Diaphragm pump with an alternating waterway structure

Abstract

The application discloses a diaphragm pump with an alternating waterway structure, which comprises a pump head body, an eccentric assembly and a rotating magnetic assembly. A booster cavity, a first water inlet cavity and a first water outlet cavity are arranged in the pump head body. The first water inlet cavity and the first water outlet cavity are connected with a first water inlet and a first water outlet respectively. The booster cavity is connected with the first water inlet cavity and the first water outlet cavity. The rotating magnetic assembly drives the eccentric assembly to change the volume of the booster cavity. The diaphragm pump further comprises a bidirectional driving motor and a water passing structure. The water passing structure is internally provided with a second water inlet cavity and a second water outlet cavity. The second water inlet cavity and the second water outlet cavity are connected with a second water inlet and a second water outlet respectively. A waterway, which is connected between the second water inlet cavity and the second water outlet cavity, is provided with a water sealing convex ring and a water sealing assembly for sealing or conducting the waterway at the water sealing convex ring. The bidirectional driving motor controls the alternating actions of the rotating magnetic assembly and the water sealing assembly. The diaphragm pump can control the connection or closure of two waterways, the pipeline of the whole drinking water system is simple, and the manufacturing cost is low.

Description

Technical Field

[0001] This invention relates to the field of fluid transport technology, and more specifically to a diaphragm pump with an alternating water path structure. Background Technology

[0002] For example, Japanese Patent Publication No. 2013-36350 (Document 1) discloses a related diaphragm pump. The diaphragm pump disclosed in Document 1 is integrated with an electric motor and includes a pump mechanism containing a diaphragm, a drive mechanism that converts the rotation of the electric motor into reciprocating motion and drives the pump mechanism, etc.

[0003] The diaphragm includes a cup-shaped deformed portion, the opening of which is closed by the pump body. The pump chamber is formed between the deformed portion and the pump body.

[0004] The pump mechanism includes an inlet valve and a discharge valve, and is arranged such that fluid is drawn into the pump chamber as the capacity of the pump chamber increases, and fluid is discharged from the pump chamber as the capacity of the pump chamber decreases.

[0005] The drive mechanism includes a reciprocating motion portion attached to a deformable portion of the diaphragm, and an input portion that rotates integrally with the rotating shaft of the motor, and is arranged such that the rotation of the input portion is converted into reciprocating motion, and the reciprocating motion portion moves back and forth.

[0006] The aforementioned patent is a design of a typical existing diaphragm pump. The principle is that the motor drives the eccentric mechanism to make eccentric movements, thereby squeezing or pulling the pressurization chamber of the diaphragm pump, and thus drawing water in or expelling it.

[0007] Currently, a diaphragm pump only has one inlet and outlet water path, and can only control the water flow on one water path. However, in drinking water systems, it is sometimes necessary to control the water flow on two water paths. This requires increasing the number of pipelines and related control valves, making the entire drinking water system more complex and increasing the manufacturing cost accordingly. Therefore, there is an urgent need for a diaphragm pump that can control two water paths. Summary of the Invention

[0008] The purpose of this invention is to provide a diaphragm pump with an alternating water path structure to solve the problems in the prior art.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0010] A diaphragm pump with an alternating water path structure includes a pump head body, an eccentric assembly, and a rotary magnetic assembly. The pump head body has a pressurization chamber, a first inlet chamber, and a first outlet chamber, which are respectively connected to a first inlet and a first outlet. The pressurization chamber is connected to the first inlet and the first outlet chamber through a unidirectional inlet-outlet water flow structure. The rotary magnetic assembly drives the eccentric assembly to change the volume of the pressurization chamber to draw in or pump out source water. The pump also includes a bidirectional drive motor and a water passage structure. The water passage structure has a second inlet chamber and a second outlet chamber, which are respectively connected to a second inlet and a second outlet. The water path connecting the second inlet chamber and the second outlet chamber forms a sealing ring and a sealing assembly that controls the sealing or conduction of the water path at the sealing ring. The two outputs of the bidirectional drive motor control the rotary magnetic assembly and the sealing assembly to operate alternately.

[0011] Optionally, the rotating magnetic assembly includes a bracket, a driving magnetic ring, a driven magnetic ring, and a rotating shaft. The bracket has a downward-curved middle section forming a continuous primary cavity and a secondary cavity. An eccentric seat is provided in the primary cavity, and a bearing is provided in the secondary cavity. The eccentric seat is connected to the rotating shaft, and the rotating shaft is connected to the inner ring of the bearing. The eccentric assembly is eccentrically connected to the eccentric seat. The driven magnetic ring is sleeved on the eccentric seat. A rotating seat is provided below the bracket, and the driving magnetic ring is sleeved on the rotating seat. A first screw is connected to the output end of the bidirectional drive motor. The first screw is threadedly connected to the rotating seat. The bidirectional drive motor rotates to drive the driving magnetic ring to move closer to or away from the driven magnetic ring and controls the driven magnetic ring to rotate or remain stationary. Positioning points are provided at the upper and lower ends of the first screw.

[0012] Optionally, the bracket is provided with a middle plate and a base at its upper and lower ends, respectively. The upper end of the middle plate is connected to the pump head body, and the lower end of the base is connected to the bidirectional drive motor. The rotating seat is placed in the inner cavity of the base. A first nut is embedded in the middle of the rotating seat, and a threaded hole matching the first screw is provided through the middle of the first nut.

