Water outlet one-way valve structure and self-priming pump

Abstract

The invention provides a water outlet one-way valve structure and a self-priming pump. The self-priming pump comprises a valve seat provided with a water outlet. The water outlet one-way valve structure comprises a diaphragm body and a reinforcing rib arranged on one side of the diaphragm body. The number of the reinforcing ribs and the number of the water outlets are both at least two, and the reinforcing ribs are arranged around the axis of the diaphragm body at intervals. And the diaphragm body between two adjacent reinforcing ribs forms a control valve body. When the water outlet one-way valve structure is used, the control valve bodies and the water outlets in the valve seat are arranged in a one-to-one correspondence mode, and the reinforcing ribs are arranged between every two adjacent control valve bodies, so that the strength of the diaphragm body between every two adjacent control valve bodies is improved, and then the mutual influence between every two adjacent control valve bodies is reduced; it is guaranteed that when one of the two corresponding adjacent control valve bodies is in the open state, the other control valve body can be in the closed state, and the reliability of the water outlet one-way valve structure and the efficiency of the self-priming pump are improved.

Description

Technical Field

[0001] The present invention relates to the field of water pumps, and in particular to a water outlet one-way valve structure and a self-priming pump. Background Art

[0002] Existing (diaphragm) self-priming pumps are highly efficient conveying devices that combine the structure of a diaphragm pump with self-priming functionality. Due to the limited external volume of the pump body and the required flow rate, self-priming pumps are typically equipped with both an inlet and outlet check valve. However, in actual use, there is a problem that the efficiency of the self-priming pump can be affected by a defective outlet check valve. Summary of the Invention

[0003] Based on this, it is necessary to provide a water outlet one-way valve structure and a self-priming pump to address the problem that the efficiency of the self-priming pump in the prior art is affected by a defective water outlet one-way valve during actual use.

[0004] The technical solution is as follows:

[0005] On the one hand, a water outlet check valve structure is provided, which is applied to a self-priming pump. The self-priming pump includes a valve seat provided with a water outlet. The water outlet check valve structure includes a diaphragm body and a reinforcing rib provided on one side of the diaphragm body. The number of the reinforcing ribs and the number of the water outlets are both at least two. The reinforcing ribs are arranged at intervals around the axis of the diaphragm body. The diaphragm body located between two adjacent reinforcing ribs forms a control valve body.

[0006] When the water outlet one-way valve structure is installed on the valve seat, the side of the diaphragm body away from the reinforcement rib is in contact with the valve seat, and each control valve body is arranged in a one-to-one correspondence with each water outlet to close each water outlet, and each control valve body can undergo elastic deformation to open the corresponding water outlet.

[0007] The technical solution is further described below:

[0008] In one embodiment, each of the reinforcing ribs is spaced apart and located on the inner side of the outer side wall of the diaphragm body. The outer side wall of the diaphragm body is provided with at least two notches, and each of the notches is located on the extension line of each of the reinforcing ribs in a one-to-one correspondence.

[0009] In one embodiment, the diaphragm body is provided with a raised portion on one side of the reinforcing rib, and the raised portion is located in the middle of the diaphragm body. One end of each of the reinforcing ribs is connected to the outer wall of the raised portion, and the other end extends toward the outer wall of the diaphragm body.

[0010] In one embodiment, the thickness of the diaphragm body is 0.6 mm to 1.0 mm.

[0011] In one embodiment, the roughness of the side of the diaphragm body away from the reinforcing rib is Ra0.4 to Ra0.8.

[0012] On the other hand, a self-priming pump is provided, comprising a water inlet and outlet cover and the water outlet one-way valve structure, wherein the water inlet and outlet cover is installed on one side of the valve seat and presses the water outlet one-way valve structure onto the valve seat.

[0013] In one embodiment, the valve seat is provided with a first positioning portion, and the water outlet one-way valve structure is provided with a second positioning portion that is positioned and matched with the first positioning portion.

[0014] In one embodiment, the water outlet one-way valve is provided with a third positioning portion, and the water inlet and outlet cover is provided with a fourth positioning portion that is positioned and matched with the third positioning portion.

