Filter and door opening and closing locking device thereof

Abstract

The utility model relates to the technical field of filters, in particular to a filter and a door opening and closing locking device thereof, which comprises a filter lower plate, a filter upper plate, hooks and a locking component, the filter lower plate is rotatably connected with the filter upper plate through a hinge, and the lower end face of the filter upper plate is connected with the two parallel hooks. The hook corresponds to a through hole formed in the filter lower plate; and the locking assembly is connected to the filter lower plate. According to the utility model, the matching end of the locking assembly is in a vertical state when in use, the matching end is parallel to the hook, the matching end and the hook are mutually clamped through automatic resetting of the matching end to limit the rotation of the filter upper plate, and when the matching end loses the automatic resetting capability, the matching end can be pushed to rotate through reciprocating movement of the moving end in the loosening assembly; the angle of the moving end is adjusted so that the moving end can push the matching end to rotate clockwise or anticlockwise in the reciprocating movement process.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technology field, concretely relates to a filter and switch door locking device thereof. BACKGROUND

[0002] Stainless steel flat filter is usually made of stainless steel material, has the characteristics of firm and durable. Its structure includes filter plate, filter screen, support and other components. The filter screen is wound into a circle by stainless steel wire or copper wire, and is fixed on the filter plate. When the liquid passes through the filter screen, impurities are blocked on the surface of the filter screen, so as to realize the filtering function.

[0003] The Chinese patent with publication number CN221933220U discloses a filter and switch door locking device, which comprises a filter lower plate and a filter upper plate rotatably connected with the filter lower plate. The filter upper plate is provided with a lock hook, and the filter lower plate is provided with a through hole for the lock hook to pass through. The device further comprises a locking part arranged below the filter lower plate and used for cooperating with the lock hook to lock and unlock the filter upper plate; a guide part provided with a guide groove cooperating with the locking part, the guide groove has a length direction, and the two ends of the length direction are respectively a locking position and an unlocking position; and a driver drivingly connected with the locking part and used for driving the locking part to move back and forth along the length direction of the guide groove to lock and unlock the filter upper plate. The application can effectively lock the filter, has compact structure and high reliability.

[0004] However, in the above technical solution, the locking and unlocking of the hook lock are realized by driving the locking part to rotate along the guide groove through the eccentric wheel, but the locking and unlocking of the device are controlled by mechanical equipment. When the mechanical equipment fails, it is not convenient to manually open and close. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems in the background art and provides a filter and switch door locking device.

[0006] The technical scheme of the utility model is as follows: a switch door locking device, comprising a filter lower plate, a filter upper plate rotatably connected with the filter lower plate, two hooks arranged in parallel and connected with the filter upper plate, a locking assembly connected with the filter lower plate, and a cooperating end of the locking assembly in an initial state being perpendicular to the hooks and limiting the rotation of the filter upper plate.

[0007] Preferably, the locking assembly comprises two mounting plates symmetrically arranged, connected to the lower filter plate, a support shaft rotatably connected to the two mounting plates, a through hole is formed in the mounting plate and passes through the support shaft, two clamping blocks parallel arranged, connected to the support shaft, a number of limiting blocks corresponding to the clamping blocks, connected to the mounting plate, a number of elastic members corresponding to the clamping blocks, the two ends of the elastic member are detachably connected with the clamping block and the limiting block respectively, two release assemblies symmetrically arranged, connected to the mounting plate, and the moving end of the release assembly moves vertically to push the clamping block to rotate clockwise or counterclockwise along the support shaft in use.

[0008] Preferably, the release assembly comprises a threaded rod rotatably connected to the mounting plate, and an adjusting handle connected to one end of the threaded rod, a moving block connected to the threaded rod, and a clamping groove formed in the clamping block.

[0009] Preferably, the clamping groove is rectangular in cross section, the clamping groove is locked at one end close to the hook, and the clamping groove is unlocked at one end away from the hook.

[0010] Preferably, the two ends of the elastic member are connected with dovetail blocks, and the dovetail blocks are matched with dovetail grooves formed in the clamping block and the limiting block.

[0011] Preferably, the moving block is composed of a connecting cylinder, a limiting ring and a moving cylinder, the connecting cylinder is threadedly connected to the threaded rod, one end of the connecting cylinder is connected to the limiting ring, and the moving cylinder is sleeved outside the connecting cylinder.

[0012] Preferably, the adjusting handle is provided with anti-skid lines.

[0013] A filter comprising the door opening and locking device of any one of the preceding claims, a water outlet pipe and a water inlet pipe connected to the lower filter plate and the upper filter plate respectively, an installation groove formed in the lower filter plate, and a protrusion connected to the upper filter plate and matched with the installation groove.

