Valve element structure and pump body thereof

Abstract

The utility model relates to the field of water pumps, in particular to a valve core structure and a pump body thereof, the valve core structure comprises a main body framework and a sealing ring sleeved on the main body framework, a circle of assembling groove position matched with the sealing ring is arranged on the outer side of the main body framework, and the sealing ring is sleeved on the corresponding assembling groove position; the hardness of the main body framework is larger than that of the sealing ring. The main framework serves as a main supporting structure of the valve element, the hardness of the main framework is larger than that of a sealing ring, and it is guaranteed that the valve element has enough rigidity and stability when bearing fluid pressure or mechanical stress. The main body framework is prevented from deforming under high pressure or high back pressure, so that the integrity and the sealing performance of the main body framework structure are kept. The sealing ring is arranged on the assembling groove position of the main body framework in a sleeving mode, and the good sealing effect is achieved through close fit.

Description

Technical Field

[0001] This utility model relates to the field of water pumps, and more particularly to a valve core structure and its pump body. Background Technology

[0002] Existing diaphragm pumps of the same type on the market face a series of performance problems during use, especially after prolonged storage, mainly focusing on valve core sticking and insufficient vacuum suction. Meanwhile, the traditional one-piece rubber valve core design also reveals several defects, as follows:

[0003] To address the aforementioned issues, in-depth analysis reveals the following design flaws in traditional one-piece rubber valve cores: Due to their integral rubber material and the need to balance dynamic sealing performance, the valve core is relatively soft. Under high back pressure, the valve core is prone to deformation, affecting dynamic sealing performance and leading to seal failure. Compared to sealing rings, the integral rubber valve core is larger, making it more susceptible to the precipitation of more sulfide substances during prolonged use or storage. These sulfide substances increase the adhesion between the valve core and the mating surface, further increasing the risk of valve core seizing up. Under high-pressure operating conditions, due to the softness of rubber, the integral rubber valve core may be washed away by the high-pressure fluid, leading to seal failure and a sharp decline in pump performance. This not only affects the normal operation of the pump but may also pose a threat to equipment safety. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a valve core structure and its pump body. The main frame, serving as the primary support structure for the valve core, has a higher hardness than the sealing ring, ensuring sufficient rigidity and stability of the valve core under fluid pressure or mechanical stress. This helps prevent deformation of the main frame under high pressure or high back pressure, thereby maintaining the integrity and sealing performance of the main frame structure. The sealing ring is fitted into the mounting groove of the main frame, achieving a good sealing effect through a tight fit.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a valve core structure, including a main frame and a sealing ring sleeved on the main frame, wherein a fitting groove for the sealing ring is provided on the outer side of the main frame, and the sealing ring is sleeved on the corresponding fitting groove; the hardness of the main frame is greater than the hardness of the sealing ring.

[0006] Furthermore, a ring of supporting bosses is provided on the outer side of the main frame, which is located below the mounting slot.

[0007] Furthermore, a cross-shaped sliding column is formed at the top of the main frame.

[0008] Furthermore, the inner wall of the sealing ring has a locking connection portion that engages with the fitting slot, and a sealing boss is formed on the surface of the sealing ring.

[0009] The application also provides a pump body, comprising a driving assembly, a valve body, and the valve core structure, wherein the driving assembly cooperates with the valve body and causes the internal cavity of the valve body to form a volume difference, each valve body is provided with a water inlet and a water outlet, and the valve core structure is fitted with a reset elastic element at the water inlet and the water outlet.

[0010] Further, the valve body comprises a valve table seat and a valve bottom seat, wherein the valve table seat and the valve bottom seat are covered together, and the valve bottom seat is provided with a soft diaphragm cooperating with the driving assembly, wherein the driving assembly drives the soft diaphragm to move up and down and causes the valve body to form a volume difference.

