A rotating snap-fit ​​structure and a convex cap bag filter cap

Abstract

This utility model relates to the field of filter cap technology, and in particular to a rotating snap-fit ​​structure and a convex-cap bag-type filter cap, including a snap-fit ​​assembly. The snap-fit ​​assembly includes a housing, inside which a rotating rod is rotatably connected. A knob is fixedly connected to the upper end of the rotating rod, and a limiting ring is fixedly connected to the outer wall of the rotating rod. A turntable is fixedly connected to the lower end of the rotating rod, and connecting rods are movably connected to both sides of the turntable. A locking block is movably connected to the outer wall of the connecting rods. A bolt is threadedly connected to the inside of the housing, and two slots are formed inside the limiting ring. The end of the bolt is slidably connected to the slot inside the limiting ring. In this utility model, rotating the bolt causes it to be threadedly connected inside the housing, and its end is locked in the slot inside the limiting ring, thus preventing the limiting ring from rotating in the opposite direction and causing the rotating rod and turntable to rotate, and preventing their rotation from affecting the position of the locking block.

Description

Technical Field

[0001] This utility model relates to the field of filter cap technology, and in particular to a rotating snap-fit ​​structure and a convex cap bag-type filter cap. Background Technology

[0002] The convex cap of a bag filter is one of the core components of a bag filter. It is used to quickly seal and fix the filter bag, ensuring that there is no leakage of liquid or gas during the filtration process, and at the same time, it facilitates the replacement of the filter bag. It is usually connected to the filter housing by means of snaps, bolts, or rotation locking.

[0003] In existing technologies, conventional glands are usually connected by snaps, bolts, or rotational locking. When using a rotational snap structure, the movement of the locking block is achieved by rotation. Although the locking block can be locked inside the gland and the filter housing, the rotating rod is not limited, which can easily cause the rotating rod to rotate and reverse, causing the locking block to slide out of the filter housing, resulting in a loose gland and affecting the sealing effect. Summary of the Invention

[0004] In view of this, the present invention provides a rotating buckle structure and a convex cover bag filter cap. The main technical problem to be solved is that: the rotating buckle is used to limit and fix the cap to the filter housing, but the rotating rod is not limited and fixed, which causes the rotating rod to reverse and cause the locking block to slide out of the filter housing, resulting in the cap loosening and affecting the sealing effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rotating buckle structure, comprising a buckle assembly, the buckle assembly including a cover, a rotating rod rotatably connected inside the cover, a knob fixedly connected to the upper end of the rotating rod, a limit ring fixedly connected to the outer wall of the rotating rod, a turntable fixedly connected to the lower end of the rotating rod, connecting rods movably connected to both sides inside the turntable, a locking block movably connected to the outer wall of the connecting rod, a bolt threadedly connected inside the cover, and two slots opened inside the limit ring, the end of the bolt slidably connected to the slot inside the limit ring.

[0006] By adopting the above technical solution, rotating the knob drives the rotating rod, turntable and limiting ring to rotate. The rotation of the turntable drives the connecting rod to rotate by an angle, which in turn drives the locking block to move. The locking block moves to a horizontally extended state. After the locking block extends horizontally, the bolt is threaded into the inside of the cover and its end is inserted into the limiting ring and one of the slots inside. The limiting ring is limited to prevent the limiting ring from reversing and causing the rotating rod and turntable to rotate, affecting the position of the locking block and preventing the pressure cover from loosening.

[0007] As a further description of the above technical solution: the rotating rod is limited to rotating inside the cover, the limiting ring is disposed above the turntable, and the limiting ring is disposed inside the cover.

[0008] By adopting the above technical solution, the rotating rod is limited to rotate inside the cover, preventing the rotating rod from moving up and down.

[0009] As a further description of the above technical solution: the two connecting rods are symmetrically arranged on both sides of the inside of the turntable, the two connecting rods are limited to rotating inside the turntable, and the connecting rods are limited to rotating inside the locking block.

[0010] By adopting the above technical solution, the connecting rod is limited to rotate inside the turntable and the locking block, which is used to connect the turntable and the locking block.

[0011] As a further description of the above technical solution: two semi-circular grooves are opened on both sides of the inside of the card block, one semi-circular groove is located on the left side of the inside of the card block, and the other semi-circular groove is located on the right side of the inside of the card block.

[0012] By adopting the above technical solution, a total of four semi-circular grooves are opened on both sides of the card block, with two on each side.

