Pump head damping structure

Abstract

The utility model discloses a pump head damping structure which comprises a shell, a suction cavity, a compression cavity, a discharge cavity and an energy storage cavity are formed in the shell, the suction cavity is sequentially communicated with the energy storage cavity through the compression cavity and the discharge cavity, a water inlet pipe opening and a water outlet pipe opening are formed in the shell, and a water outlet pipe opening is formed in the shell. A water inlet pipe opening is formed in the shell, a water outlet pipe opening is formed in the shell, the water inlet pipe opening is communicated with the suction cavity, the water outlet pipe opening is communicated with the energy storage cavity, a vibration reduction cavity is further formed in the shell, an elastic vibration damping piece is arranged between the vibration reduction cavity and the energy storage cavity, the elastic vibration damping piece is connected with the vibration reduction cavity in a sealed mode, and the elastic vibration damping piece is connected with the energy storage cavity in a sealed mode. The damping structure can solve the problem that the damping effect is reduced after the damping structure works for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm pumps for water purifiers, in particular to a vibration damping structure for a pump head. Background Art

[0002] The RO pump, also known as the RO booster pump, RO diaphragm pump, and reverse osmosis booster pump, is a type of DC diaphragm booster pump and is currently one of the core components of household pure water machines in the water purification industry. In the existing RO pump head structure, as the pump flow rate increases (the increase in flow rate is also accompanied by an increase in motor speed), the noise and pipeline vibration of the RO pump also increase. Although by improving the structure of the motor and the pump head, such as changing from the original three-chamber pump to a four-chamber pump to improve the pump head efficiency, and slightly reducing the motor speed can also improve the noise and vibration of the pump, the effect is not obvious.

[0003] In the prior art, such as the Chinese utility model patent with the publication number CN 214499367 U: a noise-reducing RO pump, one of the noise-reducing structures of its pump head is to use the convex points on the rubber pad to consume the energy of the water flow, thereby achieving the effect of eliminating water flow pulsation. However, this structure also has the following deficiencies: 1. There are many convex points on the rubber pad, which are difficult to process. 2. Under the long-term impact of water flow pulsation, the convex points will deform, and the vibration damping effect will be reduced in the later stage. Summary of the Utility Model

[0004] The utility model provides a vibration damping structure for a pump head, which can solve the problem that the vibration damping effect of the vibration damping structure decreases after long-term operation.

[0005] In order to solve the above technical problems, the utility model provides a vibration damping structure for a pump head, which is characterized by including:

[0006] A housing, an inhalation chamber, a compression chamber, a discharge chamber, and an energy storage chamber are arranged inside the housing. The inhalation chamber is sequentially communicated with the energy storage chamber through the compression chamber and the discharge chamber. An inlet water port and an outlet water port are arranged on the housing. The inlet water port is communicated with the inhalation chamber, and the outlet water port is communicated with the energy storage chamber. A vibration damping chamber is also arranged inside the housing. An elastic vibration damping member is arranged between the vibration damping chamber and the energy storage chamber. The elastic vibration damping member is hermetically connected to the vibration damping chamber and hermetically connected to the energy storage chamber.

[0007] As a preference of the above technical solution, the housing includes a lower housing and an upper housing. The inhalation chamber is arranged at the lower part of the lower housing. The elastic vibration damping member is arranged between the upper housing and the lower housing. The elastic vibration damping member and the upper part of the lower housing cooperate to form the energy storage chamber. The elastic vibration damping member and the upper housing cooperate to form the vibration damping chamber.

[0008] As an optimization of the above technical solution, the elastic vibration damping member is a sheet-shaped elastic vibration damping member.

[0009] As an optimization of the above technical solution, the outer edge of the elastic vibration damping member extends downward to form a first sealing protrusion, and a sealing groove that is in concave-convex fit with the first sealing protrusion is provided on the upper part of the lower housing.

[0010] As an optimization of the above technical solution, a third sealing protrusion is provided at the bottom of the sealing groove, and the elastic vibration damping member abuts against the third sealing protrusion.

