CN210984606U

CN210984606U - Liquid flow switch

Info

Publication number: CN210984606U
Application number: CN201922148307.7U
Authority: CN
Inventors: 袁峰; 杨静; 诸葛任敏; 陆飞; 张英
Original assignee: Nantong Simples Instrument Co ltd
Current assignee: Nantong Simples Instrument Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-07-10
Anticipated expiration: 2029-12-04

Abstract

The utility model discloses a liquid flow switch, which comprises a shell, wherein the middle part of the upper surface of the shell is provided with an upper shell, the inner upper surface of the shell is hinged with a driving plate through a hinged seat, one side of the driving plate is provided with a lower curved bar near the lower position, and an elastic upper curved bar is arranged above one side of the driving plate near the lower curved bar, the position in the upper shell corresponding to the elastic upper curved bar is provided with a lowest flow contact, and the position in the upper shell corresponding to the lower curved bar is provided with a highest flow contact, the elastic upper curved bar of the driving plate of the utility model jacks up a contact bar below the lowest flow contact, the upper end of the contact bar opens the lowest flow contact, and after the lowest flow contact is opened, the controllable water flow is increased, the utility model is provided with a V-shaped elastic piece, the elastic upper curved bar can compress the V-shaped elastic piece until the lower curved bar reaches the lower end of the contact, this avoids the contact pin below the lowest flow contact from over-compressing the contact.

Description

Liquid flow switch

Technical Field

The utility model relates to a flow switch technical field specifically is a liquid flow switch.

Background

The flow switch is mainly installed in the medium pipelines of water, gas, oil and the like in an on-line or plug-in mode to monitor the water flow in the water system. When the water flow is higher or lower than a certain set point, an alarm signal is triggered and output and transmitted to the unit, and the system can make corresponding indication action after acquiring the signal. Avoid or reduce the host computer "dry combustion method;

patent No. 201621217274.7 proposes a liquid flow switch that presses a piston upward by water pressure until the piston reaches an electromagnetic switch, at which point an alarm is given and the water flow is controlled to decrease;

however, such a flow switch has the disadvantage that when the water flow is too small, the water flow cannot be controlled to increase.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a liquid flow switch to when discharge is too little among the solution prior art, the problem of the increase of uncontrollable water flow.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a liquid flow switch, includes the shell, the upper surface mid-mounting of shell has the epitheca, the inside upper surface of shell articulates through articulated seat has the drive plate, the position that one side of drive plate is close to the downside installs down the knee-lever, and the drive plate is close to one side top of lower knee-lever and installs flexible last knee-lever, the position that the inside of epitheca and elasticity go up the knee-lever and correspond is provided with minimum flow contact, and the position that the inside of epitheca and lower knee-lever correspond is provided with maximum flow contact.

Preferably, feeler levers are arranged below the lowest flow contact and the highest flow contact, and the lower ends of the feeler levers penetrate through the upper surface of the shell.

Preferably, the upper half part of feeler lever is overlapped and is equipped with the spring, and the upper end and the feeler lever of spring are fixed mutually, and the lower extreme of spring is fixed mutually with the upper surface of shell.

Preferably, the elastic upper curved bar is installed on the hinge seat through a reset hinge.

Preferably, a V-shaped elastic sheet is arranged between the elastic upper bent rod and the hinge seat.

Preferably, one end of the shell, which is close to the drive plate, is provided with a water inlet, and one end of the shell, which is far away from the drive plate, is provided with a water outlet.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the elastic upper curved rod of the driving plate of the utility model jacks up the feeler lever below the lowest flow contact, the feeler lever stretches the spring, the lowest flow contact is opened at the upper end of the feeler lever, and the controllable water flow is increased after the lowest flow contact is opened;

2. the utility model discloses set up V-arrangement shell fragment, the drive plate continues to rotate, and the feeler lever of minimum flow contact below pushes down the flexible curved bar that goes up, and curved bar compression V-arrangement shell fragment in the elasticity reaches the lower extreme of the feeler lever of maximum flow contact below until lower curved bar, can avoid the excessive extrusion contact of feeler lever of face minimum flow contact below like this.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of area A of FIG. 1;

FIG. 3 is a schematic view of the contact rod contacting the lowest flow contact of the present invention;

FIG. 4 is an enlarged view of area B of FIG. 3;

FIG. 5 is a schematic diagram of the contact rod of the present invention contacting the highest flow contact;

fig. 6 is an enlarged view of region C of fig. 5.

In the figure: 1. a housing; 2. a drive plate; 3. a hinged seat; 4. an upper shell; 5. a lowest flow contact; 6. a highest flow contact; 7. a feeler lever; 71. a spring; 8. a lower curved bar; 9. an elastic upper curved bar; 10. a reset hinge; 11. v-shaped elastic sheet.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, 3 and 5, in an embodiment of the present invention, a liquid flow switch includes a housing 1, an upper housing 4 is installed in the middle of an upper surface of the housing 1, a driving plate 2 is hinged to the upper surface of the interior of the housing 1 through a hinge seat 3, a water inlet is disposed at one end of the housing 1 close to the driving plate 2, a water outlet is disposed at one end of the housing 1 far from the driving plate 2, water flows into the housing 1 from the water inlet, the driving plate 2 is pressed by water due to a hydraulic pressure, and the water flows through the housing 1;

