A pressure switch assembly and water pump

Abstract

The utility model discloses a pressure switch assembly and water pump, including pump head and install on the pressure switch module of pump head, the water inlet channel and the water outlet channel of intercommunication are set up in the pump head, and the water inlet end of water outlet channel is provided with the pump head water outlet valve chamber of top open, and the top of pump head water outlet valve chamber is sealed and is provided with the diaphragm that can go up and down elastic telescopic movement, the pressure switch module includes the casing and install in casing's micro -switch, swing piece and elastic part, and swing piece can go up and down swing setting in casing, and elastic part leans against setting between swing piece's top side and casing, and the bottom side of swing piece and the top side movable contact cooperation of diaphragm, and micro -switch is located swing piece one side's top, and diaphragm is used for driving swing piece and goes up and down swing, and then control micro -switch's on -off. The utility model makes diaphragm not easy to be subjected to the frequent action of water pressure slight change, prevents micro -switch and water pump frequent start -stop, and prolongs micro -switch and water pump's service life.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, specifically to a pressure switch assembly and a water pump. Background Technology

[0002] Existing water pump pressure switches, such as the one disclosed in Chinese Patent Publication No. CN209056434U, have a diaphragm that is snapped between a base and an end cap. A switch is mounted on the end cap, and a push rod on the switch abuts against the diaphragm. When the water pressure increases, and the pressure at the outlet reaches a certain level, the diaphragm is pushed upwards, which in turn pushes the push rod upwards, closing the pressure switch and shutting down the water pump. This technical solution makes the diaphragm susceptible to frequent actuation due to slight changes in water pressure, leading to frequent start-stop cycles of the pressure switch and water pump, thus affecting the lifespan of both the switch and the pump. Utility Model Content

[0003] The present invention aims to provide a pressure switch assembly to solve the aforementioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a pressure switch assembly, comprising a pump head and a pressure switch module mounted on the pump head;

[0005] The pump head is equipped with an interconnected inlet and outlet water channels. The inlet end of the outlet water channel is equipped with a pump head outlet valve chamber with an open top. The top of the pump head outlet valve chamber is sealed with a diaphragm that can move up and down elastically.

[0006] The pressure switch module includes a housing and a micro switch, a swing element, and an elastic element installed inside the housing. The swing element is oscillating up and down inside the housing. The elastic element is abutted between the top side of the swing element and the housing. The bottom side of the swing element is in movable contact with the top side of the diaphragm. The micro switch is located above one side of the swing element. The diaphragm is used to drive the swing element to swing up and down, thereby controlling the on and off of the micro switch.

[0007] Preferably, the housing includes an upper housing and a lower housing assembled vertically. A clearance hole is provided in the lower housing. The swing member includes a swing plate and a rotating shaft at one end of the swing plate. The swing member is mounted on the lower housing by swinging up and down through the rotating shaft. The swing plate extends downward to form a cylindrical part. The cylindrical part is disposed downward through the clearance hole. The bottom side of the cylindrical part is in contact with the top side of the diaphragm.

[0008] Preferably, a trigger part is provided on the top side of the swing plate near the rotating shaft, and a pressing part is provided on the bottom side of the micro switch, with the pressing part and the trigger part in vertical contact.

[0009] Preferably, the upper and lower housings are joined together to form a wiring port, a rubber wire seat is sealed and installed inside the wiring port, a wiring hole is opened inside the rubber wire seat, and a wire that is electrically connected to the micro switch is sealed and passed through the wiring hole.

[0010] Preferably, the elastic element is a spring, the cylindrical part has an upward-facing lower receiving groove, the inner top of the pump head is provided with an downward-facing upper receiving groove, and the upper and lower ends of the spring are respectively abutted in the upper receiving groove and the lower receiving groove.

[0011] Preferably, it also includes an adjusting shim and an adjusting bolt. The top of the upper housing is provided with an adjusting screw hole that communicates with the upper receiving groove. The adjusting bolt passes through the adjusting screw hole, and the adjusting shim is pressed against the upper receiving groove between the top end of the spring and the bottom end of the adjusting bolt.

[0012] Preferably, the pump head is provided with an inlet chamber and an outlet chamber that are interconnected. The inlet chamber is located outside the outlet chamber and is connected to the inlet channel. The outlet channel is connected to the outlet chamber through the pump head outlet valve chamber. A pump head outlet valve is provided between the inlet end of the pump head outlet valve chamber and the outlet end of the outlet chamber. A protective valve cover is provided on the top of the pump head outlet valve chamber. The protective valve cover is located below the diaphragm and has an outlet through hole.