[0013] A convex-cap bag filter cap, using the aforementioned rotary snap-fit ​​structure, includes a cap assembly. The cap assembly includes a cover plate, the inside of which is provided with four locking pins. The cover plate is slidably connected to the outer wall of a locking block, and the locking pins are slidably connected to the inside of a semi-circular groove. A plug is fixedly connected to the lower surface of the cover plate, and a sealing ring is fixedly connected to the outer wall of the plug. Four limiting brackets are fixedly connected to the outer wall of the cover plate.

[0014] By adopting the above technical solution, when the locking block slides inside the cover plate, it squeezes the locking pin that slides inside the cover plate. When the position of the semi-circular groove is aligned with the position of the locking pin, the locking pin is locked inside the semi-circular groove, thereby fixing the locking block inside the cover plate. The plug body, together with the sealing ring, seals the upper end of the filter housing. The limiting frame can be located outside the upper end of the filter housing. A limiting rod corresponding to the position of the limiting frame can be fixed on the upper end of the filter housing, and the limiting frame is locked on the outer wall of the limiting rod to limit the cover plate and prevent the cover plate from rotating.

[0015] As a further description of the above technical solution: the locking pin slides inside the cover plate, and four springs are provided inside the cover plate, with each of the four springs corresponding to one of the four cover plates.

[0016] By adopting the above technical solution, the locking pin is supported by a spring.

[0017] As a further description of the above technical solution: one end of the spring is fixedly connected to the inside of the cover plate, and the other end of the spring is fixedly connected to the inside of the locking pin.

[0018] By adopting the above technical solution, the two ends of the spring are fixed inside the locking pin and the cover plate respectively, which facilitates the flexible sliding of the locking pin and can drive the locking pin to automatically reset.

[0019] As a further description of the above technical solution: the cover plate is fixedly connected to the lower surface of the housing, and the cover plate is movably connected to the outer wall of the rotating rod.

[0020] By adopting the above technical solution, the cover plate can be easily removed through the cover, and the rotating rod passes through the cover plate and is rotatably connected inside the cover plate.

[0021] By employing the above technical solutions, the rotary snap-fit ​​structure and the convex cap bag filter cap of this utility model have at least the following beneficial effects: 1. Compared with the prior art, this rotary buckle structure, through the setting of a rotating rod, knob, turntable, connecting rod, locking block, limiting ring and bolt, when the knob is turned, it causes the rotating rod and turntable to rotate, causing the connecting rod to rotate and move the locking block. At the same time, it also causes the limiting ring to rotate. The rotation of the limiting ring causes the internal slot to change angle. Rotating the bolt causes its threaded connection to the inside of the cover and causes its end to be locked in the slot inside the limiting ring. This prevents the limiting ring from rotating in the opposite direction and causing the rotating rod and turntable to rotate, and prevents their rotation from affecting the position of the locking block.

[0022] 2. Compared with the prior art, this convex-cap bag filter cap, through the setting of a locking pin, spring and limiting frame, when the locking block slides inside the cover plate, first squeezes the locking pin and compresses the spring. When the semi-circular groove opened inside the locking block aligns with the locking pin, the spring drives the locking pin to reset and cause the locking pin to be locked inside the semi-circular groove, thereby limiting the locking block. When the cover plate is placed on the upper end of the filter housing, a limiting rod can be fixed at the upper end of the filter housing at the corresponding position of the limiting frame, so that the limiting frame is locked on the outer wall of the limiting rod, thereby preventing the cover plate from rotating and facilitating the limiting of the cover plate. Attached Figure Description

[0023] Figure 1 This is an overall structural diagram of a rotating snap-fit ​​structure and a convex-cap bag filter cap proposed in this utility model; Figure 2 This utility model provides a structural diagram of a rotating snap-fit ​​structure and a snap-fit ​​assembly for a convex-cap bag filter cap. Figure 3 This utility model provides a rotating snap-on structure and a snap-on block structure for a convex-cap bag filter cap. Figure 4 for Figure 3Enlarged view of point A in the middle; Figure 5 This utility model provides a rotating snap-fit ​​structure and a limiting ring structure for a convex-cap bag filter cap. Figure 6 This utility model presents a rotating snap-fit ​​structure and a capping assembly for a convex-cap bag filter.