[0013] Optionally, the water passage structure includes a valve seat and a bottom cover connected to the lower end of the bidirectional drive motor, a water sealing assembly located in the inner cavity of the valve seat, and a bottom cover and the lower end of the valve seat sealed together to form a second water inlet cavity.

[0014] Optionally, the water-sealing assembly includes a first spring, a second spring, an end cap, and a first control rod. The first control rod has a water-passing groove on its side wall and a sliding body that is slidably connected to the inner cavity of the valve seat at its upper end. The sliding body has a threaded hole in its middle. The lower output end of the bidirectional drive motor is connected to a second screw that matches the threaded hole. The upper half of the second screw is a smooth surface, and the lower half is threaded. One end of the first spring acts on the bidirectional drive motor, and the other end acts on the sliding body. One end of the second spring acts on the end cap, and the other end acts on the bottom cover. The bidirectional drive motor rotates, causing the sliding body to move up and down, and under the combined action of the first spring and the second spring, it forms a sealing water-sealing convex ring or controls the conduction of the water-sealing convex ring.

[0015] Optionally, the sliding body includes a slider and a control rod seat connected to each other. A second nut is embedded in the middle of the slider. A threaded hole matching the second screw is provided through the middle of the second nut. A positioning point is provided on the thread at the lower end of the second screw. A lower groove is provided in the middle of the control rod seat. A first sealing ring is circumferentially fitted. A guide groove is provided on the side wall of the valve seat. A protrusion adapted to the guide groove is provided on the side wall of the slider.

[0016] Optionally, a partition and a pumping diaphragm are pressed between the pump head body and the middle plate. The left end of the pumping diaphragm is recessed downward to form an extension section and constitute a pressurization chamber. The partition is provided with an inlet hole and an outlet hole that are connected to the pressurization chamber.

[0017] Optionally, the pump head body is provided with a negative pressure valve seat, the top of the negative pressure valve seat is provided with a valve cover, the negative pressure valve seat is provided with a vacuum chamber and a third water inlet chamber connected to the first water inlet, the vacuum chamber is connected to the first water inlet chamber through the water inlet channel, and a water sealing ring and a flow control component for controlling the sealing or conduction of the water path at the water sealing ring are formed on the water path connected to the third water inlet chamber and the vacuum chamber.

[0018] Optionally, the flow control assembly includes a second control rod, a third spring, and a sensing diaphragm. The sensing diaphragm is sealed and fixed between the negative pressure valve seat and the valve cover. The sensing diaphragm and the valve cover form an atmospheric cavity, and the valve cover is provided with an atmospheric vent. The second control rod has a flow limiting groove on its side wall. One end of the second control rod is connected to a pressure plate. The upper end of the pressure plate is fixedly connected to the sensing diaphragm, and the other end is sealed with a water-sealing sleeve through the lower end of the second control rod. One end of the third spring acts on the pressure plate, and the other end acts on the inner wall of the negative pressure valve seat. Under the combined action of the air pressure in the atmospheric cavity, the pressure in the vacuum cavity, and the third spring, the second control rod forms a flow control assembly that seals the water-sealing sleeve or controls the conduction of the water-sealing sleeve.

[0019] Optionally, the lower end of the second control rod is sealed to the water inlet by a second sealing ring, and the second sealing ring is set in the groove of the upper side wall of the third water inlet chamber.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. In this invention, based on the existing rotary magnetic diaphragm pump, the original unidirectional drive motor is replaced with a bidirectional drive motor. The output shaft above the bidirectional drive motor drives the rotary magnetic assembly to rotate, which in turn drives the eccentric assembly to perform eccentric motion. The eccentric rotation of the eccentric assembly changes the volume of the pressurization chamber, thereby drawing in and pumping out source water. A water passage structure is provided on the output shaft below the bidirectional drive motor. The water passage structure is equipped with a water sealing component for controlling the connection or blockage of the water passage between the second inlet and the second outlet. The bidirectional drive motor controls the alternating action of the rotary magnetic assembly and the water sealing component, thereby enabling the diaphragm pump to control the connection or blockage of two water passages. When applied to a drinking water system, it can control the hot water passage and the room temperature water passage separately, or control the pressurized source water passage and the unpressurized source water passage separately, without adding other pipelines and matching control valves to the drinking water system. The pipeline of the entire drinking water system will not become complicated, and the manufacturing cost will not increase accordingly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the general pump structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the flow control pump structure of the present invention;

[0024] Figure 3 for Figure 2 A schematic diagram of the vertical cross-sectional structure.

