CN115653878A - Diaphragm pump and water purifier - Google Patents

Abstract

The application relates to a diaphragm pump and purifier, a diaphragm pump includes: a one-way valve having a drain chamber; the shell is used for containing the one-way valve and is provided with a water outlet cavity communicated with the drainage cavity, a plurality of flow guide ribs are uniformly distributed in the water outlet cavity, one end of each flow guide rib is connected to the side wall of the water outlet cavity, and each flow guide rib is intersected in the water outlet cavity. A purifier includes foretell diaphragm pump. Foretell diaphragm pump and purifier through a plurality of water conservancy diversion ribs of intracavity equipartition that goes out, and each water conservancy diversion rib will go out the water cavity and divide into a plurality of partition regions to make the rivers in the water cavity flow from each partition region, the water conservancy diversion rib can disperse the rivers flow direction, has avoided the bottom in rivers direct impact play water cavity, thereby reduces the vortex and reduces the rivers noise that flows in the diaphragm pump.

Description

Diaphragm pump and water purifier

Technical Field

The application relates to the technical field of water purification equipment, in particular to a diaphragm pump and a water purifier.

Background

In the process of purifying raw water by the water purifier, the diaphragm pump is used for providing certain pressure for the raw water, so that the raw water overcomes the resistance of the reverse osmosis membrane and efficiently flows through the reverse osmosis membrane, and the raw water is purified and filtered by the reverse osmosis membrane.

The existing diaphragm pump can generate certain vibration due to the operation of a motor in the operation process, and the friction noise and vortex of water flow are easily generated due to the unreasonable internal structure design of the diaphragm pump, so that the water flow and the water pressure of the diaphragm pump can be influenced, and the working efficiency of the diaphragm pump is low.

Disclosure of Invention

In view of the above, it is necessary to provide a diaphragm pump and a water purifier, which are directed to the problem that the conventional diaphragm pump is likely to generate frictional noise of water flow.

A diaphragm pump, comprising:

a check valve having a drain chamber;

the shell is used for containing the one-way valve and is provided with a water outlet cavity communicated with the drainage cavity, a plurality of flow guide ribs are uniformly distributed in the water outlet cavity, one end of each flow guide rib is connected to the side wall of the water outlet cavity, and each flow guide rib is intersected in the water outlet cavity.

Foretell diaphragm pump through a plurality of water conservancy diversion ribs of intracavity equipartition that goes out, and each water conservancy diversion rib will go out the water cavity and divide into a plurality of partition regions to make the rivers in the water cavity flow from each partition region, the water conservancy diversion rib can disperse the rivers flow direction, has avoided the bottom that rivers directly impact a water cavity, thereby reduces the vortex and reduces the rivers noise that flows in the diaphragm pump.

In one embodiment, each of the flow guide ribs is arc-shaped and has a concave arc surface and a convex arc surface located at different sides, and the convex arc surface of each flow guide rib faces the concave arc surface of another flow guide rib adjacent to the convex arc surface.

In one embodiment, a connecting line is led out from the intersection point position of each flow guide rib and the side wall of the water outlet cavity to the center of the water outlet cavity, the included angles a between every two adjacent connecting lines are equal, a =360/N, and N is the number of the flow guide ribs.

In one embodiment, tangent lines are respectively led out from the intersection point position of each flow guide rib and the side wall of the water outlet cavity along the flow guide rib and the side wall of the water outlet cavity, and an included angle B between the two tangent lines is 100-135 degrees.

In one embodiment, each of the flow guide ribs is arc-shaped and has a concave arc surface and a convex arc surface located at different sides, and the convex arc surface of each flow guide rib faces the convex arc surface of another flow guide rib adjacent to the convex arc surface.

In one embodiment, each of the flow guide ribs is S-shaped and has a concave arc surface and a convex arc surface located on the same side.

In one embodiment, the thickness of each flow guide rib is at least 1/3 of the depth of the water outlet cavity.

In one embodiment, the thickness of each flow guide rib is 8-16 mm.

In one embodiment, the other end of each flow guide rib intersects with the center of the water outlet cavity, and all the flow guide ribs and the shell are of an integrally formed structure.

In one embodiment, the housing further has a water inlet, and the one-way valve further has a water suction cavity, a water discharge hole and a water suction hole, wherein the water suction hole is communicated with the water inlet and the water suction cavity, and the water discharge hole is communicated with the water suction cavity and the water discharge cavity.

