CN209759134U - Pressure type switch and water purifier with same - Google Patents

Abstract

The utility model discloses a pressure switch and a water purifier with the same, which comprises a water pipe with a water flow channel inside, a micro-switch with a trigger key, a fixed seat with an opening and a movable component for opening and closing the micro-switch; the micro-gap switch sets firmly in fixing base and micro-gap switch's trigger key projection and the at least part of opening overlap, and the fixing base passes through coupling assembling and is connected with the water service pipe, and coupling assembling has a cavity, and cavity and water service pipe intercommunication are equipped with the diaphragm that pushes movable assembly to remove under the water pressure effect in the cavity, and the cavity is arranged in to movable assembly one end, and the other end supports and leans on the trigger key. This kind of pressure type switch volume is less, compact structure, and shared space is little, and the price is lower moreover, is practicing thrift space resources, can reduce the manufacturing cost of water purifier when reducing equipment process and equipment man-hour, brings better consumption experience for the customer.

Description

Pressure type switch and water purifier with same

Technical Field

The utility model relates to a pressure type switch and have water purifier of this pressure type switch.

Background

The booster pump in the existing water purifying equipment is controlled by a high-voltage switch; and the low-voltage switch in the water purification equipment controls the disconnection of the whole circuit of the system when the pressure of the water supplied by the whole system is too low or no water exists, so that the service life of the booster pump is protected, and the idling of the booster pump is prevented. Therefore, the existing water purifying equipment in the water purifying market generally utilizes the high-low pressure switch to sense the water inlet pressure of the water purifying equipment and the water pressure at the rear end of the one-way valve when the faucet is closed to control the on-off of the circuit of the whole system, but the existing high-low pressure switch has the defects of large volume, high cost, inconvenience in assembly and the like.

Disclosure of Invention

In order to solve the above technical problem, an object of the present invention is to provide a pressure switch and a water purifier having the same.

The utility model discloses a following technical scheme realizes: a pressure switch comprises a water pipe with a water flow channel inside, a micro switch with a trigger key, a fixed seat with an opening and a movable component for opening and closing the micro switch; the micro-gap switch set firmly in the fixing base just micro-gap switch's trigger key projection with the opening is at least partly overlapped, the fixing base pass through coupling assembling with the water service pipe is connected, coupling assembling has a cavity, the cavity with the water service pipe intercommunication, be equipped with in the cavity and promote under the water pressure the diaphragm that the movable assembly removed, movable assembly one end is arranged in the cavity, the other end supports and leans on the trigger key.

Preferably, the movable assembly is a guide post, and the guide post is located between the diaphragm and the trigger key.

Preferably, the movable assembly comprises a guide rod and a cross rod, one end of the guide rod is arranged in the cavity, and the other end of the guide rod is connected with the middle part of the cross rod; the first end of the cross rod is abutted against the connecting assembly, and the second end of the cross rod is connected with the fixed seat through an elastic element.

Preferably, the elastic element is screwed with the fixed seat through a spring cap.

Preferably, the membrane is a rubber sheet.

Preferably, the cavity has at least a first passage and a second passage of different diameters, the first passage being disposed adjacent to the water service pipe, the first passage having a diameter smaller than the second passage.

Preferably, the movable component is sleeved with an outer shell, and a space is formed between the inner edge of the outer shell and the outer edge of the movable component.

Preferably, the device further comprises a pressure reducing spring, wherein the pressure reducing spring is positioned in the space and sleeved on the movable assembly.

The utility model provides a water purifier, includes leading filter core, booster pump, has the RO membrane filter element group and the rearmounted filter core of water purification export and waste water export, still includes arbitrary preceding pressure type switch, pressure type switch locates leading filter core upper reaches, pressure type switch's micro-gap switch is established to normally open the circuit.

Preferably, the water purifier further comprises a second pressure switch, the microswitch of the second pressure switch is set to be a normally closed circuit, and the second pressure switch is arranged between the RO membrane filter element group and the rear filter element.

The utility model discloses a pressure type switch and have water purifier of this pressure type switch have following beneficial effect: this kind of pressure type switch volume is less, compact structure, and shared space is little, and the price is lower moreover, is practicing thrift space resources, can reduce the manufacturing cost of water purifier when reducing equipment process and equipment man-hour, brings better consumption experience for the customer.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a sectional view of a pressure type switch according to embodiment 1 of the present invention.

Fig. 2 is an exploded view of embodiment 1 of the pressure switch of the present invention.

Fig. 3 is a sectional view of embodiment 2 of the pressure switch of the present invention.

Fig. 4 is a sectional view of embodiment 3 of the pressure switch of the present invention.

Fig. 5 is an exploded view of embodiment 3 of the pressure switch of the present invention.

