CN115111390A

CN115111390A - Automatic regulating valve

Info

Publication number: CN115111390A
Application number: CN202210794398.5A
Authority: CN
Inventors: 李习洪; 马志祥
Original assignee: WUHAN DAYU VALVE CO Ltd
Current assignee: WUHAN DAYU VALVE CO Ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-09-27

Abstract

The invention relates to the technical field of pipeline valves, in particular to an automatic regulating valve which is arranged in a water pool and automatically controls the opening of a valve by utilizing the water level so as to control the outflow of the valve and enable the water level of the water pool to be in a stable state, and the automatic regulating valve comprises a valve core, a transmission mechanism, a float assembly and a valve body, wherein a sliding surface is arranged on the outer surface of the valve body, the valve core is connected onto the sliding surface in a sliding way, the sliding surface is sequentially divided into a first area and a second area along a first direction, and an overflowing channel is arranged on the first area; the transmission mechanism is used for converting floating or sinking of the buoy assembly into reciprocating sliding of the valve core on the sliding surface along a first direction; the valve core slides to the first area along with the upward floating of the float assembly and gradually closes the first area, and slides to the second area along with the downward sinking of the float assembly and gradually opens the overflowing channel; the opening of the valve is adjusted according to the liquid level of the water tank, so that the overflow in the water inlet pipe tends to be dynamically balanced, and water hammer and negative pressure damage to the water inlet pipe are avoided.

Description

Automatic regulating valve

Technical Field

The invention relates to the technical field of pipeline valves, in particular to an automatic regulating valve which is arranged in a water pool and automatically controls the opening of a valve by utilizing the water level so as to control the outflow of the valve and enable the water level of the water pool to be in a stable state.

Background

The traditional water tank (or water tank) mostly adopts a ball float valve to control the liquid level, but the valve core of the traditional ball float valve is usually arranged in the valve body to form a plug structure, and the ball float valve is opened when the liquid level of the water tank is lower and closed when the liquid level of the water tank is higher. The control mode is very simple, and is suitable for low-pressure and small-caliber pipelines and small water tanks, so that the control mode is not frequently used in a secondary water supply system, namely building water supply; however, due to the plug structure, it is difficult to adjust the real-time opening of the valve according to the liquid level of the pool to control the outflow, and therefore, the valve is not suitable for use in a pipeline with a larger diameter, a higher pressure or a longer length (generally considered to exceed 1Km), because the liquid level control using the open and close switching of the conventional ball float valve is very easy to cause serious water hammer and negative pressure phenomena in the frequent closing and opening processes.

Disclosure of Invention

The invention provides an automatic regulating valve, which solves the technical problem that serious water hammer and negative pressure phenomena occur in the frequent closing and opening processes when the existing float valve is suitable for pipelines with larger calibers, higher pressure or longer length (generally considered to exceed 1 Km).

The technical scheme adopted by the invention is as follows: an automatic regulating valve comprises a valve core, a transmission mechanism, a float bowl assembly and a valve body fixedly installed on a water inlet pipe, wherein a sliding surface is arranged on the outer surface of the valve body, and the valve core is connected to the sliding surface in a sliding manner and slides back and forth along a first direction; the sliding surface is sequentially divided into a first area and a second area along the first direction, and a flow passage is arranged on the first area; one end of the transmission mechanism is fixedly connected with the buoy assembly and is configured as an up-and-down moving end; the valve core is movably connected with the transmission mechanism, and the other end of the transmission mechanism is configured as a fixed end of the movable connection; the transmission mechanism is used for converting floating or sinking of the buoy assembly into reciprocating sliding of the valve core on the sliding surface along the first direction; the valve core moves towards the first area along with the upward floating of the float assembly to gradually close the first area, or moves towards the second area along with the downward sliding of the float assembly to gradually open the overflowing channel.

Furthermore, the automatic regulating valve further comprises a valve seat, the valve body and the valve core are both hollow cylindrical, the inner side surface of the valve core is in sliding fit with the outer side surface of the valve body, the valve seat is fixedly connected to one end, close to the first area, of the valve body and used for limiting sliding of the valve core, a limiting protrusion is arranged on the second area and used for limiting sliding of the valve core, one end, close to the first area, of the valve body is sealed, and a water inlet is formed in one end, close to the second area, of the valve body.

Furthermore, a circular groove is formed in one end of the valve seat, the circular groove is in interference fit with one end, close to the first area, of the valve body, an inwards-concave annular step is arranged at the edge of the circular groove, a first sealing ring is arranged in a gap between the annular step and the valve body, an annular groove is formed in the junction of the first area and the second area, a second sealing ring is arranged in the annular groove, and the first sealing ring and the second sealing ring are used for sealing the gap between the valve body and the valve core.