[0013] Preferably, the diaphragm is circular and disc-shaped, and the top side of the protective valve cover is a circular disc surface that gradually concaves from the periphery towards the center.

[0014] Preferably, the pump head is also provided with a reflux chamber, which has an inlet hole and an outlet hole. The inlet hole of the reflux chamber is connected to the outlet hole, and the outlet hole of the reflux chamber is connected to the inlet hole.

[0015] Based on the same inventive concept, this utility model also provides a water pump, including any of the pressure switch components described above, a motor and a pump head seat. The pump head seat is installed at the output end of the motor, and the pump head is installed on the pump head seat. A swing bracket, a diaphragm, and a valve seat are sequentially installed on the pump head seat from the motor toward the pump head. The swing bracket is driven to the output end of the motor. The valve seat is provided with multiple pairs of interconnected valve seat inlet valve chambers and valve seat outlet valve chambers. A valve seat inlet valve is provided at the valve seat inlet valve chamber, and a valve seat outlet valve is provided at the valve seat outlet valve chamber.

[0016] This utility model has the following beneficial effects:

[0017] The diaphragm of this invention uses an independent elastic element located outside the micro switch to elastically abut against the swinging element, and indirectly controls the on / off state of the micro switch through the lever principle of the swinging element. This makes the diaphragm less susceptible to frequent operation due to slight changes in water pressure, thereby preventing frequent start-stop of the micro switch and water pump and extending the service life of the micro switch and water pump. Attached Figure Description

[0018] Figure 1 This is a perspective view of Embodiment 1 of this utility model.

[0019] Figure 2 This is a top-side view of Embodiment 1 of this utility model.

[0020] Figure 3 This is an exploded view of Embodiment 1 of this utility model.

[0021] Figure 4 This is an exploded view of the pressure switch module of Embodiment 1 of this utility model.

[0022] Figure 5 This is a top view of Embodiment 1 of this utility model.

[0023] Figure 6 yes Figure 5 Sectional view at point AA.

[0024] Figure 7 This is a top-side view of the pump head of Embodiment 1 of this utility model.

[0025] Figure 8 This is an exploded view of the valve seat of Embodiment 1 of this utility model.

[0026] Figure 9 This is an exploded view of some components of Embodiment 1 of this utility model.

[0027] Figure 10 This is a schematic diagram of the internal structure of the pump head in Embodiment 1 of this utility model.

[0028] Figure 11 This is a half-sectional view of the pump head of Embodiment 1 of this utility model.

[0029] Figure 12 This is a schematic diagram of the appearance of the pressure switch module of Embodiment 1 of this utility model.

[0030] Figure 13 This is a schematic diagram of the structure of the swing component in Embodiment 1 of this utility model.

[0031] Figure 14 This is an exploded view of Embodiment 2 of this utility model.

[0032] Attached diagram labels: 1 Pump head, 2 Inlet channel, 3 Outlet channel, 4 Pump head outlet valve chamber, 5 Diaphragm, 6 Upper housing, 61 Upper receiving groove, 7 Lower housing, 71 Clearance hole, 8 Micro switch, 81 Pressing part, 9 Oscillating component, 91 Oscillating plate, 92 Rotating shaft, 93 Cylindrical part, 94 Trigger part, 95 Lower receiving groove, 10 Elastic component, 11 Wiring port, 12 Rubber wire holder, 13 Wiring hole, 14 Adjusting shim, 15 Adjusting bolt. 16 Adjusting screw hole, 17 Inlet chamber, 18 Outlet chamber, 19 Pump head outlet valve, 20 Protective valve cover, 21 Outlet through hole, 22 Return chamber, 23 Inlet hole, 24 Outlet hole, 25 Motor, 26 Pump head seat, 27 Swing bracket, 28 Diaphragm, 29 Valve seat, 30 Valve seat inlet valve chamber, 31 Valve seat outlet valve chamber, 32 Valve seat inlet valve, 33 Valve seat outlet valve, 34 Iron mounting bracket, 35 Eccentric wheel, 36 Bearing. Detailed Implementation

[0033] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0034] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Example 1.

[0037] See Figure 1-13As shown, as an embodiment of the present invention, a pressure switch assembly is provided for installation on a water pump, including a pump head 1 and a pressure switch module installed on the pump head 1;

[0038] The pump head 1 is provided with an inlet channel 2 and an outlet channel 3 that are interconnected. The inlet channel 2 and the outlet channel 3 are respectively used to connect to the inlet pipe and the outlet pipe. The inlet end of the outlet channel 3 is provided with a pump head outlet valve chamber 4 with an open top. The top of the pump head outlet valve chamber 4 is sealed with a diaphragm 5 that can move up and down elastically.