A water purifier comprises the diaphragm pump.

Foretell purifier, rivers in the play water cavity of diaphragm pump are followed each partition region and are flowed, and the water conservancy diversion rib can disperse the rivers flow direction, has avoided the bottom that rivers directly impact play water cavity to reduce the vortex and reduce the rivers noise that flows in the diaphragm pump.

Drawings

FIG. 1 is a schematic view of a diaphragm pump in one embodiment;

FIG. 2 is a schematic view of a check valve in the diaphragm pump of FIG. 1;

FIG. 3 is a top view of the housing of the diaphragm pump of FIG. 1;

FIG. 4 is a partial schematic view of the housing shown in FIG. 3;

FIG. 5 is a schematic view of a housing in another embodiment;

fig. 6 is a schematic view of a housing in yet another embodiment.

Reference numerals are as follows:

100. a housing; 101. a water outlet cavity; 102. a water inlet; 110. flow guide ribs; 110a, a concave arc surface; 110b, a convex arc surface; 111. a first flow guide rib; 111a, a first concave arc surface; 111b, a first convex arc surface; 112. a second flow guide rib; 112a and a second concave cambered surface; 112b and a second convex arc surface; 200. a one-way valve; 201. a drainage cavity; 202. a water suction cavity; 203. a drain hole; 204. a water suction hole; l1, a first connecting line; l2, a second connecting line; l3, a first tangent line; l4, second tangent line.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "initially", "connected", "secured", and the like are to be construed broadly and can include, for example, fixedly connected, releasably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1, an embodiment of a water purifier includes a diaphragm pump.

Specifically, the purifier includes the casing and locates inside water route board, diaphragm pump and the filter element group spare of casing etc. and form circulation circuit through the pipeline intercommunication between the above-mentioned each part to play the purification effect to the rivers in the water route. Wherein, the diaphragm pump is mainly used for providing power for the water flow operation in the water route. For example, the filter element assembly may be a reverse osmosis membrane having a certain resistance to water flow, and the diaphragm pump is disposed upstream of the reverse osmosis membrane to provide power for water flow through the reverse osmosis membrane, so that the water flow overcomes the resistance of the reverse osmosis membrane and efficiently flows through the reverse osmosis membrane.

Current diaphragm pump is at the operation in-process, because the motor operation can produce certain vibration to because diaphragm pump inner structure design is unreasonable, produce the frictional noise and the vortex of rivers easily, can influence the play water flow and the play water pressure of diaphragm pump, lead to the work efficiency of diaphragm pump lower.

Based on the above consideration, a diaphragm pump and purifier have been designed, through a plurality of water conservancy diversion ribs 110 of equipartition in a water cavity 101, and each water conservancy diversion rib 110 divide a water cavity 101 into a plurality of partition regions to make the rivers in a water cavity 101 flow from each partition region, water conservancy diversion rib 110 can the dispersion rivers flow direction, has avoided rivers directly to strike the bottom in a water cavity 101, thereby reduces the vortex and reduces the rivers noise that flows in the diaphragm pump.

Referring to fig. 1 and 2, the diaphragm pump in one embodiment includes a housing 100 and a check valve 200, the check valve 200 has a drain chamber 201, and the housing 100 is used for accommodating the check valve 200 and has a water outlet chamber 101 communicated with the drain chamber 201. Referring to fig. 3, a plurality of flow guiding ribs 110 are uniformly distributed in the water outlet cavity 101, one end of each flow guiding rib 110 is connected to the side wall of the water outlet cavity 101, and the flow guiding ribs 110 are intersected in the water outlet cavity 101.

It should be noted that, when the purifier is in a water purification state, the water flows into the interior of the casing 100 and flows into the one-way valve 200, and the water flows out to the discharge cavity after being pressurized in the one-way valve 200, and finally flows to the water outlet cavity 101 through the discharge cavity, so as to implement a function of pressurizing the water flow.

Here, the cross section of the outlet chamber 101 is circular, and the center of the outlet chamber 101 is the center of the cross section of the outlet chamber 101.

Foretell diaphragm pump through a plurality of water conservancy diversion ribs 110 of equipartition in a water cavity 101, and each water conservancy diversion rib 110 will go out water cavity 101 and divide into a plurality of partition regions to make the rivers in a water cavity 101 flow from each partition region, water conservancy diversion rib 110 can disperse the rivers flow direction, has avoided the bottom that rivers directly impact a water cavity 101, thereby reduces the vortex and reduces the rivers noise that flows in the diaphragm pump.

