Sealing device for feed port of stock bin

Abstract

The utility model discloses a feed port sealing device of a stock bin, which comprises a valve body, a valve plate, a sealing gasket arranged on the valve plate and a linear driving component for driving the valve plate to move, the sealing structure is characterized in that a guide assembly is arranged between the valve body and the valve plate, and the guide assembly is driven by the linear driving assembly to guide the valve plate to move obliquely to close and seal a feeding port of the stock bin. The guide assembly comprises an oblique guide groove, a translation guide groove and a guide wheel, wherein the oblique guide groove is formed in the valve body and used for guiding the valve plate to move obliquely, the translation guide groove is communicated with the upper end of the oblique guide groove and used for guiding the valve plate to move horizontally, and the guide wheel is connected with the valve plate and limited in the oblique guide groove or the translation guide groove. The utility model has the beneficial effects that the guide component is designed, so that the valve plate closes and compresses the sealing surface of the feeding hole in a downward pressing manner, and a good sealing effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batching equipment, and in particular relates to a sealing device for a feed inlet of a silo. Background Art

[0002] In the batching system, after adding materials into the silo, the feed port of the silo needs to be closed to prevent foreign matter from entering the silo. This problem can be solved by installing a gate valve at the feed port. However, for materials that are susceptible to moisture, in addition to closing the feed port, there is also a sealing requirement, and the sealing performance of ordinary gate valves cannot meet the above sealing requirements.

[0003] In order to solve the above problems, in the prior art, a sealing structure that cooperates with the plug plate is provided on the silo to achieve sealing. However, due to the influence of the material on the sealing structure, the sealing effect is not good. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a sealing device for a feed inlet of a silo, which can seal the silo by pressing the feed inlet of the silo through the oblique movement of a valve plate from top to bottom.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a feeding port sealing device for a silo, comprising a valve body, a valve plate, a sealing gasket arranged on the valve plate and a linear drive assembly for driving the valve plate to move, the key point is: a guide assembly is arranged between the valve body and the valve plate for guiding the valve plate to move obliquely to close and seal the feeding port of the silo under the drive of the linear drive assembly, the guide assembly comprises an oblique guide groove arranged on the valve body for guiding the oblique movement of the valve plate, a translation guide groove communicated with the upper end of the oblique guide groove and guiding the horizontal movement of the valve plate, and a guide wheel connected to the valve plate and limited in the oblique guide groove or the translation guide groove.

[0006] Furthermore, two guide wheels are arranged side by side on both sides of the valve plate, and an oblique guide groove and a translation guide groove matching with each guide wheel are provided on the valve body.

[0007] Furthermore, the valve plate is in a groove shape or C shape with a cross section opening downward, the guide wheel is connected to the side wall of the valve plate, and the sealing gasket is arranged at the bottom of the groove of the valve plate.

[0008] Furthermore, a universal ball is provided between the side wall of the valve plate and the valve body.

[0009] Furthermore, a grooved plate is provided in the hole of the side wall of the valve plate, the universal ball is connected to the groove bottom of the grooved plate and at least two universal balls are provided along the length direction of the grooved plate.

[0010] Furthermore, one side of the valve plate is bent upward to form a connecting portion connected to the executing end of the linear drive assembly. The fixed end of the linear drive assembly is connected to the valve body by means of a hinge seat, and the end of the executing end passes through the connecting groove of the connecting portion and is limited in the connecting groove by means of a limiting nut.

[0011] Furthermore, the linear drive assembly is a pneumatic cylinder, an oil cylinder or an electric push rod.

[0012] Furthermore, the valve body includes two symmetrically arranged grooved mounting plates and a connecting plate connecting the two grooved mounting plates, the valve plate is located in the space formed by the two grooved mounting plates, and the oblique guide groove and the translation guide groove are arranged on the grooved mounting plates.

[0013] The beneficial effects of the utility model are as follows: by designing a guide component, the valve plate is closed and pressed against the sealing surface of the feed port in a downward pressure manner, thereby achieving a good sealing effect; the valve plate is made of sheet metal, which can reduce the design, manufacturing and installation costs of parts; the overall device has a simple structure, low cost and good sealing effect.