[0039] The pressure switch module includes a housing and a micro switch 8, a swing member 9, and an elastic member 10 installed inside the housing. The swing member 9 is oscillating up and down inside the housing. The elastic member 10 is abutted between the top side of the swing member 9 and the housing. The bottom side of the swing member 9 is in contact with the top side of the diaphragm 5. The micro switch 8 is located above one side of the swing member 9. The micro switch 8 is electrically connected to the motor 25 inside the water pump via a wire. The diaphragm 5 is used to drive the swing member 9 to swing up and down, thereby controlling the on / off state of the micro switch 8, and thus controlling the start and stop of the motor.

[0040] When the valve of the external outlet pipe connected to the outlet channel 3 is closed, the pump motor 25 continues to operate, causing the water pressure in the outlet channel 3 and the pump head outlet valve chamber 4 to gradually increase. Once the water pressure reaches a certain level, it will push the diaphragm 5 upward, driving the swinging member 9 to swing upward, which in turn triggers the micro switch 8 to disconnect, thus shutting off the motor 25 and reducing the load and wear on the pump, saving energy. When the valve of the external outlet pipe connected to the outlet channel 3 is opened, the water pressure in the outlet channel 3 and the pump head outlet valve chamber 4 will gradually decrease. When the water pressure decreases to less than the elastic force of the elastic member 10, the swinging member 9 swings downward under the elastic force of the elastic member 10, and the diaphragm 5 elastically resets downward. At this time, the micro switch 8 is triggered to open, thus restarting the motor 25. Because the diaphragm 5 in this technical solution is elastically abutted against the swinging element 9 by an independent elastic element 10 located outside the micro switch 8, and the on / off state of the micro switch 8 is indirectly controlled by the lever principle of the swinging element 9, the diaphragm 5 is not easily affected by slight changes in water pressure and will not frequently move, thereby preventing the micro switch 8 and the water pump from frequently starting and stopping, and extending the service life of the micro switch 8 and the water pump.

[0041] In this embodiment, the housing includes an upper housing 6 and a lower housing 7 assembled vertically. A clearance hole 71 is provided in the lower housing 7. The swing member 9 includes a swing plate 91 and a rotating shaft 92 at one end of the swing plate 91. The swing member 9 is oscillating up and down on the lower housing 7 via the rotating shaft 92. The swing plate 91 extends downward to form a cylindrical part 93. The cylindrical part 93 is disposed downward through the clearance hole 71. The bottom side of the cylindrical part 93 is in movable contact with the top side of the diaphragm 5. This arrangement can improve the reliability of the contact between the swing member 9 and the diaphragm 5.

[0042] In this embodiment, a trigger part 94 is provided on the top side of the swing plate 91 near the rotating shaft 92. The trigger part 94 is specifically a protrusion. A pressing part 81 is provided on the bottom side of the micro switch 8. The pressing part 81 and the trigger part 94 make contact and cooperate with each other. This arrangement can improve the accuracy and reliability of the swing plate 91 in controlling the on and off of the micro switch 8.

[0043] In this embodiment, the upper housing 6 and the lower housing 7 are joined together to form a wiring port 11. A rubber wire seat 12 is sealed and installed inside the wiring port 11. A wiring hole 13 is opened inside the rubber wire seat 12. A wire that is electrically connected to the micro switch 8 is sealed and passed through the wiring hole 13, thereby achieving a good waterproof effect for the wire.

[0044] In this embodiment, the elastic element 10 is a spring, the cylindrical part 93 has an upward-facing lower receiving groove 95, and the inner top of the pump head 1 is provided with an downward-facing upper receiving groove 61. The upper and lower ends of the spring are respectively abutted in the upper receiving groove 61 and the lower receiving groove 95. This arrangement can improve the assembly stability of the spring and the stability of the extension and retraction action, prevent tilting and displacement, and thus ensure the reliability of the downward swinging and resetting of the swinging element 9.

[0045] In this embodiment, an adjusting shim 14 and an adjusting bolt 15 are also included. The top of the upper housing 6 is provided with an adjusting screw hole 16 that communicates with the upper receiving groove 61. The adjusting bolt 15 passes through the adjusting screw hole 16. The adjusting shim 14 is pressed against the upper receiving groove 61 between the top end of the spring and the bottom end of the adjusting bolt 15. By adjusting the installation depth of the adjusting bolt 15 in the adjusting screw hole 16, the tension of the spring is adjusted, thereby adjusting the critical value of the water pressure in the pump head outlet valve chamber 4 used to drive the diaphragm 5 and the swing member 9 to move.

