CN219529900U - Difficult negative pressure control valve who blocks up - Google Patents

Abstract

The utility model discloses a negative pressure control valve which is not easy to block, comprising an air cylinder and a valve body which are respectively arranged at two sides of a fixed plate, wherein a cavity is arranged in the valve body, and the air cylinder is in transmission connection with a guide rod and can drive the air cylinder to axially move in the cavity; an air inlet is arranged on one side wall of the valve body, an air outlet is arranged on the opposite side wall of the valve body, and the air inlet and the air outlet are both communicated with the cavity. The valve body has no electromagnetic structure, the air inlet on the valve body can be opened larger, the air hole is not easy to be blocked by scraps and sundries, and the maintenance period can be prolonged; the cylinder is adopted to drive the guide rod, so that the automatic control of the opening and closing of a plurality of air outlet holes on the valve body can be realized, the opening size of the air outlet holes can be controlled by controlling the movement of the guide rod, the negative pressure size in the valve body can be regulated, and the purposes of changing the air pressure difference between the inside and the outside of the valve body and regulating the adsorption force of the air inlet can be further realized; the control valve does not need to be manually opened and closed during the work, so that the defects caused by human errors are avoided, and the production efficiency can be improved.

Description

Difficult negative pressure control valve who blocks up

Technical Field

The utility model relates to the technical field of automatic material suction, in particular to a negative pressure control valve which is not easy to block.

Background

The use of air pressure difference (negative pressure) to suck materials is one of the automatic feeding modes commonly used in the current production, and is particularly suitable for the material taking and discharging operation of various precise light and thin or small-size products.

In the production at present, the negative pressure control valve has two forms of automatic and manual control, the automatic control valve realizes the opening and closing of different air passages by controlling the movement of a piston rod through electromagnetic, and controls the negative pressure output, and the negative pressure control valve has the advantages of small volume, convenient application, and capability of automatically operating when a machine starts to operate through program setting control, but the air inflow and air holes of the control valve are generally smaller, so that the adsorption force is insufficient, the product is easy to fall off, and meanwhile, the smaller air holes are easily blocked by the product or waste, and the suction nozzle or the air holes must be cleaned regularly, so that the production efficiency is influenced; in contrast, the manual control valve can make the gas pocket slightly bigger, and the air input is sufficient, and adsorption affinity is also stronger, but all need the manual operation at every turn, pause, transfer machine and shut down the time, increased operating personnel's work load, if forget the switch control valve, probably can cause product loss or production unusual.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides the negative pressure control valve which is not easy to block, has no electromagnetic structure in the valve body, has larger air inlet holes and is not easy to block by scraps and sundries, can prolong the maintenance period, needs to manually switch the control valve in the working process, avoids the defects caused by human errors, and can improve the production efficiency.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the negative pressure control valve not easy to block comprises an air cylinder and a valve body which are respectively arranged at two sides of a fixed plate, wherein a cavity is arranged in the valve body, a guide rod is arranged in the cavity, and the guide rod is in transmission connection with the air cylinder and can axially move under the driving of the guide rod; an air inlet is arranged on one side wall of the valve body, more than two air outlets are arranged on the opposite side wall of the valve body, a plurality of air outlets can be blocked or released when the guide rod moves, and the air inlet and each air outlet are communicated with the cavity.

As a further explanation of the above technical solution:

in the technical scheme, a plurality of annular protrusions integrally formed with the guide rod are axially arranged on the guide rod, a sealing ring is embedded in each annular protrusion, and the maximum axial thickness of each annular protrusion is larger than the maximum diameter of each air outlet.

In the above technical scheme, each annular bulge middle part all be equipped with the draw-in groove of sealing washer adaptation, every annular bulge's up and down terminal surface is the inclined plane of outside slope.

In the above technical solution, the cavity is adapted to the guide rod and the plurality of annular protrusions.

In the above technical scheme, an air inlet valve is arranged in the air inlet, an air outlet valve is arranged in each air outlet, and the air inlet valve and each air outlet valve extend to the outer side of the valve body.

In the above technical scheme, two sides of the air inlet on the valve body are respectively provided with a silencing hole, a silencer is arranged in each silencing hole, and each silencer extends to the outer side of the valve body.

Compared with the prior art, the utility model has the beneficial effects that: the valve body has no electromagnetic structure, the air inlet on the valve body can be opened larger, the air hole is not easy to be blocked by scraps and sundries, and the maintenance period can be prolonged; the cylinder is adopted to drive the guide rod, so that the automatic control of the opening and closing of a plurality of air outlet holes on the valve body can be realized, the opening size of the air outlet holes can be controlled by controlling the movement of the guide rod, the negative pressure size in the valve body can be regulated, and the purposes of changing the air pressure difference between the inside and the outside of the valve body and regulating the adsorption force of the air inlet can be further realized; the control valve does not need to be manually opened and closed during the work, so that the defects caused by human errors are avoided, and the production efficiency can be improved.

Drawings

Fig. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic diagram of the structure of the present embodiment in front elevation sectional view;

fig. 3 is an exploded view of the present embodiment;

FIG. 4 is an enlarged schematic view of the portion A in FIG. 3;

fig. 5 is a schematic sectional view of the valve body in this embodiment.