referring to fig. 1, a lower curved bar 8 is installed at a position close to the lower side of one side of the driving plate 2, and the lower curved bar 8 is used for contacting the highest flow contact 6;

as shown in fig. 2, 4 and 6, an elastic upper curved bar 9 is installed above one side of the drive plate 2 close to the lower curved bar 8, the elastic upper curved bar 9 is installed on the hinge base 3 through a reset hinge 10, and a V-shaped elastic sheet 11 is arranged between the elastic upper curved bar 9 and the hinge base 3, when the drive plate 2 rotates, the elastic upper curved bar 9 firstly pushes the contact bar 7 upwards, then the contact bar 7 can contact the lowest flow contact 5, the lowest flow contact 5 can control the water flow to increase, and when the elastic upper curved bar 9 continues to rotate, the included angle of the V-shaped elastic sheet 11 which is compressed is reduced until the lower curved bar 8 reaches the lower end of the contact bar 7 corresponding to the highest flow contact 6;

as shown in fig. 1, a lowest flow contact 5 is arranged at a position corresponding to an elastic upper curved rod 9 in the upper shell 4, a highest flow contact 6 is arranged at a position corresponding to a lower curved rod 8 in the upper shell 4, when the lowest flow contact 5 is opened, the control water flow is increased, and when the highest flow contact 6 is opened, the control water flow is decreased, and an alarm is given;

as shown in fig. 1, a feeler lever 7 is arranged below the lowest flow contact 5 and the highest flow contact 6, the lower end of the feeler lever 7 passes through the upper surface of the housing 1, a spring 71 is sleeved on the upper half part of the feeler lever 7, the upper end of the spring 71 is fixed with the feeler lever 7, the lower end of the spring 71 is fixed with the upper surface of the housing 1, when the feeler lever 7 is pushed upwards, the spring 71 is stretched, when the feeler lever 7 loses thrust, the spring 71 returns to a natural state, so that the feeler lever 7 moves downwards to return to a home position, and at the moment, the contacts are closed; when the device is used, water flow enters from the water inlet, the drive plate 2 is pressed to rotate by water pressure, the state shown in fig. 3 and 4 is reached, the elastic upper curved rod 9 jacks up the contact rod 7 below the lowest flow contact 5 at the moment, the contact rod 7 stretches the spring 71, the upper end of the contact rod 7 opens the lowest flow contact 5, after the lowest flow contact 5 is opened, the control water flow is increased, the water flow continues to be increased, the drive plate 2 continues to rotate, the contact rod 7 below the lowest flow contact 5 presses the elastic upper curved rod 9 downwards, the elastic upper curved rod 9 compresses the V-shaped elastic sheet 11 until the lower curved rod 8 reaches the lower end of the contact rod 7 below the highest flow contact 6, the contact rod 7 opens the highest flow contact 6, then the control water flow is reduced, and an alarm is given.

The utility model discloses a theory of operation and use flow: when the device is used, water flow enters from the water inlet, the drive plate 2 is pressed to rotate by water pressure, the state shown in fig. 3 and 4 is reached, the elastic upper curved rod 9 jacks up the contact rod 7 below the lowest flow contact 5 at the moment, the contact rod 7 stretches the spring 71, the upper end of the contact rod 7 opens the lowest flow contact 5, after the lowest flow contact 5 is opened, the control water flow is increased, the water flow continues to be increased, the drive plate 2 continues to rotate, the contact rod 7 below the lowest flow contact 5 presses the elastic upper curved rod 9 downwards, the elastic upper curved rod 9 compresses the V-shaped elastic sheet 11 until the lower curved rod 8 reaches the lower end of the contact rod 7 below the highest flow contact 6, the contact rod 7 opens the highest flow contact 6, then the control water flow is reduced, and an alarm is given.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid flow switch comprising a housing (1), characterized in that: the utility model discloses a motor drive device, including shell (1), upper surface mid-mounting of shell (1) has epitheca (4), the inside upper surface of shell (1) articulates through articulated seat (3) has drive plate (2), bent lever (8) down are installed to one side of drive plate (2) position near the downside, and drive plate (2) are close to one side top of bent lever (8) down and are installed bent lever (9) in the elasticity, the position that bent lever (9) correspond is provided with minimum flow contact (5) in the inside of epitheca (4) and elasticity, and the position that the inside of epitheca (4) and lower bent lever (8) correspond is provided with maximum flow contact (6).

2. A liquid flow switch as defined in claim 1, wherein: contact rods (7) are arranged below the lowest flow contact (5) and the highest flow contact (6), and the lower ends of the contact rods (7) penetrate through the upper surface of the shell (1).

3. A liquid flow switch according to claim 2, wherein: the upper half part of feeler lever (7) is overlapped and is equipped with spring (71), and the upper end and feeler lever (7) of spring (71) are fixed mutually, and the lower extreme of spring (71) is fixed mutually with the upper surface of shell (1).

4. A liquid flow switch as defined in claim 1, wherein: the elastic upper bent rod (9) is arranged on the hinge seat (3) through a reset hinge (10).

5. A liquid flow switch according to claim 4, wherein: and a V-shaped elastic sheet (11) is arranged between the elastic upper bent rod (9) and the hinge seat (3).

6. A liquid flow switch as defined in claim 1, wherein: one end of the shell (1) close to the drive plate (2) is provided with a water inlet, and one end of the shell (1) far away from the drive plate (2) is provided with a water outlet.