[0014] The utility model is described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the sealing device for the feed inlet of the silo of the utility model;

[0016] Figure 2 It is a top view of the sealing device for the feed inlet of the silo of the utility model;

[0017] Figure 3 yes Figure 2 Sectional view along AA direction;

[0018] Figure 4 It is a structural schematic diagram of a valve plate in a material inlet sealing device of a silo according to the utility model.

[0019] In the accompanying drawings, 1. valve body, 1-1. oblique guide groove, 1-2. translation guide groove, 1-3. groove-shaped mounting plate, 1-4. connecting plate, 2. valve plate, 2-1. connecting part, 2-2. connecting groove, 3. sealing gasket, 4. linear drive assembly, 5. guide wheel, 6. feed port, 7. universal ball, 8. groove plate, 9. articulated seat, 10. limit nut. DETAILED DESCRIPTION

[0020] See attached Figure 1-4The utility model provides a feeding port sealing device for a silo, comprising a valve body 1, a valve plate 2, a sealing gasket 3 arranged on the valve plate 2 and a linear drive assembly 4 for driving the valve plate 2 to move. The key point is that a guide assembly is arranged between the valve body 1 and the valve plate 2 to guide the valve plate 2 to move obliquely to close and seal the feeding port 6 of the silo under the drive of the linear drive assembly 4. The guide assembly comprises an oblique guide groove 1-1 arranged on the valve body 1 to guide the oblique movement of the valve plate 2, a translation guide groove 1-2 which is connected to the upper end of the oblique guide groove 1-1 and guides the horizontal movement of the valve plate 2, and a guide wheel 5 which is connected to the valve plate 2 and limited in the oblique guide groove 1-1 or the translation guide groove 1-2. When the guide wheel 5 moves from the translation guide groove 1-2 to the oblique guide groove 1-1, it is a process of the valve plate 2 closing and sealing the feeding port 6; when the guide wheel 5 moves from the oblique guide groove 1-1 to the translation guide groove 1-2, it is a process of the valve plate 2 opening the feeding port 6.

[0021] See attached Figure 1 , 2 And 4, in order to ensure the stability of the horizontal and oblique movement of the valve plate 2 to close and seal the feed port 6, two guide wheels 5 are arranged side by side on both sides of the valve plate 2, and an oblique guide groove 1-1 and a translation guide groove 1-2 matching each guide wheel 5 are provided on the valve body 1.

[0022] See attached Figure 3 and 4 The valve plate 2 is a groove or C-shaped with a downward opening in cross section, the guide wheel 5 is connected to the side wall of the valve plate 2, and the sealing gasket 3 is arranged at the bottom of the groove of the valve plate 2. The valve plate 2 is arranged as a sheet metal part, which can reduce the design and installation process of parts and reduce costs.

[0023] See attached Figure 2 and 4 A universal ball 7 is provided between the side wall of the valve plate 2 and the valve body 1 to limit the gap between the side wall of the valve plate 2 and the valve body 1 to ensure that the valve plate 2 does not shake left and right and to prevent the two from contacting and making abnormal noises. A groove plate 8 is provided in the hole of the side wall of the valve plate 2, and the universal ball 7 is connected to the groove bottom of the groove plate 8 and at least two are provided along the length direction of the groove plate 8.

[0024] See attached Figure 1 and 4 One side of the valve plate 2 is bent upward to form a connecting portion 2-1 connected to the actuating end of the linear drive assembly 4. The fixed end of the linear drive assembly is connected to the valve body 1 by means of a hinge seat 9, and the end of the actuating end passes through the connecting groove 2-2 of the connecting portion 2-1 and is limited in the connecting groove 2-2 by means of a limiting nut 10. The above design can ensure that the translation and oblique movement of the valve plate 2 are not affected during driving.

[0025] See attached Figure 1The linear drive assembly 4 is a cylinder, an oil cylinder or an electric push rod. In this embodiment, a cylinder is selected.