[0025] Reference numerals: 01-First inlet, 02-First inlet chamber, 03-First outlet chamber, 04-Baffle, 05-First outlet, 06-Outlet hole, 07-Pump diaphragm, 08-Push frame, 09-Driven magnetic ring, 10-Driven magnetic ring, 11-Rotating seat, 12-Second nut, 13-Smooth surface, 14-Guide groove, 15-Second screw, 16-Second outlet, 17-Control lever seat, 18-First control lever, 19-Second inlet chamber, 20-Second spring, 21-Bottom cover, 22-End cap, 23-Sealing ring, 24-Second outlet chamber, 25-Second inlet, 26-Valve seat, 27-First sealing ring, 28-Slider, 29-First spring, 30-Bidirectional drive motor Machine, 31-First screw, 32-First nut, 33-Outlet one-way diaphragm, 34-Pressure chamber, 35-Inlet one-way diaphragm, 36-Third sealing ring, 37-Pump head body, 38-Lower groove, 39-Negative pressure valve seat, 40-Vacuum chamber, 41-Valve cover, 42-Third spring, 43-Atmospheric vent, 44-Induction diaphragm, 45-Second control rod, 46-Second sealing ring, 47-Third inlet chamber, 48-Protrusion, 49-Inlet channel, 50-Flow limiting groove, 51-Pressure plate, 52-Sealing ring, 53-Eccentric seat, 54-Eccentric rod, 55-Rotating shaft, 56-Extension section, 57-Bearing, 58-Inlet hole, 59-Middle plate, 60-Bracket, 61-Base, 62-Water passage groove. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "longitudinal," "lateral," "horizontal," "inner," "outer," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] Example 1

[0030] A diaphragm pump with an alternating water path structure includes a pump head body 37, an eccentric assembly, and a rotary magnetic assembly. The pump head body 37 contains a pressurization chamber 34, a first inlet chamber 02, and a first outlet chamber 03. The first inlet chamber 02 and the first outlet chamber 03 are respectively connected to a first inlet 01 and a first outlet 05. The pressurization chamber 34 is connected to the first inlet chamber 02 and the first outlet chamber 03 through a unidirectional water flow structure. The rotary magnetic assembly drives the eccentric assembly to change the volume of the pressurization chamber 34, drawing in or... The pump also includes a bidirectional drive motor 30 and a water passage structure. The water passage structure has a second water inlet chamber 19 and a second water outlet chamber 24. The second water inlet chamber 19 and the second water outlet chamber 24 are respectively connected to the second water inlet 25 and the second water outlet 16. The water passage connecting the second water inlet chamber 19 and the second water outlet chamber 24 forms a water sealing ring 23 and a water sealing component that controls the sealing or conduction of the water passage at the water sealing ring 23. The two output ends of the bidirectional drive motor 30 control the alternating operation of the rotary magnetic component and the water sealing component.

[0031] In this embodiment, as Figure 1-3 As shown, based on the existing rotary magnetic diaphragm pump, the original unidirectional drive motor is replaced with a bidirectional drive motor 30. The output shaft above the bidirectional drive motor 30 drives the rotary magnetic assembly to rotate, which in turn drives the eccentric assembly to perform eccentric motion. Both the eccentric assembly and the rotary magnetic assembly are existing technologies. The eccentric rotation of the eccentric assembly changes the volume of the booster chamber, thereby drawing in and pumping out source water. A water passage structure is provided on the output shaft below the bidirectional drive motor 30. The water passage structure contains a water sealing assembly for controlling the connection or blockage of the water passage between the second inlet 25 and the second outlet 16. The bidirectional drive motor 30 controls the alternating action of the rotary magnetic assembly and the water sealing assembly, thereby enabling a single diaphragm pump to control two water passages. When applied to a drinking water system, the connection or closure of the water supply can be achieved by connecting the first inlet 01 and the second inlet 25 to the same water supply or to different water supply lines. As shown in the figure, the first inlet 01 can be connected to hot water or a non-pressurized water source, and the second inlet 25 can be connected to normal temperature water or a pressurized water source. Alternatively, the first inlet 01 and the second inlet 25 can be connected to hot water or normal temperature water simultaneously, and then transported to different pipelines. This allows for separate control of the hot water supply line, the normal temperature water supply line, or the pressurized water supply line and the non-pressurized water supply line. There is no need to add other pipelines and matching control valves to the drinking water system, so the piping of the entire drinking water system will not become complicated, and the manufacturing cost will not increase accordingly.

[0032] Example 2

[0033] Furthermore, the rotating magnetic assembly includes a bracket 60, a driving magnetic ring 10, a driven magnetic ring 09, and a rotating shaft 55. The bracket 60 has a downward recess in the middle to form a continuous primary cavity and a secondary cavity. An eccentric seat 53 is provided in the primary cavity, and a bearing 57 is provided in the secondary cavity. The eccentric seat 53 is connected to the rotating shaft 55, and the rotating shaft 55 is connected to the inner ring of the bearing 57. The eccentric assembly is eccentrically connected to the eccentric seat 53. The driven magnetic ring 09 is sleeved on the eccentric seat 53. A rotating seat 11 is provided below the bracket 60, and the driving magnetic ring 10 is sleeved on the rotating seat 11. A first screw 31 is connected to the output end of the bidirectional drive motor 30. The first screw 31 is threadedly connected to the rotating seat 11. The bidirectional drive motor 30 rotates to drive the driving magnetic ring 10 to move closer to or away from the driven magnetic ring 09 and control the driven magnetic ring 09 to rotate or remain stationary. Positioning points are provided at the upper and lower ends of the first screw 31.

[0034] Furthermore, the bracket 60 is provided with a middle plate 59 and a base 61 at its upper and lower ends, respectively. The upper end of the middle plate 59 is connected to the pump head body 37, and the lower end of the base 61 is connected to the bidirectional drive motor 30. The rotating seat 11 is placed in the inner cavity of the base 61, and a first nut 32 is embedded in the middle of the rotating seat 11. The first nut 32 has a threaded hole that matches the first screw 31. Specifically, the middle plate 59 is pressed and sealed between the pump head body 37 and the bracket 60, and the base 61 is connected between the bidirectional drive motor 30 and the bracket 60. The bracket 60 completely separates the eccentric seat 53 from the rotating seat 11, so that water above will not leak to the bottom of the middle plate 59, which has a good water-proof effect on the bidirectional drive motor 30. The first nut 32 is fixedly connected to the rotating seat 11. The first nut 32 has a thread that matches the first screw 31. The first screw 31 is fully threaded, so that the first nut 32 can rotate on the first screw 31.