[0011] Further, the driving assembly comprises a motor, an eccentric wheel, a rotating shaft, and a swing frame, the output shaft of the motor is fitted with the eccentric wheel, the eccentric wheel is fitted at the waist hole in the center of the swing frame, the motor drives the eccentric wheel to rotate in the waist hole of the swing frame, so that the swing frame drives the soft diaphragm to move up and down.

[0012] Further, the upper end and the lower end of the swing frame are respectively provided with a plurality of fitting cones and fitting columns, wherein the soft diaphragm is provided with a first assembly groove position matched with the fitting cone and a second assembly groove position matched with the fitting column.

[0013] Further, it also comprises a water pump body, the water pump body is provided with a water inlet cavity and a water outlet cavity, and the water pump body is provided with a water inlet pipe communicating with the water inlet cavity and a water outlet pipe communicating with the water outlet cavity; wherein the water pump body is also provided with a motor assembly groove position for assembling the motor, two valve bodies are fitted on the upper and lower surfaces of the water pump body, and the water outlet of the valve body communicates with the water outlet cavity, and the water inlet of the valve body communicates with the water inlet cavity.

[0014] Further, it also comprises a spring connecting piece in the water outlet cavity, the reset elastic element comprises a first spring at the water outlet and a second spring in the water inlet cavity, one end of the first spring abuts against the inner side of the valve table seat, the other end of the first spring abuts against the connecting part at the end of the main body framework; one end of the second spring is connected with the connecting part of the valve body in the water outlet cavity, and the other end is connected with one end of the spring connecting piece, the other second spring is connected with the connecting part of the valve body in the water outlet cavity, and the other end is connected with the other end of the spring connecting piece.

[0015] The beneficial effects of the utility model lie in:

[0016] 1. The main body framework serves as the main supporting structure of the valve core, and its hardness is greater than that of the sealing ring, which ensures that the valve core has sufficient rigidity and stability when bearing fluid pressure or mechanical stress. This helps to prevent the main body framework from deforming under high pressure or high back pressure, thereby maintaining the integrity and sealing performance of the main body framework structure. The sealing ring is sleeved on the fitting groove of the main body framework, and good sealing effect is achieved through close cooperation.

[0017] 2. The main body frame made of plastic material has higher hardness, better rigidity and toughness than traditional rubber integrated valve core. This makes the vibration energy and amplitude generated when the motor is working more effectively transmitted to the sealing ring through the main body frame, which can prevent the adhesion phenomenon of the sealing ring due to long-term static. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a cross-sectional view of the outlet valve core structure.

[0019] Figure 2 is a cross-sectional view of the inlet valve core structure.

[0020] Figure 3 is a structural view of the water pump.

[0021] Figure 4 is a cross-sectional view of the water pump structure.

[0022] Figure 5 is a cross-sectional view of the water pump main body structure.

[0023] Figure 6 is a structural view of the eccentric wheel, rotating shaft and swing frame after assembly.

[0024] Figure 7 is a structural view of the swing frame.

[0025] Figure 8 is a structural view of the valve body.

[0026] Figure 9 is a cross-sectional view of the valve body structure.

[0027] BRIEF DESCRIPTION OF DRAWINGS: 10, valve core structure; 101, main body frame; 1011, assembly slot; 1012, support boss; 102, sealing ring; 1021, sealing boss; 1022, clamping connection part; 103, sliding column; 104, connection part; 11, drive assembly; 111, motor; 112, eccentric wheel; 113, rotating shaft; 114, swing frame; 1141, waist hole; 1142, assembly cone; 1143, assembly column; 12, valve body; 121, water inlet; 122, water outlet; 123, valve table seat; 124, valve base; 125, soft diaphragm; 1251, first assembly slot; 1252, second assembly slot; 13, water pump main body; 131, water inlet cavity; 132, water outlet cavity; 133, spring connecting piece; 134, first spring; 135, second spring; 136, water inlet pipe; 137, water outlet pipe. DETAILED DESCRIPTION

