Flow-aiding amplifier structure of scissor valve

Abstract

The utility model discloses a scissor valve flow-aiding amplifier structure which comprises a supporting frame, a flow-aiding assembly and a scissor assembly, and an air cylinder is fixedly installed on the top of the supporting frame. The open end of the fixing shaft is sleeved with the supporting strip, and the supporting strip is fixed to the connecting base through the locking rod, so that the supporting strip can serve as a supporting assembly of the fixing shaft to provide prestress in the vertical direction for the supporting strip, the fatigue resistance of the fixing shaft is improved, deformation of the fixing shaft is avoided, meanwhile, the locking rod can be screwed away from the supporting strip subsequently, and the supporting strip is pulled horizontally; the convex rods synchronously slide along the sliding grooves until the supporting strips are separated from the fixing shaft, then the supporting strips can be turned over to be attracted to the inner surface wall of the top of the supporting frame, and at the moment, the scissor assembly can be conveniently and rapidly overhauled, so that the stability of the fixing shaft is guaranteed, overall disassembly is not needed when the scissor assembly is overhauled by turning over and storing the supporting strips, and the maintenance efficiency is improved. And the use convenience of the supporting strip is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of scissor valves, in particular to a scissor valve flow-assisting amplifier structure. Background Art

[0002] The scissor valve flow amplifier is a device used by packaging machines, weighing machines and other equipment to control the flow of materials. The working process of the scissor valve is to drive the scissor-shaped valve through the cylinder and connecting rod mechanism to control the size of the opening of the scissor blade, and control the cross-sectional area of ​​the material flowing through the rubber tube through the opening of the scissor blade, thereby achieving the purpose of controlling the flow of materials.

[0003] The scissor valve flow-assisting amplifier is mostly composed of a cylinder, a fixed shaft, a scissor assembly and a flow-assisting assembly. The fixed shaft is arranged in the middle of the scissor assembly to limit the vertical displacement of the scissor assembly as a whole. The cylinder drives the connecting rod in the scissor assembly to fold, and then the spacing of the blade part is linked to change, so as to achieve the effect of flow control.

[0004] The above-mentioned prior art still has the following deficiencies:

[0005] One end of the fixed shaft is connected to the support frame to ensure its own stability. However, in the specific implementation process, there is a certain distance between the scissor assembly and the vertical end of the support frame, which makes the fixed shaft have a long extension. When the scissor assembly is pushed to deform by the cylinder output end, the fixed shaft will be simultaneously subjected to the vertical driving force. However, the fixed shaft has only one support, which makes it easy for the fixed shaft to deform over time. Therefore, it is urgent to propose a corresponding scissor valve flow amplifier structure to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a scissor valve flow-assisting amplifier structure, which has the effect of improving the fatigue resistance of a fixed shaft.

[0007] The utility model is realized by the following technical solutions:

[0008] The scissor valve flow-assisting amplifier structure includes a support frame, a flow-assisting assembly and a scissor assembly. A cylinder is fixedly installed on the top of the support frame, and the output end of the cylinder is hinged to the scissor assembly. A fixed shaft that movably cooperates with the scissor assembly is fixedly installed on the vertical end of the support frame, and also includes:

[0009] A support mechanism for fixed shaft support, the support mechanism includes a support bar, a connecting seat and a movable component for storing the support bar, the connecting seat is fixedly installed at the bottom of the horizontal end of the support frame, the support bar and the connecting seat are fixedly connected by a locking rod, and the support bar is sleeved on the outer wall of the open end of the fixed shaft.

[0010] It is further configured as follows: the fixed shaft is passed through the vertical end of the support frame, and a matching head is fixedly installed on the side of the fixed shaft away from the support bar, and the matching head is fixedly connected to the outer wall of the vertical end of the support frame by screws.

[0011] It is further configured that: the outer surface wall of the arc-shaped end of the mating head is screwed and connected with a protective cover, and the inner surface wall of the vertical end of the protective cover is in contact with the outer surface wall of the vertical end of the mating head.

[0012] It is further configured as follows: an elastic ring is fixedly installed on one side of the horizontal end of the protective cover, and the outer wall of the elastic ring abuts against the outer wall of the vertical end of the support frame.

[0013] The further configuration is as follows: the movable component includes a convex rod, the convex rod is fixedly connected to the support bar, the convex rod is fixedly connected to the inner surface wall of the connecting seat through a horizontally arranged slide groove, and a positioning piece for positioning the support bar is arranged between the side of the support bar away from the scissors assembly and the inner surface wall of the bottom of the support frame.

[0014] It is further configured as follows: the positioning member includes a magnetic block and a metal sheet, the magnetic block is fixedly mounted on the outer wall of the support bar, the metal sheet is fixedly mounted on the inner wall of the bottom of the support frame, and the metal sheet is magnetically connected to the magnetic sheet.