[0014] Compared with the prior art, the above technical scheme of the utility model has the following beneficial technical effects:

[0015] In the utility model, the matching end of the locking assembly is in a vertical state in use, the matching end and the hook are parallel to each other, the automatic reset of the matching end and the hook are matched and limited to rotate the upper filter plate, when the automatic reset ability of the matching end is lost, the reciprocating movement of the moving end of the release assembly can push the matching end to rotate, and the angle of the moving end can be adjusted to make it push the matching end to rotate clockwise or counterclockwise in the reciprocating movement. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the utility model;

[0017] Figure 2 for Figure 1 The main view;

[0018] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure;

[0019] Figure 4 Exploded view of the locking structure;

[0020] Reference numerals: 1. Lower filter plate; 2. Upper filter plate; 3. Hook; 4. Mounting plate; 5. Support shaft; 6. Locking block; 7. Limiting block; 8. Elastic element; 9. Threaded rod; 10. Adjusting handle; 11. Moving block; 12. Locking groove; 13. Dovetail block; 14. Dovetail groove; 15. Connecting cylinder; 16. Limiting ring; 17. Moving cylinder; 18. Water outlet pipe; 19. Water inlet pipe; 20. Mounting groove; 21. Protrusion. Detailed Implementation

[0021] Example 1, as Figures 1-4 As shown, the present invention proposes a door locking device, including a lower filter plate 1, an upper filter plate 2, hooks 3, and a locking assembly. The lower filter plate 1 is rotatably connected to the upper filter plate 2 via a hinge. Two parallel hooks 3 are connected to the lower end face of the upper filter plate 2, and the hooks 3 correspond to the through holes opened on the lower filter plate 1. The locking assembly is connected to the lower filter plate 1. In the initial state, the mating end of the locking assembly is in a vertical state and interlocks with the hooks 3 to restrict the rotation of the upper filter plate 2.

[0022] Example 2, as Figures 2-4 As shown, this utility model proposes a door locking device. Compared with Embodiment 1, this embodiment describes the detailed structure of the locking assembly. The locking assembly includes a mounting plate 4, a support shaft 5, a locking block 6, a limiting block 7, an elastic element 8, and a release assembly. Two mounting plates 4 are symmetrically arranged and connected to the lower end face of the filter lower plate 1. The support shaft 5 is rotatably connected to the two mounting plates 4 through bearings. The mounting plate 4 has a through hole through the support shaft 5. Two locking blocks 6 are arranged in parallel and connected to the support shaft 5. The locking block 6 is fan-shaped, and a protrusion that cooperates with the hook 3 is connected to the side of the locking block 6 near the hook 3. The number of limiting blocks 7 corresponds to the number of locking blocks 6, and the limiting blocks 7 are connected to the mounting plate 4. The number of elastic elements 8 corresponds to the number of locking blocks 6, and the two ends of the elastic element 8 are detachably connected to the locking block 6 and the limiting block 7, respectively. The elastic element 8 is selected from, but is not limited to, a spring plate.

[0023] In an optional embodiment, the elastic member 8 is connected to dovetail blocks 13 at both ends, and the dovetail blocks 13 cooperate with the dovetail grooves 14 opened on the locking block 6 and the limiting block 7.

[0024] There are two symmetrically arranged relaxation components, which are connected to the mounting plate 4. When the relaxation components are in use, the moving end of the relaxation components moves vertically to push the locking block 6 to rotate clockwise or counterclockwise along the support shaft 5.

[0025] The relaxation assembly includes a threaded rod 9, an adjusting handle 10, and a moving block 11. The threaded rod 9 is rotatably connected to the mounting plate 4 by a bearing, and one end of the threaded rod 9 is connected to the adjusting handle 10.

[0026] In an optional embodiment, the adjustment handle 10 is provided with anti-slip texture; the anti-slip texture prevents the adjustment from being difficult due to sweaty hands;

[0027] The movable block 11 is connected to the threaded rod 9, and the movable block 11 cooperates with the slot 12 opened on the locking block 6;

[0028] In an optional embodiment, the movable block 11 is composed of a connecting cylinder 15, a limiting ring 16 and a movable cylinder 17. The connecting cylinder 15 is threadedly connected to the threaded rod 9, one end of the connecting cylinder 15 is connected to the limiting ring 16, and the movable cylinder 17 is sleeved on the outside of the connecting cylinder 15.

[0029] In an optional embodiment, the slot 12 has a rectangular cross-sectional shape, with the end of the slot 12 near the hook 3 being the locking position and the end of the slot 12 away from the hook 3 being the unlocking position.

[0030] Example 3, as Figure 4 As shown, the present invention proposes a filter, including a door locking device as described in Embodiment 1 or Embodiment 2. A water outlet pipe 18 and a water inlet pipe 19 are respectively connected to the lower plate 1 and the upper plate 2 of the filter. An installation groove 20 is provided on the lower plate 1, and a protrusion 21 that cooperates with the installation groove 20 is connected to the upper plate 2 of the filter.