[0024] Legend: 1. Snap-fit ​​assembly; 101. Cover; 102. Rotating rod; 103. Knob; 104. Turntable; 105. Connecting rod; 106. Locking block; 107. Limiting ring; 108. Bolt; 109. Semicircular groove; 2. Pressure cap assembly; 201. Cover plate; 202. Locking pin; 203. Spring; 204. Plug; 205. Sealing ring; 206. Limiting bracket. Detailed Implementation

[0025] Reference Figure 1-6 This utility model provides a rotating buckle structure, including a buckle assembly 1. The buckle assembly 1 includes a cover 101. A rotating rod 102 is rotatably connected inside the cover 101. A knob 103 is fixedly connected to the upper end of the rotating rod 102. The knob 103 is used to rotate the rotating rod 102. A limit ring 107 is fixedly connected to the outer wall of the rotating rod 102. A turntable 104 is fixedly connected to the lower end of the rotating rod 102. A connecting rod 105 is movably connected to both sides inside the turntable 104. A locking block 106 is movably connected to the outer wall of the connecting rod 105. A bolt 108 is threadedly connected inside the cover 101. Two slots are opened inside the limit ring 107. The end of the bolt 108 is slidably connected to the slot inside the limit ring 107. Rotating the knob 103 drives the rotating rod 102, the turntable 104, and the limit ring 107 to rotate, thereby driving the connecting rod 105 to rotate by an angle and causing the locking block 106 to move. When the locking block 106 moves to a horizontally extended state, as... Figure 1 and Figure 2As shown, the locking block 106 is currently locked inside the filter housing. One of the slots inside the limiting ring 107 corresponds to the position of the bolt 108, so the bolt 108 can be rotated so that its end is locked in one of the slots inside the limiting ring 107. At this time, the limiting ring 107 is fixed and cannot rotate flexibly, thus limiting the position of the locking block 106 and preventing the locking block 106 from shifting and causing the pressure cap to loosen. The rotating rod 102 is limited to rotating inside the cover 101. The limiting ring 107 is set above the turntable 104 and inside the cover 101. The two connecting rods 105 are symmetrically arranged on both sides inside the turntable 104. The two connecting rods 105 are limited to rotating inside the turntable 104 and inside the locking block 106. Two semi-circular grooves 109 are opened on both sides inside the locking block 106. One semi-circular groove 109 is located on the left side inside the locking block 106, and the other semi-circular groove 109 is located on the right side inside the locking block 106. A convex-cap bag filter cap includes a cap assembly 2, which includes a cover plate 201. Four locking pins 202 are disposed inside the cover plate 201. The cover plate 201 is slidably connected to the outer wall of a locking block 106, and the locking pins 202 are slidably connected to the inside of a semi-circular groove 109. Figure 3 As shown, four locking pins 202 are respectively engaged inside the semi-circular grooves 109 opened on both sides of the two locking blocks 106, limiting and fixing the locking blocks 106 inside the cover plate 201. A plug body 204 is fixedly connected to the lower surface of the cover plate 201, and a sealing ring 205 made of rubber is fixedly connected to the outer wall of the plug body 204. The plug body 204 and the sealing ring 205 are placed inside the filter housing to seal the filter. Four limiting brackets 206 are fixedly connected to the outer wall of the cover plate 201, and four limiting rods are fixed above the filter housing. During the placement of the cover plate 201, the limiting brackets 206 are... The cover plate 201 is locked on the outer wall of the limiting rod to prevent it from rotating. The locking pin 202 is limited to slide inside the cover plate 201. Four springs 203 are provided inside the cover plate 201. The four springs 203 correspond to the four cover plates 201 respectively. One end of the spring 203 is fixedly connected to the inside of the cover plate 201, and the other end of the spring 203 is fixedly connected to the inside of the locking pin 202. The springs 203 support the locking pin 202 and can also automatically reset the locking pin 202. The cover plate 201 is fixedly connected to the lower surface of the cover 101 and is movably connected to the outer wall of the rotating rod 102.