[0011] As an optimization of the above technical solution, sealing recesses are provided between the two sides of the third sealing protrusion and the inner side surface of the sealing groove.

[0012] As an optimization of the above technical solution, a sealing surface is provided at the top of the elastic vibration damping member, a second sealing protrusion is provided at the lower part of the upper housing, the second sealing protrusion is in sealed connection with the sealing surface, and the position of the second sealing protrusion corresponds to the position of the sealing groove.

[0013] As an optimization of the above technical solution, the elastic vibration damping member is made of rubber material.

[0014] As an optimization of the above technical solution, a plurality of limiting protrusions are provided at the top inside the upper housing, and the limiting protrusions are arranged opposite to the elastic vibration damping member.

[0015] As an optimization of the above technical solution, a discharge cavity is provided inside the lower housing, the compression cavity and the discharge cavity are provided inside the lower housing, the suction cavity is communicated through the compression cavity and the discharge cavity, a partition plate is provided between the discharge cavity and the energy storage cavity, a communication hole is provided on the partition plate, and the discharge cavity and the energy storage cavity are communicated through the communication hole.

[0016] The present utility model provides a vibration damping structure for a pump head, which is characterized in that it includes: an inhalation chamber, a compression chamber, a discharge chamber and an energy storage chamber are arranged inside the housing, the inhalation chamber is sequentially communicated with the energy storage chamber through the compression chamber and the discharge chamber, an elastic vibration damping member is arranged between the energy storage chamber and the vibration damping chamber, and the elastic vibration damping member is hermetically connected to the vibration damping chamber, so that the vibration damping chamber is a sealed chamber, forming an air spring structure. Under the action of the vibration film of the diaphragm pump and several one-way valves, water flows in from the water inlet pipe, flows through the inhalation chamber and the energy storage chamber, and finally flows out from the water outlet pipe. When the water flows to the energy storage chamber, the water will impact the elastic vibration damping member, and the elastic vibration damping member cooperates with the vibration damping chamber to perform vibration damping treatment on the pulsating impact of the water, thereby achieving the effect of vibration damping and noise reduction; through the sealed connection between the elastic vibration damping member and the vibration damping chamber, the vibration damping chamber is a sealed chamber, which can replace the bumps on the rubber pad in the prior art to achieve the effect of vibration damping and noise reduction, and has a simple and reliable structure, is convenient for processing, and can work stably for a long time.

[0017] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model are specifically given below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structure schematic diagram of a vibration damping structure for a pump head in an embodiment of the present utility model;

[0019] Figure 2 is a three-dimensional structure schematic diagram of a vibration damping structure for a pump head in an embodiment of the present utility model;

[0020] Figure 3 is Figure 2 a partial enlarged view of A in

[0021] Figure 4 is a three-dimensional structure schematic diagram of the lower housing of a vibration damping structure for a pump head in an embodiment of the present utility model;

[0022] Figure 5 is a three-dimensional structure schematic diagram of the upper housing of a vibration damping structure for a pump head in an embodiment of the present utility model;

[0023] In the figure: 1. housing; 2. lower housing; 3. upper housing; 4. elastic vibration damping member; 101. water inlet; 102. water outlet; 201. suction chamber; 202. energy storage chamber; 203. sealing groove; 204. third sealing projection; 205. sealing recess; 206. partition plate; 207. communication hole; 208. discharge chamber; 209. compression chamber; 301. vibration damping chamber; 302. second sealing projection; 303. limiting projection; 401. first sealing projection; 402. sealing surface. Detailed implementation manners

[0024] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the present utility model.