In this embodiment, the casing 100 has an opening at the bottom of the casing 100, and the check valve 200 is disposed at the opening and sealed with the opening to prevent water from flowing out through the gap between the casing 100 and the check valve 200. The check valve 200 and the housing 100 may be locked by inserting, clamping or bolting.

In some embodiments of the present application, referring to fig. 3 and fig. 5, each of the flow guiding ribs 110 is arc-shaped and has a concave arc surface 110a and a convex arc surface 110b located at different sides, and the convex arc surface 110b of each flow guiding rib 110 faces the concave arc surface 110a of another flow guiding rib 110 adjacent to the convex arc surface 110b.

Here, one end of each flow guiding rib 110 is connected to the side wall of the water outlet cavity 101, and the other end is located at the center of the water outlet cavity 101, and all the flow guiding ribs 110 are radially distributed at the center of the water outlet cavity 101. Through the above arrangement, the flow guide ribs 110 are arc-shaped, the concave-convex directions of all the flow guide ribs 110 are consistent, and the flow lines are smoother and more stable when water flows through the flow guide ribs 110, so that the generation of eddy currents is favorably reduced.

For example, referring to fig. 4, adjacent first flow guiding ribs 111 and second flow guiding ribs 112 are disposed in the water outlet cavity 101, the first flow guiding ribs 111 have a first concave arc surface 111a and a first convex arc surface 111b, and the first convex arc surface 111b is located on a side of the first flow guiding ribs 111 away from the first concave arc surface 111 a. The second flow guiding rib 112 has a second concave arc surface 112a and a second convex arc surface 112b, and the second convex arc surface 112b is located on a side of the second flow guiding rib 112 away from the second concave arc surface 112 a. The first convex arc surface 111b faces the second concave arc surface 112a, and the first convex arc surface 111b, the second concave arc surface 112a and the sidewall of the water outlet chamber 101 together form a partition area. The structure of the other adjacent flow guiding ribs 110 in the water outlet cavity 101 is the same as that described above, and will not be described herein again.

In order to study the influence of the shape of the flow guide ribs 110 on the noise and the vortex of the diaphragm pump in detail, simulation analysis is carried out on the arc-shaped flow guide ribs 110 and the linear flow guide ribs 110, and the arc-shaped flow guide ribs 110 and the linear flow guide ribs 110 find that the pressure drop can be reduced to 40% of that of the linear flow guide ribs 110, the vortex strength can be reduced to 70% of that of the linear flow guide ribs 110, the noise of the diaphragm pump is greatly reduced, and the efficiency of the diaphragm pump is improved.

In the present embodiment, the curvature of all the air guide ribs 110 is uniform. For example, referring to fig. 1, the curvature of the first concave arc surface 111a is the same as that of the second concave arc surface 112a, and the curvature of the first convex arc surface 111b is the same as that of the second convex arc surface 112 b. In other embodiments, the curvature of all the air guide ribs 110 may not be completely uniform. For example, referring to fig. 1, a portion of the flow guiding ribs 110 may have a larger curvature, and another portion of the flow guiding ribs 110 may have a smaller curvature, so that the flow guiding ribs 110 can better disperse the flow direction of the water.

In some embodiments of the present application, please refer to fig. 4, a connection line is led out from the intersection point position of each flow guiding rib 110 and the side wall of the water outlet cavity 101 to the center of the water outlet cavity 101, an included angle a between each two adjacent connection lines is equal, a =360/N, and N is the number of the flow guiding ribs 110.

Here, the included angle a between every two adjacent connecting lines, that is, the included angle between every two adjacent flow guide ribs 110. Through the arrangement, the guide ribs 110 are uniformly distributed in the water outlet cavity 101, so that water flow can be uniformly dispersed.

For example, referring to fig. 4, a first flow guiding rib 111 and a second flow guiding rib 112 are disposed in the water outlet cavity 101, a first connection line L1 is led out from an intersection point of the first flow guiding rib 111 and the side wall of the water outlet cavity 101, a second connection line L2 is led out from an intersection point of the second flow guiding rib 112 and the side wall of the water outlet cavity 101, and an included angle between the second connection line L2 and the first connection line L1 is a.

