Low-noise large-flux diaphragm booster pump

Abstract

The low-noise large-flux diaphragm booster pump comprises a pump cavity upper cover and a pump cavity lower cover, a drainage cavity is arranged on the periphery of a water suction cavity in a surrounding mode, the pump cavity lower cover is provided with a first conduction mechanism and a second conduction mechanism, and the second conduction mechanism is arranged on the periphery of the first conduction mechanism in a surrounding mode. The second conduction mechanism is arranged on the outer edge of the first conduction mechanism in a surrounding mode, so that fluid absorbs water from the water absorption cavity and then enters the pressurization area through the first conduction mechanism located in the middle to be pressurized, the fluid pressurized in the pressurization area flows to the drainage cavity through the second conduction mechanism, and the path from the water absorption cavity to the drainage cavity is gradually expanded. The problem that in the prior art, a pressurizing area is located on the periphery, a drainage cavity is located in the middle state, fluid is excessively concentrated to block and squeeze, and large noise is generated is solved, meanwhile, the circulation path is long, the drainage cavity is located on the outer edge, the fluid can pass through large flow, and the overall flow of the booster pump is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of booster pumps, and particularly relates to a low-noise large-flux diaphragm booster pump. Background Art

[0002] Diaphragm booster pumps are applied in the field of large-flux household water purifiers. They use the "eccentric principle" to rotate and swing for boosting. In today's water purification industry, manufacturers directly adopt large-flux non-standard RO membranes for direct application in the installation and configuration of household water purifiers.

[0003] Especially, when the RO membrane is under high-pressure mass production of water, it must operate at a high speed of the motor, thus causing an increase in noise. Since the water production of the large membrane reaches 800 gallons per day, which is equivalent to nearly 2400 liters of water produced per day, a higher operating pressure is required during operation. This operating pressure is higher than the operating pressure of the traditional 70 psi (5 kg) membrane.

[0004] Due to the large-area Ro membrane with a water production of 800 gallons per day, the operating pressure must rise to a high pressure of 100 psi / inch (7 Kg) to produce more than 800 gallons of purified water per day. And the high pressure has a particularly significant impact on the service life of the diaphragm of the water pump.

[0005] Therefore, it is necessary to re-change the structure of the water pump to adapt to higher pressure requirements. Especially, the quality and safety of the diaphragm of the water pump under the extreme high pressure are severely tested.

[0006] In order to meet the requirements of the decibel parameter, its high requirement of ≤ 42 db further considers the service life of the water pump.

[0007] Under the limit requirement that the net decibel value of the water pump must not be ≥ 42 db, in order to increase the water production, it is necessary to increase the speed at a higher level. At a high pressure of 100 psi operating pressure, the water production of the RO membrane must be greater than 2 liters; the traditional low-speed RO booster pump can no longer meet these requirements. The motor must increase the speed to meet the water production, and the noise decibel value must be less than 42 ± 1 db of the factory requirement. To achieve the effect of ensuring both the water output and maintaining low-noise, and improving the service life of the diaphragm; the shipping standard of the large-flux water purification booster pump is set at 42 db as the single-machine acceptance standard.

[0008] In order to achieve this silent target value, it is necessary to break through the original structure for innovation to achieve the purpose of innovation.

[0009] Therefore, the traditional internal structure of the traditional water purification booster pump can no longer meet the applications of current water purification manufacturers, and cannot meet the requirements of non-standard large-flux water production RO membranes for the mainstream market demand of household water purifiers.

[0010] The water pump is applied in the RO membrane water production operation. Since such high-flux RO water purifiers have fast water production and convenient water intake after being introduced to the market, they are more acceptable to families. A high-flux household RO booster pump species has been invented to meet new requirements, new markets, and new varieties.

[0011] Therefore, in order to address the development trend and demand of high-flux water purification in the market, the present invention needs to develop the following structural inventions in response to the development trend of the large market.

[0012] The diaphragm booster pump is a mechanical structure that absorbs fluid and pressurizes and discharges the fluid, including an upper pump chamber cover, a lower pump chamber cover, a diaphragm, a pressurization area, a drainage chamber, and a water absorption chamber. In the prior art, the pressurization area is arranged in the middle, and the water absorption chamber is arranged on the outer periphery of the drainage chamber. When the fluid flux is relatively large, when the fluid is pressurized in the pressurization area and then discharged in the drainage chamber, due to the small space, fluid congestion is likely to occur, so relatively large noise will be generated. At the same time, since the drainage chamber is arranged in the middle and the set space is small, it is not conducive to the passage of a large flow of fluid. When there is a large demand for fluid passage, it is difficult to meet this demand, which is not conducive to increasing the overall flow rate of the booster pump. Summary of the Utility Model

[0013] The purpose of the present utility model is to provide a low-noise high-flux diaphragm booster pump to solve the above technical problems. The second conduction mechanism is arranged around the outer edge of the first conduction mechanism, so that the fluid is absorbed from the water absorption chamber and then enters the pressurization area through the first conduction mechanism in the middle for pressurization. Due to the setting of the first conduction mechanism, the fluid in the pressurized state is prevented from flowing back to the water absorption chamber. The fluid pressurized in the pressurization area flows to the drainage chamber through the second conduction mechanism, making the path from the water absorption chamber to the drainage chamber in a state of gradually expanding. This avoids the problem of relatively large noise caused by fluid congestion due to the pressurization area being on the outer periphery and the drainage chamber being in the middle in the prior art. At the same time, the flow path is relatively long and the drainage chamber is on the outer edge, enabling the fluid to pass through a relatively large flow rate and improving the overall flow rate of the booster pump.