[0015] In one embodiment, the self-priming pump also includes a diaphragm bracket, a main diaphragm, a water inlet check valve structure and a drive assembly. The diaphragm bracket is used to press the main diaphragm against the side of the valve seat away from the water inlet and outlet cover. The main diaphragm and the valve seat cooperate to form at least two chambers. The valve seat is also provided with at least two water inlets. Each of the chambers is connected to each of the water inlets and each of the water outlets in a one-to-one correspondence. The number of the water inlet check valve structures is at least two. Each of the water inlet check valves is correspondingly installed at each of the water inlets. The drive assembly is transmission-connected to the main diaphragm to change the volume of each of the chambers.

[0016] In one embodiment, the self-priming pump further comprises a fixed bracket, which is mounted on a side of the diaphragm bracket away from the valve seat, and the drive assembly comprises a motor mounted on the fixed bracket, an eccentric wheel transmission-connected to the output shaft of the motor, and a swing bracket obliquely mounted on the eccentric wheel, wherein the swing bracket is transmission-connected to one end of the main diaphragm away from the valve seat.

[0017] When the water outlet one-way valve structure and the self-priming pump in the above-mentioned embodiment are in use, each control valve body is arranged in a one-to-one correspondence with each water outlet on the valve seat, and reinforcing ribs are provided between two adjacent control valve bodies, so that the strength of the diaphragm body between the two adjacent control valve bodies is increased. Then, when one of the two adjacent control valve bodies is elastically deformed, the influence of the elastically deformed control valve body on the sealing performance of the other control valve body is reduced, that is, the mutual influence between the two adjacent control valve bodies is reduced, ensuring that when one of the two corresponding adjacent control valve bodies is in an open state, the other can be in a closed state, thereby improving the reliability of the water outlet one-way valve structure and the efficiency of the self-priming pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings that constitute a part of this application are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A cross-sectional view of a self-priming pump according to an embodiment.

[0021] Figure 2 for Figure 1 Exploded diagram of a self-priming pump.

[0022] Figure 3 for Figure 1 A partial enlarged view of part A.

[0023] Figure 4 Schematic diagram of the structure of a water outlet one-way valve according to an embodiment.

[0024] Figure 5 for Figure 4 A top view of the water outlet one-way valve structure.

[0025] Figure 6 for Figure 4 Front view of the water outlet one-way valve structure.

[0026] Figure 7 for Figure 4 A bottom view of the water outlet one-way valve structure.

[0027] Figure 8 Schematic diagram of the structure of a valve seat according to an embodiment.

[0028] Description of reference numerals:

[0029] 10. Self-priming pump; 100. Water outlet one-way valve structure; 110. Diaphragm body; 120. Reinforcement rib; 130. Control valve body; 140. Notch; 150. Protrusion; 160. Second positioning portion; 170. Third positioning portion; 200. Valve seat; 210. Water outlet; 220. First positioning portion; 230. Water inlet; 300. Water inlet and outlet cover; 310. Fourth positioning portion; 400. Diaphragm bracket; 500. Main diaphragm; 510. Chamber; 600. Water inlet one-way valve structure; 700. Drive assembly; 710. Motor; 720. Eccentric wheel; 730. Swing bracket; 800. Fixed bracket. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0031] In view of the problem that the efficiency of the self-priming pump in the prior art is affected by the defective water outlet one-way valve during actual use, the inventors have found through research and testing that the defective water outlet one-way valve includes but is not limited to the following aspects:

[0032] 1. A self-priming pump features multiple chambers with variable volumes. When designing the inlet and outlet check valves, one inlet check valve is placed per chamber, resulting in multiple inlet check valves for each chamber. However, due to structural reasons, the outlet check valve is typically located at the center of the pump, integrating multiple valves into one. During operation, these integrated outlet check valves operate in different states. For example, if there are two chambers, one may be absorbing water while the other is draining. In this case, one side of the integrated outlet check valve must be closed while the other side is open. Poorly designed integrated check valves can affect the pump's performance, leading to interactions between the open and closed areas.

[0033] 2. The outlet check valve generally opens and closes through elastic deformation of the rubber material. Water pressure is required to deform the rubber material, changing the closed state to the open state, or vice versa. If the outlet check valve is too thick or the material hardness is not properly selected, deformation of the valve may be difficult, resulting in a lag in opening or closing. Excessive lag can seriously affect the performance of the self-priming pump, reducing its efficiency.

[0034] 3. During the use of the water outlet one-way valve, lubricating oil may be involved. The lubricating oil will cause the rubber material of the water outlet one-way valve to swell. If the water outlet one-way valve is designed to be too thin or the structure is unreasonable, the swelling will cause the water outlet one-way valve to distort. The distorted water outlet one-way valve is not sealed tightly, which will eventually affect the efficiency of the self-priming pump.

