Pressure valve mechanism capable of preventing backflow

Abstract

The utility model provides an anti-backflow pressure valve mechanism which relates to the technical field of valves and comprises a shell, a sliding groove is formed in the upper surface of the shell, a splitter plate is fixed in the shell, a supporting plate is fixed on one side face of the splitter plate, and first baffles are rotationally connected to the two side faces of the supporting plate. And a limiting mechanism for driving the two first baffles to rotate is arranged on the upper surface of the shell, the limiting mechanism comprises a rotating rod slidably connected into the sliding groove, and the top end of the rotating rod penetrates through the shell and is rotationally connected with two supporting rods. According to the anti-backflow pressure valve mechanism, a rotating rod is driven by external force to horizontally move in a sliding groove, a first baffle is driven to rotate through cooperation of the rotating rod, a connecting rod and a connecting block, the first baffle and a splitter plate are parallel to seal the interior of a shell, and then the position of the rotating rod is supported through cooperation of a push rod and a supporting rod; the backflow phenomenon of the valve is avoided.

Description

Technical Field

[0001] The utility model relates to an anti-backflow valve, in particular to an anti-backflow pressure valve mechanism, belonging to the technical field of valves. Background Art

[0002] A valve is a component used to control the flow direction of pipelines and media. It is a very common and necessary small accessory in both liquid and gas pipelines. An anti-backflow valve is one of many pipeline valves. It is widely used to control the one-way flow of liquid media in pipelines.

[0003] A valve device is disclosed in the Chinese patent application publication CN214197389U. Compared with the prior art, the device has improved sealing effect and reduced medium loss.

[0004] Although the above solution can improve the sealing effect and reduce the loss of the medium, the valve device in the above patent is not convenient for preventing water from flowing back to the inside of the valve. When the flow stops, the water in the pipeline will flow back. For this reason, we provide a pressure valve mechanism that prevents backflow to solve the above problem. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a backflow prevention pressure valve mechanism to solve the problem that the valve device in the prior art is not convenient for preventing water from flowing back to the inside of the valve.

[0007] (II) Technical solution

[0008] The utility model is implemented through the following technical scheme: a backflow prevention pressure valve mechanism, including a shell, the upper surface of the shell is provided with a slide groove, a diverter plate is fixed inside the shell, a support plate is fixed to one side of the diverter plate, both sides of the support plate are rotatably connected to the first baffle plate, and the upper surface of the shell is provided with a limiting mechanism for driving the two first baffle plates to rotate.

[0009] Furthermore, the limiting mechanism includes a rotating rod slidably connected to the inside of the slide groove, the top end of the rotating rod passes through the outer shell and is rotatably connected to two support rods, the ends of the two support rods away from the rotating rod are rotatably connected to push rods, the outer surfaces of the two push rods are slidably connected to limiting frames, compression springs are fixed between the inside of the two limiting frames and the push rods, and the bottom surfaces of the two limiting frames are fixed to the upper surface of the outer shell.

[0010] Furthermore, the limiting mechanism also includes two connecting rods rotatably connected to the bottom end of the rotating rod, and the ends of the two connecting rods away from the rotating rod are rotatably connected to connecting blocks, and one side of the two connecting blocks is respectively fixed to one side of the two first baffles.

[0011] Furthermore, a partition is fixedly sleeved on the middle section of the rotating rod, and the outer surface of the partition is slidably connected to the inside of the sliding groove.

[0012] A water inlet pipe is fixed on the right side of the shell, a water outlet pipe is fixed on the side of the shell away from the water inlet pipe, and a lifting mechanism for sealing the valve is arranged on the side of the shell close to the water inlet pipe.

[0013] Furthermore, the lifting mechanism includes a motor fixed on the upper surface of the outer shell, a transmission shaft is fixed to the output end of the motor, a driving wheel is fixedly sleeved on the outer surface of the transmission shaft, the bottom surface of the driving wheel is rotatably connected to the upper surface of the outer shell, the outer surface of the driving wheel is meshed with a driven wheel, the bottom surface of the driven wheel is rotatably connected to the upper surface of the outer shell, and a threaded rod is fixedly passed through the interior of the driven wheel.

[0014] Furthermore, the lifting mechanism also includes a second baffle plate slidably connected to the inner wall of the outer shell, the bottom end of the threaded rod passes through the upper surface of the outer shell and is threadedly connected to the inside of the second baffle plate, and the outer surface of the second baffle plate is slidably connected to two limit plates, and one side of the two limit plates is fixed to the inner wall of the outer shell.

[0015] The utility model provides a pressure valve mechanism for preventing backflow, which has the following beneficial effects:

[0016] 1. The pressure valve mechanism for preventing backflow drives the rotating rod to move horizontally inside the slide groove through external force, and drives the first baffle to rotate through the cooperation between the rotating rod, the connecting rod and the connecting block, so that the first baffle and the diverter plate are parallel to close the inside of the shell, and then the position of the rotating rod is supported by the cooperation between the push rod and the support rod to avoid backflow of the valve.

