CN216200632U

CN216200632U - Combined metering valve

Info

Publication number: CN216200632U
Application number: CN202122638216.9U
Authority: CN
Inventors: 张森; 武志忠
Original assignee: Shanghai Donggen Equipment Engineering Technology Co ltd
Current assignee: Shanghai Donggen Equipment Engineering Technology Co ltd
Priority date: 2021-10-30
Filing date: 2021-10-30
Publication date: 2022-04-05
Anticipated expiration: 2031-10-30

Abstract

The application relates to a combined metering valve, which relates to the field of metering valves and comprises a valve body, wherein a chamber is formed in the valve body and penetrates through the valve body along a material conveying direction; coaxial rotation is provided with a plurality of thick valve clacks and a plurality of thin valve clacks in the valve body, arbitrary the equal diameter of thin valve clack is less than the diameter of thick valve clack, rotate on the lateral wall of valve body and wear to be equipped with first pivot and second pivot, the axis coincidence of first pivot and second pivot, first pivot is worn into in the cavity and is connected with the transmission of thick valve clack, the second pivot penetrates in the cavity and is connected with the transmission of thin valve clack, be provided with in the second pivot and be used for restricting second pivot pivoted locking subassembly. This application has the volume of carrying the material comparatively accurate, longer advantage of life.

Description

Combined metering valve

Technical Field

The present application relates to the field of metering valves, and more particularly, to a combined metering valve.

Background

The combined metering valve is a valve for conveying powder, particles and jelly, combines different characteristics and functions of a rotary valve and a butterfly valve in a processing technology, and realizes the processing technology of quantitative feeding in the most economical mode.

Among the correlation technique, a modular metering valve, including the valve body, the valve body internal rotation is provided with thick valve clack and the thick drive assembly of drive thick valve clack pivoted, and thick valve clack central authorities shaping has the mounting groove, and the mounting groove runs through the mounting groove along material direction of delivery, and the rotating turret is equipped with thin valve clack in the mounting groove, and the diameter of thin valve clack is less than the diameter of thick valve clack. When the materials are conveyed, the thick valve clack is driven to rotate by the thick driving assembly, the materials are conveyed to the downstream quickly, then the thick driving assembly stops, the thin driving assembly drives the thin valve clack to rotate, the materials with a certain volume are conveyed to the downstream more accurately, and finally the thin driving assembly stops, so that efficient and accurate material conveying is realized.

In view of the above-mentioned related art, when the thin driving assembly stops, the thin valve flap continues to rotate due to its own inertia, which results in inaccurate volume of material transportation, and there is a need for improvement.

SUMMERY OF THE UTILITY MODEL

In order to improve the accuracy that combination type metering valve transported material volume, this application provides a combination type metering valve.

The application provides a modular metering valve adopts following technical scheme:

a combined metering valve comprises a valve body, wherein a chamber is formed in the valve body and penetrates through the valve body along a material conveying direction; the valve body is internally and coaxially and rotatably provided with a plurality of thick valve flaps and a plurality of thin valve flaps, the average diameter of any thin valve flap is smaller than that of the thick valve flap, a first rotating shaft and a second rotating shaft are rotatably arranged on the side wall of the valve body in a penetrating manner, the axes of the first rotating shaft and the second rotating shaft are superposed, the first rotating shaft penetrates into the cavity and is in transmission connection with the thick valve flaps, and one end of the first rotating shaft, which is positioned outside the valve body, is in transmission connection with a first driving motor; the second rotating shaft penetrates into the cavity and is in transmission connection with the thin valve clack, and one end of the second rotating shaft, which is positioned outside the valve body, is in transmission connection with a second driving motor; and a stop component for limiting the rotation of the second rotating shaft is arranged on the second rotating shaft.

By adopting the technical scheme, the first rotating shaft drives the thick valve clack to rotate so as to quickly convey most of materials to the downstream, and then the first rotating shaft stops rotating; and then, the second rotating shaft rotates to drive the thin valve clack to rotate so as to convey the accurate amount of materials to downstream, then the second rotating shaft stops rotating, and the stop assembly reduces the condition that when the second rotating shaft stops rotating, more materials are conveyed to downstream due to inertia continuous movement, so that the amount of the materials conveyed by the combined metering valve is inaccurate.

Optionally, the stop assembly includes a stop column and a driving member for driving the stop column to move, the driving member is disposed on the valve body, and one end of the stop column abuts against a surface of the second rotating shaft.