[0026] See attached Figure 1 The valve body 1 includes two symmetrically arranged grooved mounting plates 1-3 and a connecting plate 1-4 connecting the two grooved mounting plates 1-3. The valve plate 2 is located in a space enclosed by the two grooved mounting plates 1-3 and the two connecting plates 1-4. The oblique guide groove 1-1 and the translation guide groove 1-2 are arranged on the grooved mounting plates 1-3.

[0027] The specific working process of the device of the utility model is as follows: when the material is dropped, the valve plate 2 is located on one side of the feed port 6 and will not affect the drop of the material. After the feeding is completed, when the feed port 6 needs to be closed and sealed, the solenoid valve is ventilated, and the piston rod of the cylinder extends, driving the valve plate 2 to move forward along the translation guide groove 1-2. The universal ball 7 provided can ensure that the valve plate 2 does not shake left and right when it moves. When the cylinder is at a position about 0.5 seconds before it is fully extended, the guide wheel 5 enters the oblique guide groove 1-1 from the translation guide groove 1-2, and the valve plate 2 moves obliquely downward, thereby pressing the sealing surface of the feed port 6, and the sealing effect is achieved under the action of the sealing gasket 3.

[0028] The above-mentioned actions are reversed to move the valve plate 2 to open the feed port 6 .

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A material inlet sealing device for a silo, comprising a valve body (1), a valve plate (2), a sealing gasket (3) arranged on the valve plate (2), and a linear drive assembly (4) for driving the valve plate (2) to move, characterized in that: A guide assembly is provided between the valve body (1) and the valve plate (2) for guiding the valve plate (2) to move obliquely to close and seal the feed port (6) of the silo under the drive of the linear drive assembly (4), the guide assembly comprising an oblique guide groove (1-1) provided on the valve body (1) for guiding the oblique movement of the valve plate (2), a translation guide groove (1-2) connected to the upper end of the oblique guide groove (1-1) and guiding the horizontal movement of the valve plate (2), and a guide wheel (5) connected to the valve plate (2) and limited in the oblique guide groove (1-1) or the translation guide groove (1-2).

2. The sealing device for the feed port of a silo according to claim 1, characterized in that: Two guide wheels (5) are arranged side by side on both sides of the valve plate (2), and an oblique guide groove (1-1) and a translation guide groove (1-2) matching each guide wheel (5) are provided on the valve body (1).

3. The feeding port sealing device of the silo according to claim 1, characterized in that: The valve plate (2) is in a groove or C-shape with a cross section opening downward, the guide wheel (5) is connected to the side wall of the valve plate (2), and the sealing gasket (3) is arranged at the bottom of the groove of the valve plate (2).

4. The sealing device for the feed port of a silo according to claim 3, characterized in that: A universal ball (7) is provided between the side wall of the valve plate (2) and the valve body (1).

5. The sealing device for the feed port of a silo according to claim 4, characterized in that: A grooved plate (8) is provided in the hole of the side wall of the valve plate (2), the universal ball (7) is connected to the groove bottom of the grooved plate (8), and at least two of the universal balls (7) are provided along the length direction of the grooved plate (8).

6. The feeding port sealing device of a silo according to claim 1, characterized in that: One side of the valve plate (2) is bent upward to form a connecting portion (2-1) connected to the actuating end of the linear drive assembly (4); the fixed end of the linear drive assembly is connected to the valve body (1) by means of a hinge seat (9); the distal end of the actuating end passes through a connecting groove (2-2) of the connecting portion (2-1) and is limited in position in the connecting groove (2-2) by means of a limiting nut (10).

7. The feeding port sealing device of a silo according to claim 1, characterized in that: The linear drive component (4) is a pneumatic cylinder, an oil cylinder or an electric push rod.

8. The sealing device for the feed port of a silo according to any one of claims 1 to 7, characterized in that: The valve body (1) comprises two symmetrically arranged groove-shaped mounting plates (1-3) and a connecting plate (1-4) connecting the two groove-shaped mounting plates (1-3); the valve plate (2) is located in a space formed by the two groove-shaped mounting plates (1-3); and the oblique guide groove (1-1) and the translation guide groove (1-2) are arranged on the groove-shaped mounting plates (1-3).

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