Overflow valve core filter screen closing device

Abstract

The utility model discloses an overflow valve core filter screen closing-in device which comprises a rack and a closing-in mechanism arranged on the rack, an operation table is arranged in the middle of the rack, and a pressing plate is arranged at the top of the rack; the closing-in mechanism comprises an upper die, a lower die and a fixing seat arranged on the upper surface of the operation table, the lower die is in threaded connection with the upper surface of the fixing seat, the upper die is detachably connected with the lower surface of the pressing plate through a clamping mechanism, a die cavity matched with the filter screen is formed in the upper die, the lower die is matched with an inner cavity of the filter screen, and the pressing plate is detachably connected with the lower surface of the pressing plate through a clamping mechanism. The outer edge of the end part of the lower die is provided with a forming part which shrinks towards the axis of the lower die, and a convex ring which is matched with the forming part is arranged in the die cavity and corresponds to the forming part, so that the filter screen is closed up corresponding to the end opening of the forming part. According to the utility model, the upper die and the lower die are arranged in a matched manner, so that the processed filter screen can be conveniently extruded and closed.

Description

Technical Field

[0001] The utility model relates to the technical field of overflow valve core filter screen processing, in particular to an overflow valve core filter screen closing device. Background Art

[0002] In order to prevent the valve core of the overflow valve from being damaged by impurities during use, resulting in damage to the valve core and affecting its service life, a filter is usually installed on the valve core during the production of the overflow valve. The filter of the overflow valve is usually made of a sheet with mesh that is curled and wrapped around the outside of the valve core. In order to prevent the filter from shifting or even falling off on the valve core during use, affecting the normal operation of the overflow valve, it is necessary to close the ends of the filter before installing the filter, so that the filter is more firmly stuck on the valve core. Utility Model Content

[0003] The utility model provides a closing device for a filter screen of a relief valve core. The closing device can close the processed filter screen through the cooperation of an upper die and a lower die.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a relief valve valve core filter closing device, including a frame, a closing mechanism arranged on the frame, an operating table is arranged in the middle of the frame, and a pressure plate is arranged on the top;

[0005] The closing mechanism includes an upper die, a lower die and a fixing seat arranged on the upper surface of the operating table, the lower die is arranged on the fixing seat, the upper die is detachably connected to the lower surface of the pressing plate through a clamping mechanism, the upper die is provided with a die cavity adapted to the filter screen, the lower die is adapted to the inner cavity of the filter screen, a forming part contracting toward its axis is arranged at the outer edge of the end of the lower die, and a convex ring adapted to the forming part is arranged in the cavity corresponding to the forming part, so that the filter screen can close the port corresponding to the forming part. This technical solution can conveniently perform extrusion and closing operations on the processed filter screen through the matching arrangement of the upper die and the lower die.

[0006] Furthermore, the forming portion is formed by chamfering the end of the lower mold, which has a simple structure and is convenient for processing and manufacturing the lower mold.

[0007] Furthermore, the clamping mechanism includes an arc groove and a buckle, wherein the arc groove is provided on the lower surface of the pressing plate, the buckle is fixedly connected to the upper surface of the upper mold, and the buckle is clamped with the inner wall of the arc groove. The upper mold can be conveniently installed and removed through the clamping mechanism, thereby improving the convenience of replacing the mold and being suitable for processing filter screens of different sizes.

[0008] The overflow valve core filter screen closing device of the above technical solution also includes a protection mechanism, which includes a moving plate, a sleeve and an adjusting column. The moving plate is slidably arranged on the upper surface of the operating table, the sleeve is fixedly connected to the upper surface of the moving plate, and the adjusting column and the sleeve are threadedly connected. When replacing the mold, the moving plate can be slid in, and the sleeve and the adjusting column are used to limit the pressure plate to prevent the pressure plate from accidentally moving and causing harm to the operator.

[0009] Furthermore, a wedge block is fixedly connected to the lower surface of the movable plate, a wedge groove is opened on one side of the operating table, and the wedge block and the wedge groove are slidably connected.

[0010] Furthermore, a telescopic rod is provided inside the frame, and the lower surface of the telescopic rod is fixedly connected to the upper surface of the pressing plate.

[0011] Furthermore, a mounting seat is fixedly connected to the front of the frame, and a through hole is opened in the mounting seat.

