Slow-closing type counter weight check valve

Abstract

The utility model discloses a slow closing type heavy hammer check valve, and relates to the technical field of check valves. The check valve comprises a bottom plate, symmetrically-distributed supporting plates are movably arranged at the top end of the bottom plate, a check valve body is arranged on the tops of the two supporting plates, symmetrically-distributed fixed plates are fixedly installed at the top end of the bottom plate, and movable plates are movably clamped in the fixed plates. An empty groove is formed in the outer side of one movable plate, a rotating shaft rotationally penetrates through the top of the movable plate, the rotating shaft penetrates through the empty groove, a first clamping ring is fixedly installed at the top end of the rotating shaft, rotating rods are rotationally arranged on the opposite sides of the two fixed plates, and the ends, close to the rotating shaft, of the rotating rods are fixedly sleeved with first bevel gears. The check valve body can be supported, physical labor of workers is reduced, meanwhile, the angle of the check valve body can be finely adjusted, alignment of the check valve body and a connecting pipeline is facilitated, and the mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a slow-closing heavy hammer check valve. Background Art

[0002] The weight check valve is a commonly used automatic valve, mainly used to prevent the medium from flowing back and ensure the normal operation of the pipeline system. Its working principle is to use the weight and the spring on the valve cover to realize the function of automatically opening and closing the valve. Specifically, the weight check valve consists of a valve body, a valve cover, a valve disc and a weight. When the fluid flows in from one end, the spring on the valve cover presses the valve disc tightly against the valve seat, so that the medium can only flow from one direction, thereby avoiding backflow. When the fluid is subjected to reverse pressure, the weight will move, so that its concave and convex openings are closed, thereby realizing the check effect of the reverse fluid:

[0003] The check valve in the prior art requires multiple persons to support it during installation, and it is difficult for the check valve to maintain the same horizontal line with the connecting pipe, making the installation more troublesome. Utility Model Content

[0004] In order to solve the problem that the check valve is difficult to maintain the same horizontal line with the connection; the purpose of the utility model is to provide a slow-closing heavy hammer check valve.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a slow-closing heavy hammer check valve, comprising a bottom plate, the top of the bottom plate is movably provided with a symmetrically distributed support plate, the tops of the two support plates are jointly provided with a check valve body, the top of the bottom plate is fixedly installed with a symmetrically distributed fixed plate, the internal movable clamp of the fixed plate is provided with a movable plate, the outer side of one of the movable plates is provided with an empty groove, the top of the movable plate is rotatably penetrated by a rotating shaft, the rotating shaft penetrates the empty groove, the top of the rotating shaft is fixedly installed with a first clamping ring, the opposite sides of the two fixed plates are rotatably provided with a rotating rod, the rotating rod is fixedly sleeved with a first bevel gear at one end close to the rotating shaft, the outer sides of the first bevel gear are meshed and connected with a second bevel gear, the second bevel gear is fixedly sleeved in the rotating shaft, the top of the other movable plate is fixedly installed with a connecting plate, the top of the connecting plate is provided with an arc groove, the inner movable clamp of the arc groove is provided with a movable plate, and the top of the movable plate is fixedly installed with a second clamping ring.

[0006] Preferably, a clamping block is fixedly installed at the bottom end of the support plate, a clamping slot is opened at the top end of the bottom plate, the clamping block is movably clamped in the clamping slot, a double-headed screw with opposite threads at both ends rotates through the clamping slot, and the double-headed screw thread passes through the clamping block.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] 1. This application can support the check valve body, reduce the physical labor of the staff, and at the same time can fine-tune the angle of the check valve body, facilitate the alignment of the check valve body and the connecting pipe, and improve the installation efficiency;

[0009] 2. The present application can adjust the distance between the two support plates so that the two support plates can support check valve bodies of different lengths, thereby increasing the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is a structural schematic diagram of the support plate in the utility model.

[0013] Figure 3 It is a schematic structural diagram of the first clamping ring and the second clamping ring in the utility model.

[0014] In the figure: 1. bottom plate; 11. support plate; 12. check valve body; 13. fixed plate; 14. movable plate; 15. empty groove; 16. rotating shaft; 17. first retaining ring; 18. rotating rod; 19. first bevel gear; 191. second bevel gear; 192. connecting plate; 193. arc groove; 194. movable plate; 195. second retaining ring; 2. clamping block; 21. clamping groove; 22. double-headed screw; 3. stabilizing plate; 31. electric push rod; 32. horizontal plate; 4. worm; 41. worm wheel; 5. stabilizing block; 6. protective cover; 7. support rod; 71. anti-slip pad; 8. mounting plate. DETAILED DESCRIPTION

[0015] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.