[0014] To achieve the above utility model purpose, the technical solutions adopted by the present utility model are as follows:

[0015] A low-noise large-flow diaphragm booster pump, comprising an upper pump chamber cover, a lower pump chamber cover, and a diaphragm disposed below the lower pump chamber cover. A pressurization area is provided between the diaphragm and the lower pump chamber cover. A water suction chamber and a drainage chamber are provided between the upper pump chamber cover and the lower pump chamber cover. The water suction chamber is unidirectionally communicated with the pressurization area, and the drainage chamber is unidirectionally communicated with the pressurization area. The drainage chamber is disposed around the outer periphery of the water suction chamber. The lower pump chamber cover is provided with a first conduction mechanism for unidirectionally conducting the water suction chamber and the pressurization area, and a second conduction mechanism for unidirectionally conducting the pressurization area and the drainage chamber. The second conduction mechanism is disposed around the outer periphery of the first conduction mechanism. Among them, the second conduction mechanism is disposed around the outer edge of the first conduction mechanism, so that the fluid absorbs water from the water suction chamber and then enters the pressurization area through the first conduction mechanism in the middle for pressurization. Due to the setting of the first conduction mechanism, it is avoided that the fluid in the pressurized state flows back to the water suction chamber again. The fluid pressurized in the pressurization area flows to the drainage chamber through the second conduction mechanism, so that the state of the water suction chamber to the drainage chamber is a state of gradually expanding path, avoiding the problem of large noise caused by the over-concentration and blockage of the fluid in the prior art where the pressurization area is in the outer periphery and the drainage chamber is in the middle state. At the same time, the flow path is long and the drainage chamber is on the outer edge, so that the fluid can pass through a larger flow rate, improving the overall flow rate of the booster pump.

[0016] Preferably, the first conduction mechanism includes a plurality of first through holes provided on the lower pump chamber cover and a piston push block connected to the first through holes. The piston push block and the first through holes are provided to enable only unidirectional flow operation of the fluid between the water suction chamber and the pressurization area. During the water suction process, the fluid flows through the water suction chamber, the piston push block faces the pressurization area, and the fluid can push the piston push block and then flow to the pressurization area. When the fluid pressure in the pressurization area is relatively large, the piston push block fits with the surface of the first through hole, thereby blocking the fluid from flowing from the pressurization area to the water suction chamber. This control method is simple and easy to implement, and the setting of a plurality of first through holes and piston push blocks is beneficial to the transportation of a large flow rate of fluid.

[0017] Preferably, the first conducting hole includes a first mounting hole and a first circulation hole arranged around the periphery of the first mounting hole, the piston push block is provided with a first connecting column matched with the first mounting hole, and the piston push block is arranged toward the pressurization area. The number of the first circulation holes arranged in a single group is 10, and the first conducting mechanism is provided in 4 groups, and the first mounting hole and the first connecting column matched with the first mounting hole are provided, so that the piston push block is in a connected state, and the fluid between the water absorption chamber and the pressurization area is deformed when the first circulation hole passes through the piston push block, so that the water absorption chamber and the pressurization area are connected, and then the fluid is circulated to the pressurization area for pressurization, and the pressure of the fluid in the pressurization state is greater than the pressure of the fluid in the water absorption chamber, so that the piston push block is close to the first circulation hole, and the connection state between the water absorption chamber and the pressurization area is released, and the fluid is prevented from flowing back into the water absorption chamber. This control method is simple and easy to implement, and multiple first flow holes are arranged around the outer circumference of the first mounting hole, so that a larger flow rate can be achieved in the flow state to avoid blockage between fluids and generate large noise. In the non-flow state, due to the multiple first flow holes, it has multiple abutting closed ends to improve stability.

[0018] Preferably, one side of the piston push block along the axial direction is an inner concave surface. The piston push block with an inner concave surface along the axial direction allows the first conduction mechanism to deform to facilitate the passage of the fluid when it needs to be conducted to allow the fluid to flow, thereby increasing the flow rate of the fluid passing through and avoiding the blockage of the fluid with a large flow rate; when the first conduction mechanism is in a state where it needs to be closed, since one side of the piston push block along the axial direction is an inner concave surface, when the water-facing surface is subjected to a large water pressure, the piston push block with an inner concave surface along the axial direction is deformed into a flat state, better fits the first flow hole, and has a better sealing effect;

[0019] Preferably, the second conduction mechanism includes a plurality of second conduction holes arranged on the lower cover of the pump chamber and a drainage block connected to the second conduction holes. The second conduction mechanism is arranged on the outer edge of the lower cover of the pump chamber and is arranged around the first conduction mechanism; the drainage block and the second conduction hole are arranged so that the fluid can only be circulated in one direction between the pressurization area and the drainage chamber. During the drainage process, the fluid flows through the pressurization area, and the drainage block faces the drainage chamber. The fluid can push the drainage block and then flow to the drainage chamber. When the fluid pressure in the pressurization area is relatively large, the piston push block is fitted with the surface of the first conduction hole, thereby blocking the fluid from flowing from the pressurization area to the water absorption chamber. When the fluid pressure in the pressurization area is relatively large, the drainage block is pushed and the fluid can flow to the drainage chamber through the second conduction hole. This control method is simple and easy to implement. A plurality of first conduction holes and piston push blocks are arranged, and by setting the second conduction hole and drainage block, the fluid can be discharged from the pressurization area after being pressurized, which is conducive to the transportation of a large flow of fluid and avoids the blockage between fluids and the generation of large noise.

[0020] Preferably, the second conducting hole includes a second mounting hole and a second flow hole arranged around the outer periphery of the second mounting hole. The second conducting sheet is provided with a second connecting column matched with the second mounting hole, and the drain block is arranged toward the drain cavity. The number of the second flow holes arranged in a single group is 8, and the second conducting mechanism is provided in 4 groups. The second mounting hole and the second connecting column matched with the second mounting hole are provided, so that the drain block is in a connected state; when the fluid between the boosting area and the drain cavity passes through the second flow hole, the drain block is deformed to connect the boosting area and the drain cavity, and then the fluid flows to the drain cavity for discharge. This control method is simple and easy to implement. A plurality of second flow holes surrounding the outer periphery of the second mounting hole are provided, so that a larger flow rate can be provided in the flow state, avoiding blockage between the fluids and generating larger noise. The drain block is provided toward the drain cavity to avoid fluid reflux and affecting the boosting operation of the boosting area, thereby improving stability.