In the figure: 10. a fixing plate; 20. a cylinder; 30. a valve body; 31. an air inlet; 32. an air outlet; 33. a cavity; 34. a sound deadening hole; 40. a guide rod; 41. an annular protrusion; 50. a seal ring; 1. a clamping groove; 2. an inclined plane; 3. an intake valve; 4. an air outlet valve; 5. a muffler; 6. and a connecting rod.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a number", "a plurality" or "a plurality" is two or more, unless specifically defined otherwise. In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

As shown in fig. 1-5, a negative pressure control valve which is not easy to be blocked comprises an air cylinder 20 and a valve body 30 which are respectively arranged at two sides of a fixed plate 10, wherein a cavity 33 is arranged in the valve body 30, a guide rod 40 is arranged in the cavity 33, and the guide rod 40 is in transmission connection with the air cylinder 20 and can axially move under the driving of the guide rod 40; one side wall of the valve body 33 is provided with an air inlet 31, the opposite side wall of the valve body is provided with more than two air outlets 32, the guide rod 40 can block or release a plurality of air outlets 32 when moving, and the air inlet 31 and each air outlet 32 are communicated with the cavity 33.

The valve body has no electromagnetic structure, the air hole on the valve body 30 can be opened relatively large, the air inlet hole 31 is not easy to be blocked by scraps and sundries, and the maintenance period can be prolonged; the guide rod 40 is driven by the air cylinder 20, so that the automatic control of opening and closing of the air outlet hole 32 on the valve body 30 can be realized, the opening size of the air outlet hole 32 can be controlled by controlling the movement of the guide rod 40, the negative pressure size in the valve body 30 can be regulated, and the purposes of changing the air pressure difference between the inside and outside of the valve body 30 and regulating the adsorption force of the air inlet 31 can be further achieved; the control valve does not need to be manually opened and closed during the work, so that the defects caused by human errors are avoided, and the production efficiency can be improved.

In this embodiment, the shape, structure and size of the fixing plate 10 can be adjusted according to the structure of the CNC machine, so as to meet the requirement of the installation positions of the cylinder 20 and the valve body 30, and the flexibility is strong.

Further, as shown in fig. 3, a plurality of annular protrusions 41 integrally formed with the guide rod 40 are axially arranged on the guide rod 40, and a sealing ring 50 is embedded in each annular protrusion 41, and the maximum axial thickness of each annular protrusion 41 is larger than the maximum diameter of each air outlet 32.

Further, as shown in fig. 4, a clamping groove 1 adapted to the sealing ring is provided in the middle of each annular protrusion 41, and the upper and lower end surfaces of each annular protrusion 41 are inclined surfaces 2 inclined outwards.

In this embodiment, the side wall of the larger annular protrusion 41 is an isosceles trapezoid structure placed vertically, and the upper and lower side walls thereof cooperate with the seal ring 50 to ensure the tightness of the valve body 30.

Further, as shown in fig. 5, the cavity 33 is adapted to the guide bar 40 and the plurality of annular protrusions 41.

Further, as shown in fig. 2, an air inlet valve 3 is installed in the air inlet 31, an air outlet valve 4 is installed in each air outlet 32, and the air inlet valve 3 and each air outlet valve 4 extend to the outer side of the valve body 30.

In this embodiment, as shown in fig. 3 and 5, the guide rod 40 is in driving connection with the cylinder 20 through a connecting rod 6.

Further, as shown in fig. 1 and 5, a silencing hole 34 is further formed on each side of the air inlet 31 on the valve body 30, and a silencer 5 is installed in each silencing hole 34, and each silencer 5 extends to the outer side of the valve body 30.

It will be appreciated that the muffler 5 can reduce the differential pressure of the air within the valve body 30

When the vacuum suction device works, all the air inlet valves 3 and the air outlet valves 4 are electrically controlled to be opened, the vacuum sounder is connected with the air outlet 32, the suction nozzle is connected with the air inlet 31 through a pipeline, the air cylinder 20 drives the connecting rod 6 to drive the guide rod 40 to axially move in the cavity 33, and the annular protrusions 41 are synchronously driven to move so as to partially or completely discharge the air channel 32, so that the negative pressure in the valve body 30 is regulated and controlled, and the purpose of regulating the suction force of the suction nozzle connected with the air inlet 31 is achieved.

The above description should not be taken as limiting the scope of the utility model, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.

Claims (6)

1. The negative pressure control valve is characterized by comprising an air cylinder and a valve body which are respectively arranged at two sides of a fixed plate, wherein a cavity is arranged in the valve body, a guide rod is arranged in the cavity, and the guide rod is in transmission connection with the air cylinder and can axially move under the driving of the guide rod; an air inlet is arranged on one side wall of the valve body, more than two air outlets are arranged on the opposite side wall of the valve body, a plurality of air outlets can be blocked or released when the guide rod moves, and the air inlet and each air outlet are communicated with the cavity.

2. The negative pressure control valve of claim 1, wherein the guide rod is axially provided with a plurality of annular protrusions integrally formed therewith, each annular protrusion is embedded with a sealing ring, and the maximum axial thickness of each annular protrusion is larger than the maximum diameter of each air outlet.

3. The negative pressure control valve which is not easy to block according to claim 2, wherein the middle part of each annular bulge is provided with a clamping groove matched with the sealing ring, and the upper end face and the lower end face of each annular bulge are inclined planes inclined outwards.

4. A non-blocking negative pressure control valve according to claim 2, wherein the cavity is adapted to the guide rod and the plurality of annular projections.

5. A non-blocking negative pressure control valve according to any one of claims 1-4, wherein an inlet valve is provided in the inlet port, an outlet valve is provided in each outlet port, and the inlet valve and each outlet valve extend to the outside of the valve body.

6. The non-plugging negative pressure control valve according to claim 5, wherein each of the valve bodies is further provided with a silencing hole on both sides of the air inlet, each silencing hole is internally provided with a silencer, and each silencer extends to the outer side of the valve body.