Preferably, referring to fig. 4, the number of the flow guiding ribs 110 is four, and the included angle a between every two adjacent connecting lines is 90 °. Thus, each flow guide rib 110 divides the water outlet cavity 101 into four separated regions, so that the water flow in the water outlet cavity 101 flows out from the four separated regions, and the water flow is prevented from directly impacting the bottom of the water outlet cavity 101.

In some embodiments of the present application, please refer to fig. 4, a tangent is respectively drawn from the intersection point of each of the flow guiding ribs 110 and the sidewall of the water outlet chamber 101 along the flow guiding ribs 110 and the sidewall of the water outlet chamber 101, and an included angle B between the two tangents is 100 ° to 135 °.

For example, referring to fig. 4, a first guiding rib 111 is disposed in the water outlet cavity 101, a first tangent L3 is drawn from an intersection point of the first guiding rib 111 and the sidewall of the water outlet cavity 101 along the first guiding rib 111, a second tangent L4 is drawn from an intersection point of the first guiding rib 111 and the sidewall of the water outlet cavity 101 along the sidewall of the water outlet cavity 101, and an included angle between the first tangent L3 and the second tangent L4 is B.

Here, if the included angle B between the two tangent lines is too small, the turbulent flow effect of the flow guide ribs 110 on the water flow is weakened; if the included angle B between the two tangent lines is too large, a vortex is easily generated at the included angle formed by the flow guiding rib 110 and the side wall of the water outlet cavity 101. Through the setting, the included angle B between the two tangent lines is in the optimal range, the diversion ribs 110 generate a turbulent flow effect on water flow, and the direct impact of the water flow on the wall surface of the water outlet cavity 101 is dispersed, so that the effects of reducing the eddy and reducing the noise are achieved.

In some embodiments of the present application, please refer to fig. 6, each of the flow guiding ribs 110 is arc-shaped and has a concave arc surface 110a and a convex arc surface 110b located at different sides, and the convex arc surface 110b of each of the flow guiding ribs 110 faces the convex arc surface 110b of another flow guiding rib 110 adjacent thereto.

Here, one end of each flow guiding rib 110 is connected to the side wall of the water outlet cavity 101, and the other end is located at the center of the water outlet cavity 101, and all the flow guiding ribs 110 are radially distributed at the center of the water outlet cavity 101. Through the arrangement, the flow guide ribs 110 are arc-shaped, and the concave-convex directions of two adjacent flow guide ribs 110 are opposite, so that each flow guide rib 110 generates a turbulent flow effect on water flow, and direct impact of the water flow on the wall surface of the water outlet cavity 101 is dispersed.

For example, referring to fig. 6 and 4, adjacent first flow guiding ribs 111 and second flow guiding ribs 112 are disposed in the water outlet cavity 101, the first flow guiding ribs 111 have a first concave arc surface 111a and a first convex arc surface 111b, and the first convex arc surface 111b is located on a side of the first flow guiding ribs 111 departing from the first concave arc surface 111 a. The second flow guiding ribs 112 have a second concave arc surface 112a and a second convex arc surface 112b, and the second convex arc surface 112b is located on a side of the second flow guiding ribs 112 away from the second concave arc surface 112 a. The first convex arc surface 111b faces the second convex arc surface 112b, and the first convex arc surface 111b, the second convex arc surface 112b and the sidewall of the water outlet chamber 101 together form a partition area.

In the present embodiment, the curvature of all the air guide ribs 110 is uniform. For example, referring to fig. 1, the curvature of the first concave arc surface 111a is the same as that of the second concave arc surface 112a, and the curvature of the first convex arc surface 111b is the same as that of the second convex arc surface 112 b. In other embodiments, the curvature of all the air guide ribs 110 may not be completely uniform. For example, referring to fig. 1, a portion of the flow guiding ribs 110 may have a larger curvature and another portion of the flow guiding ribs 110 may have a smaller curvature, so that the flow guiding ribs 110 may better disperse the water flow.

In some embodiments of the present application, please refer to fig. 3, each of the plurality of flow guiding ribs 110 is S-shaped and has a concave arc surface 110a and a convex arc surface 110b located on the same side.

It should be noted here that the concave-convex directions of two adjacent flow guide ribs 110 may be completely consistent or may not be consistent.

Through the arrangement, the diversion ribs 110 are S-shaped, and the turbulence effect of each diversion rib 110 on water flow can be enhanced.

