two pressure regulating bolts 95 need to rotate synchronously with the same rotation amplitude. This ensures that the pressure at both ends of the pressure plate 93 is the same, thus keeping the valve plate 4 vertically up and down, preventing water leakage.

[0043] By setting up a pressure regulating chamber 91, a sliding column 92, and a pressing plate 93, and combining the guiding structure of the sliding column 92, the smoothness and verticality of the movement of the pressing plate 93 are ensured, thus guaranteeing the tightness of the sealing of the pressing plate 93.

[0044] By configuring the pressure plate 93, spring 94, and adjusting bolt 95, the pressure plate 93 can be pushed downwards by rotating the adjusting bolt 95, thereby applying an adjustable, additional compensating pressure to the aging spring 94. This effectively counteracts the preload reduction caused by spring 94 fatigue, ensuring that the valve plate 4 is always tightly pressed against the valve seat. This solves the leakage problem caused by spring 94 aging and greatly extends the overall service life of the diaphragm pump. Furthermore, when leakage occurs, there is no need to replace the entire stop valve assembly or spring 94; simply adjusting the adjusting bolt 95 with a tool restores the sealing performance. This maintenance method saves time and effort, greatly reducing subsequent maintenance costs and downtime, and improving the economic efficiency of the equipment.

[0045] Preferred, such as Figure 4 As shown, the top of the pressure plate 93 has several through holes 931. By providing through holes 931 on the pressure plate 93, fluid resistance is reduced, ensuring the normal water flow rate of the pump.

[0046] like Figure 4 As shown, a limiting part 932 is formed at the bottom of the pressure plate 93, a limiting post 41 is integrally formed at the top of the valve plate 4, one end of the spring 94 is sleeved on the outside of the limiting post 41, and the other end of the spring 94 extends into the limiting part 932.

[0047] In this embodiment, the shapes of the limiting part 932 and the limiting post 41 are as follows: Figure 4As shown, the limiting part 932 is a circular tubular structure, and the limiting post 41 is a cylindrical structure. The inner diameter of the limiting part 932 is slightly larger than the inner diameter of the spring 94, and the inner diameter of the limiting post 41 is slightly smaller than the inner diameter of the spring 94. By setting the limiting post 41 and the limiting part 932, the spring 94 is prevented from being misaligned or twisted during the movement, thus ensuring the effectiveness and stability of force transmission.

[0048] like Figure 4 As shown, the valve plate 4 includes a water-stopping part 42 and an edge part 43. The top of the edge part 43 is provided with several water passage holes 44. In this embodiment, the water-stopping part 42 is used to cooperate with the hole at the bottom of the water-stopping cavity 3 to seal the hole and prevent water leakage. The edge part 43 can not only further seal the hole, but also maintain the direction of the valve plate 4 when the valve plate 4 is raised. Water coming out of the water outlet cavity 5 can flow into the water-stopping cavity 3 through the water passage holes 44, and then flow out from the water outlet 12. The water passage holes 44 of the edge part 43 of the valve plate 4 are designed to optimize the fluid channel and reduce turbulence loss.

[0049] Preferably, the valve plate 4 is made of silicone rubber. Silicone rubber has excellent elasticity, sealing performance, and corrosion resistance. It maintains excellent sealing performance even under long-term high-pressure conditions. Combined with adjustable clamping force, it achieves even better sealing performance, further ensuring no leakage from the diaphragm pump when it is stopped.

[0050] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A leak-proof adjustable diaphragm pump, characterized in that, include: The shell (1) has an inlet (11) and an outlet (12) on its top. The water inlet cavity (2) is opened inside the housing (1) and is connected to the water inlet (11). The bottom of the water inlet cavity (2) is movably connected to the first umbrella shape (21). A water-stopping cavity (3) is formed inside the housing (1) and connected to the water outlet (12). A valve plate (4) is provided inside the water-stopping cavity (3). The water outlet cavity (5) is opened inside the housing (1), the water outlet cavity (5) is connected to the water stop cavity (3), and the bottom of the water outlet cavity (5) is movably connected to the second umbrella shape (51); Intermediate cavities (6) are arranged in pairs and are opened inside the shell (1). The two intermediate cavities (6) are respectively connected to the water inlet cavity (2) and the water outlet cavity (5), and the two intermediate cavities (6) are interconnected. The leather cups (7) are arranged in pairs and installed in the two intermediate cavities (6) respectively; A drive cavity (8) is opened at the bottom inside the housing (1). A motor (81) is installed at the bottom of the drive cavity (8). The output end of the motor (81) extends into the drive cavity (8) and is equipped with an eccentric wheel (82). The connecting rod (83) is connected to the eccentric wheel (82), and the two ends of the connecting rod (83) are respectively connected to the two leather cups (7); A pressure regulating component (9) is disposed in the water-stopping cavity (3) and is used to regulate the pressure of the valve plate (4).

2. The leak-proof adjustable diaphragm pump as described in claim 1, characterized in that, The voltage regulating component (9) includes: A pressure regulating cavity (91) is provided on the inner wall of the water-stopping cavity (3), and the pressure regulating cavity (91) is internally connected to the water-stopping cavity (3); Sliding columns (92) are arranged in pairs and are respectively located at both ends of the pressure regulating cavity (91); The pressure plate (93) is slidably connected in the pressure regulating chamber (91) via the sliding column (92), and the pressure plate (93) is disposed above the valve plate (4); A spring (94) is disposed between the pressure plate (93) and the valve plate (4); The pressure adjusting bolts (95) are arranged in pairs and threaded to the top of the housing (1). The lower end of the pressure adjusting bolts (95) extends into the pressure adjusting cavity (91) and presses against the top of the pressure plate (93).

3. The leak-proof adjustable diaphragm pump as described in claim 2, characterized in that, The top of the compression plate (93) has several through holes (931).

4. The leak-proof adjustable diaphragm pump as described in claim 2, characterized in that, The bottom of the pressure plate (93) forms a limiting part (932), the top of the valve plate (4) is integrally formed with a limiting post (41), one end of the spring (94) is sleeved on the outside of the limiting post (41), and the other end of the spring (94) extends into the limiting part (932).

5. The leak-proof adjustable diaphragm pump as described in claim 1, characterized in that, The valve plate (4) includes a water-stopping part (42) and an edge part (43), and the top of the edge part (43) is provided with several water passage holes (44).

6. The leak-proof adjustable diaphragm pump as described in claim 1, characterized in that, The valve plate (4) is made of silicone rubber.

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