Furthermore, one end, close to the valve seat, of the inner side surface of the valve core extends in the axial direction of the valve core to form a protruding portion, and the protruding portion is used for being inserted into the first sealing ring.

Further, drive mechanism is slider-crank mechanism, including supporting seat, swing arm, guide block subassembly and guide rail assembly, the one end of swing arm is installed through the pivot on the supporting seat, flotation pontoon subassembly fixed connection be in the other end of swing arm, the swing arm passes through the guide block subassembly with the guide rail assembly is connected the case, the guide rail assembly with guide block subassembly swing joint, and the guide block subassembly is along second direction straight reciprocating motion, the swing arm is followed the come-up or the swing of sinking of flotation pontoon subassembly drives the guide block subassembly is along second direction reciprocating slide, and promotes the case is in along first direction reciprocating slide on the valve body.

Furthermore, the swing arm is provided with a sleeve hole, the valve core and the valve body penetrate through the sleeve hole, the guide rail assembly comprises two sliding grooves symmetrically arranged on the valve core, the guide block assembly comprises two sliding blocks symmetrically arranged on the inner side surface of the sleeve hole, and the two sliding blocks respectively slide in the two sliding grooves in a reciprocating manner along the second direction.

Further, the flow passage is a plurality of flow holes arranged at intervals along the first direction.

Further, the flotation pontoon subassembly includes flotation pontoon and balancing weight, the balancing weight with flotation pontoon fixed connection.

Furthermore, the flotation pontoon subassembly includes flotation pontoon and connecting rod, the one end of connecting rod with as move from top to bottom the end drive mechanism's one end fixed connection, the other end of connecting rod with flotation pontoon fixed connection.

Furthermore, the sewage treatment device further comprises a three-way joint, the valve body is fixedly installed on the water inlet pipe through the three-way joint, a first port of the three-way joint is communicated with the water inlet pipe, a second port of the three-way joint is communicated with the valve body, and a third port of the three-way joint is used for sewage discharge.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a schematic view of the installation of the self-regulating valve in the water tank in the present embodiment;

FIG. 2 is a schematic structural diagram of the self-regulating valve in the present embodiment;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a schematic structural view of the sliding block and the sliding slot in the present embodiment;

fig. 6 is a sectional view of the valve body, the valve element, and the valve seat in this embodiment.

Wherein, 1-valve block, 2-valve core, 3-valve base, 4-drive mechanism, 5-float assembly, 6-inlet pipe, 7-three way connection, 8-draw the dreg to cover;

101-water outlet, 102-first sealing ring, 103-second sealing ring, and 104-limiting protrusion;

201-a boss;

401-swing arm, 402-supporting seat, 403-guide block component, 404-guide rail component;

40101-trepan, 40301-pin, 40302-slider;

501-buoy, 502-counterweight and 503-connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

As shown in fig. 1 and fig. 2, the present embodiment provides an automatic regulating valve, which includes a valve body 1, a valve core 2, a transmission mechanism 4, and a float assembly 5, wherein a sliding surface is disposed on an outer surface of the valve body 1, the valve core 2 is slidably connected to the sliding surface and slides back and forth along a first direction, the sliding surface is sequentially divided into a first region and a second region along the first direction, and an overflow channel is disposed on the first region; one end of the transmission mechanism 4 is fixedly connected with the buoy assembly 5 and is configured to move up and down; the valve core 2 is movably connected with the transmission mechanism 4, and the other end of the transmission mechanism 4 is configured as a fixed end of the movable connection; the transmission mechanism 4 is used for converting the floating up or sinking down of the buoy assembly 5 into the reciprocating sliding of the valve core 2 on the sliding surface along the first direction; the valve core 2 slides to the first area along with the upward floating of the float assembly 5 and gradually closes the first area, and slides to the second area along with the downward sinking of the float assembly 5 and gradually opens the overflowing channel.

When the water level of the pool is low, the buoy assembly 5 moves downwards under the action of gravity to push the valve core 2 to move towards the second area, the overflowing channel is gradually opened, the opening degree of the valve is increased, and the outflow flow of the valve is increased; the water level of the pool begins to rise; after the water level of the pool rises, the buoy assembly 5 moves upwards under the action of buoyancy to push the valve core 2 to move towards the first area, the overflow channel is gradually closed, and the opening degree of the valve is reduced; thereby reducing the valve outflow. Finally, the water inlet flow of the water tank and the water outlet flow of the water tank keep dynamic balance, and the water level of the water tank tends to be stable. When the water tank outlet does not use water, the liquid level in the water tank reaches the highest liquid level when the valve core 2 completely seals the first area, and a logic of closed-loop control is formed among the liquid level change, the valve opening of the adjusting valve and the valve outflow (namely, the real-time opening of the valve is adjusted according to the liquid level of the water tank, so that the outflow is controlled, the liquid level of the water tank tends to be stable), and the whole pipeline tends to be in dynamic balance, so that water hammer and negative pressure damage to the water inlet pipe caused by the opening and closing process are avoided.