[0046] In this embodiment, the pump head 1 is provided with an inlet chamber 17 and an outlet chamber 18 that are interconnected. The inlet chamber 17 is located on the periphery of the outlet chamber 18, and the inlet channel 2 is connected to the inlet chamber 17. The outlet channel 3 is connected to the outlet chamber 18 through the pump head outlet valve chamber 4. A pump head outlet valve 19 is provided between the inlet end of the pump head outlet valve chamber 4 and the outlet end of the outlet chamber 18. The pump head outlet valve 19 is a one-way outlet valve. A protective valve cover 20 is provided on the top of the pump head outlet valve chamber 4. The protective valve cover 20 is located below the diaphragm 5. A water outlet hole 21 is provided on the protective valve cover 20. The water in the pump head outlet valve chamber 4 is sprayed upward through the water outlet hole 21, thereby pushing the diaphragm 5 upward. This setting can increase the water pressure and ensure that the diaphragm 5 can be pushed upward smoothly.

[0047] In this embodiment, the diaphragm 5 is a circular disc, and the top side of the protective valve cover 20 is a circular disc surface that gradually concaves from the periphery to the center, so that the top side of the protective valve cover 20 corresponds and matches the bottom side of the diaphragm 5, thereby effectively preventing the diaphragm 5 from moving excessively downward under the elastic action of the elastic member 10 and causing deformation.

[0048] In this embodiment, the pump head 1 is also provided with a return chamber 22. The return chamber 22 has an inlet hole 23 and an outlet hole 24. The inlet hole 23 of the return chamber 22 is connected to the outlet chamber 18, and the outlet hole 24 of the return chamber 22 is connected to the inlet chamber 17. This allows the water in the outlet chamber 18 to flow back to the inlet chamber 17 through the return chamber 22 when the valve of the outlet pipe connected to the outlet channel 3 is closed. This serves as a pressure reduction and buffer, preventing the pump head 1 or the outlet pipe from bursting.

[0049] This utility model also provides a water pump, which includes the pressure switch assembly, motor 25, and pump head seat 26 described above. The pump head seat 26 is installed at the output end of the motor 25, and the pump head 1 is installed on the pump head seat 26. An eccentric wheel 35, a bearing 36, a swing bracket 27, a diaphragm 28, and a valve seat 29 are sequentially installed on the pump head seat 26 from the motor 25 toward the pump head 1. The swing bracket 27 is driven and connected to the output end of the motor 25 through the eccentric wheel 35 and the bearing 36. The valve seat 29 is provided with multiple pairs of interconnected valve seat inlet valve chambers 30 and valve seat outlet valve chambers 31. A valve seat inlet valve 32 is provided at the valve seat inlet valve chamber 30, and a valve seat outlet valve 33 is provided at the valve seat outlet valve chamber 31. That is, when the valve of the external outlet pipe connected to the outlet channel 3 is closed, due to… The pump motor 25 continues to operate, causing the water pressure in the outlet channel 3 and the pump head outlet valve chamber 4 to gradually increase. Once the water pressure reaches a certain level, it pushes the diaphragm 5 upwards, driving the oscillating element 9 to swing upwards. This triggers the microswitch 8 to open, shutting off the motor 25 and reducing the pump's load and wear, thus saving energy. When the valve on the external outlet pipe connected to the outlet channel 3 opens, the water pressure in the outlet channel 3 and the pump head outlet valve chamber 4 gradually decreases. When the water pressure drops below the elastic force of the elastic element 10, the oscillating element 9 swings downwards under the elastic force of the elastic element 10, and the diaphragm 5 elastically resets downwards. This triggers the microswitch 8 to open, restarting the motor 25. Furthermore, the pump's diaphragm 5 is less susceptible to frequent actuation due to slight changes in water pressure, preventing frequent start-stop cycles of the microswitch 8 and the pump, thus extending their service life.

[0050] Specifically, the water pump is a five-chamber water pump, corresponding to five pairs of valve seat inlet valve chambers 30 and valve seat outlet valve chambers 31. Of course, in other cases, the water pump can also be a multi-chamber water pump with other numbers of chambers, such as a four-chamber water pump. An iron mounting bracket is fixedly installed on the outside of the motor 25, thereby quickly dissipating the heat of the motor 25 to the iron mounting bracket. The aluminum pump head seat 26 is an aluminum pump head seat 26, and the swing bracket 27 is an aluminum swing bracket, thereby improving the heat dissipation efficiency of the water pump.