[0015] To sum up, the beneficial technical effect of the utility model is as follows: the support bar is sleeved on the open end of the fixed shaft, and it is fixed to the connecting seat by the locking rod, so that the support bar can be used as a support component of the fixed shaft, providing the support bar with prestress in the vertical direction, thereby improving the fatigue resistance of the fixed shaft and avoiding its deformation. At the same time, the locking rod can be subsequently rotated away from the support bar, and the support bar can be pulled horizontally, and the convex rod slides along the slide groove synchronously until the support bar is separated from the fixed shaft. Then the support bar can be flipped over so that it is attracted to the inner surface wall at the top of the support frame. At this time, the scissors assembly can be conveniently inspected and maintained, thereby ensuring the stability of the fixed shaft and being able to flip and store the support bar so that it does not need to be dismantled as a whole when the scissors assembly is inspected, thereby ensuring the convenience of the support bar itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric diagram of an embodiment of the utility model, mainly used to show the overall structural schematic diagram;

[0017] Figure 2 It is an axial view of an embodiment of the utility model, mainly used to show the schematic diagram of the protective cover structure;

[0018] Figure 3 It is a partial axial view of an embodiment of the utility model, mainly used to show the schematic diagram of the connecting seat structure;

[0019] Figure 4It is a partial cross-sectional view of an embodiment of the utility model, mainly used to show the schematic diagram of the matching head structure.

[0020] Figure numerals: 1. support frame; 2. cylinder; 3. fixed shaft; 4. flow-aiding assembly; 5. scissors assembly; 6. support bar; 7. protective cover; 8. connecting seat; 9. slide groove; 10. protruding rod; 11. locking rod; 12. mating head; 13. elastic ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] Reference Figure 1-4 , is a scissor valve flow-assisting amplifier structure disclosed in the utility model, comprising a support frame 1, a flow-assisting component 4 and a scissor component 5, a cylinder 2 is fixedly installed on the top of the support frame 1, the output end of the cylinder 2 is hinged to the scissor component 5, a fixed shaft 3 that is movably matched with the scissor component 5 is fixedly installed on the vertical end of the support frame 1, and also includes:

[0024] A support mechanism for supporting the fixed shaft 3, the support mechanism includes a support bar 6, a connecting seat 8 and a movable component for accommodating the support bar 6, the connecting seat 8 is fixedly installed at the bottom of the horizontal end of the support frame 1, the support bar 6 and the connecting seat 8 are fixedly connected by a locking rod 11, and the support bar 6 is sleeved on the outer wall of the open end of the fixed shaft 3;

[0025] The support bar 6 is sleeved on the open end of the fixed shaft 3, and it is fixed to the connecting seat 8 by the locking rod 11, so that the support bar 6 can be used as a supporting component of the fixed shaft 3, providing the fixed shaft 3 with prestress in the vertical direction, thereby improving the fatigue resistance of the fixed shaft 3 and preventing it from deforming. At the same time, the locking rod 11 can be subsequently rotated away from the support bar 6, and the support bar 6 can be pulled horizontally, and the protruding rod 10 slides along the slide groove 9 synchronously until the support bar 6 is separated from the fixed shaft 3. Then the support bar 6 can be flipped over and attracted to the inner surface wall at the top of the support frame 1. At this time, the scissors assembly 5 can be conveniently inspected and maintained, thereby ensuring the stability of the fixed shaft 3 and being able to flip and store the support bar 6 so that it does not need to be dismantled as a whole when the scissors assembly 5 is inspected, thereby ensuring the convenience of the support bar 6 itself.

[0026] The fixed shaft 3 is passed through the vertical end of the support frame 1, and a mating head 12 is fixedly installed on the side of the fixed shaft 3 away from the support bar 6. The mating head 12 is fixedly connected to the outer wall of the vertical end of the support frame 1 by screws, thereby ensuring the convenience of disassembly and assembly of the fixed shaft 3.

[0027] The outer wall of the arc-shaped end of the mating head 12 is screwed with a protective cover 7, and the inner wall of the vertical end of the protective cover 7 abuts against the outer wall of the vertical end of the mating head 12. The protective cover 7 is mounted on the outside of the mating head 12, and the inner wall of the vertical end abuts against the screw head on the outside of the mating head 12, which can limit the axial loosening of the screw.

[0028] An elastic ring 13 is fixedly mounted on one side of the horizontal end of the protective cover 7 , and the outer wall of the elastic ring 13 abuts against the outer wall of the vertical end of the support frame 1 , thereby ensuring the airtightness between the protective cover 7 and the support frame 1 .