In some embodiments of the present application, please refer to fig. 3, the thickness of each of the flow guiding ribs 110 is at least 1/3 of the depth of the water outlet cavity 101.

Here, if the thickness of the flow guiding rib 110 is too small, the flow guiding rib 110 cannot generate a turbulent flow effect on the water flow; if the thickness of the flow guiding ribs 110 is too large, the flow guiding ribs 110 can reduce the flow of the outlet water. Through the above arrangement, the thickness of the flow guide ribs 110 is controlled, so that the flow guide ribs 110 generate a turbulent flow effect on water flow, and the water flow is not influenced.

In the present embodiment, the thickness of all the flow guide ribs 110 is uniform. In other embodiments, the curvature of all the air guide ribs 110 may not be completely uniform. For example, referring to fig. 1, a portion of the flow guide ribs 110 has a larger thickness, and another portion of the flow guide ribs 110 has a smaller thickness, so that the flow guide ribs 110 can better disperse the flow direction of the water.

In some embodiments of the present application, please refer to fig. 3, the thickness of each of the flow guiding ribs 110 is 8mm to 16mm.

Through the arrangement, the thickness of the flow guide ribs 110 is in the optimal range, so that the flow guide ribs 110 generate a turbulent flow effect on water flow, and the water flow is not influenced.

In some embodiments of the present application, referring to fig. 3, the other end of each of the flow guiding ribs 110 intersects with the center of the water outlet cavity 101, and all of the flow guiding ribs 110 and the housing 100 are integrally formed.

Specifically, all the guide ribs 110 and the housing 100 may be formed as an integral structure by injection molding, so that the guide ribs 110 and the housing 100 are convenient to mount and process.

It should be noted that, in other embodiments, all the air guide ribs 110 and the outer shell 100 may also be a split structure, and all the air guide ribs 110 and the outer shell 100 are welded and fixed.

In this embodiment, the other ends of the flow guiding ribs 110 meet at the center of the water outlet cavity 101. In other embodiments, the other end of each flow guiding rib 110 may also meet at other positions in the water outlet cavity 101. In some embodiments of the present application, referring to fig. 1 and fig. 2, the housing 100 further has a water inlet 102, the one-way valve 200 further has a water suction cavity 202, a water discharge hole 203 and a water suction hole 204, the water suction hole 204 communicates with the water inlet 102 and the water suction cavity 202, and the water discharge hole 203 communicates with the water suction cavity 202 and the water discharge cavity 201.

It should be noted that drain chamber 201 and suction chamber 202 are located on different sides of check valve 200. When the purifier is in a water purification state, water flows into the interior of the housing 100 through the water inlet 102 and flows into the water suction cavity 202, the water flows out to the water drainage cavity 201 through the water drainage hole 203 after being pressurized in the water suction cavity 202, and finally flows to the water outlet cavity 101 through the water drainage cavity 201, so that the function of pressurizing the water flow is realized.

Specifically, check valve 200 includes valve body and case, and the middle part of valve body is equipped with the mounting hole that supplies the case to wear to establish, and the different sides of valve body are equipped with discharge chamber and suction chamber. The valve core is movably arranged on the valve body, and the opening and closing of the drain hole 203 can be realized by driving the valve core to move, so that the water suction cavity 202 and the drain cavity 201 are blocked or communicated.

For example, when the water purifier is not used, the valve core is located at the first position, the drain hole 203 is in a closed state, and the water suction cavity 202 and the drain cavity 201 are not communicated; when the water purifier is in a water purification state, the valve core is driven to be switched from the first position to the second position, the drain hole 203 is in an open state, the water suction cavity 202 is communicated with the drain cavity 201, and water flow in the water suction cavity 202 can flow into the drain cavity 201 through the drain hole 203 after being pressurized.

In this embodiment, the mounting hole is circular to fit the valve cartridge. In other embodiments, the mounting holes may also be square or other shapes. Here, the shape of the mounting hole is not particularly limited.

In this embodiment, the valve body and the valve core are of a split structure, and the valve body and the valve core are detachably connected. In other embodiments, the valve body and the valve core can be integrated, so that the valve body and the valve core are good in integrity and convenient to disassemble and assemble quickly.