[0012] The utility model provides a filter screen closing device for a relief valve core, which has the following beneficial effects:

[0013] 1. The utility model is provided by the cooperation of the upper die and the lower die, specifically, by providing a forming part at the end of the lower die, and providing a convex ring that cooperates with the forming part at a position corresponding to the forming part in the die cavity of the upper die, so that the filter screen to be processed can be conveniently squeezed and closed, thereby achieving the purpose of closing the filter screen;

[0014] 2. The utility model can quickly replace the upper mold through the matching arrangement of the arc groove and the buckle, shortening the time required for mold replacement, and is convenient and quick to use;

[0015] 3. The utility model uses the matching arrangement of the movable plate, sleeve and adjusting column. When replacing the mold, the movable plate can be slid in, and the sleeve and adjusting column are used to limit the pressing plate to prevent the pressing plate from accidentally moving and causing harm to the operator, thereby improving the safety of the utility model. In addition, through the matching arrangement of the sleeve and adjusting column, the height of the adjusting column can be adjusted to match molds of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the valve core filter screen closing device of the overflow valve of the utility model;

[0017] Figure 2 It is a schematic structural diagram of a side cross-section of a filter screen closing device of a relief valve core of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the closing mechanism of the closing device of the valve core filter screen of the overflow valve of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the bottom surface of the pressure plate of the overflow valve core filter screen closing device of the utility model.

[0020] In the figure: 1, frame; 2, operating table; 3, pressing plate; 4, upper die; 5, lower die; 6, fixed seat; 7, movable plate; 8, sleeve; 9, adjusting column; 10, arc groove; 11, buckle; 12, filter screen; 13, wedge block; 14, wedge groove; 15, telescopic rod; 16, mounting seat; 17, mold cavity; 18, convex ring; 19, forming part. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Figures 1 to 4 As shown, the overflow valve core filter screen closing device of this embodiment includes a frame 1, a closing mechanism and a protection mechanism. An operating table 2 is provided in the middle of the frame 1, and a pressing plate 3 is provided on the top of the frame 1;

[0023] The closing mechanism includes an upper die 4, a lower die 5 and a fixing seat 6 disposed on the upper surface of the operating table 2. The lower die 5 is threadedly connected to the upper surface of the fixing seat 6, and the upper die 4 is detachably connected to the lower surface of the pressing plate 3 through a clamping mechanism. Figure 1 and 2 As shown, a cavity 17 adapted to the filter screen is provided at the axis of the upper mold 4, the lower mold 5 is adapted to the inner cavity of the filter screen 12, and a molding portion 19 contracted toward the axis thereof is provided at the outer edge of the upper end and / or the lower end of the lower mold 5. In this embodiment, as shown in FIG. Figure 1 and 2 As shown, a forming part 19 is provided at the outer edges of the upper and lower ends of the lower mold 5, and a convex ring 18 adapted to the forming part 19 is provided at the positions corresponding to the two forming parts 19 in the mold cavity 17. The two ends of the filter screen 12 are closed by the cooperation of the convex ring 18 and the forming part 19, and the forming part 19 is formed by rounding the outer edges of the upper and lower ends of the lower mold 5.

[0024] When the filter screen closing device of the overflow valve core of this embodiment is used to close the filter screen, the filter screen 12 is mounted on the lower mold 5. As the upper mold 4 moves downward, the filter screen 12 is located in the mold cavity 17 and the upper mold 4 continues to move downward, so that the filter screen 12 is closed through the cooperation of the upper mold 4 and the lower mold 5. In other embodiments not shown in the figure, a mounting shaft is fixed at the center of the bottom surface of the lower mold 5, and a mounting hole adapted to the mounting shaft is opened at the center of the fixing seat 6. The mounting shaft is inserted into the mounting hole, and the inner diameter of the mounting hole is equal to the diameter of the mounting shaft. The dimensional tolerance ensures that the mounting shaft can be just inserted into the mounting hole and does not shake.

[0025] like Figure 3 As shown, the clamping mechanism of this embodiment includes an arc groove 10 and a buckle 11. The arc groove 10 is opened on the lower surface of the pressure plate 3, and the buckle 11 is fixedly connected to the upper surface of the upper mold 4. The buckle 11 and the inner wall of the arc groove 10 are clamped. A telescopic rod 15 is provided inside the frame 1. The lower surface of the telescopic rod 15 is fixedly connected to the upper surface of the pressure plate 3. A mounting seat 16 is fixedly connected to the front of the frame 1, and a through hole is opened in the mounting seat 16.

[0026] After the buckle 11 is locked in the arc groove 10 and rotated, the upper mold 4 can be fixed on the lower surface of the pressure plate 3. After the filter screen 12 is buckled on the lower mold 5, the telescopic rod 15 can drive the pressure plate 3 to move, and then drive the upper mold 4 on the lower surface of the pressure plate 3 to move, so that the upper mold 4 squeezes and closes the filter screen 12. The position of the frame 1 can be fixed by using bolts to pass through the mounting seat 16 to prevent accidents caused by deviation during use.