[0035] 4. When the water outlet check valve is working, it opens and closes through the elastic deformation of the rubber material. If the design is poor, there may be excessive deformation stress, causing fatigue deformation or even cracking of the water outlet check valve. If permanent fatigue deformation occurs, the sealing performance will deteriorate and even cause the self-priming pump to stop working.

[0036] 5. The water outlet check valve generally forms a seal by fitting the surface with the corresponding bracket surface. The water outlet check valve is opened by the pressure of the liquid. When the water outlet check valve is working, it switches between the closed and open states continuously, and the switching speed between the closed and open states is very fast, up to 30 times per second. The roughness of the mating surface will directly affect the switching of the working state. For example, if the mating surface roughness is small, it will be difficult to open due to vacuum and adsorption. If the mating surface roughness is large, the mating surface will not fit tightly and the seal may be poor.

[0037] Based on this, the water outlet one-way valve structure 100 and the self-priming pump 10 of the following embodiments of the present application are designed and proposed to solve the above-mentioned technical problems.

[0038] like Figures 1 to 4 As shown, in one embodiment, a water outlet check valve structure 100 is provided for use in a self-priming pump 10. The self-priming pump 10 includes a valve seat 200 having a water outlet 210. The water outlet check valve structure 100 includes a diaphragm body 110 and a reinforcing rib 120 disposed on one side of the diaphragm body 110. The number of reinforcing ribs 120 and the number of water outlets 210 are both at least two, and each reinforcing rib 120 is spaced apart around the axis of the diaphragm body 110. The diaphragm body 110 located between two adjacent reinforcing ribs 120 forms a control valve body 130.

[0039] When the water outlet one-way valve structure 100 is installed on the valve seat 200, the side of the diaphragm body 110 away from the reinforcing rib 120 is in contact with the valve seat 200, and each control valve body 130 is arranged one-to-one corresponding to each water outlet 210 to close each water outlet 210, and each control valve body 130 can undergo elastic deformation to open the corresponding water outlet 210.

[0040] When the water outlet one-way valve structure 100 in the above embodiment is in use, each control valve body 130 is arranged in a one-to-one correspondence with each water outlet 210 on the valve seat 200, and a reinforcing rib 120 is provided between two adjacent control valve bodies 130, so that the strength of the diaphragm body 110 between the two adjacent control valve bodies 130 is increased. Therefore, when one of the two adjacent control valve bodies 130 is elastically deformed, the influence of the elastically deformed control valve body 130 on the sealing performance of the other control valve body 130 is reduced, that is, the mutual influence between the two adjacent control valve bodies 130 is reduced, ensuring that when one of the two corresponding adjacent control valve bodies 130 is in an open state, the other can be in a closed state, thereby improving the reliability of the water outlet one-way valve structure 100 and the efficiency of the self-priming pump 10.

[0041] The number of the reinforcing ribs 120 can be flexibly adjusted according to actual use needs. The water outlet 210 can be a single-hole water outlet structure or a multi-hole water outlet structure. Specifically in this embodiment, the number of the reinforcing ribs 120 is the same as the number of the water outlet 210.

[0042] like Figure 4 and Figure 5 As shown, optionally, each reinforcement rib 120 is spaced apart and located on the inner side of the outer wall of the diaphragm body 110. The outer wall of the diaphragm body 110 is provided with at least two notches 140, each correspondingly located on the extension line of each reinforcement rib 120. In this way, the outer edges of two adjacent control valve bodies 130 are disconnected at the notches 140, further reducing the mutual influence between the two adjacent control valve bodies 130, ensuring that the two adjacent control valve bodies 130 can be opened and closed independently, and improving the reliability of the water outlet one-way valve structure 100.

[0043] The shape and length of the notches 140 can be flexibly adjusted according to actual usage needs. Specifically, in this embodiment, the notches 140 are U-shaped. The notches 140 extend throughout the diaphragm body 110 along its axis. The number of notches 140 is the same as the number of ribs 120. Each rib 120 extends radially along the diaphragm body 110. Each rib 120 is spaced apart and corresponds to each notch 140.

