CN213839606U

CN213839606U - Grain conveying valve

Info

Publication number: CN213839606U
Application number: CN202022972005.4U
Authority: CN
Inventors: 韩建平; 梁彦龙; 李晓云
Original assignee: Shanxi Fengyide Food Processing Co ltd
Current assignee: Shanxi Fengyide Food Processing Co ltd
Priority date: 2020-12-13
Filing date: 2020-12-13
Publication date: 2021-07-30
Anticipated expiration: 2030-12-13

Abstract

The utility model relates to a valve for grain conveying. The utility model discloses a cylinder that sets up intercommunication input port and delivery outlet holds the chamber, the cylinder holds the awl case that sets up pneumatic cylinder drive displacement in the chamber, the case sets the elastic expansion sliding sleeve, the cylinder holds the chamber coaxial and sets up transition ring platform with the delivery outlet, the accurate regulation control of throughflow can be realized to the mode that pneumatic cylinder servo drive toper case closed, adopt awl valve line sealing mode can guarantee zero leakage of material, the transition ring platform that the setting has slope shape can be solved and remain grain and store up the problem, the case sets the elastic expansion sliding sleeve and can realize blocking in advance of no broken pressure situation, thereby realize that the main valve core reliably closes, the valve has the reliable operation advantage, the switching process opens red grain granule and does not receive the extrusion destruction.

Description

Grain conveying valve

Technical Field

The utility model belongs to the technical field of grain is carried, specifically a grain delivery valve.

Background

In the process of conveying or processing and circulating granular grains, a valve needs to be arranged for opening and closing, in order to meet the processing technological process and match the grain processing speed, the grain is required to be accurately adjusted in the flow rate, when the flow rate of the granular grains is adjusted and opened and closed by the existing valve, the condition that the flow rate is not accurate enough exists, for example, the minimum flow rate cannot be adjusted basically, the situation that a valve core is blocked by grain particles in the opening and closing process of the valve is caused, the opening and closing action of the valve is abnormal easily, the grain particles are opened, closed, crushed and crushed by the metal part of the valve, and the adverse effect is generated on the subsequent proportioning, processing and other high-quality production of the grain.

Disclosure of Invention

The utility model discloses a solve the problem that grain granule and the accurate regulation of flow were pressed to the valve in the grain transportation process, invent a grain conveying valve.

The utility model adopts the following technical proposal:

the utility model provides a grain delivery flap, set up the valve pocket in the valve body, the valve pocket communicates input port and delivery outlet respectively, set up the case in the valve pocket, the valve pocket specifically is the cylinder and holds the chamber, the delivery outlet is the regular round hole, the delivery outlet holds the vertical coaxial in chamber with the cylinder, the case is the cylinder, the cylinder middle section sets up the annular, case one end sets up the conical head coaxial with the cylinder, cylinder holds the chamber aperture and is greater than the delivery outlet aperture, the cylinder holds the chamber and sets up transition ring platform with the delivery outlet connector, the sliding sleeve is established to the annular endotheca of case, the sliding sleeve is provided with the flange of joint to the annular endocyclic, the sliding sleeve body extends to conical head end direction, sliding sleeve external diameter holds chamber internal diameter adaptation with the cylinder, the fixed pneumatic cylinder that sets up of valve body, the piston rod of pneumatic cylinder is connected the case and is driven its axial displacement.

The transition ring platform is an upper ring platform and a lower ring platform which are in two-stage transition, the upper ring platform and the lower ring platform are respectively in a slope shape, and the cylindrical cavity is transited to an output port sequentially through the upper ring platform and the lower ring platform.

The annular groove of the valve core is internally sleeved with a spring, and the spring elastically compresses the sliding sleeve to keep towards the lower part of the conical head end.

The extending end of the sliding sleeve body is vulcanized with a rubber edge, and the rubber edge of the extending end of the sliding sleeve body abuts against the slope-shaped annular table of the upper annular table.

The hydraulic cylinder is a servo hydraulic cylinder.

Compared with the prior art, the utility model discloses can obtain following technological effect: the mode that hydraulic pressure servo drive toper case closed can realize the accurate regulation control of through-flow, adopts the taper valve line sealing mode can guarantee that the material is zero to leak, sets up the transition ring platform of slope shape and can solve remaining grain and store up the problem, and the case sets up the flexible sliding sleeve and can realize blocking in advance of the condition of no crushing pressure to realize that main valve core reliably closes.

The utility model discloses a zero leakage of valve is closed and flow accurate control adjusts, valve reliable operation, and grain granule does not receive the extrusion to destroy.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic view of the valve closed state of the present invention;

FIG. 3 is a schematic view of the valve core of the present invention;

fig. 4 is a schematic view of the sliding sleeve of the present invention.

The valve comprises a valve body 1, a valve body 2, an output port 2, an input port 3, a cylindrical cavity 4, a valve core 5, a spring 6, a sliding sleeve 7, a hydraulic cylinder 8, an upper annular table 9, a lower annular table 10, a cylinder 501, an annular groove 502, a conical head 503, an inner annular flange 701 and a rubber edge 702.

