CN207229827U

CN207229827U - Feed bin top switching valve

Info

Publication number: CN207229827U
Application number: CN201721155493.1U
Authority: CN
Inventors: 宋睿丰; 张新军; 李春雨; 李华兰
Original assignee: Beijing Betterclyde Engineering Technology Co Ltd
Current assignee: Beijing Betterclyde Engineering Technology Co Ltd
Priority date: 2017-09-11
Filing date: 2017-09-11
Publication date: 2018-04-13
Anticipated expiration: 2027-09-11

Abstract

The utility model discloses a plant feed bin top switching valve, including the valve housing at the top of feed bin, valve housing both sides are respectively equipped with input pipe, efferent duct, installation pneumatic actuator at the top of valve housing, the piston rod of pneumatic actuator stretches into valve housing and with being mutually fixedly connected at the top of the spool of the circular tube structure in valve housing, spool bottom is fixedly connected with arc baffle plate, and spool and baffle plate move up and down in the case where the piston rod of pneumatic actuator stretches drive in valve housing together, wherein：When spool drops to lower limit, the two-port of spool is opposite with input pipe, efferent duct respectively so that material via input pipe, spool, efferent duct and be sent to next feed bin；When spool rises to upper limit, baffle plate is opposite with input pipe, so that material after input pipe, baffle plate via dropping.The utility model can ensure the operation steady in a long-term of material switching conveying between different feed bins, simple and practical, occupy little space, service life length.

Description

Feed bin top switching valve

Technical field

A plant feed bin top switching valve is the utility model is related to, espespecially one kind is installed at the top of feed bin (material storehouse), for switching To the pneumatic switching valve of the materials such as different feed bin conveying solid substance powder, molecule.

Background technology

In small-sized material conveying industries, generally use gas piping reversal valve adds the form of channel bend to realize that gas is defeated The blanking between system end two or more feed bin (material storehouse) is sent to switch.But it can be found that above-mentioned way is deposited from actual implementation In following deficiency：The space directly installed additional outside gas piping shared by the way of channel bend is larger, and it is difficult to be arranged in feed bin Spend it is larger, and material by gas delivery system end when speed, the abrasion to gas piping reversal valve is very big, So as to cause the service life of gas piping reversal valve shorter, it is necessary to constantly replace, this feed hopper actual operation brings very big Trouble.

Utility model content

The purpose of this utility model is to provide a plant feed bin top switching valve, it can ensure thing between different feed bins (material storehouse) The operation steady in a long-term of material switching conveying, it is simple and practical, occupy little space, service life length.

To achieve these goals, the utility model employs following technical scheme：

One plant feed bin top switching valve, it is characterised in that：It includes being installed on the valve housing at the top of feed bin, valve housing both sides point Not She You input pipe, efferent duct, installation pneumatic actuator at the top of valve housing, the piston rod of pneumatic actuator stretch into valve housing and with Mutually it is fixedly connected at the top of the spool of circular tube structure in valve housing, spool bottom is fixedly connected with arc baffle plate, spool and folding Flowing plate moves up and down in the case where the piston rod of pneumatic actuator stretches drive in valve housing together, wherein：When spool declines During to lower limit, the two-port of spool is opposite with input pipe, efferent duct respectively, so that material is via input pipe, spool, efferent duct And it is sent to next feed bin；When spool rises to upper limit, baffle plate is opposite with input pipe, so that material is via input Drop after pipe, baffle plate.

The utility model has the advantages that：

The utility model changes the switching theory in existing feed bin (material storehouse), and switching valve is directly pacified in the form of body structure It is simple and practical loaded on feed bin top, occupy little space, there is no the perishable device that abrasion is quickly transmitted by material, service life It is long, steady in a long-term operation of the effective guarantee to the conveying of the materials such as solid powder, molecule.

Brief description of the drawings

Fig. 1 is the structure diagram (stent is not shown) of the utility model.

Fig. 2 is the left view schematic diagram of Fig. 1 (the utility model is in lower limit state).

Fig. 3 is the schematic diagram that the utility model is in upper limit state.

Embodiment

As shown in Figure 1 to Figure 3, the utility model feed bin top switching valve includes being installed on the valve housing at the top of feed bin (material storehouse) 10,10 both sides of valve housing are respectively equipped with input pipe 11, efferent duct 12, and the top of valve housing 10 installation pneumatic actuator 60, pneumatically holds The piston rod 61 of row device 60 stretches into valve housing 10 and is mutually fixedly connected with the top of spool 20 of the circular tube structure in valve housing 10, valve 20 bottom of core is fixedly connected with arc baffle plate 80, and spool 20 and baffle plate 80 are stretched in the piston rod 61 of pneumatic actuator 60 together Contracting moves up and down under driving in valve housing 10, wherein：When spool 20 drops to lower limit, the two-port point of spool 20 It is not opposite with input pipe 11, efferent duct 12 so that material via input pipe 11, spool 20, efferent duct 12 and be sent to next Feed bin；When spool 20 rises to upper limit, baffle plate 80 is opposite with input pipe 11, so that material is via input pipe 11, baffling Plate is after 80s to be fallen in the feed bin of the utility model feed bin top switching valve place, i.e., is hindered into the material of input pipe 11 by baffle plate 80 Keep off and drain and drop down onto below the switching valve of the utility model feed bin top in feed bin.