[0044] like Figure 4 and Figure 5 As shown, optionally, a raised portion 150 is provided on the side of the diaphragm body 110 where the reinforcing ribs 120 are provided. The raised portion 150 is located in the middle of the diaphragm body 110. One end of each reinforcing rib 120 is connected to the outer sidewall of the raised portion 150, and the other end extends toward the outer sidewall of the diaphragm body 110. In this way, the raised portion 150 not only enhances the strength of the middle portion of the diaphragm body 110, but also separates the inner sides of each control valve body 130. This allows the elastic deformation of each control valve body 130 to primarily occur on the outer side, minimizing the mutual influence between the control valve bodies 130 and improving the reliability of the water outlet check valve structure 100.

[0045] Specifically, in this embodiment, the raised portion 150 is cylindrical in shape. It is coaxially arranged with the diaphragm body 110. The diaphragm body 110, the reinforcing ribs 120, and the raised portion 150 are all made of rubber and integrally formed. The side of the raised portion 150 facing away from the diaphragm body 110 serves as a pressing point for pressing the water outlet check valve structure 100 against the valve seat 200.

[0046] The thickness of the diaphragm body 110 and the surface roughness of the diaphragm body 110 can be flexibly adjusted according to actual needs.

[0047] like Figure 6 As shown, in one embodiment, the thickness of the diaphragm body 110 (eg Figure 6 The thickness (shown in B) is 0.6 mm to 1.0 mm. Thus, the thickness of the diaphragm body 110 is reasonably designed, preventing the diaphragm body 110 from being twisted and deformed when swelling occurs due to excessive thickness. This deformation could result in a poor seal of the water outlet check valve structure 100 and affect the efficiency of the self-priming pump 10. Furthermore, the diaphragm body 110 is prevented from causing difficulty in deforming the control valve body 130 due to excessive thickness, leading to a delay in opening or closing the water outlet 210 and affecting the efficiency of the self-priming pump 10. This improves the reliability of the water outlet check valve structure 100.

[0048] Specifically in this embodiment, the thickness of the diaphragm body 110 can be set to 0.7 mm, 0.8 mm or 0.9 mm.

[0049] In one embodiment, the roughness of the side of the diaphragm body 110 away from the reinforcing rib 120 is Ra0.4 to Ra0.8. Thus, the roughness of the side of the diaphragm body 110 away from the reinforcing rib 120 is rationally designed, thereby avoiding the problem of difficulty in opening the water outlet 210 due to a small roughness of the diaphragm body 110 and the problem of loose sealing of the control valve body 130 due to a large roughness of the diaphragm body 110, thereby improving the reliability of the water outlet check valve structure 100.

[0050] like Figure 1 and Figure 2 As shown, in one embodiment, a self-priming pump 10 is provided, comprising a water inlet and outlet cover 300 and the water outlet one-way valve structure 100 of any of the above-described embodiments. The water inlet and outlet cover 300 is mounted on one side of the valve seat 200 and presses the water outlet one-way valve structure 100 against the valve seat 200. Thus, by pressing the water inlet and outlet cover 300 against the water outlet one-way valve structure 100, the water outlet one-way valve structure 100 is tightly attached to the valve seat 200 and forms a one-way seal, thereby improving the reliability and assembly convenience of the self-priming pump 10.

[0051] like Figure 3 、 Figure 7 and Figure 8 As shown, the valve seat 200 optionally includes a first positioning portion 220. The water outlet one-way valve structure 100 includes a second positioning portion 160 that cooperates with the first positioning portion 220. In this way, the valve seat 200 can position the water outlet one-way valve structure 100 through the first positioning portion 220 and the second positioning portion 160, ensuring that the water outlet one-way valve structure 100 is precisely assembled to the valve seat 200, ensuring that each control valve body 130 is provided in a one-to-one correspondence with each water outlet 210, and separately controlling the opening and closing of each water outlet 210, thereby improving the reliability of the self-priming pump 10.

[0052] Specifically, in this embodiment, one of the first positioning portion 220 and the second positioning portion 160 is configured as a positioning protrusion, and the other is configured as a positioning groove that cooperates with the positioning protrusion. The outer contour of the positioning protrusion matches the inner contour of the positioning groove. The positioning protrusion can be configured as a triangle, a five-pointed star, or other shapes that uniquely position the water outlet check valve structure 100.

[0053] Specifically in this embodiment, the water outlets 210 are arranged at intervals on the outer side of the first positioning portion 220 around the axis of the first positioning portion 220 .