[0021] Preferably, the cross-sectional shape of the drainage block is an arc. The drainage block with an arc-shaped cross-sectional shape allows the second conduction mechanism to deform to facilitate the passage of the fluid when it needs to be conducted to allow the fluid to flow, thereby increasing the flow rate of the fluid passing through, thereby avoiding the blockage of the fluid with a large flow rate; when the second conduction mechanism is in a state where it needs to be closed, since the cross-sectional shape of the drainage block is an arc, when the water-facing surface is subjected to a large water pressure, the arc-shaped drainage block is deformed to a flat state, better fits the second flow hole, and achieves a better sealing effect.

[0022] Preferably, the number of the first conduction mechanisms is equal to the number of the second conduction mechanisms. The equal number makes the process of water absorption, pressurization and discharge continuous and can be completed from different positions of the lower cover of the pump chamber, thereby increasing the flow rate of the fluid, thereby avoiding the problem of blockage of a large flow of fluid and generating a large noise.

[0023] Preferably, the pump chamber upper cover is provided with a pressure relief valve, which can prevent the internal components of the diaphragm booster pump from being damaged when the pressure inside is higher than the working pressure, and can better complete the pressure relief operation from the location where the pressure relief valve is provided, thereby protecting the diaphragm booster pump.

[0024] Preferably, the pressure relief valve comprises a valve body connected to the upper cover of the pump chamber, a valve cap, and an elastic part arranged between the valve body and the valve cap;

[0025] The pump chamber upper cover is provided with a first cavity body providing a space for the valve cap to move, the first cavity body is provided with a conflicting platform that conflicts with the valve cap, a first communication port connected to the drainage chamber, and a second communication port connected to the water absorption chamber, and the second communication port is provided in the middle of the conflicting platform;

[0026] A contact ring is arranged above the first cavity, and a fitting portion that contacts the upper end of the contact ring is arranged on the outer edge above the valve cap. By providing an elastic portion, the valve cap is continuously in contact with the contact table, preventing the first communication port and the second communication port from being connected within the working pressure range. When the fluid pressure in the drainage cavity is relatively high, the valve cap moves to release the contact between the valve cap and the contact table, and the first connection port is connected to the second communication port, allowing the fluid in the drainage cavity with a higher pressure to flow back to the water absorption cavity from the second communication port, thereby completing pressure relief and protecting the internal components of the diaphragm booster pump. At the same time, by providing a contact ring and a fitting portion, the movement process of the valve cap is relatively stable, and the stability can also be maintained during the process of the fluid below continuously pressing on the valve cap, thus avoiding the problem of frequent jumping of the pressure relief valve.

[0027] The utility model has achieved beneficial technical effects:

[0028] The second conduction mechanism of the utility model is arranged around the outer edge of the first conduction mechanism, enabling the fluid to be absorbed from the water absorption cavity and enter the pressurization area through the first conduction mechanism in the middle for pressurization. Due to the arrangement of the first conduction mechanism, the fluid in the pressurized state is prevented from flowing back to the water absorption cavity. The fluid pressurized in the pressurization area flows to the drainage cavity through the second conduction mechanism, making the path from the water absorption cavity to the drainage cavity in a state of gradually expanding. This avoids the problem of excessive noise caused by the over-concentration and blockage of the fluid in the prior art where the pressurization area is on the outer periphery and the drainage cavity is in the middle. At the same time, the flow path is relatively long and the drainage cavity is on the outer edge, allowing the fluid to pass through a larger flow rate and improving the overall flow rate of the booster pump. Brief Description of the Drawings

[0029] Figure 1 The figure shows a structural schematic diagram of the utility model;

[0030] Figure 2 The figure shows a top view structural schematic diagram of the utility model;

[0031] Figure 3 The figure shows Figure 2 a sectional structural schematic diagram taken along the A-A direction of

[0032] Figure 4 The figure shows an exploded structural schematic diagram of the utility model;

[0033] Figure 5 The figure shows another exploded structural schematic diagram of the utility model;

[0034] Figure 6 The figure shows an exploded structural schematic diagram of the lower cover of the pump cavity of the utility model;

[0035] Figure 7 The figure shows another exploded structural schematic diagram of the lower cover of the pump cavity of the utility model;

[0036] Figure 8 The figure shows a schematic layout structure diagram of an old pressure relief valve;

[0037] Figure 9 The figure shows an exploded structure diagram of an old pressure relief valve;

[0038] Figure 10 The figure shows Figure 9 a sectional structure diagram taken along the B-B direction of

[0039] Figure 11 The figure shows a structure diagram of the pressure relief valve of the present utility model;

[0040] Figure 12 The figure shows a bottom view structure diagram of the pressure relief valve of the present utility model;

[0041] Figure 13 The figure shows Figure 12 a sectional structure diagram taken along the A-A direction of

[0042] Figure 14 The figure shows an exploded structure diagram of the pressure relief valve of the present utility model;

[0043] Figure 15 The figure shows another exploded structure diagram of the pressure relief valve of the present utility model;

[0044] Figure 16 The figure shows another exploded structure diagram of the pressure relief valve of the present utility model;

[0045] Figure 17 The figure shows a structure diagram of the upper cover of the pump chamber of the present utility model;

[0046] Figure 18 The figure shows Figure 17 a sectional structure diagram taken along the B-B direction of

[0047] Figure 19 The figure shows a schematic layout structure diagram of the flow passage.