[0028] Please refer to Figures 1-9The utility model relates to a valve core structure 10, including main body framework 101, the sealing ring 102 of setting in main body framework 101, wherein the outside of main body framework 101 is provided with a circle of the fitting groove position 1011 of adapting sealing ring 102, and sealing ring 102 sets up in corresponding fitting groove position 1011, the hardness of main body framework 101 is greater than the hardness of sealing ring 102, in this specific embodiment, wherein main body framework 101 is plastic material, and sealing ring 102 is rubber material,

[0029] Its role is:

[0030] 1. main body framework 101 as the main support structure of valve core structure 10, its hardness is greater than sealing ring 102, ensure that valve core structure 10 has enough rigidity and stability when bearing fluid pressure or mechanical stress. This helps to prevent valve core structure 10 from deforming under high pressure or high back pressure, thereby maintaining the integrity and sealing performance of valve core structure 10. Sealing ring 102 sets up in the fitting groove position 1011 of main body framework 101, and good sealing effect is realized by close fit.

[0031] 2. The valve core structure 10 of plastic material has better rigidity and toughness compared to traditional rubber integrated valve core due to its higher hardness. This allows the vibration energy and amplitude generated when the motor 111 is working to be more effectively transmitted to the sealing ring 102 through the valve core structure 10. This energy transmission can prevent the sealing ring 102 from sticking due to long-term inactivity.

[0032] Meanwhile, the outside of main body framework 101 is provided with a circle of supporting boss 1012, which is located below the fitting groove position 1011. The supporting boss 1012 is located below the fitting groove position 1011, providing an additional support point for the sealing ring 102. This design helps to prevent the sealing ring 102 from serious displacement or falling off when subjected to pressure or vibration, thereby enhancing the stability of the sealing ring 102. When the sealing ring 102 is subjected to fluid pressure or mechanical stress, the supporting boss 1012 can ensure that the sealing ring 102 remains in the correct position, maintaining its sealing performance.

[0033] Further, the top end of main body framework 101 forms a "cross" type sliding column 103. The "cross" type sliding column 103 design allows the valve core structure 10 to accurately control the inflow or outflow of fluid. When the valve core structure 10 is in the closed state, the sealing ring 102 and supporting boss 1012 on the main body framework 101 can completely block the fluid passage, achieving sealed closing. When the valve core structure 10 needs to be opened, the sliding column 103 can slide along the guide groove of the water outlet 122 or water inlet 121, allowing the fluid to flow smoothly. This design ensures that the valve core structure 10 can reliably function as an on-off valve, meeting the needs of fluid control.

[0034] Further, the end of the main skeleton 101 is also formed with a connecting part 104, which is equipped with the reset elastic member. The main skeleton 101 realizes the reset of the water outlet 122 or the water inlet 121 through the reset elastic member.

[0035] The presence of the reset elastic member helps to improve the control accuracy of the valve core structure 10. When external control force acts on the valve core structure 10, the reset elastic member will generate a corresponding counterforce, helping the valve core structure 10 to be positioned more accurately at the required position. This design reduces the positional deviation of the valve core structure 10 caused by unstable control force or external interference, and improves the accuracy of fluid control.

[0036] Further, the inner side wall of the sealing ring 102 is formed with a clamping connecting part 1022 (in this specific embodiment, the longitudinal section of the clamping connecting part 1022 is semicircular) matched with the fitting groove 1011, and the surface of the sealing ring 102 is formed with a ring-shaped sealing boss 1021.

[0037] The clamping connecting part 1022 (such as the semicircular longitudinal section) of the inner side wall of the sealing ring 102 tightly matches the fitting groove 1011 of the main skeleton 101, ensuring that the sealing ring 102 can be firmly installed on the main skeleton 101 and is not easy to fall off or shift. The design of the clamping connecting part 1022 increases the contact area and friction between the sealing ring 102 and the main skeleton 101, improves the stability of the sealing ring 102, and enables it to better withstand fluid pressure and mechanical stress.

