CN209817075U - Float flow limiting valve based on cam transmission - Google Patents

Abstract

The utility model belongs to the technical field of the restriction valve. The utility model discloses a float flow-limiting valve based on cam transmission, which comprises a base plate with water holes at the bottom, a float arm, a float, a cam component and a flashboard, wherein the existing flow-limiting valve occupies large space, and aims at the problems in the prior art; the base plate is provided with a panel, the panel is provided with an upper limit structure and a lower limit structure, the buoy arm is hinged with the panel, the water through hole is completely closed when the buoy arm is positioned at the upper limit structure, and the water through hole is completely opened when the buoy arm is positioned at the lower limit structure; the cam component comprises a cam, a roller, a fixed block, a connecting rod and a spring, the cam is connected with the buoy through a buoy arm, the fixed block is arranged on the back face of the panel, the connecting rod vertically penetrates through the fixed block, the top end and the bottom end of the connecting rod are respectively connected with the roller and the flashboard, and the spring is sleeved on the connecting rod and is positioned between the roller and the fixed block; the cam floats up and down along with the buoy to drive the roller to drive the flashboard to move up and down so as to control the opening and closing degree of the water passing hole. The utility model discloses occupation space is little.

Description

Float flow limiting valve based on cam transmission

Technical Field

The utility model relates to a restriction valve, concretely relates to restriction valve belongs to restriction valve technical field.

Background

The drainage system is a general term for drainage channels and buildings at all levels for removing waterlogging, preventing bursting and preventing flooding, and mainly comprises a drainage adjusting net, drainage channels at all levels, a waterlogging storage lake, a drainage gate, a pumping pump station, a drainage relief area and the like. In rainy days, in order to control the discharge amount of rainwater with more dirt, rainwater pipe networks often use a flow limiting valve to limit the discharge amount of rainwater.

The traditional flow limiting valve needs to be operated by an external power device, and is high in cost and maintenance. The utility model discloses a utility model with publication number CN205688569U discloses a single-door syntropy restriction valve, its floater through fluctuation drives the rotatory purpose in order to realize the current-limiting of breakwater, and this restriction valve need not external power and manual maintenance, nevertheless because the rotary motion that will satisfy the breakwater, the restriction valve occupation space of this kind of structure often is great to the installation and the application of restriction valve have been restricted.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model provides a flotation pontoon restriction valve based on cam drive, this restriction valve simple structure, thereby it drives cam assembly operation through the flotation pontoon that floats from top to bottom and drives the flashboard up-and-down motion, can adjust the discharge through the water hole to the convection current, and occupation space is little and need not external drive power and manual maintenance.

In order to realize the technical purpose, the technical proposal of the utility model is that:

a buoy flow limiting valve based on cam transmission comprises a base plate, a panel, a buoy arm, a buoy, a cam assembly and a flashboard; the bottom of the base plate is provided with a water through hole; the panel is vertically arranged and fixed on the base plate, the panel is positioned above the water through hole, the panel is provided with an upper limit structure and a lower limit structure, the buoy arm is hinged with the panel, one end of the buoy arm is connected with the buoy, the other end of the buoy arm is connected with the cam assembly, the water through hole is completely sealed by the flashboard when the buoy arm is positioned at the upper limit structure, and the water through hole is completely opened when the buoy arm is positioned at the lower limit structure; the cam assembly comprises a cam, a roller, a fixed block, a connecting rod and a spring, the cam is connected with the buoy through a buoy arm, the cam floats up and down along with the buoy to rotate, the roller is driven by the cam to move up and down, the fixed block is fixed on the back of the panel, the connecting rod is vertically arranged, the connecting rod penetrates through the fixed block, the top end of the connecting rod is connected with the roller, the bottom end of the connecting rod is connected with the flashboard, and the spring is sleeved on the connecting rod and; the shape of the flashboard is matched with the water passing hole, and the flashboard moves up and down under the driving of the roller to control the opening and closing degree of the water passing hole. The utility model discloses simple structure, thereby it drives the cam pack operation through the flotation pontoon that fluctuates and drives the flashboard up-and-down motion, can adjust the discharge in water hole to the convection current, and no flow sudden change, occupation space is little and need not external drive power and artifical the maintenance.

Preferably, the upper limit structure is an upper limit bolt, and the lower limit structure is a lower limit bolt. The bolt is used as a limiting structure, so that the structure is simple and the cost is low.

Preferably, the top end of the substrate is provided with a hook. The installation of the flow limiting valve can be facilitated by arranging the hook.

As the preferred scheme, it has sealed rubber ring to cross water hole periphery and inlay, and sealed rubber ring is located the base plate back, the flashboard is equipped with the packing ring with sealed rubber ring matched with on the one side of crossing the water hole.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the present invention with the float arm in the lower limit configuration;

FIG. 3 is a schematic structural view of the present invention with the float arm at the upper limit structure;

reference numerals:

100. base plate 110, hook 120, panel 121, upper limit bolt 122, lower limit bolt 130, water through hole 200, float arm 300, float 410, cam 420, roller 430, fixed block 440, connecting rod 450, spring 500 and shutter

Detailed Description

With reference to fig. 1 to 3, a specific embodiment of the present invention is described in detail, but the present invention is not limited to the claims.