[0048] Reference numerals

[0049] 1 - Upper cover of pump chamber; 2 - Lower cover of pump chamber; 3 - Diaphragm; 4 - Boosting area; 5 - Suction chamber; 6 - Drainage chamber; 7 - Pressure relief valve;

[0050] 21 - First conduction mechanism; 22 - Second conduction mechanism; 23 - Partition part; 211 - First guide through hole; 212 - Piston push block; 2111 - First installation hole; 2112 - First flow through hole; 2121 - First connecting column; 221 - Second guide through hole; 222 - Drainage block; 2211 - Second installation hole; 2212 - Second flow through hole; 2221 - Second connecting column;

[0051] 141 - Buffer; 11 - First cavity; 1410 - Base body; 1411 - First boss; 1412 - First notch; 1413 - Second boss; 1414 - Annular region; 143 - Flow passage; 144 - Pressure relief passage; 73 - Elastic part; 132 - Pressure relief valve cap; 1321 - Fitting part; 145 - Second cavity; 1451 - Fitting end; 74 - Contact block; 134 - Pressure relief valve upper cover; 1341 - Sealing end; 1342 - Fitting surface;

[0052] 71 - Valve body; 72 - Valve cap; 73 - Elastic part; 12 - Contact platform; 13 - First communication port; 14 - Second communication port; 15 - Contact ring; 721 - Fitting part; 16 - Water inlet; 17 - Water outlet. Detailed implementation manners

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will describe the specific implementation manners of the present invention with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other implementation manners can also be obtained.

[0054] The following will introduce the technical solutions of the present invention in detail with specific embodiments.

[0055] Refer to Figures 1 to 7, a low-noise and high-throughput diaphragm booster pump, comprising a pump chamber upper cover 1, a pump chamber lower cover 2, and a diaphragm 3 disposed below the pump chamber lower cover 2. A pressurization area 4 is provided between the diaphragm 3 and the pump chamber lower cover 2. A water suction chamber 5 and a drainage chamber 6 are provided between the pump chamber upper cover 1 and the pump chamber lower cover 2. The water suction chamber 5 is unidirectionally communicated with the pressurization area 4, and the drainage chamber 6 is unidirectionally communicated with the pressurization area 4. The drainage chamber 6 is disposed around the outer periphery of the water suction chamber 5. The pump chamber lower cover 2 is provided with a first conduction mechanism 21 for unidirectionally conducting the water suction chamber 5 and the pressurization area 4, and a second conduction mechanism 22 for unidirectionally conducting the pressurization area 4 and the drainage chamber 6. The second conduction mechanism 22 is disposed around the outer periphery of the first conduction mechanism 21. A plurality of the first conduction mechanisms 21 are provided in the middle of the pump chamber lower cover 2, and a plurality of the second conduction mechanisms 22 are provided on the outer edge of the pump chamber lower cover 2, and the second conduction mechanism 22 is obliquely corresponding to the first conduction mechanism 21. A partition 23 is provided between the drainage chamber 6 and the water suction chamber 5, and the partition 23 is connected to the pump chamber upper cover 2. The lower end of the pump chamber lower cover 2 is divided into a plurality of pressurization areas 4, and a set of obliquely arranged first conduction mechanisms 21 and second conduction mechanisms 22 are correspondingly provided for each single pressurization area 4. The second conduction mechanism 22 is disposed around the outer edge of the first conduction mechanism 21, so that the fluid absorbs water from the water suction chamber 5 and enters the pressurization area 4 through the first conduction mechanism 21 in the middle for pressurization. Due to the provision of the first conduction mechanism 21, the fluid in the pressurized state is prevented from flowing back to the water suction chamber 5. The fluid pressurized in the pressurization area 4 flows to the drainage chamber 6 through the second conduction mechanism 22, so that the state of the path from the water suction chamber 5 to the drainage chamber 6 is gradually expanding, avoiding the problem of large noise caused by the over-concentration and blockage of the fluid in the prior art where the pressurization area 4 is located on the outer periphery and the drainage chamber 6 is located in the middle. At the same time, the flow path is long and the drainage chamber 6 is located on the outer edge, enabling the fluid to pass through a larger flow rate and improving the overall flow rate of the booster pump.

[0056] The first conduction mechanism 21 includes a plurality of first conduction holes 211 disposed on the pump chamber lower cover 2, and a piston pusher 212 connected to the first conduction holes 211. The first conduction mechanism 21 is disposed in the middle of the pump chamber lower cover 2; the second conduction mechanism 22 is disposed on the outer edge of the pump chamber lower cover 2 and surrounds the first conduction mechanism 21, and the number of the second conduction mechanism 22 and the first conduction mechanism 21 is the same; a single first conduction mechanism 21 and a single second conduction mechanism 22 are disposed obliquely correspondingly. The piston push block 212 and the first conducting hole 211 are provided so that the fluid can only flow in one direction between the water absorption chamber 5 and the pressurization zone 4. During the water absorption process, the fluid flows through the water absorption chamber 5, and the piston push block 212 faces the pressurization zone 4. The fluid can push the piston push block 212 and then flow to the pressurization zone 4. When the fluid pressure in the pressurization zone 5 is relatively large, the piston push block 212 fits with the surface of the first conducting hole 211, thereby blocking the fluid from flowing from the pressurization zone 4 to the water absorption chamber 5. This control method is simple and easy to implement, and the provision of multiple first conducting holes 211 and piston push blocks 212 is conducive to the transportation of a larger flow of fluid.

[0057] The first conducting hole 211 includes a first mounting hole 2111 and a first flow hole 2112 arranged around the outer periphery of the first mounting hole 2111. The piston push block 212 is provided with a first connecting column 2121 matched with the first mounting hole 2111. The piston push block 212 is arranged toward the boost zone 4. The number of the first flow holes 2112 in a single group is 10, and 4 groups of first conducting mechanisms are provided. A first mounting hole 2111 and a first connecting column 2121 matching the first mounting hole 2111 are provided, so that the piston push block 212 is in a connected state. When the fluid between the water absorption chamber 5 and the pressurization zone 4 passes through the first flow hole 2112, the piston push block 212 is deformed to connect the water absorption chamber 5 with the pressurization zone 4, and then the fluid flows to the pressurization zone 4 for pressurization. The pressure of the fluid in the pressurized state is greater than the fluid pressure of the water absorption chamber 5, so that the piston push block 212 is close to the first flow hole 2112, and the connection state between the water absorption chamber 5 and the pressurization zone 4 is released, thereby preventing the fluid from flowing back into the water absorption chamber 5. This control method is simple and easy to implement, and a plurality of first flow holes 2112 are arranged around the outer circumference of the first mounting hole 2111, so that a larger flow rate can be achieved in the flow state to avoid blockage between fluids and generate large noise. In the non-flow state, due to the plurality of first flow holes 2112, it has a plurality of abutting closed ends to improve stability.