[0035] The working principle of this embodiment is as follows: Figure 1As shown, in the initial state, a certain distance is set between the rotating seat 11 and the eccentric seat 53, so that the driving magnetic ring 10 cannot drive the driven magnetic ring 09 to rotate. When the bidirectional drive motor 30 rotates forward, since the first screw 31 can only rotate with the output shaft of the motor and cannot undergo vertical displacement, and the first screw 31 and the first nut 32 are threadedly connected, the first nut 32 will move upward, and the rotating seat 11 will also move upward along with it. When the driving magnetic ring 10 on the rotating seat 11 and the driven magnetic ring 09 on the eccentric seat 53 reach the set distance, the driving magnetic ring 10 will rotate with the rotating seat 11, and the driving magnetic ring 10 will... The driven magnetic ring 09 is driven to rotate, which in turn drives the eccentric seat 53 to rotate as well. A connecting rod is connected to the eccentric part of the eccentric seat 53, and the connecting rod is connected to the push frame 08. The connecting rod and the push frame 08 form an eccentric assembly. The eccentric assembly is a commonly used structure in existing diaphragm pumps. The push frame 08 is connected to the bottom of the booster chamber 34. In this way, when the push frame 08 rotates eccentrically, it can squeeze or pull the booster, thereby realizing the process of water suction and pumping. When the first nut 32 moves up to the positioning point above the first screw 31, the positioning point is used to interrupt the continuity of the thread. Since the continuity of the thread is interrupted, the nut cannot move up any further. At this time, the first nut 32 and the first screw 31 form an integral part and rotate with the first screw 31, so that the diaphragm pump continues to work. When it is necessary to stop the operation of the upper diaphragm pump and open the lower water passage structure, the external controller sends a reverse signal to the bidirectional drive motor 30. The first screw 31 reverses, and the first nut 32 and the rotating seat 11 slowly follow the rotation under the action of inertial force, and then move downward. The distance component between the driving magnetic ring 10 and the driven magnetic ring 09 increases until it reaches the set value. At this time, the driving magnetic ring 10 can no longer drive the driven magnetic ring to rotate, the upper diaphragm pump stops working, and the water passage in the sealing component of the lower water passage structure is connected. At this time, the first nut 32 stops at the positioning point below the first screw 31 and continues to rotate with the first screw 31. In this way, through the cooperation of the first nut 32 and the first screw 31, the rotating seat 11 moves up and down a certain distance, realizing the control of the water passage of the upper diaphragm pump.

[0036] Example 3

[0037] Furthermore, the water passage structure includes a valve seat 26 and a bottom cover 21 connected to the lower end of the bidirectional drive motor 30. A water sealing assembly is located inside the valve seat 26, and the bottom cover 21 is sealed to the lower end of the valve seat 26 to form a second water inlet chamber 19. Specifically, the valve seat 26 is fixedly connected to the housing of the bidirectional drive motor 30. The second water inlet 25 and the second water outlet 16 are both located on the side wall of the valve seat 26. The bottom end of the valve seat 26 is sealed and snapped with a matching bottom cover 21. The bottom cover 21 and the lower end of the valve seat 26 form the second water inlet chamber 19. The source water enters the second water inlet chamber 19 through the second water inlet 25, and after passing through the water sealing assembly, it enters the second water outlet chamber 24. From the second water outlet chamber 24, it is transported to the second water outlet 16, and then from the second water outlet 16, it is transported to the subsequent pipeline.

[0038] Furthermore, the water-sealing assembly includes a first spring 29, a second spring 20, a cap 22, and a first control rod 18. The first control rod 18 has a water passage groove 62 on its side wall. The upper end of the first control rod 18 has a sliding body that is slidably connected to the inner cavity of the valve seat 26. The sliding body has a threaded hole in the middle. The lower output end of the bidirectional drive motor 30 is connected to a second screw 15 that matches the threaded hole. The upper half of the second screw 15 is a smooth surface 13, and the lower half is threaded. One end of the first spring 29 acts on the bidirectional drive motor 30, and the other end acts on the sliding body. One end of the second spring 20 acts on the cap 22, and the other end acts on the bottom cover 21. The bidirectional drive motor 30 rotates, causing the sliding body to move up and down, and under the combined action of the first spring 29 and the second spring 20, it forms a sealing water-sealing protrusion 23 or controls the water-sealing protrusion 23 to be open.

[0039] Furthermore, the sliding body includes a slider 28 and a control rod seat 17 connected to each other. A second nut 12 is embedded in the middle of the slider 28. A threaded hole matching the second screw 15 is provided through the middle of the second nut 12. A positioning point is provided on the thread at the lower end of the second screw 15. A lower groove 38 is provided in the middle of the control rod seat 17. A first sealing ring 27 is circumferentially fitted. A guide groove 14 is provided on the side wall of the valve seat 26. A protrusion 48 that matches the guide groove 14 is provided on the side wall of the slider 28.