[0031] In summary, when the filter is used, the upper plate 2 of the filter is in an open state, the filter membrane is placed on the mounting groove 20 of the lower plate 1 of the filter, when the upper plate 2 of the filter rotates into a closed state, the convex block 21 extrudes the filter membrane to limit the movement of the filter membrane, at the same time, the hook 3 rotates through the through hole of the lower plate 1 of the filter along with the upper plate 2 of the filter, the hook 3 contacts the clamping block 6, the clamping block 6 rotates around the supporting shaft 5 as the center and compresses the elastic element 8, when the upper plate 2 of the filter is parallel to the lower plate 1 of the filter, the elasticity of the elastic element 8 can make the clamping block 6 automatically reset after losing the extrusion of the hook 3, the protrusion on the clamping block 6 and the hook 3 are mutually clamped and limit the displacement of the hook 3, when the protrusion on the clamping block 6 and the hook 3 need to be separated, the rotating adjusting handle 10 is rotated, the adjusting handle 10 drives the threaded rod 9 to rotate, the moving block 11 moves in the vertical direction into the clamping groove 12, the clamping block 6 rotates around the supporting shaft 5 as the center through the contact between the inclined surface on the moving block 11 and one end of the clamping groove 12, at this time, the inclined surface is close to the limiting block 7, so that the clamping block 6 is away from the hook 3, in the case that the elastic element 8 is lost or fails, the clamping block 6 loses the automatic reset ability, at this time, the moving cylinder 17 is pulled out to rotate 180 degrees, so that the inclined surface is close to the side of the hook 3, the rotating adjusting handle 10 is rotated, the adjusting handle 10 drives the threaded rod 9 to rotate, so that the moving block 11 moves in the vertical direction into the clamping groove 12, the clamping block 6 rotates around the supporting shaft 5 as the center through the contact between the inclined surface on the moving block 11 and one end of the clamping groove 12, so that the clamping block 6 is close to the hook 3 to clamp and support the hook 3, and the moving block 11 can also ensure the contact with the clamping groove 12 because the moving block 11 is composed of the connecting cylinder 15 and the moving cylinder 17.

[0032] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this, various changes can be made within the knowledge range of the persons skilled in the art without departing from the purpose of the utility model.

Claims

1. A door opening and locking device, characterized in that, The utility model relates to a filter locking device, including The filter lower plate (1) is rotationally connected with the filter upper plate (2), and two parallel hooks (3) are connected on the filter upper plate (2); The locking assembly is connected on the filter lower plate (1); in the initial state of the locking assembly, the matching end of the locking assembly is perpendicular to the hooks (3) and is interlocked to limit the rotation of the filter upper plate (2).

2. A door opening locking device according to claim 1, characterized in that The locking assembly includes The two mounting plates (4) are symmetrically arranged and are connected on the filter lower plate (1); The support shaft (5) is rotationally connected on the two mounting plates (4), and the through hole of the support shaft (5) is formed on the mounting plate (4); The two clamping blocks (6) are parallel and are connected on the support shaft (5); The number of the limiting blocks (7) corresponds to the number of the clamping blocks (6), and the limiting blocks (7) are connected on the mounting plate (4); The number of the elastic members (8) corresponds to the number of the clamping blocks (6), and the two ends of the elastic members (8) are respectively detachably connected with the clamping blocks (6) and the limiting blocks (7); The two relaxing assemblies are symmetrically arranged and are connected on the mounting plate (4); in the use state of the relaxing assembly, the moving end of the relaxing assembly moves in the vertical direction to push the clamping blocks (6) to rotate clockwise or counterclockwise along the support shaft (5).

3. A door opening and locking device according to claim 2, wherein The relaxing assembly includes The threaded rod (9) is rotationally connected on the mounting plate (4), and the threaded rod (9) is connected with the adjusting handle (10) at one end; The moving block (11) is connected on the threaded rod (9), and the moving block (11) is matched with the clamping groove (12) formed on the clamping block (6).

4. A door opening and locking device according to claim 3, wherein The cross section of the clamping groove (12) is rectangular, the end of the clamping groove (12) close to the hook (3) is the locking position, and the end of the clamping groove (12) away from the hook (3) is the unlocking position.

5. A door opening and locking device according to claim 2, wherein The two ends of the elastic member (8) are connected with the dovetail block (13), and the dovetail block (13) is matched with the dovetail groove (14) formed on the clamping block (6) and the limiting block (7).

6. A door opening and locking device according to claim 3, wherein The moving block (11) is composed of the connecting cylinder (15), the limiting ring (16) and the moving cylinder (17), the connecting cylinder (15) is threadedly connected on the threaded rod (9), the connecting cylinder (15) is connected with the limiting ring (16) at one end, and the moving cylinder (17) is sleeved outside the connecting cylinder (15).

7. A door opening and locking device according to claim 3, wherein The anti-skid lines are formed on the adjusting handle (10).

8. A filter characterized by, The utility model relates to a filter locking device, including The filter lower plate (1) and the filter upper plate (2) are respectively connected with the water outlet pipe (18) and the water inlet pipe (19), the mounting groove (20) is formed on the filter lower plate (1), and the convex block (21) matched with the mounting groove (20) is connected on the filter upper plate (2).

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