CN214945440U

CN214945440U - Hydraulic flow measurement switch based on cartridge valve type structure

Info

Publication number: CN214945440U
Application number: CN202120781497.0U
Authority: CN
Inventors: 刘友良
Original assignee: Wuxi Gemini Fluid Power Technology Co ltd
Current assignee: Wuxi Gemini Fluid Power Technology Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-11-30
Anticipated expiration: 2031-04-16

Abstract

A hydraulic flow measuring switch based on a cartridge valve type structure comprises a shell and a measuring device, wherein the measuring device is fixedly installed inside the shell; the measuring device comprises a flow detecting device and a magnetic induction device, the flow detecting device is fixedly installed at the bottom end of the inside of the shell, an anti-blocking device is arranged inside the flow detecting device, and the magnetic induction device is fixedly installed at the top end of the inside of the shell. The utility model aims at providing a hydraulic pressure flow measurement switch based on cartridge valve formula structure has the advantage of being convenient for integrate, detect the precision height and the range of application is wide.

Description

Hydraulic flow measurement switch based on cartridge valve type structure

Technical Field

The utility model relates to a flow detection field, in particular to hydraulic pressure flow measurement switch based on cartridge valve formula structure.

Background

The application of current hydraulic equipment is very extensive to along with the improvement of industrial automation degree, also be particularly important to hydraulic system's upgrading, all kinds of industrial automation sensor products are used for hydraulic system function promotion gradually, solve the measurement and the control of pressure, flow, temperature among the hydraulic system, are hydraulic system automatic control very important link. The hydraulic flow switch is designed, and a reliable flow monitoring signal can be given mainly aiming at small flow detection of a small flow hydraulic actuator mechanism and a hydraulic terminal actuator of a distributed hydraulic piping system or tiny leakage flow of the hydraulic actuator mechanism, so that the hydraulic flow switch has great significance for monitoring a small flow hydraulic system, detecting leakage of the hydraulic system and the like.

At present, chinese patent with grant publication number CN211234584U discloses a plunger matching parts skirt flow detection device, be equipped with the cylinder, a support, the cylinder is installed in the support top, the support lower part is equipped with the base, the fixed dabber that is equipped with on the base, the dabber outside is equipped with the copper sheathing on the base, be equipped with the spring between copper sheathing and the base, the base upper surface is equipped with the base sealing washer, evenly be equipped with the locating pin on the base, the dabber upper end is equipped with the silica gel pad, cylinder lower extreme fixed connection end cover, end cover lower extreme fixed connection gland, be equipped with the gland sealing washer between end cover and the gland, still be equipped with bush and polyurethane pad on the end cover, the bush is located polyurethane pad top, polyurethane pad is established between end cover and gland, the gland side is equipped with the connecting plate, be equipped with the guide rail between connecting plate and the support. The plunger matching part skirt flow detection device solves the problem that the detection data of a product is inaccurate due to the fact that a rubber cushion is easy to age and lose elasticity in an existing plunger matching part skirt flow detection device. The utility model discloses but wide application is in cover type part flow detection.

The above prior art has the following problems: inconvenient system integration, low detection precision and single application.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hydraulic pressure flow measurement switch based on cartridge valve formula structure has the advantage of being convenient for integrate, detect the precision height and the range of application is wide.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a hydraulic flow measuring switch based on a cartridge valve type structure comprises a shell and a measuring device, wherein the measuring device is fixedly installed inside the shell; the measuring device comprises a flow detecting device and a magnetic induction device, the flow detecting device is fixedly installed at the bottom end of the inside of the shell, an anti-blocking device is arranged inside the flow detecting device, and the magnetic induction device is fixedly installed at the top end of the inside of the shell.

Further, the flow detection device comprises a plunger, a permanent magnet and a spring; the plunger is movably mounted at the bottom end of the interior of the shell, the permanent magnet is fixedly mounted at the top of the plunger, and the spring is fixedly mounted at the top of the permanent magnet.

Further, the anti-seize device comprises a support rod fixedly mounted on the top of the inside of the spring, and the support rod is used for limiting the deformation amount of the spring.

Furthermore, the cylindrical surface of the plunger is provided with an annular oil groove, the annular oil groove is used for avoiding the occurrence of the blocking condition of the plunger, the top of the plunger is provided with a plurality of micropores, and the micropores are used for guiding oil into the annular oil groove through pressure difference, further lubricating the plunger and avoiding the blocking.

Further, an oil outlet is formed in the bottom end of the shell, and an oil inlet is formed in the bottom of the shell.

To sum up, the utility model discloses following beneficial effect has:

1. the shell and the detection device are arranged based on a plug-in valve type structure, so that the effect of convenient integration can be achieved;

2. the arrangement of the precision grinding plunger, the micropore and the annular oil groove can play a role in lubricating and detecting high precision;

3. through the setting of flow detection device and magnetic induction device, can play the monitoring flow, also can be used for hydraulic system leakage monitoring's effect simultaneously.