[0040] The working principle in this embodiment is as follows: Figure 1As shown, for example, when the bidirectional drive motor 30 rotates forward, the upper rotary magnetic component moves, changing the volume of the pressurization chamber 34, causing the upper part to start absorbing and pumping water. At this time, the second spring 20 presses the end cap 22 upward and seals the water-sealing protrusion ring 23, thus sealing the water passage between the second water inlet chamber 19 and the second water outlet chamber 24. The upper half of the second screw 15 is a smooth surface 13, and the second nut 12 is embedded in the slider 28. The second nut 12 and the upper half of the second screw 15 are not threaded. Thus, when the output shaft at the lower end of the bidirectional drive motor 30 rotates, it will not drive the second nut 12 to rotate, and the slider 28 will not be displaced. The water passage of the entire water passage structure is sealed, and only the diaphragm pump at the top is working and pumping water.When the water passage connecting the lower water-passing structure needs to be opened, the bidirectional drive motor 30 reverses, and the second screw 15 also reverses. The lower end of the second screw 15 is threaded and adapted to the second nut 12, so that the threaded contact between the second screw 15 and the second nut 12 begins the threaded connection. The second screw 15 does not produce vertical displacement, so the second nut 12 will move downward, thereby driving the slider 28 to slide downward along the guide groove 14. The protrusion 48 prevents the slider 28 from rotating. The downward movement of the slider 28 pushes the first control rod 18 to move downward as well (the direction of the second water inlet chamber 19). At this point, under the combined action of the first spring 29 and the slider 28, the first control rod 18 overcomes the elastic force of the second spring 20 and the pressure inside the second water inlet chamber 19, pushing the end cap 22 at the sealing ring 23 downwards, thus connecting the water passage at the sealing ring 23. Water in the second water inlet chamber 19 can then enter the second water outlet chamber 24 and be discharged from the second water outlet 16. In practice, the downward movement of the slider 28 is very short, generally around 3 seconds, which is an instantaneous action. Typically, an external controller sends a reverse signal to the bidirectional drive motor 30, causing the output shaft at the lower end of the bidirectional drive motor 30 to reverse. The second nut 12 moves downwards for 3 seconds, reaching the positioning point at the lower end of the second screw 15. This positioning point is used to interrupt the continuity of the thread. Because the thread continuity is broken, the nut cannot move downwards any further. At this time, the second nut 12 and the second screw 15 form a whole and rotate together with the bidirectional drive motor 30. The water passage at the sealing ring 23 remains open. If it is necessary to seal the water passage at the sealing ring 23, the external controller only needs to first send a reset signal to stop the bidirectional drive motor 30, and then send a forward rotation signal. Then the bidirectional drive motor 30 will start rotating. When the output shaft at the lower end rotates forward, the second nut 12 will move upward along the second screw 15 for 3 seconds. The second nut 12 is located in the unthreaded area of ​​the second screw 15. Thus, the first control rod 18 and the first spring 29 are insufficient to overcome the pressure in the second spring 20 and the second water inlet chamber 19. The first control rod 18 will then move upward, and the end cap 22 will seal the water passage at the sealing convex ring 23 again. In this way, the first control rod 18 can be moved up or down by the bidirectional drive motor 30, thereby controlling the connection or sealing of the water passage at the sealing convex ring 23, so that the diaphragm pump can control the lower water passage structure.

[0041] Example 4

[0042] Furthermore, a partition plate 04 and a water pumping diaphragm 07 are pressed between the pump head body 37 and the middle plate 59. The left end of the water pumping diaphragm 07 is recessed downward to form an extension section 56 and constitute a pressurization chamber 34. The partition plate 04 is provided with an inlet hole 58 and an outlet hole 06 that are connected to the pressurization chamber 34.

[0043] Specifically, such as Figure 1As shown, a partition 04 is pressed between the pump head body 37 and the middle plate 59. A pump diaphragm 07 is circumferentially pressed between the partition 04 and the middle plate 59. The partition 04 and the inner wall of the pump head body 37 form a first water outlet chamber 03. A groove is provided on the outer wall of the partition 04, and a third sealing ring 36 is embedded in the groove. The third sealing ring 36 is used to seal the installation gap between the pump head body 37 and the partition 04. An inlet hole 58 and an outlet hole 06 are provided at the left end of the partition 04. All 6 are connected to the pressurization chamber 34. The one-way water flow structure is also installed on the partition 04, mainly including the inlet one-way diaphragm 35 and the outlet one-way diaphragm 33. The inlet one-way diaphragm 35 is fixed at the position of the inlet hole 58 on the partition 04, so that the source water can only enter the pressurization chamber 34 from the first inlet chamber 02 and cannot flow back. The outlet one-way diaphragm 33 is fixed at the position of the outlet hole 06 on the partition 04, so that the source water can only be pumped from the pressurization chamber 34 to the first outlet chamber 03 and cannot flow back.