[0058] One side of the piston push block 212 in the axial direction is a concave surface. The piston push block 212 with a concave surface on one side in the axial direction enables the first conduction mechanism 21 to deform and facilitate the passage of fluid when conduction is required and fluid needs to flow through, increasing the flow rate of the passing fluid, thereby avoiding the blockage of a large flow of fluid; when the first conduction mechanism 21 is in a state to be closed, since one side of the piston push block 212 in the axial direction is a concave surface, when receiving a large water pressure on the water-facing surface, the piston push block 212 with a concave surface on one side in the axial direction becomes flat through deformation, better fitting the first through-hole 2112 and making the sealing effect better.

[0059] The second conduction mechanism 22 includes a plurality of second through-holes 221 provided on the lower cover 2 of the pump chamber and a drainage block 222 connected to the second through-holes 221. The second conduction mechanism 22 is provided on the outer edge of the lower cover 2 of the pump chamber and is arranged around the first conduction mechanism 21; by providing the drainage block 222 and the second through-holes 221, the fluid can only perform a one-way flow operation between the pressurization area 4 and the drainage chamber 5. During the drainage process, the fluid flows through the pressurization area 4, the drainage block 222 faces the drainage chamber 6, and the fluid can push the drainage block 222 and then flow into the drainage chamber 6. When the fluid pressure in the pressurization area 4 is relatively large, the piston push block 212 fits the surface of the first through-hole 211, thereby blocking the fluid from flowing from the pressurization area 4 to the water absorption chamber 5. When the fluid pressure in the pressurization area 4 is relatively large, it pushes the drainage block 222 and then enables the fluid to flow through the second through-hole 221 into the drainage chamber 6. This control method is simple and easy to implement. By providing a plurality of first through-holes 211 and piston push blocks 212 and by providing the second through-holes 221 and the drainage block 222, the fluid can be pressurized and discharged from the pressurization area 4, which is beneficial for transporting a large flow of fluid and avoiding the blockage between fluids and generating a large amount of noise.

[0060] The second via hole 221 includes a second mounting hole 2211 and a second flow hole 2212 disposed around the outer periphery of the second mounting hole 2211. The second conducting sheet body 222 is provided with a second connecting column 2221 that cooperates with the second mounting hole 2211, and the drainage block 222 faces the drainage cavity 6. The number of the second flow holes 2212 provided in a single group is 8, and 4 groups of second conducting mechanisms 22 are provided. The second mounting hole 2211 and the second connecting column 2221 that cooperates with the second mounting hole 2211 are provided to keep the drainage block 222 in a connected state. When the fluid between the pressurizing area 4 and the drainage cavity 6 passes through the second flow hole 2212, the drainage block 222 deforms to connect the pressurizing area 4 and the drainage cavity 6, and then the fluid flows to the drainage cavity 6 for discharge. This control method is simple and easy to implement. By providing a plurality of second flow holes 2212 around the outer periphery of the second mounting hole 2211, a larger flow rate can be achieved during the flow state, avoiding blockage and squeezing between fluids and generating excessive noise. By providing the drainage block 222 facing the drainage cavity, fluid backflow is avoided, which affects the pressurization operation of the pressurizing area 4 and improves stability.

[0061] One side of the drainage block 222 in the axial direction is a concave surface. The drainage block 222 with a concave surface on one side in the axial direction facilitates the deformation of the second conducting mechanism 22 when it needs to be conducted to allow fluid to pass through, increasing the flow rate of the passing fluid and thus avoiding blockage and squeezing of a large flow rate of fluid. When the second conducting mechanism 22 is in a state that needs to be closed, since one side of the drainage block 222 in the axial direction is a concave surface, when receiving a large water pressure on the water-facing side, the drainage block 222 with a concave surface on one side in the axial direction deforms into a flat state, better fitting the second flow hole 2212 and achieving a better sealing effect.

[0062] The number of the first conducting mechanisms 21 provided is equal to the number of the second conducting mechanisms 22 provided. By setting the equal number, the processes of water absorption, pressurization, and discharge are continuous and can be completed at different positions of the pump chamber lower cover 2, thereby increasing the flow rate of the passing fluid and avoiding the problem of blockage and squeezing of a large flow rate of fluid and generating excessive noise.

[0063] More than three low-pressure water inlet chamber entrances are convenient for quantitative water intake through the water inlet hole by eccentric rapid swing, so as to achieve the effect of equal water output, and avoid the water flow in the peripheral multiple water inlet chambers quickly entering the concentrated high-pressure chamber area in the middle in the prior art. Due to the limited single water outlet aperture, high-pressure fluctuation blockage is prone to occur. At the same time, the high-pressure water whistle sound generated by excessive concentration at the water outlet produced by unidirectional extrusion causes the audio value of the product body, which is also listed as a defective product factor in the prior art. The water whistle tower sound generated by the quantified water flow is loud and sharp, which causes the decibel amplification. Therefore, in the present technical solution, a low-pressure zone is set in the middle and a high-pressure zone is set on the periphery, which can effectively avoid the problem of large noise caused by blockage during fluid circulation in the prior art.

[0064] In the prior art, after several water chambers are shaken by eccentric rapid transmission, water volume is squeezed to a single outlet, resulting in crowding and squeezing. This technical solution can solve the problem of large decibel parameter value caused by excessive concentration of water volume in the single high-pressure chamber area in the middle after water enters the traditional peripheral low-pressure chamber through rapid transmission.

[0065] The pump chamber upper cover 1 is provided with a pressure relief valve 7. The pressure relief valve 7 is provided to prevent the internal components of the diaphragm booster pump from being damaged when the pressure inside is higher than the working pressure. The pressure relief operation can be better completed from the location where the pressure relief valve is provided to protect the diaphragm booster pump.