[0038] In addition, the sealing boss 1021 reduces the contact area between the sealing ring 102 and the corresponding plastic (or other material) of the water inlet outlet. This design helps to reduce the adhesion between the two, so that the required air pressure of the valve core structure 10 when opening is reduced. The presence of the sealing boss 1021 can also prevent the sealing ring 102 from sticking to the water inlet outlet after long-term contact, thereby ensuring the flexibility and reliability of the valve core structure 10.

[0039] Although the contact area is reduced, the design of the sealing boss 1021 can still ensure that the sealing ring 102 and the water inlet outlet form a good sealing effect. The boss can tightly fit the surface of the water inlet outlet to prevent fluid leakage.

[0040] In this embodiment, a pump body is also provided, which comprises a plurality of valve core structures 10, a driving assembly 11, and a valve body 12. The driving assembly 11 cooperates with the valve body 12 to form a volume difference in the internal cavity of the valve body 12. The valve body 12 is provided with a water inlet 121 and a water outlet 122, and the valve core structures 10 are arranged at the water inlet 121 and the water outlet 122. The valve body 12 comprises a valve table seat 123 and a valve bottom seat 124, which are connected together. The valve bottom seat 124 is provided with a soft diaphragm 125, which cooperates with the driving assembly 11. The driving assembly 11 drives the soft diaphragm 125 to move up and down, and forms a volume difference in the internal cavity of the valve body 12.

[0041] The pump body comprises a plurality of valve core structures 10 described in detail above, which are arranged at the water inlet 121 and the water outlet 122 to control the inflow and outflow of fluid. The driving assembly 11 cooperates with the valve body 12 to provide power for the pump body. It is responsible for generating driving force to form a volume difference in the internal cavity of the valve body 12, thereby promoting the flow of fluid. The valve table seat 123 and the valve bottom seat 124 are connected together to form the main part of the pump body. The valve body 12 is provided with the water inlet 121 and the water outlet 122 for fluid exchange with the external environment.

[0042] The valve table seat 123 and the valve bottom seat 124 are connected together to form the valve body 12, which provides a sealed passage for fluid. A sealing element is arranged between the valve table seat 123 and the valve bottom seat 124 to ensure the sealing of the valve body 12. The soft diaphragm 125 is arranged on the valve bottom seat 124 and cooperates with the driving assembly 11. The driving assembly 11 drives the soft diaphragm 125 to move up and down, changes the volume of the internal cavity of the valve body 12, forms a volume difference, and promotes the flow of fluid.

[0043] Working principle:

[0044] When the driving assembly 11 works, it drives the soft diaphragm 125 to move up and down. The movement of the soft diaphragm 125 changes the volume of the internal cavity of the valve body 12 and forms a volume difference. Under the action of the volume difference, fluid is sucked into the water inlet 121 and enters the internal cavity of the valve body 12 through the valve core structure 10. At the same time, the other valve core structure 10 is opened, and fluid flows out from the water outlet 122. Through continuous repetition of this process, the pump body realizes continuous delivery of fluid.

[0045] Further, the reset elastic member includes a first spring 134 located at the water outlet 122, one end of the first spring 134 abutting against the inside of the valve seat 123, and the other end of the first spring 134 abutting against the connecting portion 104. When the motor 111 stops or the eccentric wheel 112 rotates to a position where the eccentric force is reduced or disappears, the elastic force of the first spring 134 starts to act. Since one end of the first spring 134 abuts against the inside of the valve seat 123 and the other end abuts against the connecting portion 104, it can quickly push the valve body 12 to its initial position, achieving accurate and rapid reset.

[0046] Further, the drive assembly 11 includes the motor 111, the eccentric wheel 112, the rotating shaft 113, and the swing frame 114. The output shaft of the motor 111 is fitted with the eccentric wheel 112, which is fitted at the waist hole 1141 in the center of the swing frame 114. When the motor 111 drives the eccentric wheel 112 to rotate in the waist hole 1141 of the swing frame 114, the swing frame 114 drives the soft diaphragm 125 to move up and down. The upper and lower ends of the swing frame 114 are respectively provided with a plurality of fitting cones 1142 and fitting columns 1143. The soft diaphragm 125 is provided with a first assembly groove 1251 fitted with the fitting cone 1142 and a second assembly groove 1252 fitted with the fitting column 1143.