[0044] Example 5

[0045] Furthermore, such as Figure 2 and 3 As shown, the pump head body 37 is provided with a negative pressure valve seat 39, and a valve cover 41 is provided on the top of the negative pressure valve seat 39. The negative pressure valve seat 39 is provided with a vacuum chamber 40 and a third water inlet chamber 47 connected to the first water inlet 01. The vacuum chamber 40 is connected to the first water inlet chamber 02 through the water inlet channel 49. A water sealing ring 52 and a flow control component for controlling the sealing or conduction of the water inlet at the water sealing ring 52 are formed in the water path connecting the third water inlet chamber 47 and the vacuum chamber 40. Specifically, the negative pressure valve seat 39 can be integrally formed with the pump head body 37. The valve cover 41 seals the upper end of the negative pressure valve seat 39. The source water entering from the first water inlet 01 directly enters the third water inlet chamber 47, enters the vacuum chamber 40 after passing through the flow control component, and is then sucked into the pressurization chamber 34 through the water inlet channel 49. Finally, it is pumped to the first water outlet chamber 03 and delivered to other pipelines or valves through the first water outlet 05.

[0046] Furthermore, the flow control assembly includes a second control rod 45, a third spring 42, and a sensing diaphragm 44. The sensing diaphragm 44 is sealed and fixed between the negative pressure valve seat 39 and the valve cover 41. The sensing diaphragm 44 and the valve cover 41 form an atmospheric cavity, and the valve cover 41 is provided with an atmospheric vent 43. The side wall of the second control rod 45 is provided with a flow limiting groove 50. One end of the second control rod 45 is connected to a pressure plate 51. The upper end of the pressure plate 51 is fixedly connected to the sensing diaphragm 44, and the other end is sealed with a water-sealing ring 52. One end of the third spring 42 acts on the pressure plate 51, and the other end acts on the inner wall of the negative pressure valve seat 39. Under the combined action of the air pressure in the atmospheric cavity, the pressure in the vacuum cavity 40, and the third spring 42, the second control rod 45 forms a flow control assembly that seals the water-sealing ring 52 or controls the water-sealing ring 52 to conduct.

[0047] The working principle of this embodiment is as follows: When the diaphragm pump is not working, the sum of the pressure inside the vacuum chamber 40 and the elastic force of the third spring 42 on the sensing diaphragm 44 is greater than the force exerted by the air pressure inside the atmospheric chamber on the sensing diaphragm 44. Under the combined action of the above forces, the second control rod 45 seals the water-sealing ring 52. When the diaphragm pump is working, the water or air inside the vacuum chamber 40 is sucked away, forming a certain degree of vacuum. At this time, the sum of the pressure inside the vacuum chamber 40 and the elastic force of the third spring 42 on the sensing diaphragm 44 is less than the force exerted by the air pressure inside the atmospheric chamber. The air pressure exerts a force on the sensing diaphragm 44, and the second control rod 45 moves downward under the combined action of the above forces (towards the third water inlet chamber 47). The second control rod 45 has a flow-limiting groove 50 on its side wall, meaning that the lower end of the second control rod 45 does not have a flow-limiting groove 50, but the side wall above the lower end has a flow-limiting groove 50. The part of the lower end of the second control rod 45 without the flow-limiting groove 50 moves completely downward into the third water inlet chamber 47. When it continues to move downward, the third water inlet chamber 47 is connected to the vacuum chamber 40 through the flow-limiting groove 50. When the flow-limiting groove 50 of the second control lever 45 just moves down into the third water inlet chamber 47, the flow channel connecting the third water inlet chamber 47 to the vacuum chamber 40 through the flow-limiting groove 50 is relatively small. The flow rate entering the vacuum chamber 40 is small, resulting in a smaller flow rate into the pressurized water chamber. Consequently, the flow rate pumped out by the pressurization chamber 34 is also small. If the second control lever 45 continues to move down, the distance the portion with the flow-limiting groove 50 moves into the third water inlet chamber 47 is longer. This increases the flow channel area connecting the third water inlet chamber 47 to the vacuum chamber 40, increasing the flow rate pumped out by the upper end of the diaphragm pump. Therefore, by adjusting the operating voltage (power) of the diaphragm pump, the vacuum level in the vacuum chamber 40 can be adjusted, thereby adjusting the downward movement distance of the second control lever 45 and regulating the output flow rate of the diaphragm pump. The flow control component of this embodiment is suitable for both pressurized and unpressurized water sources. When the diaphragm pump is not working, the flow control component has a water cut-off function; when the diaphragm pump is working, the output flow rate of the diaphragm pump can be adjusted by adjusting the working voltage (power) of the diaphragm pump.

[0048] Furthermore, the lower periphery of the second control rod 45 is sealed to the water inlet via a second sealing ring 46, which is located within a groove on the upper sidewall of the third water inlet chamber 47. Specifically, a groove is formed on the inner sidewall of the upper end of the third water inlet chamber, and the second sealing ring 46 is embedded within the groove. The inner side of the second sealing ring 46 seals against the lower end of the second control rod 45. The second sealing ring 46 improves the sealing performance at the water inlet, preventing water from entering the vacuum chamber 40 before the second control rod 45 slides downward.