[0025] See Figures 1 to 5 , the embodiment of the present utility model provides a pump head vibration damping structure, which is characterized by including:

[0026] A housing 1, inside which there are arranged a suction chamber 201, a compression chamber 209, a discharge chamber 208, and an energy storage chamber 202. The suction chamber 201 is sequentially communicated with the energy storage chamber 202 through the compression chamber 209 and the discharge chamber 208. A water inlet 101 and a water outlet 102 are arranged on the housing 1. The water inlet 101 is communicated with the suction chamber 201, and the water outlet 102 is communicated with the energy storage chamber 202. A vibration damping chamber 301 is further arranged inside the housing 1. An elastic vibration damping member 4 is arranged between the vibration damping chamber 301 and the energy storage chamber 202. The elastic vibration damping member 4 is hermetically connected to the vibration damping chamber 301 and hermetically connected to the energy storage chamber 202.

[0027] An embodiment of the present utility model provides a vibration damping structure for a pump head, which is characterized in that it includes: a housing 1, and an inhalation chamber 201, a compression chamber 209, a discharge chamber 208 and an energy storage chamber 202 are arranged inside the housing 1; the inhalation chamber 201 is sequentially communicated with the energy storage chamber 202 through the compression chamber 209 and the discharge chamber 208, and an elastic vibration damping member 4 is arranged between the energy storage chamber 202 and the vibration damping chamber 301, and the elastic vibration damping member 4 is hermetically connected to the vibration damping chamber 301, so that the vibration damping chamber 301 is a sealed chamber, forming an air spring structure. Under the action of the vibration film of the diaphragm pump and a number of one-way valves, water flows in from the water inlet 101, flows through the inhalation chamber 201 and the energy storage chamber 202, and finally flows out from the water outlet 102. When the water flows to the energy storage chamber 202, the water will impact the elastic vibration damping member 4, and the elastic vibration damping member 4 cooperates with the vibration damping chamber 301 to perform vibration damping treatment on the pulsating impact of the water flow, thereby achieving the effect of vibration damping and noise reduction; through the hermetic connection between the elastic vibration damping member 4 and the vibration damping chamber 301, the vibration damping chamber 301 is a sealed chamber, which can replace the bumps on the rubber pad in the prior art to achieve the effect of vibration damping and noise reduction, and has a simple and reliable structure, is easy to process, and can work stably for a long time.

[0028] In a further feasible implementation manner of this embodiment, the housing 1 includes a lower housing 2 and an upper housing 3. The inhalation chamber 201 is arranged at the lower part of the lower housing 2, and the elastic vibration damping member 4 is arranged between the upper housing 3 and the lower housing 2. The elastic vibration damping member 4 and the upper part of the lower housing 2 cooperate to form the energy storage chamber 202, and the elastic vibration damping member 4 and the upper housing 3 cooperate to form the vibration damping chamber 301.

[0029] In this embodiment, the housing 1 includes a lower housing 2 and an upper housing 3, and the elastic vibration damping member 4 is arranged between the upper housing 3 and the lower housing 2. During assembly, the elastic vibration damping member 4 is installed on the lower housing 2, and then the upper housing 3 is installed on the lower housing 2 to complete the assembly. The structure is simple and convenient for assembly, and the production efficiency can be improved.

[0030] In a further feasible implementation manner of this embodiment, the elastic vibration damping member 4 is a sheet-shaped elastic vibration damping member 4.

[0031] In this embodiment, the elastic vibration damping member 4 is a sheet-shaped elastic vibration damping member 4. When being impacted by the pulsating impact of the water flow, the sheet-shaped elastic vibration damping member 4 can more easily generate elastic deformation, so as to better cooperate with the vibration damping chamber 301 to absorb the pulsating impact of the water flow and further improve the vibration damping effect.

[0032] In a further implementable manner of this embodiment, the outer edge of the elastic vibration damping member 4 extends downward to form a first sealing protrusion 401, and a sealing groove 203 that is in concave-convex fit with the first sealing protrusion is provided on the upper part of the lower housing 2.