[0047] The working principle is as follows: After the motor 111 is started, its output shaft drives the eccentric wheel 112 to rotate. When the eccentric wheel 112 rotates in the waist hole 1141 of the swing frame 114, a periodic eccentric force is generated. This eccentric force drives the swing frame 114 to swing up and down. The up-and-down swinging of the swing frame 114 is transmitted to the soft diaphragm 125 through the fitting cone 1142 and the fitting column 1143. The soft diaphragm 125 moves up and down after being subjected to the eccentric force, thereby changing the volume of the internal cavity of the valve body 12. The formation of the volume difference drives the flow of fluid.

[0048] Further, the water pump body 13 is provided with a water inlet cavity 131 and a water outlet cavity 132, and the water pump body 13 is provided with a water inlet pipe 136 communicating with the water inlet cavity 131 and a water outlet pipe 137 communicating with the water outlet cavity 132. The water pump body 13 is also provided with a motor 111 assembly groove for assembling the motor 111. The two valve bodies 12 are assembled on the upper and lower surfaces of the water pump body 13, and the water outlet 122 of the valve body 12 communicates with the water outlet cavity 132, and the water inlet 121 of the valve body 12 communicates with the water inlet cavity 131.

[0049] The water pump body 13 is the core component of the entire system, which is internally provided with a water inlet cavity 131 and a water outlet cavity 132 for storing and conveying fluid respectively. The water pump body 13 is connected with a water inlet pipe 136 and a water outlet pipe 137. The water inlet pipe 136 is connected with the water inlet cavity 131 for introducing external fluid into the water pump system; the water outlet pipe 137 is connected with the water outlet cavity 132 for conveying fluid in the water pump system to the outside. The water pump body 13 is further provided with a motor 111 assembly slot for assembling the motor 111 to provide power for the entire system. Two valve bodies 12 are respectively arranged on the upper and lower surfaces of the water pump body 13 and are tightly connected with the water pump body 13. The water outlet 122 of the valve body 12 is in communication with the water outlet cavity 132 of the water pump body 13, and the water inlet 121 of the valve body 12 is in communication with the water inlet cavity 131 of the water pump body 13.

[0050] The valve body 12 is internally provided with the valve core structure 10 and the soft diaphragm 125 mentioned above for controlling the flow direction and flow rate of fluid. The drive assembly 11 includes the motor 111, the eccentric wheel 112, the swing frame 114 and other components, which are assembled in the motor 111 assembly slot of the water pump body 13. The motor 111 drives the soft diaphragm 125 to move up and down through the eccentric wheel 112 and the swing frame 114, thereby changing the volume of the internal cavity of the valve body 12 to form a volume difference to drive fluid flow.

[0051] More specifically, the working principle is as follows: after the motor 111 is connected to the power supply and started, the eccentric wheel 112 rotates in the motor 111 assembly slot of the water pump body 13. The eccentric force generated by the rotation of the eccentric wheel 112 acts on the swing frame 114, causing the swing frame 114 to swing up and down. The swing frame 114 transmits motion to the soft diaphragm 125: the swing of the swing frame 114 is transmitted to the soft diaphragm 125 through the matching cone 1142 and the matching column 1143, causing the soft diaphragm 125 to move up and down. The up and down movement of the soft diaphragm 125 simultaneously changes the volume of the internal cavity of the valve body 12 and the water inlet cavity 131 or the water outlet cavity 132 of the water pump body 13. Under the action of the volume difference, fluid is sucked into the water inlet cavity 131, then enters the water outlet cavity 132 through the valve body 12, and finally is discharged from the water pump system through the water outlet pipe 137.