[0026] Working principle: During use, four limiting rods are fixed to the upper end of the filter housing. The cover plate 201 is moved by removing the cover 101, aligning it with the upper end of the filter housing. The four limiting brackets 206 on the outer wall of the cover plate 201 are aligned with the limiting rods. Then, the cover plate 201 is moved downwards, simultaneously moving the plug 204 and sealing ring 205 downwards, sealing them inside the upper end of the filter housing. The lower surface of the cover plate 201 contacts the upper surface of the filter housing. At this time, the limiting brackets 206 are engaged with the outer wall of the limiting rods, fixing the cover plate 201 to the upper surface of the filter housing and preventing rotation. The locking blocks 106 inside the cover plate 201 are in a neutral position. Figure 5 When the cover plate 201 needs to be fixed to the filter housing, rotate the bolt 108 and disengage its end from the slot inside the limiting ring 107. Then rotate the knob 103 to cause the rotating rod 102, the limiting ring 107, and the turntable 104 to rotate. Figure 5 The slot inside the limiting ring 107, located to the left of bolt 108, moves to the right and aligns with bolt 108. The rotation of turntable 104 causes connecting rod 105 to rotate, causing locking block 106 to slide within cover plate 201. As locking block 106 slides, it will... Figure 5 The semi-circular groove 109, which is held in place by the locking pin 202, moves, thereby pressing the locking pin 202 through the movement of the locking block 106 and the semi-circular groove 109. Figure 5 When the semicircular groove 109 located on the right side of the locking pin 202 moves to the position corresponding to the locking pin 202, the locking pin 202 is automatically reset by the spring 203 and pops out to lock inside the semicircular groove 109 on the right side, thereby limiting and fixing the locking block 106. At this time, the state of the locking block 106 after adjustment is as follows: Figure 1 and Figure 2 As shown, the locking block 106 can be fixed inside the cover plate 201, and the locking block 106 is also locked inside the filter housing. At this time, the slot inside the limiting ring 107, which was originally located to the left of the bolt 108, is aligned with the bolt 108. Simply rotate the bolt 108 so that its end slides into the slot inside the left limiting ring 107 to fix the limiting ring 107. This prevents the limiting ring 107 from rotating and causing the rotating rod 102 and the turntable 104 to rotate, which would cause the locking block 106 to slide. By limiting the locking, the cover plate 201 is stably installed on the upper surface of the filter housing, and the plug 204 and the sealing ring 205 are stably placed inside the upper part of the filter housing for sealing.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotating snap-fit ​​structure, comprising a snap-fit ​​assembly (1), characterized in that: The buckle assembly (1) includes a cover (101), a rotating rod (102) is rotatably connected inside the cover (101), a knob (103) is fixedly connected to the upper end of the rotating rod (102), a limiting ring (107) is fixedly connected to the outer wall of the rotating rod (102), a turntable (104) is fixedly connected to the lower end of the rotating rod (102), a connecting rod (105) is movably connected to both sides inside the turntable (104), a locking block (106) is movably connected to the outer wall of the connecting rod (105), a bolt (108) is threadedly connected inside the cover (101), and two slots are opened inside the limiting ring (107), the end of the bolt (108) is slidably connected in the slot inside the limiting ring (107).

2. The rotary snap-fit ​​structure according to claim 1, characterized in that: The rotating rod (102) is limited to rotating inside the cover (101), and the limiting ring (107) is located above the turntable (104) and inside the cover (101).

3. The rotary snap-fit ​​structure according to claim 1, characterized in that: The two connecting rods (105) are symmetrically arranged on both sides of the inside of the turntable (104). The two connecting rods (105) are limited to rotating inside the turntable (104), and the connecting rods (105) are limited to rotating inside the locking block (106).

4. The rotary snap-fit ​​structure according to claim 3, characterized in that: Two semi-circular grooves (109) are provided on both sides of the inside of the card block (106). One semi-circular groove (109) is located on the left side of the inside of the card block (106), and the other semi-circular groove (109) is located on the right side of the inside of the card block (106).

5. A convex-cap bag filter cap, using a rotating snap-fit ​​structure according to any one of claims 1-4, comprising a cap assembly (2), characterized in that: The capping assembly (2) includes a cover plate (201), the inside of which is provided with four locking pins (202). The cover plate (201) is slidably connected to the outer wall of the locking block (106), and the locking pins (202) are slidably connected to the inside of the semi-circular groove (109). A plug (204) is fixedly connected to the lower surface of the cover plate (201), and a sealing ring (205) is fixedly connected to the outer wall of the plug (204). Four limiting brackets (206) are fixedly connected to the outer wall of the cover plate (201).

6. The convex-cap bag filter cap according to claim 5, characterized in that: The locking pin (202) is limited to slide inside the cover plate (201). The cover plate (201) is provided with four springs (203), and the four springs (203) correspond to the four cover plates (201) respectively.

7. A convex-cap bag filter cap according to claim 6, characterized in that: One end of the spring (203) is fixedly connected to the inside of the cover plate (201), and the other end of the spring (203) is fixedly connected to the inside of the locking pin (202).

8. A convex-cap bag filter cap according to claim 5, characterized in that: The cover plate (201) is fixedly connected to the lower surface of the cover (101), and the cover plate (201) is movably connected to the outer wall of the rotating rod (102).

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