[0033] In this embodiment, the sealing groove 203 can play a positioning role. During assembly, the first sealing protrusion 401 is inserted into the sealing groove 203 to improve the assembly efficiency; in addition, during use, the sealing groove 203 can play a sealing role to ensure that when the elastic vibration damping member 4 is subjected to the pulsating impact of water flow, the water flow will not flow out from the connection between the lower housing 2 and the elastic vibration damping member 4, causing inconvenience in use. The sealing groove 203 can also play a limiting role to ensure that when the elastic vibration damping member 4 is subjected to the pulsating impact of water flow, the outer edge of the elastic vibration damping member 4 will not deviate from the installation position, ensuring the sealed connection between the elastic vibration damping member 4 and the vibration damping cavity 301, and the sealed connection between the elastic vibration damping member 4 and the energy storage cavity 202, thereby further ensuring the long-term stable operation of the vibration damping structure.

[0034] In a further implementable manner of this embodiment, a third sealing protrusion 204 is provided at the bottom of the sealing groove 203, and the elastic vibration damping member 4 abuts against the third sealing protrusion 204.

[0035] In this embodiment, a third sealing protrusion 204 is provided at the bottom of the sealing groove 203, and the first sealing protrusion 401 of the elastic vibration damping member 4 abuts against the third sealing protrusion 204. After assembly, the upper housing 3 and the lower housing 2 will squeeze the elastic vibration damping member 4, so that the third sealing protrusion 204 is in close fit with the first sealing protrusion 401, and the first sealing protrusion 401 generates a certain elastic deformation, thereby increasing the contact area between the first sealing protrusion 401 and the sealing groove 203, further improving the sealing effect and connection strength between the first sealing protrusion 401 and the sealing groove 203, and further ensuring the long-term stable operation of the vibration damping structure.

[0036] In a further implementable manner of this embodiment, there are sealing recesses 205 between the two sides of the third sealing protrusion 204 and the inner side surface of the sealing groove 203.

[0037] In this embodiment, there are sealing recesses 205 between the two sides of the third sealing protrusion 204 and the inner side surface of the sealing groove 203. After assembly, the upper housing 3 and the lower housing 2 will squeeze the elastic vibration damping member 4, causing the first sealing protrusion 401 to sink into the sealing recess 205, thereby further increasing the contact area between the first sealing protrusion 401 and the sealing groove 203, further improving the sealing effect and connection strength between the first sealing protrusion 401 and the sealing groove 203, and further ensuring that the vibration damping structure can work stably for a long time.

[0038] In a further feasible embodiment of this embodiment, a sealing surface 402 is provided at the top of the elastic vibration damping member 4, a second sealing protrusion 302 is provided at the lower part of the upper housing 3, the second sealing protrusion 302 is sealingly connected to the sealing surface 402, and the position of the second sealing protrusion 302 corresponds to the position of the sealing groove 203.

[0039] In this embodiment, the second sealing protrusion 302 is sealingly connected to the sealing surface 402, ensuring that the vibration damping cavity 301 is a sealed cavity, forming an air spring structure, which can better damp the pulsating impact of the water flow, and thus better achieve the effect of vibration damping and noise reduction.

[0040] In a further feasible embodiment of this embodiment, the elastic vibration damping member 4 is made of rubber material.

[0041] In this embodiment, the elastic vibration damping member 4 is made of rubber material. The rubber material has the advantages of corrosion resistance and long service life, can be effectively applied to the use environment of the pump head, and can further ensure that the vibration damping structure can work stably for a long time.

[0042] In a further feasible embodiment of this embodiment, a plurality of limiting protrusions 303 are provided on the inner top of the upper housing 3, and the limiting protrusions 303 are arranged opposite to the elastic vibration damping member 4.

[0043] In this embodiment, a plurality of limiting protrusions 303 are provided on the inner top of the upper housing 3, which can limit the distance of elastic deformation of the elastic vibration damping member 4, thereby avoiding excessive elastic deformation of the elastic vibration damping member 4 for a long time, resulting in damage to the elastic vibration damping member 4 and affecting its service life, and thus can further ensure that the vibration damping structure can work stably for a long time.

[0044] In a further feasible embodiment of the present embodiment, a compression chamber 209 and a discharge chamber 208 are provided in the lower housing 2. The suction chamber 201 is communicated with the discharge chamber 208 through the compression chamber 209. A partition plate 206 is provided between the discharge chamber 208 and the energy storage chamber 202. A communication hole 207 is provided on the partition plate 206. The discharge chamber 208 and the energy storage chamber 202 are communicated through the communication hole.