As shown in fig. 1-3, a cam drive based float constrictor valve includes a base plate 100, a face plate 120, a float arm 200, a float 300, a cam assembly, and a gate 500; the top end of the substrate 100 is provided with a hook 110, the bottom of the substrate 100 is provided with a water through hole 130, the periphery of the water through hole 130 is embedded with a sealing rubber ring, and the sealing rubber ring is positioned on the back surface of the substrate 100; the panel 120 is vertically arranged and fixed on the base plate 100, the panel 120 is positioned above the water through hole 130, the panel 120 is provided with an upper limit bolt 121 and a lower limit bolt 122, the buoy arm 200 is hinged with the panel 120, one end of the buoy arm 200 is connected with the buoy 300, the other end of the buoy arm is connected with the cam component, the water through hole 130 is completely sealed by the flashboard 500 when the buoy arm 200 is positioned at the upper limit structure, and the water through hole 130 is completely opened when the buoy arm 200 is positioned at the lower limit structure; the cam assembly comprises a cam 410, a roller 420, a fixed block 430, a connecting rod 440 and a spring 450, wherein the cam 410 is connected with the buoy 300 through the buoy arm 200, the cam 410 floats up and down along with the buoy 300 to rotate, the roller 420 is driven by the cam 410 to move up and down, the fixed block 430 is fixed on the back of the panel 120, the connecting rod 440 is vertically arranged, the connecting rod 440 penetrates through the fixed block 430, the top end of the connecting rod 440 is connected with the roller 420, the bottom end of the connecting rod is connected with the gate plate 500, and the spring 450 is sleeved on the connecting rod 440 and is positioned between; the shape of the gate plate 500 is adapted to the water passing hole 130, a rubber gasket matched with the sealing rubber gasket is arranged on one surface of the gate plate 500 facing the water passing hole 130, and the gate plate 500 moves up and down by the driving of the roller 420 to control the opening degree of the water passing hole 130.

The working principle is as follows:

when the rainwater level outside the flow limiting valve rises, the buoy 300 gradually rises, the buoy 300 drives the cam 410 to rotate anticlockwise through the buoy arm 200, so as to drive the roller 420 to move downwards, so that the gate plate 500 moves downwards, the opening degree of the water through hole 130 is gradually reduced, the rainwater flow passing through the water through hole 130 is gradually reduced, and when the buoy 300 rises along with the water level until the buoy arm 200 is located at the upper limit bolt 121, as shown in fig. 3, the gate plate 500 completely seals the water through hole 130; when the rainwater level outside the flow limiting valve is low, the buoy 300 gradually descends, the buoy 300 drives the cam 410 to rotate clockwise through the buoy arm 200, the roller 420 moves upwards under the reset action of the spring 450, so that the gate plate 500 moves upwards, the opening degree of the water through hole 130 is gradually increased, the rainwater flow passing through the water through hole 130 is gradually increased, and when the buoy 300 descends to the position where the buoy arm 200 is located at the lower limit bolt 122 along with the water level, as shown in fig. 2, the water through hole 130 is completely opened at the moment;

to sum up, the utility model has the advantages of it is following:

1. the utility model discloses simple structure, thereby it drives the operation of cam 410 subassembly and drives the up-and-down motion of flashboard 500 through the flotation pontoon 300 of fluctuation, can adjust the discharge through water hole 130 to the convection current, and no flow sudden change, occupation space is little and need not external drive power and artifical the maintenance.

2. The utility model discloses a set up upper limit bolt 121 and lower limit bolt 122, can go up the peak of floating and the minimum of floating down to flotation pontoon 300 and carry on spacingly to prevent that flotation pontoon arm 200 from crossing the normal operation that the influence restriction valve was crossed.

3. The utility model discloses a set up couple 110, can make things convenient for the installation of restriction valve.

4. The utility model discloses a setting mutually supported sealing rubber ring and cushion rubber ring, when buoy arm 200 was located limit structure department, can increase the leakproofness between water hole 130 and flashboard 500.

It should be understood that the above detailed description of the present invention is only for illustrative purposes and is not limited to the technical solutions described in the embodiments of the present invention. It will be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.

Claims (4)

1. A buoy flow limiting valve based on cam transmission is characterized by comprising a base plate, a panel, a buoy arm, a buoy, a cam assembly and a flashboard; the bottom of the base plate is provided with a water through hole; the panel is vertically arranged and fixed on the base plate, the panel is positioned above the water through hole, the panel is provided with an upper limit structure and a lower limit structure, the buoy arm is hinged with the panel, one end of the buoy arm is connected with the buoy, the other end of the buoy arm is connected with the cam assembly, the water through hole is completely sealed by the flashboard when the buoy arm is positioned at the upper limit structure, and the water through hole is completely opened when the buoy arm is positioned at the lower limit structure; the cam assembly comprises a cam, a roller, a fixed block, a connecting rod and a spring, the cam is connected with the buoy through a buoy arm, the cam floats up and down along with the buoy to rotate, the roller is driven by the cam to move up and down, the fixed block is fixed on the back of the panel, the connecting rod is vertically arranged, the connecting rod penetrates through the fixed block, the top end of the connecting rod is connected with the roller, the bottom end of the connecting rod is connected with the flashboard, and the spring is sleeved on the connecting rod and; the shape of the flashboard is matched with the water passing hole, and the flashboard moves up and down under the driving of the roller to control the opening and closing degree of the water passing hole.

2. The cam drive based float flow restriction valve of claim 1, wherein the upper limit structure is an upper limit bolt and the lower limit structure is a lower limit bolt.

3. The cam drive based float flow restriction valve of claim 1, wherein said base plate top end is provided with a hook.

4. The cam-drive-based buoy flow limiting valve as claimed in claim 1, wherein a sealing rubber ring is embedded at the periphery of the water through hole, the sealing rubber ring is positioned on the back surface of the base plate, and a rubber gasket matched with the sealing rubber ring is arranged on one surface of the flashboard facing the water through hole.