FIG. 6 is a flow chart of the purification process of the water purifier of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 and 2, a pressure switch includes a water pipe 1 having a water passage 11 therein, a micro switch 2 having a trigger key 21, a fixed base 3 having an opening 31, and a movable member 4 for turning on or off the micro switch 2, i.e., the movable member 4 can trigger the trigger key 21 of the micro switch 2; the microswitch 2 is fixedly arranged on the fixed seat 3, and the projection of the trigger key 21 of the microswitch 2 is at least partially overlapped with the opening 31 of the fixed seat 3, preferably, as shown in figure 1, the projection of the trigger key 21 completely falls into the opening 31, so that the movable component 4 can be more favorable for touching the trigger key 21, and the on or off of the microswitch can be accurately and sensitively controlled. This fixing base 3 is connected with this water service pipe 1 through coupling assembling 5, and this coupling assembling 5 has a cavity 51, and this cavity 51 communicates with this water service pipe 1, is equipped with the diaphragm 6 that can promote movable assembly 4 to remove under the water pressure effect in the cavity 51, and cavity 51 is placed in to the one end of this movable assembly 4, and the other end supports and leans on trigger key 21, and is known big, can directly or indirectly support and lean on between trigger key and this movable assembly. Preferably, the membrane 6 is a rubber sheet, so that the movement of the movable assembly can be pushed by the deformation displacement of the rubber sheet. Specifically, when water flows in along the water flow channel 11 of the water pipe 1, since the cavity 51 of the connecting assembly 5 is communicated with the water flow channel 11, the water further flows into the cavity 51, and the diaphragm 6 can deform or displace to some extent under the action of water pressure, so as to push the movable assembly 4 on the diaphragm 6 to move, and further act on the trigger key 21 of the microswitch 2, thereby controlling the microswitch to be in an on or off state. Optionally, as shown in fig. 2, the movable element 4 is a guide pillar, which is located between the diaphragm 6 and the trigger key 21, and the contact area with the trigger key can be increased by using the guide pillar, so that the reliability of opening or closing the trigger key can be ensured.

Preferably, referring to fig. 1, the cavity 51 of the connecting assembly 5 has at least a first passage 511 and a second passage 512 with different diameters, the first passage 511 is disposed adjacent to the water pipe 1, and the diameter of the first passage 511 is smaller than that of the second passage 512. Of course, the first or second channel may be irregular in shape, and in this case, the diameter refers to the line segment where the distance between two points where the irregular shape passes through the center point is the longest. The setting mode can delay the starting of the microswitch, and misoperation is avoided.

Example 2

Reference is made to fig. 3, which is a schematic diagram of a second embodiment of the present invention. Here, the same components as those in embodiment 1 will be described only in the points different from embodiment 1 without repeating the description. Referring to fig. 3, the movable element 4b of the pressure switch is sleeved with a housing 41b, an inner edge of the housing 41b and an outer edge of the movable element 4b form a space 42b, and the housing and the movable element may be integrally formed parts. The shell is arranged, so that the trigger key of the microswitch is limited in a certain space, and the contact between the movable assembly and the trigger key is ensured. More preferably, the pressure switch further comprises a pressure reducing spring 43b, and the pressure reducing spring 43b is disposed in the space 42b and is sleeved on the movable element 4 b. One end of the pressure reducing spring is abutted against the shell, the other end of the pressure reducing spring is abutted against the micro switch through the opening of the fixing seat, the pressure reducing spring can slow down the acting force of the movable assembly on the trigger key of the micro switch, and then the trigger key of the micro switch can be triggered only when the water pressure reaches a certain value.

Example 3

Reference is made to fig. 4 and 5, which are schematic diagrams of a third embodiment of the present invention. Here, the same components as those in embodiment 1 will be described only in the points different from embodiment 1 without repeating the description. The movable assembly 4a of the pressure switch comprises a guide rod 41a and a cross rod 42a, one end of the guide rod 41a is arranged in the cavity 51 of the connecting assembly 5, and the other end is connected with the middle part of the cross rod 42 a; the first end 42a' of the cross bar 42a abuts against the connecting assembly 5, and the second end 42a ″ is connected with the fixed seat 3 through an elastic element 7. Preferably, the first end 42a' of the cross bar includes a stopper 43a for limiting connection with the recess hole 31 of the fixing base 3, thereby fixing the first end of the cross bar at a certain position. More preferably, the second end 42a "of the cross bar comprises an extension 44a, so that the elastic element 7 is connected to the extension 44a at one end and to the holder 3 at the other end. Optionally, the elastic element 7 is screwed with the fixing base 3 through a spring cap 71. For example, the fixing seat can be screwed with the spring cap 71 through a fastening screw 8, so that the spring compression amount of the elastic element can be changed by changing the number of turns of the fastening screw screwed into the fixing seat, and different compression amounts can be adjusted to meet different water pressure requirements. The movable component of the pressure switch of the embodiment utilizes the lever principle to start the trigger key 21 of the microswitch 2, so that the reaction of the movable component 4a to the displacement or deformation of the diaphragm 6 is more sensitive, and the working reliability of the pressure switch is ensured.