By adopting the technical scheme, when the second rotating shaft is prevented from rotating due to inertia, the driving piece drives the stop column to abut against the surface of the second rotating shaft, the structure is simple and reliable, and the situation that the quantity of materials conveyed by the combined metering valve is inaccurate due to the fact that more materials are conveyed to the downstream by the continuous movement of inertia when the second rotating shaft stops rotating is reduced.

Optionally, a soft friction pad is disposed at one end of the stop column close to the second rotating shaft, and the soft friction pad abuts against the surface of the second rotating shaft.

Through adopting above-mentioned technical scheme, stop post and second pivot when butt rub with the second pivot, prevent the second pivot because of inertial rotation, stop post directly easily leads to the wearing and tearing of second pivot with the friction of second pivot, and life reduces, and soft friction pad has reduced the wearing and tearing of second pivot.

Optionally, the driving member includes a driving cylinder, a cylinder body of the driving cylinder is fixed to a housing of the second driving motor, and one end of the stopping column is fixedly connected to an end of a piston rod of the driving cylinder.

Through adopting above-mentioned technical scheme, drive actuating cylinder drive locking post motion, have the equal faster advantage of reaction and action for the locking post is more quick butt in the second pivot, has reduced when the second pivot stall because inertia continues to move and carries more materials to low reaches, leads to the inaccurate condition of combined metering valve transported substance volume.

Optionally, step surfaces are formed on two open sides of the valve body.

By adopting the technical scheme, the step surface has the characteristic of field processing, the clamping groove or the welding flange and the like can be processed according to different use scenes, and the adaptability of the valve body to different use scenes is improved.

Optionally, a leakage-proof strip is fixed on the periphery of any one of the thick valve flaps.

Through adopting above-mentioned technical scheme, the leak protection strip has reduced when thick valve clack rotates the material through the clearance between thick valve clack and the valve body and not carried the condition to the low reaches, efficiency when helping improving thick valve clack and carrying the material.

Optionally, a guiding arc surface is formed on one side of any thin valve flap in the thickness direction, and the cross-sectional area of any thin valve flap is gradually reduced from the root part to the end part of the thin valve flap.

Through adopting above-mentioned technical scheme, the condition that has got into the material in valve body low reaches and take back the upper reaches exists during thin valve clack motion, is unfavorable for thin valve clack to carry the material of accurate volume, and the guide cambered surface makes the material break away from thin valve clack more easily, helps improving the accuracy that thin valve clack carried the material volume.

Optionally, any one of the surfaces of the thick valve flap and the thin valve flap is provided with a wear-resistant coating.

Through adopting above-mentioned technical scheme, thick valve clack and thin valve clack are easily the material friction when high-speed operation, lead to thick valve clack and thin valve clack wearing and tearing and make thick valve clack and thin valve clack's life reduce, and wear-resisting coating helps reducing the wearing and tearing of thick valve clack and thin valve clack.

In summary, the present application includes at least one of the following beneficial technical effects:

the first rotating shaft drives the thick valve clack to rotate so as to quickly convey most of materials to the downstream, and then the first rotating shaft stops rotating; then, the second rotating shaft rotates to drive the thin valve clack to rotate so as to convey a precise amount of materials to downstream, then the second rotating shaft stops rotating, and the stop assembly reduces the condition that when the second rotating shaft stops rotating, more materials are conveyed to downstream due to inertia continuous movement, so that the amount of the materials conveyed by the combined metering valve is inaccurate;

the adaptability of the valve body to different use scenes is improved by arranging the step surface;

through setting up the guide cambered surface, improved the accuracy that thin valve clack carried the material volume.

Drawings

Fig. 1 is an isometric view of an embodiment of the present application for embodying an integral construction of a metering valve of a modular type;

FIG. 2 is a schematic diagram of an embodiment of the present application, primarily embodying a first rotation aperture and a second rotation aperture;

FIG. 3 is a schematic view mainly used for embodying a guiding cambered surface structure in the embodiment of the present application;

fig. 4 is a schematic view of a stopper assembly structure according to an embodiment of the present application.

Reference numerals: 1. a valve body; 11. a step surface; 2. a chamber; 3. a first rotating shaft; 4. a second rotating shaft; 5. a thick valve clack; 51. a first drive motor; 52. a first rotation hole; 521. a first shaft hole; 522. a second shaft hole; 53. a leak-proof strip; 6. a thin valve flap; 61. a second drive motor; 62. a second rotation hole; 63. guiding the arc surface; 7. a stop assembly; 71. a stopper post; 72. a drive member; 721. a driving cylinder; 722. a soft friction pad; 8. a rotating groove; 9. and (3) wear-resistant coating.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a combined metering valve.