[0052] Further, the reset elastic member further comprises two second springs 135 located in the water outlet cavity 132 and a spring connecting piece 133 located in the water outlet cavity 132, wherein one end of the second spring 135 is connected with the connecting portion 104 of the valve body 12 located in the water outlet cavity 132, and the other end is connected with one end of the spring connecting piece 133, and the other second spring 135 is connected with the connecting portion 104 of the valve body 12 located in the water outlet cavity 132, and the other end is connected with the other end of the spring connecting piece 133. When the motor 111 stops or the eccentric wheel 112 rotates to a certain position, the eccentric force decreases or disappears. At this time, the elastic force of the second spring 135 starts to act, and the valve body 12 is pushed to its initial position through the spring connecting piece 133 and the connecting portion 104, so as to ensure that the valve body 12 can be reset accurately and rapidly.

[0053] Moreover, in the present application, the first spring 134 and the second spring 135 can transmit the vibration of the motor 111 in the working process, so as to loosen the adhered valve core. The first spring 134 and the second spring 135 are used as vibration transmission media here. They not only have the functions of energy storage and energy release, but also can effectively transmit the vibration energy of the motor 111 to the valve core. The stiffness and pre-tightening force of the spring are the key factors affecting the vibration transmission efficiency. Through reasonable design of the parameters of the spring, the vibration transmission effect can be optimized, and the valve core can be ensured to be vibrated enough to loosen the adhered part while ensuring the basic sealing function.

[0054] The above embodiments only describe the preferred embodiments of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various deformations and improvements of the technical solutions of the present application made by ordinary engineering technicians in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A valve trim structure, characterized by: The sealing ring is sleeved on the main body framework, and the outer side of the main body framework is provided with a set of fitting grooves matched with the sealing ring, and the inner side wall of the sealing ring is formed with a set of clamping connecting parts matched with the fitting grooves.

2. A valve trim structure according to claim 1, characterized in that: The outer side of the main body framework is provided with a set of supporting bosses below the fitting grooves.

3. A valve trim structure according to claim 1, wherein: The top end of the main body framework is formed with a sliding column in the shape of a cross.

4. A pump body characterized by: The valve core structure of any one of claims 1-3 is arranged on the water inlet and the water outlet of the valve body.

5. A pump body as claimed in claim 4, wherein: The valve body comprises a valve table seat and a valve bottom seat, and the valve bottom seat is provided with a soft diaphragm matched with the driving assembly.

6. A pump body as claimed in claim 5, wherein: The driving assembly comprises a motor, an eccentric wheel, a rotating shaft and a swing frame, the output shaft of the motor is provided with the eccentric wheel, the eccentric wheel is arranged in the waist hole in the center of the swing frame, and the motor drives the eccentric wheel to rotate in the waist hole of the swing frame, so that the swing frame drives the soft diaphragm to move up and down.

7. A pump body according to claim 6, wherein: The upper and lower ends of the swing frame are respectively provided with a plurality of fitting cones and fitting columns, and the soft diaphragm is provided with a first assembly groove matched with the fitting cones and a second assembly groove matched with the fitting columns.

8. A pump body as claimed in claim 6, wherein: The water pump body is provided with a water inlet cavity and a water outlet cavity, and the outer side of the water pump body is provided with a water inlet pipe communicated with the water inlet cavity and a water outlet pipe communicated with the water outlet cavity.

9. A pump body as claimed in claim 6, wherein: The water pump body is provided with a motor assembly groove for assembling the motor, and the two valve bodies are arranged on the upper and lower surfaces of the water pump body. The reset elastic member comprises a first spring arranged at the water outlet and a second spring arranged in the water inlet cavity, one end of the first spring abuts against the inner side of the valve table seat, and the other end of the first spring abuts against the connecting part at the end of the main body framework. One end of the second spring is connected with the connecting part of the valve body in the water outlet cavity, and the other end is connected with one end of the spring connecting piece. The other second spring is connected with the connecting part of the valve body in the water outlet cavity, and the other end is connected with the other end of the spring connecting piece.

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