Drawings

FIG. 1 is a schematic diagram of a hydraulic flow measurement switch based on a cartridge valve type structure in this embodiment, which is used to show the connection relationship among a housing, an oil inlet, an oil outlet, a flow detection device and a magnetic induction device;

FIG. 2 is a schematic structural diagram for showing the connection relationship among the plunger, the permanent magnet and the spring in the present embodiment;

fig. 3 is a schematic structural diagram for showing the connection relationship among the plunger, the micro-hole and the annular oil groove in the present embodiment.

In the figure, 1, a housing; 11. an oil outlet; 12. an oil inlet; 2. a measuring device; 21. a flow detection device; 211. a plunger; 2111. an annular oil groove; 2112. micropores; 212. a permanent magnet; 213. a spring; 22. a magnetic induction device; 3. an anti-seize device; 31. a support rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, the terms "bottom" and "top", "inner" and "outer" refer to directions toward and away from a particular component geometry, respectively, and the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless the direction of the center is specifically defined otherwise.

Example (b): a hydraulic flow measuring switch based on a cartridge valve type structure comprises a shell 1 and a measuring device 2, wherein the measuring device 2 is fixedly arranged in the shell 1; an oil outlet 11 is formed in the bottom end of the shell 1, an oil inlet 12 is formed in the bottom of the shell 1, the measuring device 2 comprises a flow detecting device 21 and a magnetic induction device 22, the flow detecting device 21 is fixedly installed at the bottom end of the interior of the shell 1, and the flow detecting device 21 comprises a plunger 211, a permanent magnet 212 and a spring 213; plunger 211 movable mounting be in the bottom of the inside of casing 1, permanent magnet 212 fixed mounting be in the top of plunger 211, spring 213 fixed mounting be in the top of permanent magnet 212, the inside of flow detection device 21 is provided with anti-sticking device 3, magnetism induction system 22 fixed mounting be in the top of the inside of casing 1.

As a technical optimization scheme of the utility model, anti-sticking device 3 includes fixed mounting and is in the bracing piece 31 at the top of the inside of spring 213, bracing piece 31 is used for injecing the deformation volume of spring 213 can avoid causing the dead phenomenon of spring 213 card to produce after long-term the use because the deformation volume of spring 213 is too big through setting up of bracing piece 31.

As a technical optimization scheme of the utility model, the face of cylinder of plunger 211 is provided with annular oil groove 2111, annular oil groove 2111 is used for avoiding the dead situation of plunger 211 card produces, a plurality of micropores 2112 have been seted up at the top of plunger 211, micropore 2112 is used for leading into oil through the pressure difference annular oil groove 2111, further lubrication plunger 211 avoids the card to die.

The specific implementation process comprises the following steps: the flow measurement switch adopts the plug valve type plunger cavity shell 1, the switch is connected in series in a hydraulic oil path, hydraulic oil flows from an oil inlet 12 to an oil outlet 11, the hydraulic oil flows into the annular oil groove 2111 through the micropores 2112 to lubricate the plunger 211, the permanent magnet 212 is close to the magnetic induction device 22 under the pushing of the plunger 211 to enable the switch to give a contact on-off signal, when no oil passes through, the spring 213 resets and resets the plunger 211, and the plug valve type structure is adopted, so that the switch can be very conveniently integrated and assembled on a hydraulic pilot or various hydraulic terminal actuating mechanism cylinder bodies during application.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A hydraulic flow measurement switch based on a cartridge valve type structure comprises a shell (1) and a measurement device (2), and is characterized in that: the measuring device (2) is fixedly arranged in the shell (1); survey device (2) including flow detection device (21) and magnetic induction device (22), flow detection device (21) fixed mounting be in the bottom of the inside of casing (1), the inside of flow detection device (21) is provided with anti-sticking device (3), magnetic induction device (22) fixed mounting be in the top of the inside of casing (1).

2. The hydraulic flow rate measuring switch according to claim 1, wherein: the flow detection device (21) comprises a plunger (211), a permanent magnet (212) and a spring (213); plunger (211) movable mounting be in the bottom of the inside of casing (1), permanent magnet (212) fixed mounting be in the top of plunger (211), spring (213) fixed mounting be in the top of permanent magnet (212).

3. A hydraulic flow rate measuring switch based on a cartridge valve type structure according to claim 2, wherein: the anti-blocking device (3) comprises a support rod (31) fixedly mounted on the top of the interior of the spring (213), the support rod (31) being used for limiting the deformation amount of the spring (213).

4. A hydraulic flow rate measuring switch based on a cartridge valve type structure according to claim 2, wherein: the plunger piston structure is characterized in that an annular oil groove (2111) is formed in the cylindrical surface of the plunger piston (211), the annular oil groove (2111) is used for avoiding the situation that the plunger piston (211) is blocked, a plurality of micropores (2112) are formed in the top of the plunger piston (211), the micropores (2112) are used for guiding oil into the annular oil groove (2111) through pressure difference, the plunger piston (211) is further lubricated, and blocking is avoided.

5. The hydraulic flow rate measuring switch according to claim 1, wherein: an oil outlet (11) is formed in the bottom end of the shell (1), and an oil inlet (12) is formed in the bottom of the shell (1).