[0029] The movable component includes a convex rod 10, which is fixedly connected to the support bar 6. The convex rod 10 is fixedly connected to the inner wall of the connecting seat 8 through a horizontally arranged slide groove 9. A positioning piece for positioning the support bar 6 is arranged between the side of the support bar 6 away from the scissors assembly 5 and the bottom inner wall of the support frame 1. When the support bar 6 is pulled horizontally, the convex rod 10 slides synchronously along the slide groove 9 until the support bar 6 is separated from the fixed shaft 3, and then the support bar 6 can be flipped.

[0030] The positioning piece includes a magnetic block and a metal sheet. The magnetic block is fixedly installed on the outer wall of the support bar 6, and the metal sheet is fixedly installed on the inner wall of the bottom of the support frame 1. The metal sheet and the magnetic sheet are magnetically connected. After the support bar 6 is flipped over to fit the inner wall of the bottom of the support frame 1, the attraction between the magnetic sheet and the metal sheet ensures that the position of the support bar 6 is stable.

[0031] The working principle and beneficial effects of the utility model are as follows: the support bar 6 is sleeved on the open end of the fixed shaft 3, and it is fixed to the connecting seat 8 by the locking rod 11, so that the support bar 6 can be used as a supporting component of the fixed shaft 3, providing the fixed shaft 3 with prestress in the vertical direction, thereby improving the fatigue resistance of the fixed shaft 3 and avoiding its deformation. At the same time, the locking rod 11 can be subsequently rotated away from the support bar 6, and the support bar 6 can be pulled horizontally, and the protruding rod 10 slides along the slide groove 9 synchronously until the support bar 6 is separated from the fixed shaft 3, and then the support bar 6 can be flipped over and attracted to the inner surface wall at the top of the support frame 1. At this time, the scissors assembly 5 can be conveniently inspected and maintained, thereby ensuring the stability of the fixed shaft 3, and the support bar 6 can be flipped and stored, so that it does not need to be dismantled as a whole when the scissors assembly 5 is inspected, thereby ensuring the convenience of the support bar 6 itself.

[0032] The above description is only a preferred specific implementation method of the present utility model, and does not limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A scissor valve flow-assisting amplifier structure, comprising a support frame (1), a flow-assisting component (4) and a scissor component (5), characterized in that: A cylinder (2) is fixedly mounted on the top of the support frame (1); the output end of the cylinder (2) is hingedly connected to the scissor assembly (5); a fixed shaft (3) movably matched with the scissor assembly (5) is fixedly mounted on the vertical end of the support frame (1); and the support frame (1) further comprises: A support mechanism for supporting a fixed shaft (3), the support mechanism comprising a support bar (6), a connecting seat (8) and a movable component for accommodating the support bar (6); the connecting seat (8) is fixedly mounted on the bottom of the horizontal end of the support frame (1); the support bar (6) and the connecting seat (8) are fixedly connected via a locking rod (11); and the support bar (6) is sleeved on the outer wall of the open end of the fixed shaft (3).

2. The scissor valve flow-assisting amplifier structure according to claim 1 is characterized in that: The fixed shaft (3) is inserted into the vertical end of the support frame (1), and a matching head (12) is fixedly installed on the side of the fixed shaft (3) away from the support bar (6), and the matching head (12) is fixedly connected to the outer wall of the vertical end of the support frame (1) by screws.

3. The scissor valve flow-assisting amplifier structure according to claim 2 is characterized in that: The outer surface wall of the arc-shaped end of the mating head (12) is screwed together with a protective cover (7), and the inner surface wall of the vertical end of the protective cover (7) is in contact with the outer surface wall of the vertical end of the mating head (12).

4. The scissor valve flow-assisting amplifier structure according to claim 3 is characterized in that: An elastic ring (13) is fixedly mounted on one side of the horizontal end of the protective cover (7), and the outer wall of the elastic ring (13) abuts against the outer wall of the vertical end of the support frame (1).

5. The scissor valve flow-assisting amplifier structure according to claim 1 is characterized in that: The movable component comprises a protruding rod (10), the protruding rod (10) is fixedly connected to the support bar (6), the protruding rod (10) is fixedly connected to the inner surface wall of the connecting seat (8) through a horizontally arranged sliding groove (9), and a positioning member for positioning the support bar (6) is arranged between the side of the support bar (6) away from the scissors assembly (5) and the inner surface wall of the bottom of the support frame (1).

6. The scissor valve flow-assisting amplifier structure according to claim 1 is characterized in that: The positioning member comprises a magnetic block and a metal sheet, wherein the magnetic block is fixedly mounted on the outer wall of the support bar (6), the metal sheet is fixedly mounted on the inner wall of the bottom of the support frame (1), and the metal sheet is magnetically connected to the magnetic sheet.

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