[0054] Such as 2 and Figure 3 As shown, the water outlet check valve can optionally be provided with a third positioning portion 170. The water inlet and outlet cover 300 can be provided with a fourth positioning portion 310 that cooperates with the third positioning portion 170. In this way, the water outlet check valve structure 100 can position the water inlet and outlet cover 300 via the third positioning portion 170 and the fourth positioning portion 310, ensuring that the water inlet and outlet cover 300 can accurately and reliably press the water outlet check valve structure 100, thereby improving the reliability of the self-priming pump 10.

[0055] Specifically in this embodiment, one of the first positioning portion 220 and the second positioning portion 160 is configured as a positioning protrusion, and the other is configured as a positioning hole that is positioned and matched with the positioning protrusion.

[0056] like Figure 1 and Figure 2As shown, in one embodiment, the self-priming pump 10 further includes a diaphragm support 400, a main diaphragm 500, a water inlet check valve structure 600, and a drive assembly 700. The diaphragm support 400 is used to press the main diaphragm 500 against the side of the valve seat 200 away from the water inlet and outlet cover 300. The main diaphragm 500 and the valve seat 200 cooperate to form at least two chambers 510. The valve seat 200 is also provided with at least two water inlets 230. Each chamber 510 is in one-to-one communication with each water inlet 230 and each water outlet 210. There are at least two water inlet check valve structures 600, each of which is installed at each water inlet 230. The drive assembly 700 is in driving connection with the main diaphragm 500 to cause the volume of each chamber 510 to change. Thus, when the volume of the chamber 510 increases to generate a negative pressure, the water inlet check valve structure 600 corresponding to the chamber 510 opens, and gas or liquid flows into the chamber 510 from the water inlet 230 under the action of the external atmospheric pressure. At this time, the control valve body 130 corresponding to the chamber 510 is closed, and the gas or liquid in the chamber 510 cannot be discharged from the water outlet 210. When the volume of the chamber 510 decreases to generate a positive pressure, the pressure in the chamber 510 is greater than the external pressure at the water inlet 230. The water inlet check valve structure 600 corresponding to the chamber 510 closes, and the control valve body 130 corresponding to the chamber 510 opens under the action of the pressure, and the gas or liquid in the chamber 510 cannot be discharged from the water outlet 210.

[0057] The driving assembly 700 may be configured as any structure in the prior art that can drive the volume of each chamber 510 in the self-priming pump 10 to change.

[0058] Specifically in this embodiment, the water inlet and outlet cover 300 is provided with a water inlet joint and a water outlet joint. Each water inlet 230 on the valve seat 200 is connected to the water inlet joint. Each water outlet 210 on the valve seat 200 is connected to the water outlet joint.

[0059] like Figure 1 and Figure 2As shown, the self-priming pump 10 optionally further includes a fixed bracket 800, which is mounted on the side of the diaphragm bracket 400 away from the valve seat 200. The drive assembly 700 includes a motor 710 mounted on the fixed bracket 800, an eccentric 720 drivingly connected to the output shaft of the motor 710, and a swing bracket 730 obliquely mounted on the eccentric 720. The swing bracket 730 is drivingly connected to the end of the main diaphragm 500 away from the valve seat 200. Thus, when the self-priming pump 10 is in use, the motor 710 drives the eccentric 720 to rotate via the output shaft. The eccentric 720 drives the swing bracket 730 to swing, which in turn drives the end of the main diaphragm 500 away from the valve seat 200 to move in and out and up and down, causing the volume of each chamber 510 to change. This change in the volume of each chamber 510 allows fluid to be continuously drawn in and out, thereby improving the practicality of the self-priming pump 10.

[0060] It should be noted that the swing bracket 730 is obliquely installed on the eccentric wheel 720, which means that when the swing bracket 730 is installed on the eccentric wheel 720, the central axis of the swing bracket 730 is set at an angle to the central axis of the eccentric wheel 720.

[0061] Specifically, in this embodiment, the chambers 510 are evenly distributed around the motor 710. Under the action of the motor 710, eccentric wheel 720, and swing bracket 730, the chambers 510 alternately compress and expand. Consequently, the corresponding states of the control valve bodies 130 in the water outlet one-way valve structure 100 are inconsistent. For example, the control valve bodies 130 in some locations are open, while in others they are closed. Furthermore, the control valve bodies 130 do not interfere with each other.

[0062] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0063] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0064] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0065] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0066] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0067] It should also be understood that when explaining the connection relationship or positional relationship of elements, even if not explicitly described, the connection relationship and positional relationship should be interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately," "approximately," or "substantially" can mean within one or more standard deviations, which is not limited here.