[0017] 2. The pressure valve mechanism for preventing backflow drives the driving wheel to rotate through the motor, and drives the second baffle to slide through the cooperation between the driving wheel, the driven wheel and the threaded rod, so as to close the inner wall of the water inlet pipe, thereby further improving the sealing effect of the valve and improving the safety of valve use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural cross-sectional view of the housing in the utility model;

[0019] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the limiting mechanism in the utility model;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the lifting mechanism in the utility model.

[0022] Description of Reference Numerals

[0023] 1. Shell; 2. Water inlet pipe; 3. Water outlet pipe; 4. Chute;

[0024] 5. Limiting mechanism; 51. Limiting frame; 52. Push rod; 53. Compression spring; 54. Support rod; 55. Rotating rod; 56. Connecting rod; 57. Connecting block;

[0025] 6. partition; 7. splitter plate; 8. first baffle;

[0026] 9. lifting mechanism; 91. motor; 92. transmission shaft; 93. driving wheel; 94. driven wheel; 95. threaded rod; 96. second baffle; 97. limit plate;

[0027] 10. Support plate. DETAILED DESCRIPTION

[0028] Please refer to Figure 1 and Figure 2 The embodiment of the utility model provides a pressure valve mechanism for preventing backflow, including a shell 1, a slide groove 4 is opened on the upper surface of the shell 1, a diverter plate 7 is fixed inside the shell 1, a support plate 10 is fixed on one side of the diverter plate 7, and both sides of the support plate 10 are rotatably connected with a first baffle 8, and a limiting mechanism 5 is provided on the upper surface of the shell 1 for driving the two first baffles 8 to rotate, so that the first baffle 8 is parallel to the diverter plate 7 to close the inside of the shell 1 to avoid backflow inside the valve.

[0029] Please refer to Figure 3 The limiting mechanism 5 includes a rotating rod 55 slidably connected to the inside of the slide groove 4. The top end of the rotating rod 55 passes through the shell 1 and is rotatably connected to two support rods 54. The ends of the two support rods 54 away from the rotating rod 55 are rotatably connected to push rods 52. The position of the rotating rod 55 is supported by the cooperation between the push rods 52 and the support rods 54. The outer surfaces of the two push rods 52 are slidably connected to the limiting frames 51. Compression springs 53 are fixed between the inside of the two limiting frames 51 and the push rods 52. The compression springs 53 provide elastic support to the push rods 52. The bottom surfaces of the two limiting frames 51 are fixed to the upper surface of the shell 1.

[0030] The limiting mechanism 5 also includes two connecting rods 56 rotatably connected to the bottom end of the rotating rod 55. The ends of the two connecting rods 56 away from the rotating rod 55 are rotatably connected to connecting blocks 57. One side of the two connecting blocks 57 is respectively fixed to one side of the two first baffles 8. The first baffle 8 is driven to rotate through the cooperation between the rotating rod 55, the connecting rod 56 and the connecting block 57.

[0031] A partition plate 6 is fixedly sleeved on the middle section of the rotating rod 55 , and the outer surface of the partition plate 6 is slidably connected to the inside of the slide groove 4 , so that the partition plate 6 improves the sealing performance of the inside of the slide groove 4 when the rotating rod 55 moves.

[0032] In the above scheme, the rotating rod 55 is driven by external force to move horizontally inside the slide groove 4, and the first baffle 8 is driven to rotate through the cooperation between the rotating rod 55, the connecting rod 56 and the connecting block 57, so that the first baffle 8 and the diverter plate 7 are parallel to close the inside of the shell 1, and then the position of the rotating rod 55 is supported by the cooperation between the push rod 52 and the support rod 54 to avoid backflow of the valve.

[0033] Please refer to Figure 1 and Figure 2 A water inlet pipe 2 is fixed to the right side of the shell 1, a water outlet pipe 3 is fixed to the side of the shell 1 away from the water inlet pipe 2, and a lifting mechanism 9 for sealing the valve is provided on the side of the shell 1 close to the water inlet pipe 2.

[0034] Please refer to Figure 4 The lifting mechanism 9 includes a motor 91 fixed on the upper surface of the shell 1, a transmission shaft 92 is fixed to the output end of the motor 91, a driving wheel 93 is fixedly sleeved on the outer surface of the transmission shaft 92, the bottom surface of the driving wheel 93 is rotatably connected to the upper surface of the shell 1, a driven wheel 94 is meshed on the outer surface of the driving wheel 93, the bottom surface of the driven wheel 94 is rotatably connected to the upper surface of the shell 1, and a threaded rod 95 is fixedly passed through the interior of the driven wheel 94.