[0066] Figures 8 to 10 The figure is a technical scheme diagram of the old pressure relief valve. The specific technical scheme is as follows: the pressure relief valve 7 includes a valve body 71 connected to the pump chamber upper cover 1, a valve cap 72, and an elastic part 73 arranged between the valve body 71 and the valve cap 72;

[0067] The pump chamber upper cover 1 is provided with a first cavity 11 providing a moving space for the valve cap 72, the first cavity 11 is provided with a conflicting platform 12 that conflicts with the valve cap 72, a first communication port 13 communicating with the drainage chamber 6, and a second communication port 14 communicating with the water absorption chamber 5, and the second communication port 14 is provided in the middle of the conflicting platform 12;

[0068] A contact ring 15 is provided above the first cavity 11, and a fitting portion 721 is provided on the outer edge above the valve cap 72 to contact the upper end of the contact ring 15. The elastic portion 73 is provided to make the valve cap 72 and the contact platform 12 continuously contact each other, so as to prevent the first connecting port 13 and the second connecting port 14 within the working range from being connected. When the fluid pressure in the drainage cavity 6 is relatively high, the valve cap 72 is moved to release the contact between the valve cap 72 and the contact platform 12, and the first connecting port 13 and the second connecting port 14 are connected, so that the fluid in the drainage cavity 6 with a relatively high pressure can flow back from the second connecting port 14 to the water suction cavity 5, thereby completing the pressure relief and protecting the internal components of the diaphragm booster pump. The contact platform is provided to prevent the first connecting port 13 and the second connecting port 14 from being connected. The fluid entering the communication port 13 can be distributed around the abutment platform, so that when the fluid under the valve cap contacts the valve cap, the pressure received by the bottom of the valve cap is relatively uniform, so as to avoid the valve cap from jumping due to uneven force, and avoid the unstable operation of the pressure relief valve due to uneven pressure of the contacting fluid. At the same time, the abutment ring 15 and the fitting part 721 are arranged to make the movement process of the valve cap 72 relatively stable, and the process of the fluid under the valve cap 72 continuously applying pressure to the valve cap 72 can also maintain stability, thereby avoiding the problem of frequent jumping of the pressure relief valve. The elastic part is a spring.

[0069] The valve cap 72 is disposed around the outer surface of the valve body 71. The valve cap 72 is guided by the side wall of the valve body during movement, so that the valve cap moves more smoothly, avoiding the problem of the valve cap shaking during pressure relief and the problem of the valve cap shaking due to the effect of some fluid exceeding the design pressure.

[0070] A resisting block 74 is provided between the elastic portion 73 and the valve cap 72 to make the contact position between the elastic portion 73 and the valve cap 72 larger, so as to avoid the elastic force applied by the elastic portion 73 being too concentrated on the valve cap 72 to cause excessive local stress, thereby affecting the service life of the valve cap 72 or causing deformation of the valve cap 72.

[0071] The abutment block 74, the valve body 71, and the valve cap 72 are arranged in layers from the inside to the outside. The movement of the valve cap 72 drives the abutment block 74. During the movement of the abutment block 74, the moving direction of the side of the abutment block 74 is limited by the extending direction of the inner surface of the valve body 71. The inner surface of the valve cap 72 corresponds to the outer surface of the valve body 71, so that the process of the valve cap 72 moving and releasing pressure is more stable, and the operation stability of the movement of the valve cap 72 is improved.

[0072] The abutment platform 12 includes a first abutment platform 121 and a second abutment platform 122 disposed on one side of the first abutment platform 121. The second communication port 14 is disposed in the middle of the first abutment platform 121. The first abutment platform 121 and the second abutment platform 122 are disposed to facilitate the diversion of the fluid after entering the first cavity 11, improve the uniformity of the force applied by the fluid to the valve cap 72, and thus improve the operating stability of the pressure relief valve 7.

[0073] The second abutting platform 122 is arranged in pairs, and the second abutting platform 122 is arranged between the first abutting platform 121 and the first communication port 13. Among them, the first abutting platform 121, the second abutting platform 122, the first communication port 13, and the second communication port 14 all have the same axis of symmetry as the first cavity 11; after the fluid entering from the first communication port 13 is shunted through the second abutting platform 122, a relatively uniform pressure is formed in the first cavity 11, improving the uniform stress of the valve cap 72. When relieving pressure, the path through which the fluid passes is in a symmetric state, and the path lengths are the same, improving the stability of pressure relief.

[0074] The extension lines of the arrangement directions of the second abutting platforms 122 intersect with each other. The arranged second abutting platforms 122 have a certain included angle, which has a shunting effect on the fluid; after the fluid enters through the first communication port 13 and is shunted, the positions where the valve cap 72 contacts the fluid have relatively balanced stress points; avoiding the problem of uneven stress.

[0075] The upper end planes of the first abutting platform 121 and the second abutting platform 122 are flush with each other.

[0076] The pump chamber upper cover 1 is provided with a water inlet 16 communicating with the water suction chamber 5 and a water outlet 17 communicating with the water discharge chamber 6.

[0077] The above is the overall technical solution of using the old pressure relief valve under the technical solution of the low-noise large-flow diaphragm booster pump; in this improved technical solution, the improved pressure relief valve technical solution is adopted, and the pressure borne by the pressure valve upper cover is reduced. It is not easy to deform under the continuous spring elastic force. The water pump pressure value is not easy to drop. Effectively solve the problem of the closed pressure value decreasing after a long storage time. The specific technical solution is described as follows. The improved technical solution of the pressure relief valve is:

[0078] Such as Figures 11 to 19 , a diaphragm booster pump pressure relief valve structure, including a pump chamber upper cover 1, a water discharge chamber 6, a water suction chamber 5, a pressure relief valve 7 arranged on the pump chamber upper cover, and a pressure relief module arranged on the pump chamber upper cover 1 and cooperating with the pressure relief valve 7 to complete the pressure relief operation of the fluid. The pressure relief module includes a buffer zone 141 in contact with the pressure relief valve 7 and a first cavity 11 providing a moving space for the pressure relief valve 7; one end of the buffer zone 141 communicates with the water suction chamber 5, and the other end of the buffer zone 141 communicates with the water discharge chamber 6. By setting the buffer zone 141, after the fluid in the water discharge chamber 6 is buffered through the buffer zone 141, the pressure at the position where the fluid flowing to the water suction chamber 5 contacts the pressure relief valve tends to be uniform, avoiding the problems of frequent jumping and unstable pressure of the pressure relief valve 7. At the same time, by setting the first cavity 11, the moving space of the pressure relief valve 7 is increased, enabling the pressure relief valve 7 to have enough space to move during the pressure relief process, improving the stability of the operation.