[0068] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A water outlet one-way valve structure, applied to a self-priming pump (10), wherein the self-priming pump (10) comprises a valve seat (200) provided with a water outlet (210), characterized in that: The water outlet one-way valve structure (100) comprises a diaphragm body (110) and a reinforcing rib (120) arranged on one side of the diaphragm body (110), the number of the reinforcing ribs (120) and the number of the water outlets (210) are both at least two, the reinforcing ribs (120) are arranged at intervals around the axis of the diaphragm body (110), and the diaphragm body (110) located between two adjacent reinforcing ribs (120) forms a control valve body (130); When the water outlet one-way valve structure (100) is installed on the valve seat (200), the side of the diaphragm body (110) away from the reinforcing rib (120) is in contact with the valve seat (200), and each of the control valve bodies (130) is arranged in a one-to-one correspondence with each of the water outlets (210) to close each of the water outlets (210), and each of the control valve bodies (130) can undergo elastic deformation to open the corresponding water outlet (210).

2. The water outlet one-way valve structure according to claim 1, characterized in that: Each of the reinforcing ribs (120) is spaced apart and located on the inner side of the outer side wall of the diaphragm body (110). The outer side wall of the diaphragm body (110) is provided with at least two notches (140). Each of the notches (140) is located one by one on the extension line of each of the reinforcing ribs (120).

3. The water outlet one-way valve structure according to claim 1, characterized in that: The diaphragm body (110) is provided with a protrusion (150) on one side of the reinforcing rib (120), and the protrusion (150) is located in the middle of the diaphragm body (110). One end of each reinforcing rib (120) is connected to the outer side wall of the protrusion (150), and the other end extends toward the outer side wall of the diaphragm body (110).

4. The water outlet one-way valve structure according to any one of claims 1 to 3, characterized in that: The thickness of the diaphragm body (110) is 0.6 mm to 1.0 mm.

5. The water outlet one-way valve structure according to any one of claims 1 to 3, characterized in that: The roughness of the side of the diaphragm body (110) away from the reinforcing rib (120) is Ra0.4 to Ra0.

8.

6. A self-priming pump, characterized in that: It comprises a water inlet and outlet cover (300) and a water outlet one-way valve structure (100) according to any one of claims 1 to 5, wherein the water inlet and outlet cover (300) is installed on one side of the valve seat (200) and presses the water outlet one-way valve structure (100) onto the valve seat (200).

7. The self-priming pump according to claim 6, characterized in that The valve seat (200) is provided with a first positioning portion (220), and the water outlet one-way valve structure (100) is provided with a second positioning portion (160) positioned and matched with the first positioning portion (220).

8. The self-priming pump according to claim 6, characterized in that The water outlet one-way valve is provided with a third positioning portion (170), and the water inlet and outlet cover (300) is provided with a fourth positioning portion (310) positioned and matched with the third positioning portion (170).

9. The self-priming pump according to any one of claims 6 to 8, characterized in that The self-priming pump (10) further comprises a diaphragm support (400), a main diaphragm (500), a water inlet check valve structure (600) and a drive assembly (700). The diaphragm support (400) is used to press the main diaphragm (500) against the side of the valve seat (200) away from the water inlet and outlet cover (300). The main diaphragm (500) cooperates with the valve seat (200) to enclose and form at least two chambers (510). The valve seat (200) is also provided with At least two water inlets (230), each of the chambers (510) is connected to each of the water inlets (230) and each of the water outlets (210) in a one-to-one correspondence, the number of the water inlet check valve structures (600) is at least two, each of the water inlet check valves is correspondingly installed at each of the water inlets (230), and the driving component (700) is transmission-connected to the main diaphragm (500) to change the volume of each of the chambers (510).

10. The self-priming pump according to claim 9, characterized in that The self-priming pump (10) further comprises a fixed bracket (800), wherein the fixed bracket (800) is mounted on a side of the diaphragm bracket (400) away from the valve seat (200), and the driving assembly (700) comprises a motor (710) mounted on the fixed bracket (800), an eccentric wheel (720) transmission-connected to the output shaft of the motor (710), and a swing bracket (730) obliquely mounted on the eccentric wheel (720), wherein the swing bracket (730) is transmission-connected to one end of the main diaphragm (500) away from the valve seat (200).

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