According to some embodiments of the present disclosure, referring to fig. 1 to 6, an embodiment of a diaphragm pump includes a housing 100 and a check valve 200 disposed in the housing 100, the housing 100 has a water inlet 102 and a water outlet 101, the check valve 200 has a water suction cavity 202, a water discharge hole 203 and a water suction hole 204, the water suction hole 204 communicates with the water inlet 102 and the water suction cavity 202, the water discharge hole 203 communicates with the water suction cavity 202 and the water discharge cavity 201, and the water discharge cavity 201 communicates with the water outlet 101. A plurality of flow guiding ribs 110 are uniformly distributed in the water outlet cavity 101, one end of each flow guiding rib 110 is connected to the side wall of the water outlet cavity 101, and the other end of each flow guiding rib 110 is intersected at the center of the water outlet cavity 101.

The flow guiding ribs 110 are arc-shaped and have concave arc surfaces 110a and convex arc surfaces 110b located at different sides, and the convex arc surface 110b of each flow guiding rib 110 faces the concave arc surface 110a of another flow guiding rib 110 adjacent to the convex arc surface 110b. A connecting line is led out from the intersection point position of the flow guide ribs 110 and the side wall of the water outlet cavity 101 to the center of the water outlet cavity 101, the included angles A between every two adjacent connecting lines are equal, A =360/N, and N is the number of the flow guide ribs 110. Tangent lines are respectively led out from the intersection point position of the diversion ribs 110 and the side wall of the water outlet cavity 101 along the diversion ribs 110 and the side wall of the water outlet cavity 101, and the included angle B between the two tangent lines is 100-135 degrees.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (11)

1. A diaphragm pump, comprising:

a one-way valve (200) having a drain chamber (201);

the shell (100) is used for accommodating the check valve (200) and have with water outlet cavity (101) of drainage chamber (201) intercommunication, a plurality of water conservancy diversion ribs (110) of equipartition in water outlet cavity (101), each the one end of water conservancy diversion rib (110) connect in water outlet cavity (101)'s lateral wall, each water conservancy diversion rib (110) intersect in water outlet cavity (101).

2. The diaphragm pump according to claim 1, wherein each of the flow guiding ribs (110) is arc-shaped and has a concave arc surface (110 a) and a convex arc surface (110 b) located at different sides, the convex arc surface (110 b) of each flow guiding rib (110) faces the concave arc surface (110 a) of another flow guiding rib (110) adjacent thereto.

3. The diaphragm pump according to claim 2, wherein a connecting line is led out from the intersection point position of each flow guiding rib (110) and the side wall of the water outlet cavity (101) to the center of the water outlet cavity (101), the included angle a between every two adjacent connecting lines is equal, a =360/N, and N is the number of the flow guiding ribs (110).

4. A membrane pump according to claim 2, characterized in that tangents to the side walls of the outlet chamber (101) and the flow guiding ribs (110) are drawn from the intersection of each flow guiding rib (110) with the side wall of the outlet chamber (101), respectively, and the angle B between the tangents is 100 ° to 135 °.

5. The diaphragm pump according to claim 1, wherein each of the flow guiding ribs (110) is arc-shaped and has a concave arc surface (110 a) and a convex arc surface (110 b) located at different sides, and the convex arc surface (110 b) of each flow guiding rib (110) faces the convex arc surface (110 b) of another flow guiding rib (110) adjacent thereto.

6. A membrane pump according to claim 1, characterized in that each of the flow guiding ribs (110) is S-shaped with a concave arc surface (110 a) and a convex arc surface (110 b) located on the same side.

7. A membrane pump according to claim 1, characterized in that the thickness of each of the flow guiding ribs (110) is at least 1/3 of the depth of the outlet chamber (101).

8. The diaphragm pump according to claim 7, characterized in that the thickness of each of the flow guiding ribs (110) is 8-16 mm.

9. The diaphragm pump according to claim 1, wherein the other end of each flow guiding rib (110) meets at the center of the water outlet chamber (101), and all the flow guiding ribs (110) are formed integrally with the housing (100).

10. A membrane pump according to claim 1, characterized in that the housing (100) further has a water inlet (102), the one-way valve (200) further has a water suction chamber (202), a water drain hole (203) and a water suction hole (204), the water suction hole (204) communicating the water inlet (102) and the water suction chamber (202), the water drain hole (203) communicating the water suction chamber (202) and the water drain chamber (201).

11. A water purification machine comprising a membrane pump according to any one of claims 1-10.

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