Detailed Description

Referring to fig. 1-4, a grain delivery valve comprises a valve body 1 provided with an input port 3 and an output port 2, the output port 2 is vertically arranged, a cylindrical cavity 4 communicating the input port 3 and the output port 2 is arranged in the valve body 1, the output port 2 is a regular round hole, the cylindrical cavity 4 is vertically coaxial with the output port 2, a sliding valve core 5 is arranged in the cylindrical cavity 4, the valve body 1 is fixedly provided with a hydraulic cylinder 8, a piston rod of the hydraulic cylinder 8 is connected with the valve core 5 and drives the valve core 5 to axially move, the valve core 5 is a cylinder 501, a ring groove 502 is arranged in the middle section of the cylinder 501, a conical head 503 coaxial with the cylinder 501 is arranged at one end of the valve core 5, a connecting port between the cylindrical cavity 4 and the output port 2 is provided with a transition ring platform which is an upper ring platform 9 and a lower ring platform 10 in two-stage transition, the upper ring platform 9 and the lower ring platform 10 are respectively slope-shaped ring platforms, and the aperture of the cylindrical cavity 4 is larger than the aperture of the output port 2, the cylindrical cavity 4 is transited to the output port 2 through the upper annular table 9 and the lower annular table 10 in sequence, the hydraulic cylinder 8 pushes and pulls the valve core 5 to axially move along the cylindrical cavity 4, so that the conical head 503 end of the valve core 5 extends into the output port 2 hole, the output port 2 and the lower annular table 10 are intersected to form a circular line, the conical body at the conical head 503 end is contacted with the circular line to realize the sealing of the output port 2, the spring 6 and the sliding sleeve 7 are sleeved in the circular groove 502 of the valve core 5, the sliding sleeve 7 is provided with an inner annular flange 701 clamped and connected to the circular groove 502, the sliding sleeve body extends towards the conical head 503 end, the extending end of the sliding sleeve body is vulcanized with a rubber edge 702, the spring 6 elastically compresses the sliding sleeve 7 to keep towards the lower part of the conical head 503 end, and the outer diameter of the sliding sleeve 7 is matched with the inner diameter of the cylindrical cavity 4.

The working mode is as follows:

as shown in fig. 1 and 3, grain particles enter the cylindrical cavity 4 from the input port 3 and are output from the output port 2, the valve plug 5 is driven by the hydraulic cylinder 8 to move axially up and down, the annular through-flow area formed by the conical head 503 and the inner hole of the output port 2 changes, the grain through-flow rate is accurately regulated, and the hydraulic cylinder 8 is preferably a servo-controlled servo hydraulic cylinder.

As shown in fig. 2-4, when the valve is closed, the hydraulic cylinder 8 drives the valve core 5 to move axially downward, before the annular flow passage cavity formed by the conical head 503 and the inner hole of the output port 2 is not completely closed, the rubber edge 702 at the extending end of the sliding sleeve 7 abuts against the slope-shaped annular table of the upper annular table 9, and at the same time, the sliding sleeve 7 retreats in the opposite direction along with the downward compression spring 6 of the valve core 5, the sliding sleeve 7 isolates the input port 3, and blocks the grain particles at the input port 3 from flowing to the cavity of the lower annular table 10, and some grain particles may be acted by the pressure of the rubber edge 702 of the sliding sleeve 7, but the sliding sleeve 7 has a retreating function, and the rubber edge 702 has a non-rigid contact, so as to ensure that the shape of the pressed grain particles is complete and not broken, because the upper annular table 9 and the lower annular table 10 are provided with slope-shaped annular tables rather than plane annular tables, the grain particles entering the cavities of the upper annular table 9 and the lower annular table 10 cannot be accumulated, after the residual grain particles after the sliding sleeve 7 is closed fall into the output port 2 from the upper ring platform 9 and the lower ring platform 10, the hydraulic cylinder 8 drives the valve element 5 to continue to move axially downwards, the annular through-flow cavity formed by the conical head 503 and the inner hole of the output port 2 is completely closed, and the conical head 503 and the inner hole of the output port 2 form linear sealing in a state of no grain particle extrusion, so that the communication between the input port 3 and the output port 2 is completely blocked, and zero leakage of the particles is realized.

Claims

1. The utility model provides a grain delivery valve, sets up the valve pocket in valve body (1), and the valve pocket communicates input port (3) and delivery outlet (2) respectively, sets up case (5), its characterized in that in the valve pocket: the valve cavity is a cylindrical cavity (4), the output port (2) is a regular round hole, the output port (2) and the cylindrical cavity (4) are vertical and coaxial, the valve core (5) is a cylinder (501), an annular groove (502) is formed in the middle section of the cylinder (501), a conical head (503) coaxial with the cylinder (501) is arranged at one end of the valve core (5), the aperture of the cylindrical cavity (4) is larger than that of the output port (2), a connecting port of the cylindrical cavity (4) and the output port (2) is provided with a transition annular table, a sliding sleeve (7) is sleeved in the annular groove (502) of the valve core (5), the sliding sleeve (7) is provided with a flange (701) clamped to the inner ring of the annular groove (502), the sliding sleeve body extends towards the end direction of the conical head (503), the outer diameter of the sliding sleeve (7) is matched with the inner diameter of the cylindrical cavity (4), and the valve body (1) is fixedly provided with a hydraulic cylinder (8), and a piston rod of the hydraulic cylinder (8) is connected with the valve core (5) and drives the valve core to move axially.

2. The grain delivery valve of claim 1, wherein: the transition ring platform is an upper ring platform (9) and a lower ring platform (10) which are in two-stage transition, the upper ring platform (9) and the lower ring platform (10) are respectively in a slope shape, and the cylindrical cavity (4) is transited to the output port (2) through the upper ring platform (9) and the lower ring platform (10) in sequence.

3. The grain delivery valve of claim 1, wherein: the valve core (5) is characterized in that a spring (6) is sleeved in a ring groove (502), and the spring (6) elastically compresses a sliding sleeve (7) to be kept towards the lower part of the end of the conical head (503).

4. The grain delivery valve of claim 2, wherein: the extending end of the sliding sleeve body is vulcanized with a rubber edge (702), and the rubber edge (702) of the extending end of the sliding sleeve (7) is abutted against the slope-shaped annular table of the upper annular table (9).

5. The grain delivery valve of claim 1, wherein: the hydraulic cylinder (8) is a servo hydraulic cylinder.