[0045] In this embodiment, a discharge chamber 208 is provided in the lower housing 2. The suction chamber 201 is communicated with the discharge chamber 208. A partition plate 206 is provided between the discharge chamber 208 and the energy storage chamber 202. A communication hole 207 is provided on the partition plate 206. The axial direction of the communication hole 207 faces the elastic vibration damping member 4 and the vibration damping chamber 301, so that the water flowing out of the communication hole 207 flows towards the elastic vibration damping member 4 and the vibration damping chamber 301, enabling the elastic vibration damping member 4 and the vibration damping chamber 301 to effectively perform vibration damping treatment on the water flowing out of the communication hole 207 and further improving the vibration damping effect.

[0046] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0047] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0048] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all of them should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A pump head vibration elimination structure, characterized in that: include: A shell, wherein a suction chamber, a compression chamber, a discharge chamber and an energy storage chamber are arranged inside the shell, wherein the suction chamber is connected with the energy storage chamber in sequence through the compression chamber and the discharge chamber, wherein a water inlet pipe port and a water outlet pipe port are arranged on the shell, wherein the water inlet pipe port is connected with the suction chamber, and the water outlet pipe port is connected with the energy storage chamber, wherein a vibration-damping chamber is further arranged inside the shell, wherein an elastic vibration-damping member is arranged between the vibration-damping chamber and the energy storage chamber, wherein the elastic vibration-damping member is sealedly connected with the vibration-damping chamber, and wherein the elastic vibration-damping member is sealedly connected with the energy storage chamber.

2. The pump head vibration elimination structure according to claim 1, characterized in that: The shell includes a lower shell and an upper shell, the lower portion of the lower shell is provided with the suction chamber, the elastic vibration absorber is provided between the upper shell and the lower shell, the elastic vibration absorber cooperates with the upper portion of the lower shell to form the energy storage chamber, and the elastic vibration absorber cooperates with the upper shell to form the vibration reduction chamber.

3. The pump head vibration elimination structure according to claim 2, characterized in that: The elastic vibration absorbing member is a sheet-shaped elastic vibration absorbing member.

4. The pump head vibration elimination structure according to claim 3, characterized in that: The outer edge of the elastic vibration absorbing member extends downward to form a first sealing protrusion, and the upper portion of the lower shell is provided with a sealing groove which is concave-convexly matched with the first sealing protrusion.

5. The pump head vibration elimination structure according to claim 4, characterized in that: A third sealing protrusion is arranged at the bottom of the sealing groove, and the elastic vibration absorbing member abuts against the third sealing protrusion.

6. The pump head vibration elimination structure according to claim 5, characterized in that: There are sealing recessed portions between the two sides of the third sealing protrusion and the inner side surface of the sealing groove.

7. The pump head vibration elimination structure according to claim 6, characterized in that: A sealing surface is arranged on the top of the elastic vibration-absorbing member, and a second sealing protrusion is arranged on the lower part of the upper shell body. The second sealing protrusion is sealingly connected to the sealing surface, and the position of the second sealing protrusion corresponds to the position of the sealing groove.

8. The pump head vibration elimination structure according to claim 1, characterized in that: The elastic vibration absorbing member is made of rubber.

9. The pump head vibration elimination structure according to claim 2, characterized in that: A plurality of limiting protrusions are arranged on the inner top of the upper shell body, and the limiting protrusions are arranged opposite to the elastic vibration absorbing member.

10. The pump head vibration absorbing structure according to claim 2, characterized in that: The compression chamber and the discharge chamber are arranged in the lower shell, the suction chamber is connected with the discharge chamber through the compression chamber, a partition plate is arranged between the discharge chamber and the energy storage chamber, a connecting hole is arranged on the partition plate, and the discharge chamber and the energy storage chamber are connected with each other through the connecting hole.

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