[0016] Example: Figure 1-3As shown, the utility model provides a slow-closing heavy hammer check valve, comprising a bottom plate 1, a symmetrically distributed support plate 11 is movably provided at the top of the bottom plate 1, a check valve body 12 is commonly provided at the top of the two support plates 11, a symmetrically distributed fixed plate 13 is fixedly installed at the top of the bottom plate 1, a movable plate 14 is movably provided inside the fixed plate 13, an empty groove 15 is provided on the outer side of one of the movable plates 14, a rotating shaft 16 is rotatably penetrated at the top of the movable plate 14, the rotating shaft 16 penetrates the empty groove 15, and a first clamp ring 1 is fixedly installed at the top of the rotating shaft 16 7. A rotating rod 18 is rotatably provided on the opposite side of the two fixed plates 13. A first bevel gear 19 is fixedly sleeved on one end of the rotating rod 18 close to the rotating shaft 16. The outer sides of the first bevel gear 19 are meshedly connected with a second bevel gear 191. The second bevel gear 191 is fixedly sleeved in the rotating shaft 16. A connecting plate 192 is fixedly installed on the top of the other movable plate 14. An arc groove 193 is opened on the top of the connecting plate 192. A movable plate 194 is movably clamped inside the arc groove 193. A second clamping ring 195 is fixedly installed on the top of the movable plate 194.

[0017] A clamping block 2 is fixedly installed at the bottom end of the support plate 11, and a clamping slot 21 is opened at the top of the bottom plate 1. The clamping block 2 is movably clamped in the clamping slot 21. A double-headed screw 22 with opposite threads at both ends rotates through the clamping slot 21, and the double-headed screw 22 threads penetrate the clamping block 2.

[0018] A stabilizing plate 3 is fixedly installed on opposite sides of the two fixed plates 13, and symmetrically distributed electric push rods 31 are fixedly installed on the top of the stabilizing plate 3. A cross plate 32 is fixedly installed on the output ends of the two electric push rods 31. The cross plate 32 and the two movable plates 14 are fixedly connected. By driving the electric push rods 31, the output ends of the electric push rods 31 drive the cross plate 32 to rise, and the cross plate 32 drives the first retaining ring 17 to rise through the movable plate 14, so that the height of the check valve body 12 can be adjusted to adapt to pipelines of different heights.

[0019] A worm 4 is rotatably provided above the transverse plate 32, and a worm wheel 41 is meshedly connected to the bottom of the worm 4. The worm wheel 41 is fixedly sleeved on the outside of the rotating rod 18. The worm wheel 41 is driven to rotate by the worm 4, so that the worm wheel 41 drives the rotating rod 18 to rotate. At the same time, the worm 4 and the worm wheel 41 can self-lock the rotating rod 18 to prevent it from rotating.

[0020] The top of the transverse plate 32 is fixedly mounted with symmetrically distributed stabilizing blocks 5, and the rotating rod 18 rotates through the stabilizing blocks 5. By providing the stabilizing blocks 5, the rotating rod 18 can be supported so that it can rotate smoothly.

[0021] A protective sleeve 6 is fixedly provided at one end of the worm 4 away from the worm wheel 41 . The protective sleeve 6 is made of silicone. The protective sleeve 6 is provided to facilitate the staff to rotate the worm 4 .

[0022] Support rods 7 are fixedly installed at the four corners of the bottom end of the base plate 1, and anti-skid pads 71 ​​are fixedly installed at the bottom ends of the support rods 7. By providing the support rods 7 and the anti-skid pads 71, the stability of the base plate 1 is improved, thereby better supporting the check valve body 12.

[0023] A mounting plate 8 is fixedly mounted on the top of the transverse plate 32 , and the worm 4 rotates and penetrates the mounting plate 8 . By providing the mounting plate 8 , the worm 4 can be supported and its stability can be improved.