[0049] The working principle of this invention is as follows: The first inlet 01 and the second inlet 25 are connected to the hot water and room temperature water pipes, respectively. The hot water and room temperature water are then transported to designated locations via the first outlet 05 and the second outlet 16, respectively. Initially, the upper rotating magnetic component cannot operate, and the water passage at the lower sealing component is closed. The controller sends a forward rotation signal to the bidirectional drive motor 30, causing the output shaft of the bidirectional drive motor 30 to rotate forward. The first nut 32 moves upward, and the rotating seat 11 also moves upward along with it. When the driving magnetic ring 10 on the rotating seat 11 and the driven magnetic ring 09 on the eccentric seat 53 reach a set distance, the driving magnetic ring 10 rotates together with the rotating seat 11. The driving magnetic ring 10 then drives the driven magnetic ring 09 to rotate, which in turn drives the eccentric seat 53 to rotate. The eccentric seat 53 drives the eccentric assembly to rotate eccentrically, which can squeeze or pull the pressurizing chamber, thereby pumping hot water from the first inlet 01 to the first outlet 05. The first nut 32 moves up to the first screw 31. When the upper positioning point is reached, the first nut 32 is integrated with the first screw 31 and rotates with the first screw 31, causing the diaphragm pump to work continuously. At this time, the lower second nut 12 is located in the unthreaded area of ​​the upper half of the second screw 15. The second nut 12 and the second screw 15 can only rotate relative to each other. The second nut 12 cannot move down, so the water passage at the sealing ring 23 in the water passage structure is sealed, and the lower normal warm water passage cannot be connected until the controller gives a stop command, and the motor stops running. When it is necessary to open the lower water passage structure, the external controller gives a reverse signal to the bidirectional drive motor 30, the first screw 31 reverses, and the first nut 32 and the rotating seat 11 move down under the action of inertial force. The distance component between the driving magnetic ring 10 and the driven magnetic ring 09 increases until it reaches the set value. At this time, the driving magnetic ring 10 can no longer drive the driven magnetic ring to rotate, and the upper diaphragm pump stops working. At this time, the first nut 32 stops at the positioning point below the first screw 31 and continues to rotate with the first screw 31.

[0050] When the bidirectional drive motor 30 reverses at the lower limit of the controller's command, the second screw 15 also reverses, and the threaded contact between the second screw 15 and the second nut 12 begins. Since the second screw 15 does not produce vertical displacement, the second nut 12 moves downwards, causing the slider 28 to slide downwards along the guide groove 14. The downward movement of the slider 28 pushes the first control rod 18 downwards (towards the second water inlet chamber 19). At this time, under the combined action of the first spring 29 and the slider 28, the first control rod 18 overcomes the elastic force of the second spring 20 and the pressure inside the second water inlet chamber 19, pushing the end cap 22 at the sealing ring 23 downwards, thus connecting the water passage at the sealing ring 23. Water from the second water inlet chamber 19 can then enter the second water outlet chamber 24. The water is discharged from the second outlet 16. At this time, the controller can keep the motor de-energized, so that the water passage at the sealing ring 23 is always connected. If it is necessary to seal the water passage at the sealing ring 23 again and start the diaphragm pump above, the external controller only needs to give a reset signal to make the bidirectional drive motor 30 rotate forward. Then the output shaft at the lower end of the bidirectional drive motor 30 rotates forward, and the second nut 12 will move upward along the second screw 15. The second nut 12 is just located in the unthreaded area of ​​the second screw 15. In this way, the first control rod 18 and the first spring 29 are not enough to overcome the pressure in the second spring 20 and the second water inlet chamber 19. The first control rod 18 will move upward, and the end cap 22 will seal the water passage at the sealing ring 23 again. At this time, the motor stops running. Thus, under the controller's command, the bidirectional drive motor 30 can control the rotating magnetic component and the sealing water component to alternately operate according to water usage needs, thereby enabling the diaphragm pump to control the connection or closure of two water circuits. When applied to a drinking water system, there is no need to add other pipelines and matching control valves to the drinking water system, so the entire drinking water system's pipeline will not become complicated, and the manufacturing cost will not increase accordingly.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Based on the technical essence of the present invention, any simple modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principles of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A diaphragm pump with an alternating water path structure, comprising a pump head body (37), an eccentric assembly, and a rotary magnetic assembly, wherein the pump head body (37) is provided with a booster chamber (34), a first inlet chamber (02), and a first outlet chamber (03), the first inlet chamber (02) and the first outlet chamber (03) being connected to a first inlet (01) and a first outlet (05) respectively, the booster chamber (34) being connected to the first inlet chamber (02) and the first outlet chamber (03) respectively through a unidirectional inlet and outlet water flow structure, and the rotary magnetic assembly driving the eccentric assembly to change the volume of the booster chamber (34) to draw in or pump out source water, characterized in that, It also includes a bidirectional drive motor (30) and a water passage structure. The water passage structure is provided with a second water inlet chamber (19) and a second water outlet chamber (24). The second water inlet chamber (19) and the second water outlet chamber (24) are respectively connected to the second water inlet (25) and the second water outlet (16). The water passage connecting the second water inlet chamber (19) and the second water outlet chamber (24) constitutes a water sealing ring (23) and a water sealing component that controls the sealing or conduction of the water passage at the water sealing ring (23). The two output ends of the bidirectional drive motor (30) control the alternating operation of the rotary magnetic component and the water sealing component. The water sealing assembly includes a first spring (29), a second spring (20), a head (22), and a first control rod (18). The first control rod (18) has a water passage groove (62) on its side wall. The upper end of the first control rod (18) is provided with a sliding body that is slidably connected to the inner cavity of the valve seat (26). The middle part of the sliding body is provided with a threaded hole. The lower output end of the bidirectional drive motor (30) is connected to a second screw (15) that matches the threaded hole. The upper half of the second screw (15) is a smooth surface (13), and the lower half is threaded. One end of the first spring (29) acts on the bidirectional drive motor (30), and the other end acts on the sliding body. One end of the second spring (20) acts on the head (22), and the other end acts on the bottom cover (21). The bidirectional drive motor (30) rotates and drives the sliding body to move up and down. Under the combined action of the first spring (29) and the second spring (20), it forms a sealing water sealing ring (23) or controls the water sealing ring (23) to be open.