[0051] Example 2: For the sake of brevity, this example mainly describes the differences from Example 1.

[0052] See Figure 14 As shown, this utility model also provides a water pump, which is a three-chamber water pump, with three pairs of valve seat inlet valve chamber 30 and valve seat outlet valve chamber 31.

[0053] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A pressure switch assembly, characterized by: Includes the pump head and the pressure switch module mounted on the pump head; The pump head is equipped with an interconnected inlet and outlet water channels. The inlet end of the outlet water channel is equipped with a pump head outlet valve chamber with an open top. The top of the pump head outlet valve chamber is sealed with a diaphragm that can move up and down elastically. The pressure switch module includes a housing and a micro switch, a swing element, and an elastic element installed inside the housing. The swing element is oscillating up and down inside the housing. The elastic element is abutted between the top side of the swing element and the housing. The bottom side of the swing element is in movable contact with the top side of the diaphragm. The micro switch is located above one side of the swing element. The diaphragm is used to drive the swing element to swing up and down, thereby controlling the on and off of the micro switch.

2. The pressure switch assembly of claim 1, wherein: The housing includes an upper housing and a lower housing that are assembled vertically. A clearance hole is provided in the lower housing. The swinging component includes a swing plate and a rotating shaft at one end of the swing plate. The swinging component is mounted on the lower housing by swinging up and down through the rotating shaft. The swing plate extends downward to form a cylindrical part. The cylindrical part is disposed downward through the clearance hole. The bottom side of the cylindrical part is in contact with the top side of the diaphragm.

3. The pressure switch assembly of claim 2, wherein: A trigger part is provided on the top side of the swing plate near the rotating shaft, and a pressing part is provided on the bottom side of the micro switch. The pressing part and the trigger part are in contact and cooperate with each other.

4. The pressure switch assembly of claim 2, wherein: The upper and lower housings are joined together to form a wiring port. A rubber wire holder is sealed inside the wiring port. A wiring hole is opened inside the rubber wire holder, and a wire that is electrically connected to the micro switch is sealed through the wiring hole.

5. The pressure switch assembly of claim 2, wherein: The elastic element is a spring, the cylindrical part has an upward-facing lower receiving groove, and the inner top of the pump head is provided with an downward-facing upper receiving groove. The upper and lower ends of the spring are respectively abutted in the upper receiving groove and the lower receiving groove.

6. The pressure switch assembly of claim 5, wherein: It also includes an adjusting shim and an adjusting bolt. The top of the upper housing is provided with an adjusting screw hole that communicates with the upper receiving groove. The adjusting bolt passes through the adjusting screw hole, and the adjusting shim is pressed against the upper receiving groove between the top end of the spring and the bottom end of the adjusting bolt.

7. The pressure switch assembly of claim 1, wherein: The pump head has an interconnected inlet chamber and an outlet chamber. The inlet chamber is located outside the outlet chamber and is connected to the inlet channel. The outlet channel is connected to the outlet chamber through the pump head outlet valve chamber. A pump head outlet valve is provided between the inlet end of the pump head outlet valve chamber and the outlet end of the outlet chamber. A protective valve cover is provided on the top of the pump head outlet valve chamber. The protective valve cover is located below the diaphragm and has an outlet through hole.

8. The pressure switch assembly of claim 7, wherein: The diaphragm is circular and disc-shaped, and the top side of the protective valve cover is a circular disc surface that gradually concaves from the periphery towards the center.

9. The pressure switch assembly of claim 7, wherein: The pump head is also equipped with a reflux chamber, which has an inlet and an outlet. The inlet and outlet of the reflux chamber are connected, and the outlet of the reflux chamber is connected to the inlet.

10. A water pump characterized by: The device includes the pressure switch assembly, motor, and pump head seat as described in any one of claims 1-9. The pump head seat is installed at the output end of the motor, and the pump head is installed on the pump head seat. A swing bracket, a diaphragm, and a valve seat are sequentially installed on the pump head seat from the motor toward the pump head. The swing bracket is driven to the output end of the motor. The valve seat is provided with multiple pairs of interconnected valve seat inlet valve chambers and valve seat outlet valve chambers. A valve seat inlet valve is provided at the valve seat inlet valve chamber, and a valve seat outlet valve is provided at the valve seat outlet valve chamber.

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