The flow passage can control the flow capacity range of the valve through different hole (or groove) schemes, including but not limited to:

1. the flow passage is a kidney-shaped hole extending along the first direction.

2. The flow passage is a plurality of kidney-shaped holes extending along the first direction, and the kidney-shaped holes are distributed in the first area at intervals.

3. The overflowing channel is a plurality of overflowing holes arranged at intervals along the first direction.

4. The flow passage is a plurality of water outlet holes, and the water outlet holes are arranged in the first area in a honeycomb manner.

In this embodiment, the flow passage is a plurality of water outlet holes, and the plurality of water outlet holes are arranged in a honeycomb manner in the first region.

As shown in fig. 1 and 2, the valve body 1 and the valve core 2 are both hollow cylinders, an inner side surface of the valve core 2 is in sliding fit with an outer side surface of the valve body 1, and the first direction is an axial direction of the valve body.

In this embodiment, the valve body 1 is arranged perpendicular to the horizontal plane, so the first direction is a vertical direction, one end of the valve body 1 close to the first region is closed, and one end of the valve body close to the second region is provided with a water inlet.

For convenience of understanding, in this embodiment, the following may also be recited: the vertical arrangement of valve body 1, the side surface of valve body from top to bottom divides into in proper order first region with the second is regional, the upper end of valve body 1 is sealed, the lower extreme of valve body 1 is provided with the water inlet.

As shown in fig. 1 and 2, in this embodiment, the automatic regulating valve further includes a valve seat 3, one end of the valve seat 3 (i.e., the lower end of the valve seat 3) is provided with a circular groove, the valve seat 3 is in interference fit with the closed end of the valve body (i.e., the upper end of the valve body 1) through the circular groove, the valve seat 3 and the valve body 1 are fixed by screws, and the valve body 3 is used for limiting the sliding of the valve element 2, so as to prevent the valve element 2 from opening the overflowing channel after sliding to an excessively high position due to an excessively high liquid level in the water tank; and the second area is provided with a limiting bulge 104 which is used for limiting the sliding of the valve core so as to prevent the valve core 2 from sliding to a low position due to the too low liquid level in the water tank and then impacting a connecting part of the valve body 1 and the water inlet pipe.

The end of the valve body 1 close to the first region is closed, and the closing can be realized by arranging a closing surface at the end of the valve body 1 close to the first region, or by closing the end of the valve body 1 close to the first region with the valve seat 3.

As shown in fig. 6, in this embodiment, the edge of the circular groove is provided with an inward concave annular step, a first sealing ring 102 is arranged in a gap between the annular step and the valve body 1, an annular groove is arranged at the intersection of the first area and the second area, and a second sealing ring 103 is arranged in the annular groove.

One end of the inner side surface of the valve element 2 close to the valve seat 3 (i.e. the upper end of the valve element 2) extends along the axial direction of the valve element 2 to form a convex part 201, and the convex part is used for being inserted into the first sealing ring.

As shown in fig. 1, 2, and 6, in the present embodiment, when the protrusion 201 of one end of the valve element 2 close to the valve seat 3 (i.e., the upper end of the valve element 2) is inserted into the first sealing ring 102, the horizontal height of one end of the valve element 2 away from the valve seat 3 (i.e., the lower end of the valve element 2) is lower than the height of the second sealing ring 103; when the valve core 2 slides to the highest position, the valve core 2 closes the whole first area, and the gap between the valve body 1 and the valve core 2 is sealed by the first sealing ring 102 and the second sealing ring 103;

and because the valve body 1 and the valve core 2 are both hollow cylinders, and the outer surface of the valve body 1 is in sliding fit with the inner surface of the valve core 2, the sealing sectional areas of the first sealing ring 102 and the second sealing ring 103 are equal, so that the valve core 2 is not influenced by the pressure of a pipeline when sliding to any position on the valve body 1, and the valve core 2 only needs to overcome frictional resistance when sliding.

In this embodiment, when one end of the valve element 2 (i.e., the lower end of the valve element 2) far away from the valve seat 3 contacts the limiting protrusion 104, the horizontal height of one end of the valve element 2 (i.e., the upper end of the valve element 2) close to the valve seat 3 is higher than the height of the second sealing ring 103, so that the second sealing ring 103 is still located between the valve body 1 and the valve element 2 while the valve element 2 slides to the lowest position to open the overflow channel, and the upper end of the valve element 2 collides with the second sealing ring 103 to damage the second sealing ring 103 when the valve element 2 slides upward from the lowest position.