The operation of the pressure switch applied to the water purifier will be described in detail.

Referring to fig. 6, the water purifier includes a pre-filter, a booster pump, a RO membrane filter group having a purified water outlet and a waste water outlet, and a post-filter, but it is also possible to provide an electromagnetic valve at the upstream of the pre-filter to control the inflow of water, or to provide a check valve at the downstream of the RO membrane filter group to prevent the reverse flow of purified water. The water purifier comprises the pressure switch described in the above embodiment, the pressure switch is arranged upstream of the pre-filter element or upstream of the electromagnetic valve, and the microswitch of the pressure switch is set as a normally open circuit. When there is water pressure in the water service pipe rivers passageway, water pressure effect is on the diaphragm, and the diaphragm produces deformation or displacement, and the diaphragm transmits water pressure to the movable assembly to promote the movable assembly upward movement, and then touch micro-gap switch's trigger key, make micro-gap switch internal circuit switch on, and then switch on the circuit of whole water purifier system, start the water purifier and carry out the operation. Compared with the conventional water purifier utilizing a low-voltage switch, the pressure type switch has the advantages of small volume, compact structure, small occupied space and low price, saves space resources, reduces the production cost of the water purifier when assembling procedures and assembling time, and brings better consumption experience for customers. More preferably, the water purifier further comprises a second pressure switch, the microswitch of the second pressure switch is set as a normally closed circuit, and the second pressure switch is arranged between the RO membrane filter element group and the rear filter element, and more preferably, between the one-way valve and the rear filter element. Because the microswitch of the second pressure switch is set as a normally closed circuit, when water pressure exists in a water flow channel of the water service pipe, the water pressure acts on the diaphragm, the diaphragm deforms or displaces, the diaphragm transmits the water pressure to the movable assembly, the movable assembly is pushed to move upwards, then the trigger key of the microswitch is triggered, the internal circuit of the microswitch is disconnected, then the circuit of the whole water purifier system is disconnected, and the water purifier stops working. Similarly, the second pressure type switch further saves space resources of the water purifier and further reduces an assembly process, man-hours, and costs of the water purifier, compared to the conventional water purifier using a high pressure switch.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (10)

1. A pressure switch is characterized by comprising a water pipe, a microswitch, a fixed seat and a movable assembly, wherein the water pipe is internally provided with a water flow channel; the micro-gap switch set firmly in the fixing base just micro-gap switch's trigger key projection with the opening is at least partly overlapped, the fixing base pass through coupling assembling with the water service pipe is connected, coupling assembling has a cavity, the cavity with the water service pipe intercommunication, be equipped with in the cavity and promote under the water pressure the diaphragm that the movable assembly removed, movable assembly one end is arranged in the cavity, the other end supports and leans on the trigger key.

2. A pressure switch as claimed in claim 1, wherein said movable member is a guide post, said guide post being located between said diaphragm and said trigger key.

3. A pressure switch as claimed in claim 1 wherein said movable member comprises a rod and a bar, one end of said rod being disposed in said cavity and the other end being connected to the middle of said bar; the first end of the cross rod is abutted against the connecting assembly, and the second end of the cross rod is connected with the fixed seat through an elastic element.

4. A pressure switch as claimed in claim 3, wherein said resilient member is threadably connected to said mounting block by a spring cap.

5. A pressure switch as claimed in claim 1, wherein the diaphragm is a rubber sheet.

6. A pressure switch as claimed in claim 1 wherein said cavity has at least first and second passages of different diameters, said first passage being disposed adjacent said water passage tube, said first passage having a diameter smaller than said second passage diameter.

7. A pressure switch as claimed in claim 1 wherein said movable member is sheathed by a housing, the inner edge of said housing and the outer edge of said movable member defining a space.

8. A pressure switch as in claim 7 further comprising a relief spring positioned within said space and disposed over said movable element.

9. A water purifier comprises a preposed filter element, a booster pump, an RO membrane filter element group with a purified water outlet and a waste water outlet, and a postposition filter element, and is characterized by also comprising a pressure switch as claimed in any one of claims 1 to 7, wherein the pressure switch is arranged at the upstream of the preposed filter element, and a microswitch of the pressure switch is set as a normally open circuit.

10. The water purifier of claim 9, further comprising a second pressure switch, wherein the micro switch of the second pressure switch is configured as a normally closed circuit, and the second pressure switch is disposed between the RO membrane filter element group and the post-filter element.