Referring to fig. 1, the valve body 1 is a hollow cylinder, a chamber 2 is formed inside the valve body 1, and the chamber 2 penetrates through the valve body 1 along the axial direction of the valve body 1. The valve body 1 is provided with a first rotating shaft 3 and a second rotating shaft 4 on the side surface in a relatively penetrating manner, the first rotating shaft 3 and the second rotating shaft 4 are coaxially arranged, and the axial directions of the first rotating shaft 3 and the second rotating shaft 4 are perpendicular to the axial direction of the valve body 1. The one end that first pivot 3 penetrated in the valve body 1 is rotated and is connected with thick valve clack 5, and thick valve clack 5 is equipped with a plurality ofly, and the preferred two of this embodiment, two thick valve clacks 5 along the axis symmetric distribution of first pivot 3. The valve body 1 is externally provided with a first driving motor 51, and an output shaft of the first driving motor 51 is coaxially fixed with the first rotating shaft 3. One end of the second rotating shaft 4 penetrating into the valve body 1 is rotatably connected with a plurality of thin valve clacks 6, preferably two thin valve clacks 6 are arranged in the embodiment, and the two thin valve clacks 6 are symmetrically distributed along the axis of the second rotating shaft 4. A second driving motor 61 is further arranged outside the valve body 1, and an output shaft of the second driving motor 61 is coaxially fixed with the second rotating shaft 4. The valve body 1 is also provided with a stop component 7 for limiting the rotation of the second rotating shaft 4.

When carrying the material, the staff starts first driving motor 51 earlier and drives first pivot 3 and rotate, drives thick valve clack 5 and rotates, carries most material to low reaches fast, later the staff restarts second driving motor 61 and drives second pivot 4 and rotate, drives thin valve clack 6 and rotates, after the material transports fixed quantity, second driving motor 61 stops and stop subassembly 7 prevents second pivot 4 and continues to rotate because of inertia, has improved the accuracy that combination formula metering valve carried the material volume.

Referring to fig. 1 and 2, a first rotation hole 52 is formed at the joint of the two thick valve flaps 5, and the axial direction of the rotation hole is parallel to the axial direction of the first rotation shaft 3. The center of the joint of the two thick valve flaps 5 along the thickness direction of the thick valve flaps 5 is provided with a rotating groove 8, the rotating groove 8 is a circular groove, and the rotating groove 8 divides the first rotating hole 52 into a first shaft hole 521 and a second shaft hole 522. The first shaft 3 penetrates into the first shaft hole 521 and is spline-fitted to the first shaft hole 521. Thin valve flap 6 is established in rotating groove 8, and thin valve flap 6's radius equals the radius of rotating groove 8, and the root integrated into one piece of two thin valve flaps 6 just is formed with the second and is rotating the hole, and the diameter of second pivot 4 is less than the diameter of second axle hole 522, and second pivot 4 runs through second axle hole 522 and penetrates in second rotation hole 62, and second pivot 4 penetrates the one end and the second rotation hole 62 keyway cooperation of second rotation hole 62.

Referring to fig. 2, since there is a gap between the thick valve flap 5 and the valve body 1, when the material is conveyed, the material in the gap cannot be conveyed to the downstream by the thick valve flap 5, which results in the conveying efficiency of the thick valve flap 5 becoming low, so that the edges of the two thick valve flaps 5 are fixed with the leakage-proof strips 53.

Referring to fig. 1 and 3, when the thin valve flap 6 conveys materials, the materials conveyed to the downstream are brought back to the upstream, so that a guide arc surface 63 is formed on each thin valve flap 6, and the cross-sectional area of the thin valve flap 6 is gradually reduced along the direction from the root to the edge of the thin valve flap 6, so that the materials attached to the thin valve flap 6 are more easily separated from the thin valve flap 6 due to centrifugal force. The surfaces of the thin valve clack 6 and the thick valve clack 5 are coated with the wear-resistant coating 9, the wear of the thin valve clack 6 and the thick valve clack 5 is reduced by the wear-resistant coating 9, and the service lives of the thin valve clack 6 and the thick valve clack 5 are prolonged.