[0035] The lifting mechanism 9 also includes a second baffle plate 96 slidably connected to the inner wall of the outer shell 1. The bottom end of the threaded rod 95 passes through the upper surface of the outer shell 1 and is threadedly connected to the inside of the second baffle plate 96. The outer surface of the second baffle plate 96 is slidably connected to two limit plates 97. One side of the two limit plates 97 is fixed to the inner wall of the outer shell 1. The second baffle plate 96 is driven to slide inside the limit plate 97 through the cooperation between the driving wheel 93, the driven wheel 94 and the threaded rod 95.

[0036] In the above scheme, the motor 91 drives the driving wheel 93 to rotate, and the cooperation between the driving wheel 93, the driven wheel 94 and the threaded rod 95 drives the second baffle 96 to slide, thereby closing the inner wall of the water inlet pipe 2, further improving the valve sealing effect and improving the safety of valve use.

[0037] When the utility model is in use: when the anti-backflow device inside the valve is used, an external force is used to drive the rotating rod 55 to move horizontally inside the slide groove 4, and the first baffle plate 8 is driven to rotate through the cooperation between the rotating rod 55, the connecting rod 56 and the connecting block 57, so that the first baffle plate 8 and the diverter plate 7 are parallel to the inside of the shell 1 to close the backflow inside the valve, and then the compression spring 53 is used to provide elastic support to the push rod 52, and the position of the rotating rod 55 is supported by the cooperation between the push rod 52 and the supporting rod 54, so as to improve the position stability of the first baffle plate 8 when closing the shell 1, and improve the sealing performance of the inside of the slide groove 4 when the rotating rod 55 moves through the partition 6, so as to avoid the backflow phenomenon of the valve; then the motor 91 is started to drive the driving wheel 93 to rotate, and the cooperation between the driving wheel 93, the driven wheel 94 and the threaded rod 95 drives the second baffle plate 96 to slide inside the limit plate 97, so as to close the inner wall of the water inlet pipe 2, so as to improve the sealing effect of the valve again and improve the safety of the valve.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pressure valve mechanism for preventing backflow, comprising a housing (1), characterized in that: The upper surface of the shell (1) is provided with a slide groove (4), a diverter plate (7) is fixed inside the shell (1), a support plate (10) is fixed to one side of the diverter plate (7), both sides of the support plate (10) are rotatably connected to first baffle plates (8), and the upper surface of the shell (1) is provided with a limiting mechanism (5) for driving the two first baffle plates (8) to rotate; A water inlet pipe (2) is fixed to the right side of the housing (1), a water outlet pipe (3) is fixed to the side of the housing (1) away from the water inlet pipe (2), and a lifting mechanism (9) for sealing the valve is provided on the side of the housing (1) close to the water inlet pipe (2).

2. The pressure valve mechanism for preventing backflow according to claim 1, characterized in that: The limiting mechanism (5) comprises a rotating rod (55) slidably connected to the inside of the slide groove (4); the top end of the rotating rod (55) passes through the housing (1) and is rotatably connected to two support rods (54); the ends of the two support rods (54) away from the rotating rod (55) are rotatably connected to push rods (52); the outer surfaces of the two push rods (52) are slidably connected to the limiting frames (51); compression springs (53) are fixed between the inside of the two limiting frames (51) and the push rods (52); and the bottom surfaces of the two limiting frames (51) are fixed to the upper surface of the housing (1).

3. The pressure valve mechanism for preventing backflow according to claim 2, characterized in that: The limiting mechanism (5) further comprises two connecting rods (56) rotatably connected to the bottom end of the rotating rod (55), one end of the two connecting rods (56) away from the rotating rod (55) being rotatably connected to a connecting block (57), and one side surface of the two connecting blocks (57) being respectively fixed to one side surface of the two first baffles (8).

4. The pressure valve mechanism for preventing backflow according to claim 3, characterized in that: A partition plate (6) is fixedly sleeved on the middle section of the rotating rod (55), and the outer surface of the partition plate (6) is slidably connected to the inside of the sliding groove (4).

5. The pressure valve mechanism for preventing backflow according to claim 1, characterized in that: The lifting mechanism (9) comprises a motor (91) fixed to the upper surface of the housing (1); a transmission shaft (92) is fixed to the output end of the motor (91); a driving wheel (93) is fixedly sleeved on the outer surface of the transmission shaft (92); the bottom surface of the driving wheel (93) is rotatably connected to the upper surface of the housing (1); a driven wheel (94) is meshed on the outer surface of the driving wheel (93); the bottom surface of the driven wheel (94) is rotatably connected to the upper surface of the housing (1); and a threaded rod (95) is fixedly passed through the interior of the driven wheel (94).

6. The pressure valve mechanism for preventing backflow according to claim 5, characterized in that: The lifting mechanism (9) further comprises a second baffle (96) slidably connected to the inner wall of the outer shell (1); the bottom end of the threaded rod (95) penetrates the upper surface of the outer shell (1) and is threadedly connected to the inside of the second baffle (96); the outer surface of the second baffle (96) is slidably connected to two limit plates (97); one side surface of the two limit plates (97) is fixed to the inner wall of the outer shell (1).

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