[0024] Working principle: In actual use, the check valve body 12 is placed between the two support plates 11 and moved to the middle of the two pipes that need to be connected. When the angle needs to be adjusted, the electric push rod 31 is driven so that its output end drives the cross plate 32 to rise, and the cross plate 32 drives the two movable plates 14 to rise, so that the two movable plates 14 drive the check valve body 12 to rise and separate from the support plate 11 through the first clamp ring 17 and the second clamp ring 195, and the first bevel gear 19 is driven to rotate by the rotating rod 18, and the first bevel gear 19 drives the second bevel gear 191 to rotate. At this time, the second bevel gear 19 is driven to rotate. The wheel 191 drives the rotating shaft 16 to rotate, and the rotating shaft 16 drives the check valve body 12 to rotate through the first clamping ring 17 until the check valve body 12 and the connecting pipe maintain the same horizontal line; at the same time, the second clamping ring 195 follows the rotation of the check valve body 12 to drive the movable plate 194 to move in the arc groove 193, thereby improving the stability of the check valve body 12 during rotation; by driving the double-headed screw 22 to rotate, the two blocks 2 threadedly mounted on the outside of the double-headed screw 22 are driven to move, and the two blocks 2 drive the support plates 11 fixedly connected to each other to move, thereby adjusting the distance between the two support plates 11.

[0025] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A slow-closing weight check valve, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is movably provided with symmetrically distributed support plates (11), and the tops of the two support plates (11) are jointly provided with a check valve body (12). The top of the bottom plate (1) is fixedly provided with symmetrically distributed fixed plates (13), and a movable plate (14) is movably provided inside the fixed plate (13), and a hollow groove (15) is provided on the outer side of one of the movable plates (14). A rotating shaft (16) is rotatably passed through the top of the movable plate (14), and the rotating shaft (16) passes through the hollow groove (15). A first clamping ring (17) is fixedly provided on the top of the rotating shaft (16), and the two fixed plates (13) are mutually connected. A rotating rod (18) is provided for rotation on the opposite side. A first bevel gear (19) is fixedly sleeved on one end of the rotating rod (18) close to the rotating shaft (16). A second bevel gear (191) is meshedly connected to the outer side of the first bevel gear (19). The second bevel gear (191) is fixedly sleeved in the rotating shaft (16). A connecting plate (192) is fixedly installed on the top end of the other movable plate (14). An arc groove (193) is provided on the top end of the connecting plate (192). A movable plate (194) is movably clamped inside the arc groove (193). A second clamping ring (195) is fixedly installed on the top end of the movable plate (194).

2. A slow closing weight check valve as claimed in claim 1, characterized in that: A clamping block (2) is fixedly mounted on the bottom end of the support plate (11), a clamping slot (21) is provided on the top end of the bottom plate (1), the clamping block (2) is movably clamped in the clamping slot (21), a double-headed screw (22) with opposite threads at both ends rotatably penetrates the clamping slot (21), and the double-headed screw (22) is threadedly penetrates the clamping block (2).

3. A slow closing weight check valve as claimed in claim 1, characterized in that: A stabilizing plate (3) is fixedly mounted on opposite sides of the two fixed plates (13), symmetrically distributed electric push rods (31) are fixedly mounted on the top of the stabilizing plate (3), a transverse plate (32) is fixedly mounted on the output ends of the two electric push rods (31), and the transverse plate (32) is fixedly connected to the two movable plates (14).

4. A slow closing weight check valve as claimed in claim 3, characterized in that: A worm (4) is rotatably arranged above the transverse plate (32), a worm wheel (41) is meshingly connected to the bottom of the worm (4), and the worm wheel (41) is fixedly sleeved on the outer side of the rotating rod (18).

5. A slow closing weight check valve as claimed in claim 4, characterized in that: A symmetrically distributed stabilizing block (5) is fixedly mounted on the top of the transverse plate (32), and the rotating rod (18) rotates through the stabilizing block (5).

6. A slow closing weight check valve as claimed in claim 4, characterized in that: A protective sleeve (6) is fixedly provided on one end of the worm (4) away from the worm wheel (41), and the protective sleeve (6) is made of silicone.

7. A slow closing weight check valve as claimed in claim 2, characterized in that: Support rods (7) are fixedly mounted at the four corners of the bottom end of the base plate (1), and anti-slip pads (71) are fixedly mounted at the bottom ends of the support rods (7).

8. A slow closing weight check valve as claimed in claim 4, characterized in that: A mounting plate (8) is fixedly mounted on the top end of the transverse plate (32), and the worm (4) rotates and penetrates the mounting plate (8).

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