[0079] The buffer 141 includes a seat body 1410, a plurality of first bosses 1411 spaced apart on the seat body 1410, a first notch 1412 disposed between the first bosses 1411, a second boss 1413 disposed in the middle of the seat body 1410, and an annular region 1414 disposed between the first boss 1411 and the second boss 1413 and communicating with the first notch 1412;

[0080] The upper end surfaces of the first bosses 1411 and the upper end surface of the second boss 1413 are both in contact with the pressure relief valve 7. The first notch 1412 is provided between the first bosses 1411 in the circumferential direction; the annular region 1414 communicates with the water absorption chamber 5 and the drainage chamber 6 in the pressure relief state. The seat body 1410, the first bosses 1411, the second boss 1413, the first notch 1412, and the annular region 1414 are provided. When the drainage chamber 6 is under a relatively large pressure, the fluid flows through the plurality of first notches 1412 to the annular region 1414, making the pressure of the fluid more balanced in all directions and acting on the pressure relief valve 7, so that the external force borne by the contact surface between the pressure relief valve 7 and the fluid is more uniform, avoiding the problem of frequent jumping caused by uneven force. When the pressure is relatively large, the fluid pushes the pressure relief valve 7 to move, releasing the contact state with the first bosses 1411 and the second boss 1413, thereby completing pressure relief.

[0081] The upper end surfaces of the first bosses 1411 and the upper end surface of the second boss 1413 are flush with each other. The first bosses 1411 and the second boss 1413 that are flush with each other make the upper surface relatively flat, improving the contact and fitting degree between the pressure relief valve 7 and the first bosses 1411 and the second boss 1413, thereby improving the sealing degree in the non-pressure relief state; at the same time, avoiding the problem of frequent jumping of the pressure relief valve caused by different pressures due to being in different planes.

[0082] A flow passage 143 communicating with the drainage chamber 6 is provided below the buffer 142. The flow passage 143 is disposed around the outer edge of the seat body 1410, and the flow passage 143 communicates with the first notch 1412. The flow passage 143 is disposed around the outer edge of the seat body 1410 and communicates with the first notch 1412, so that the flow passage 143 communicating with the drainage chamber 6 first circulates through the surrounding path to the first notch 1412, making the fluid pressure flowing to each first notch 1412 more uniform.

[0083] The buffer 141 further includes a pressure relief channel 144 communicating with the water absorption cavity 5. The pressure relief channel 144 is disposed through the second boss 1413, and the pressure relief channel 144 is coaxially disposed with the second boss 1413. The pressure relief channel 144 is disposed below the pressure relief valve 7; the pressure relief channel 144 is disposed inside the second boss 1413. When the pressure relief valve 7 is moved by a relatively large pressure to create a gap between the pressure relief valve 7 and the second boss 1413, the fluid flows through the annular region 1414 to above the second boss 1413 and flows to the water absorption cavity 5 through the pressure relief channel 144, thereby completing the pressure relief; flowing through the annular region 1414 to the pressure relief channel 144 in the middle is beneficial for the forces borne by the pressure relief valve 7 in all directions to be relatively balanced, avoiding the problem of frequent jumping.

[0084] The first boss 1411 and the second boss 1413 are coaxially disposed on the seat body 1410. The coaxial arrangement causes the first boss 1411 and the second boss 1413 to form a surrounding state, and the first notch 1412 is also in a surrounding state, making the pressure of the inflowing high-pressure fluid relatively uniform at each first notch 1412.

[0085] The pressure relief valve 7 includes an elastic part 73 connected to the pump chamber upper cover 1 and a pressure relief valve cap 132 disposed at one end of the elastic part 73. The lower end of the pressure relief valve cap 132 abuts against the upper end of the first boss 1411, the lower end of the pressure relief valve cap 132 abuts against the upper end of the second boss 1413, and the pressure relief valve cap 132 is disposed in the first cavity 11 in a matching manner. The elastic part 73 causes the pressure relief valve cap 132 to be in a state of abutting against the first boss 1411 and the second boss 1413 in the non-pressure relief state, enabling the fluid to flow through the first notch 1412 and the annular region 1414.

[0086] An engaging part 1321 is provided at the upper end edge of the pressure relief valve cap 132. The pressure relief module further includes a second cavity 145 providing a moving space for the pressure relief valve 7. The second cavity 145 is disposed above the first cavity 11, and an engaging end 1451 engaging with the engaging part 1321 is disposed below the second cavity 145. The first cavity 11 and the second cavity 145 are coaxially disposed, and the diameter of the first cavity 11 is smaller than the diameter of the second cavity 145; the cross-sectional shape of the pressure relief valve cap 132 is circular, and an engaging part 1321 is provided at the upper end edge of the pressure relief valve cap 132, and the engaging part 1321 engages with the engaging end 1451, improving the sealing performance between the pressure relief valve cap 132 and the second cavity 145, thereby improving the sealing degree of the pressure relief valve cap 132 and avoiding the problem of frequent jumping caused by insufficient sealing degree.

[0087] A resistance block 74 is provided between the elastic part 73 and the pressure relief valve cap 132, one end of the resistance block 74 is connected to the end of the elastic part 73, and the other end of the resistance block 74 is in resistance to the upper surface of the pressure relief valve cap 132. The elastic part 73 is a spring, and the resistance block 74 is provided to avoid direct connection with the end of the pressure relief valve cap 132, wherein the cross section of the resistance block 74 is a "convex" shape, so that the contact area between the pressure relief valve cap 132 and the resistance block 74 is larger, thereby improving the service life of the resistance block 74.