Referring to fig. 1, the edge of the open both sides of valve body 1 all forms there is step face 11, and step face 11 can be on-the-spot with step face 11 processing for the joint groove is connected with other devices when the user uses, or the welding flange makes valve body 1 can be connected with other devices flange, has improved the adaptability of valve body 1 to different use scenes.

Referring to fig. 4, the stopping assembly 7 includes a stopping column 71 and a driving member 72 for driving the stopping column 71 to move, the driving member 72 is selected from a driving cylinder 721, a cylinder body of the driving cylinder 721 is fixed on a housing of the second driving motor 61, a flexible friction pad 722 is fixed at an end of a piston rod of the driving cylinder 721, and when the stopping assembly 7 prevents the second rotating shaft 4 from rotating, a side of the flexible friction pad 722 away from the driving cylinder 721 abuts against the second rotating shaft 4.

When the stopping assembly 7 stops the rotation of the second rotating shaft 4, the piston rod of the driving cylinder 721 extends to drive the side of the soft friction pad 722 far away from the driving cylinder 721 to abut against the second rotating shaft 4. When the combined metering valve works, the piston rod of the driving cylinder 721 is contracted to drive the flexible friction pad 722 to be far away from the second rotating shaft 4.

The implementation principle of the embodiment of the application is as follows: when conveying materials, a worker starts the first driving motor 51 to drive the first rotating shaft 3 to rotate to drive the thick valve clack 5 to rotate, most of the materials are conveyed to the downstream rapidly, then the worker starts the second driving motor 61 to drive the second rotating shaft 4 to rotate to drive the thin valve clack 6 to rotate, after the materials are conveyed to a fixed quantity, the second driving motor 61 stops, the piston rod of the driving cylinder 721 extends to drive the soft friction pad 722 to be connected with one side of the driving cylinder 721 in an abutting mode on the second rotating shaft 4.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A combined metering valve comprising a valve body (1), characterized in that: a cavity (2) is formed in the valve body (1), and the cavity (2) penetrates through the valve body (1) along the material conveying direction; the valve body (1) is internally and coaxially and rotatably provided with a plurality of thick valve flaps (5) and a plurality of thin valve flaps (6), the uniform diameter of any thin valve flap (6) is smaller than that of the thick valve flap (5), a first rotating shaft (3) and a second rotating shaft (4) are rotatably arranged on the side wall of the valve body (1) in a penetrating manner, the axes of the first rotating shaft (3) and the second rotating shaft (4) are superposed, the first rotating shaft (3) penetrates into the chamber (2) and is in transmission connection with the thick valve flaps (5), and one end, located outside the valve body (1), of the first rotating shaft (3) is in transmission connection with a first driving motor (51); the second rotating shaft (4) penetrates into the chamber (2) and is in transmission connection with the thin valve clack (6), and one end of the second rotating shaft (4) located outside the valve body (1) is in transmission connection with a second driving motor (61); and a stop component (7) for limiting the rotation of the second rotating shaft (4) is arranged on the second rotating shaft (4).

2. A combined metering valve as claimed in claim 1 wherein: the stop assembly (7) comprises a stop column (71) and a driving piece (72) for driving the stop column (71) to move, the driving piece (72) is arranged on the valve body (1), and one end of the stop column (71) abuts against the surface of the second rotating shaft (4).

3. A combined metering valve as claimed in claim 2 wherein: one end of the stop column (71) close to the second rotating shaft (4) is provided with a soft friction pad (722), and the soft friction pad (722) is abutted against the surface of the second rotating shaft (4).

4. A combined metering valve as claimed in claim 2 wherein: the driving part (72) comprises a driving air cylinder (721), the cylinder body of the driving air cylinder (721) is fixed on the shell of the second driving motor (61), and one end of the stopping column (71) is fixedly connected with the end part of the piston rod of the driving air cylinder (721).

5. A combined metering valve as claimed in claim 1 wherein: step surfaces (11) are formed on the two open sides of the valve body (1).

6. A combined metering valve as claimed in claim 1 wherein: and a leakage-proof strip (53) is fixed on the peripheral side of any one of the thick valve clacks (5).

7. A combined metering valve as claimed in claim 1 wherein: one side of any thin valve flap (6) in the thickness direction is formed with a guide cambered surface (63), and the cross-sectional area of any thin valve flap (6) is gradually reduced from the root part to the end part of the thin valve flap (6).

8. A combined metering valve as claimed in claim 1 wherein: and the surfaces of any one of the thick valve clack (5) and the thin valve clack (6) are provided with wear-resistant coatings (9).