Such as Fig. 2, in actual design, pneumatic actuator 60 is connected with Pneumatic controlled box 40, and Pneumatic controlled box 40 controls pneumatic actuator The stretching motion of 60 piston rod 61.Further, as Fig. 2, Pneumatic controlled box 40 are fixed on the top of valve housing 10 by stent 70 Side.

Such as Fig. 2 and Fig. 3, flange 21 is installed in the two-port of spool 20, flange 21 is towards the side of 10 inner wall of valve housing Equipped with groove, gas-flow closure circle 30 is housed in groove.

It is preferred that when spool 20 drops to lower limit, gas-flow closure circle 30 is such as tight by the control pressurising of Pneumatic controlled box 40 Be pressed on 10 inner wall of valve housing realize sealing, with ensure material into next feed bin course of conveying not with the utility model feed bin String storehouse phenomenon occurs for feed bin where pushing up switching valve.

When spool 20 is in upper limit and during up and down motion, 30 not pressurising of gas-flow closure circle, so that spool 20 The gap of about 2mm is kept between 10 inner wall of valve housing to ensure that it is smooth that spool 20 moves up and down.

Such as Fig. 1, being provided with the lateral wall of valve housing 10 ensures that spool 20 accurately rises to the upper limit of upper limit and approaches Switch 51 and ensure that spool 20 accurately drops to the lower limit of lower limit close to switch 52, i.e., upper and lower limit is close switchs 51,52 Ensure that spool 20 it is accurate in place.In addition, whether upper and lower limit may further be used to feedback feed bin in receipts close to switch 51,52 Material state.

The course of work of the utility model is：

Pneumatic controlled box 40 receives feeding instruction, and control pneumatic actuator 60 acts：

When feed bin where needing material being delivered to the utility model feed bin top switching valve, 60 controlled band of pneumatic actuator Movable valve plug 20 moves up to upper limit, and then baffle plate 80 rises to 11 position of input pipe, opposite with input pipe 11, so that thing Expect under the airflow function that gas delivery system provides, fall to the utility model feed bin top from input pipe 11, baffle plate 80 and cut Change in the feed bin below valve.

When needing material being delivered to next feed bin outside feed bin where the switching valve of the utility model feed bin top, gas Dynamic 60 controlled band movable valve plug 20 of actuator moves downwardly to lower limit, then 20 two-port of spool respectively with input pipe 11, output Pipe 12 is opposite, so that material is under the airflow function that gas delivery system provides, from input pipe 11, spool 20,12 quilt of efferent duct Send to next feed bin.

The utility model has the advantages that：

The above is the utility model preferred embodiment and its technical principle used, for those skilled in the art It is any based on technical solutions of the utility model basis in the case of the spirit and scope without departing substantially from the utility model for member On equivalent transformation, simple replacement etc. is obvious changes, belong within scope of protection of the utility model.

Claims

A 1. plant feed bin top switching valve, it is characterised in that：It includes being installed on the valve housing at the top of feed bin, valve housing both sides difference Equipped with input pipe, efferent duct, pneumatic actuator is installed at the top of valve housing, the piston rod of pneumatic actuator stretches into valve housing and and valve Mutually it is fixedly connected at the top of the spool of circular tube structure in babinet, spool bottom is fixedly connected with arc baffle plate, spool and baffling Plate moves up and down in the case where the piston rod of pneumatic actuator stretches drive in valve housing together, wherein：When spool drops to During lower limit, the two-port of spool is opposite with input pipe, efferent duct respectively so that material via input pipe, spool, efferent duct and It is sent to next feed bin；When spool rises to upper limit, baffle plate is opposite with input pipe so that material via input pipe, Drop after baffle plate.
2. feed bin top as claimed in claim 1 switching valve, it is characterised in that：

The pneumatic actuator is connected with Pneumatic controlled box, and Pneumatic controlled box controls the stretching motion of the pneumatic actuator piston rod.
3. feed bin top as claimed in claim 2 switching valve, it is characterised in that：

The Pneumatic controlled box is fixed by the bracket in the top-side of the valve housing.
4. feed bin top as claimed in claim 1 switching valve, it is characterised in that：

Flange is installed, flange is equipped with groove towards the side of the valve housing inner wall, in groove in the two-port of the spool Equipped with gas-flow closure circle.
5. feed bin top as claimed in claim 4 switching valve, it is characterised in that：

When the spool drops to lower limit, the gas-flow closure circle pressurising and press close in being realized on the valve housing inner wall Envelope, string storehouse phenomenon does not occur to ensure material into next feed bin course of conveying.
6. feed bin top as claimed in claim 1 switching valve, it is characterised in that：

Be provided with the lateral wall of the valve housing ensure the spool accurately rise to the upper limit of upper limit close to switch and Ensure that the spool accurately drops to the close switch of lower limit of lower limit.