[0027] The valve core closing device of the overflow valve in the above embodiment can be used to close the valve core filter screen, and the mold can be easily replaced as needed to be suitable for the production of filter screens of different sizes.

[0028] Embodiment 2: This embodiment is formed by adding a protective mechanism on the basis of Embodiment 1. The other structures are the same as those of Embodiment 1 and will not be described in detail here. Figure 1 and 2 As shown, the protection mechanism includes a moving plate 7, a sleeve 8 and an adjusting column 9. The moving plate 7 is slidably arranged on the upper surface of the operating table 2, the sleeve 8 is fixedly connected to the upper surface of the moving plate 7, and the adjusting column 9 is threadedly connected to the sleeve 8. The upper mold 4 can be quickly installed and disassembled using the clamping mechanism. The moving plate 7 can slide horizontally on the operating table 2. After the moving plate 7 is moved to the operating table 2, the sleeve 8 and the adjusting column 9 on the moving plate 7 can support the top pressure plate 3 to prevent the pressure plate 3 from accidentally falling. When the adjusting column 9 is rotated, the adjusting column 9 can extend or retract from the sleeve 8 to adjust the support height.

[0029] In this embodiment, a wedge block 13 is fixedly connected to the lower surface of the movable plate 7, a wedge groove 14 is opened on one side of the operating table 2, and the wedge block 13 and the wedge groove 14 are slidably connected.

[0030] The wedge block 13 and the wedge groove 14 cooperate to allow the movable plate 7 to slide on the operating table 2 along the direction of the wedge groove 14. After sliding outward, the sleeve 8 and the adjusting column 9 can be moved to the outside of the operating table 2. At this time, the pressure plate 3 can squeeze and close the filter screen 12. When replacing the mold, the movable plate 7 is slid onto the operating table 2. At this time, the sleeve 8 and the adjusting column 9 are located at the bottom of the pressure plate 3. When the pressure plate 3 is accidentally started, the pressure plate 3 can be supported from below to prevent injury to the operator.

[0031] The specific implementation methods provided by the utility model are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A relief valve core filter closing device, characterized in that: It comprises a frame (1) and a closing mechanism arranged on the frame, wherein an operating table (2) is arranged in the middle of the frame (1) and a pressing plate (3) is arranged on the top; The closing mechanism comprises an upper die (4), a lower die (5) and a fixing seat (6) arranged on the upper surface of the operating table (2); the lower die (5) is arranged on the fixing seat (6); the upper die (4) is detachably connected to the lower surface of the pressing plate (3) via a clamping mechanism; a die cavity (17) adapted to the filter screen is provided on the upper die (4); the lower die (5) is adapted to the inner cavity of the filter screen; a forming portion (19) contracting toward its axis is provided at the outer edge of the end of the lower die (5); a convex ring (18) adapted to the forming portion (19) is provided in the die cavity (17) at a position corresponding to the forming portion (19), so that the filter screen (12) is closed corresponding to the port of the forming portion (19).

2. The overflow valve core filter screen closing device according to claim 1, characterized in that: The forming portion (19) is formed by chamfering the end of the lower mold (5).

3. The overflow valve core filter closing device according to claim 1, characterized in that: The clamping mechanism comprises an arc groove (10) and a buckle (11); the arc groove (10) is formed on the lower surface of the pressing plate (3); the buckle (11) is fixedly connected to the upper surface of the upper mold (4); and the buckle (11) is clamped to the inner wall of the arc groove (10).

4. The overflow valve core filter closing device according to claim 1, characterized in that: It also includes a protection mechanism, which includes a moving plate (7), a sleeve (8) and an adjustment column (9), wherein the moving plate (7) is slidably arranged on the upper surface of the operating table (2), the sleeve (8) is fixedly connected to the upper surface of the moving plate (7), and the adjustment column (9) and the sleeve (8) are threadedly connected.

5. The overflow valve core filter closing device according to claim 4 is characterized in that: A wedge block (13) is fixedly connected to the lower surface of the movable plate (7), a wedge groove (14) is provided on one side of the operating table (2), and the wedge block (13) and the wedge groove (14) are slidably connected.

6. The overflow valve core filter screen closing device according to claim 1 or 4, characterized in that: A telescopic rod (15) is provided inside the frame (1), and the lower surface of the telescopic rod (15) is fixedly connected to the upper surface of the pressing plate (3).

7. The overflow valve core filter screen closing device according to claim 1 or 4, characterized in that: A mounting seat (16) is fixedly connected to the front of the frame (1), and a through hole is provided in the mounting seat (16).

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