2. A diaphragm pump with an alternating water path structure according to claim 1, wherein the rotating magnetic assembly includes a bracket (60), a driving magnetic ring (10), a driven magnetic ring (09), and a rotating shaft (55), wherein the bracket (60) is recessed downward in the middle to form a continuous primary cavity and a secondary cavity, wherein an eccentric seat (53) is provided in the primary cavity, and a bearing (57) is provided in the secondary cavity, wherein the eccentric seat (53) is connected to the rotating shaft (55), and the rotating shaft (55) is connected to the inner ring of the bearing (57), wherein the eccentric assembly is eccentrically connected to the eccentric seat (53), and the driven magnetic ring (09) is sleeved on the eccentric seat (53), and a rotating seat (11) is provided below the bracket (60), characterized in that, The drive magnetic ring (10) is sleeved on the rotating seat (11). The output end of the bidirectional drive motor (30) is connected to the first screw (31). The first screw (31) is threadedly connected to the rotating seat (11). The bidirectional drive motor (30) rotates to drive the drive magnetic ring (10) to move closer to or away from the driven magnetic ring (09) and control the driven magnetic ring (09) to rotate or stay still. The upper and lower ends of the first screw (31) are provided with positioning points.

3. A diaphragm pump with an alternating water path structure according to claim 2, characterized in that, The bracket (60) is provided with a middle plate (59) and a base (61) at its upper and lower ends respectively. The upper end of the middle plate (59) is connected to the pump head body (37), and the lower end of the base (61) is connected to the bidirectional drive motor (30). The rotating seat (11) is placed in the inner cavity of the base (61). A first nut (32) is embedded in the middle of the rotating seat (11). A threaded hole matching the first screw (31) is provided through the middle of the first nut (32).

4. A diaphragm pump with an alternating water path structure according to claim 1, characterized in that, The water passage structure includes a valve seat (26) and a bottom cover (21) connected to the lower end of the bidirectional drive motor (30). The water sealing assembly is located in the inner cavity of the valve seat (26). The bottom cover (21) is sealed to the lower end of the valve seat (26) to form a second water inlet cavity (19).

5. A diaphragm pump with an alternating water path structure according to claim 1, characterized in that, The sliding body includes a slider (28) and a control rod seat (17) connected to each other. A second nut (12) is embedded in the middle of the slider (28). A threaded hole matching the second screw (15) is provided through the middle of the second nut (12). A positioning point is provided on the thread at the lower end of the second screw (15). A lower groove (38) is provided in the middle of the control rod seat (17). A first sealing ring (27) is circumferentially fitted. A guide groove (14) is provided on the side wall of the valve seat (26). A protrusion (48) matching the guide groove (14) is provided on the side wall of the slider (28).

6. A diaphragm pump with an alternating water path structure according to claim 3, characterized in that, A partition (04) and a pumping diaphragm (07) are pressed between the pump head body (37) and the middle plate (59). The left end of the pumping diaphragm (07) is recessed downward to form an extension section (56) and constitute a pressurization chamber (34). The partition (04) is provided with an inlet hole (58) and an outlet hole (06) that are connected to the pressurization chamber (34).

7. A diaphragm pump with an alternating water path structure according to claim 1, characterized in that, The pump head body (37) is provided with a negative pressure valve seat (39), and the top of the negative pressure valve seat (39) is provided with a valve cover (41). The negative pressure valve seat (39) is provided with a vacuum chamber (40) and a third water inlet chamber (47) connected to the first water inlet (01). The vacuum chamber (40) is connected to the first water inlet chamber (02) through the water inlet channel (49). The water path connecting the third water inlet chamber (47) and the vacuum chamber (40) is provided with a water sealing ring (52) and a flow control component for controlling the sealing or conduction of the water path at the water sealing ring (52).

8. A diaphragm pump with an alternating water path structure according to claim 7, characterized in that, The flow control assembly includes a second control rod (45), a third spring (42), and a sensing diaphragm (44). The sensing diaphragm (44) is sealed and fixed between the negative pressure valve seat (39) and the valve cover (41). The sensing diaphragm (44) and the valve cover (41) form an atmospheric cavity, and the valve cover (41) is provided with an atmospheric vent (43). The side wall of the second control rod (45) is provided with a flow limiting groove (50). One end of the second control rod (45) is connected to a pressure plate (51). The upper end is fixedly connected to the sensing diaphragm (44), and the other end is sealed to the water sealing ring (52) through the lower end of the second control rod (45); one end of the third spring (42) acts on the pressure plate (51), and the other end acts on the inner wall of the negative pressure valve seat (39). The second control rod (45) forms a flow control component that seals the water sealing ring (52) or controls the water sealing ring (52) to conduct under the combined action of the air pressure in the atmospheric cavity, the pressure in the vacuum cavity (40), and the third spring (42).

9. A diaphragm pump with an alternating water path structure according to claim 8, characterized in that, The lower periphery of the second control rod (45) is sealed to the water seal port by the second sealing ring (46), and the second sealing ring (46) is set in the groove of the upper side wall of the third water inlet chamber (47).

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