[0088] The pressure relief valve 7 further comprises a pressure relief valve upper cover 134 connected to the elastic portion 73, and the pressure relief valve upper cover 134 is fixedly connected to the pump chamber upper cover 1;

[0089] A sealing end 1341 is disposed at the lower end of the pressure relief valve upper cover 134 , and a fitting surface 1342 that fits with the pump chamber upper cover 1 is disposed on the pressure relief valve upper cover 1341 .

[0090] A sealing end 1341 is provided. When the pressure relief valve cap 132 is lifted up, the upper end of the pressure relief valve cap 132 contacts the sealing end 1341 to prevent the fluid from flowing to the outside from where the sealing end 1341 is provided. At the same time, a fitting surface 1342 is provided on the pressure relief valve upper cover 134 to improve the tightness of the fitting between the pressure relief valve upper cover 134 and the pump chamber upper cover 1, thereby improving the overall sealing effect.

[0091] The pressure relief valve upper cover 134 is provided with a plurality of reinforcing ribs 1343, which enhance the mechanical strength of the pressure relief valve upper cover and prevent it from being deformed under continuous spring force.

[0092] When the closed pressure of the pressure regulating valve is adjusted to 170psi, the spring pressure only needs 5.7KG; compared with the old technical solution, the old technical solution is that when the closed pressure of the pressure regulating valve is adjusted to 170psi, the spring pressure needs 7.8KG, and the spring pressure value is reduced by 2.1KG, that is, the bearing pressure of the pump head and the pressure valve cover is reduced. It is not easy to deform under the continuous spring elastic force. The water pump pressure value is not easy to drop. It effectively solves the problem of the closed pressure value dropping after a long storage time.

[0093] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0094] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

[0095] The above has elaborated in detail on the embodiments of a low-noise large-flow diaphragm booster pump provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the core idea of the present utility model. It should be noted that for those of ordinary skill in the technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A low-noise, high-flux diaphragm booster pump, comprising a pump chamber upper cover (1), a pump chamber lower cover (2), and a diaphragm (3) arranged below the pump chamber lower cover (2); a boosting zone (4) is arranged between the diaphragm (3) and the pump chamber lower cover (2); a water suction chamber (5) and a drainage chamber (6) are arranged between the pump chamber upper cover (1) and the pump chamber lower cover (2); a partition (23) is arranged between the drainage chamber (6) and the water suction chamber (5); the water suction chamber (5) is unidirectionally connected to the boosting zone (4); and the drainage chamber (6) is unidirectionally connected to the boosting zone (4); the characteristic of the invention is that: The drainage chamber (6) is arranged around the outer periphery of the water absorption chamber (5); the pump chamber lower cover (2) is provided with a first conduction mechanism (21) that unidirectionally conducts the water absorption chamber (5) and the pressurization zone (4); and a second conduction mechanism (22) that unidirectionally conducts the pressurization zone (4) and the drainage chamber (6); the second conduction mechanism (22) is arranged around the outer periphery of the first conduction mechanism (21).

2. A low-noise, high-flux diaphragm booster pump according to claim 1, characterized in that: A plurality of the first conducting mechanism (21) and the second conducting mechanism (22) are provided; the number of the second conducting mechanism (22) and the number of the first conducting mechanism (21) are the same; and a single first conducting mechanism (21) and a single second conducting mechanism (22) are provided in an obliquely corresponding manner.

3. A low-noise, high-flux diaphragm booster pump according to claim 2, characterized in that: The first conduction mechanism (21) comprises a plurality of first conduction holes (211) arranged on the pump chamber lower cover (2), and a piston push block (212) connected to the first conduction holes (211); one side of the piston push block (212) along the axial direction is an inner concave surface.

4. A low-noise, high-flux diaphragm booster pump according to claim 2, characterized in that: The second conduction mechanism (22) comprises a plurality of second conduction holes (221) arranged on the pump chamber lower cover (2), and a drainage block (222) connected to the second conduction holes (221); one side of the drainage block (222) along the axial direction is an inner concave surface.

5. A low-noise, high-flux diaphragm booster pump according to claim 1, characterized in that: The pump chamber upper cover (1) is provided with a pressure relief valve (7).

6. A low-noise, high-flux diaphragm booster pump according to claim 5, characterized in that: The pump chamber upper cover (1) is provided with a pressure relief module cooperating with the pressure relief valve (7) to enable the fluid to complete the pressure relief operation, and the pressure relief module comprises a buffer zone (141) that contacts the pressure relief valve (7) and a first cavity (11) that provides a moving space for the pressure relief valve (7); one end of the buffer zone (141) is connected to the water absorption cavity (5), and the other end of the buffer zone (141) is connected to the drainage cavity (6).

7. A low-noise, high-flux diaphragm booster pump according to claim 6, characterized in that: The buffer zone (141) comprises a seat body (1410), a plurality of first bosses (1411) arranged at intervals on the seat body (1410), a first notch (1412) arranged between the first bosses (1411), a second boss (1413) arranged in the middle of the seat body (1410), and an annular zone (1414) arranged between the first boss (1411) and the second boss (1413) and connected to the first notch (1412); The upper end surface of the first boss (1411) and the upper end surface of the second boss (1413) both abut against the pressure relief valve (7).

8. A low-noise, high-flux diaphragm booster pump according to claim 7, characterized in that: The pressure relief valve (7) comprises an elastic portion (73) connected to the pump chamber upper cover (1), and a pressure relief valve cap (132) arranged at one end of the elastic portion (73), wherein the lower end of the pressure relief valve cap (132) abuts against the upper end of the first boss (1411), and the lower end of the pressure relief valve cap (132) abuts against the upper end of the second boss (1413).

9. A low-noise, high-flux diaphragm booster pump according to claim 8, characterized in that: The pressure relief valve (7) further comprises a pressure relief valve upper cover (134) connected to the elastic portion (73); the pressure relief valve upper cover (134) is fixedly connected to the pump chamber upper cover (1).

10. A low-noise, high-flux diaphragm booster pump according to claim 9, characterized in that: The pressure relief valve upper cover (134) is provided with a plurality of reinforcing ribs (1343).

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