In the invention, the transmission mechanism 4 is used for converting the floating up or sinking down of the buoy assembly 5 into the reciprocating sliding of the valve core 2 on the sliding surface along the first direction; this technical effect can be achieved by various types of transmission mechanisms, including but not limited to: the transmission mechanism 4 is a link mechanism, a rack and pinion mechanism, a cam mechanism or the like, and any of the above mechanisms can be used for converting the floating or sinking of the buoy assembly 5 into the reciprocating sliding of the valve core 2 on the sliding surface along the first direction.

As shown in fig. 2, 3 and 4, in the present embodiment, the transmission mechanism 4 is a slider-crank mechanism. The slider-crank mechanism includes swing arm 401, supporting seat 402, guide block subassembly 403 and guide rail assembly 404, the one end of swing arm 401 is installed through the pivot on the supporting seat 402, makes swing arm 401 use the pivot forms lever structure as the center, flotation pontoon subassembly 5 fixed connection be in the other end of swing arm 401, swing arm 401 passes through guide block subassembly 403 with guide rail assembly 404 is connected case 2, guide rail assembly guides guide block subassembly 403 slides along the second direction is reciprocal, swing arm 401 along with the come-up or the swing of sinking of flotation pontoon subassembly 5, drives guide block subassembly 403 slides along the second direction is reciprocal, and promotes case 2 is in slide along the first direction is reciprocal on the valve body 1.

The support seat 402 and the rotating shaft serve as fulcrums of the lever structure, the buoy assembly 5 provides power input, so that the lever structure outputs power to the valve core 2 connected with the swing arm 401 through the guide block assembly 403 and the guide rail assembly 404, and the connection position of the support seat 402, the guide block assembly or the guide rail assembly on the swing arm 401 can be adjusted according to actual requirements on an input force arm and an output force arm.

There are various ways for the valve core 2 to connect to the swing arm 401 through the guide block assembly 403 and the guide rail assembly 404, including but not limited to:

1. the guide block assembly 403 is a cylindrical guide block with one end fixedly connected to the outer peripheral surface of the valve element 2, the guide rail assembly is a waist-shaped hole formed in the side surface of the swing arm 401, the cylindrical guide block penetrates through the waist-shaped hole, the waist-shaped hole extends along the axial direction of the swing arm 401 and is used for guiding the cylindrical guide block to linearly reciprocate along the axial direction of the swing arm 401, the other end of the cylindrical guide block is movably connected with the waist-shaped hole, the swing arm 401 swings along with the floating or sinking of the buoy assembly 5 to drive the cylindrical guide block to reciprocate along a second direction (in the present arrangement mode, the second direction is the axial direction of the swing arm) in the waist-shaped hole and push the valve element 2 to reciprocate along a first direction (namely, the vertical direction) on the valve body 1, in the present arrangement mode, the movable connection between the valve core 2 and the transmission mechanism 4 is realized through the movable connection between the cylindrical guide block and the kidney-shaped hole, and the cylindrical guide block is used as the tail end of the transmission mechanism 4 and fixedly connected to the outer peripheral surface of the valve core and is used as the fixed end of the movable connection.

2. The guide block assembly 403 is a sliding block rotatably connected to the side surface of the swing arm 401, the guide rail assembly 404 is a sliding groove fixedly connected to the outer side surface of the valve element 2, the sliding groove is used for guiding the sliding block to slide along the second direction, the sliding block is slidably connected with the sliding groove, and the swing arm 401 swings along with the upward floating or downward sinking of the buoy assembly 5, so as to drive the sliding block to slide in the sliding groove in a reciprocating manner along the second direction (in the arrangement manner, the second direction is not parallel to the first direction), and push the valve element to slide in a reciprocating manner along the first direction (i.e. the vertical direction) on the valve body; the sliding connection between the valve core 2 and the transmission mechanism 4 is realized by the simple and straight movable connection between the sliding block and the sliding groove, and the sliding groove is used as the tail end of the transmission mechanism 4 and is fixedly connected to the outer peripheral surface of the valve core and is used as the fixed end of the movable connection.

In this embodiment, as shown in fig. 3 to 5, a sleeve hole 40101 is formed on the swing arm 401, the valve element 2 passes through the sleeve hole 40101, the guide rail assembly 404 includes two sliding grooves symmetrically formed on an outer surface of the valve element 2, the guide block assembly 403 includes two sliding blocks 40302 symmetrically formed on an inner side surface of the sleeve hole, the two sliding blocks 40302 are respectively rotatably connected to the inner side surface of the sleeve hole through two pins 40301, and the two sliding blocks 40302 respectively slide in the two sliding grooves in a reciprocating manner in the second direction; swing arm 401 is along with flotation pontoon subassembly 5 floats or the swing that sinks, drives two slider 40302 is two respectively along second direction (in this embodiment, the second direction is the horizontal direction) reciprocating sliding in the spout, and promotes the case is in along first direction (vertical direction) reciprocating sliding on the valve body.

Wherein, there are a plurality of setting modes for two said spouts, for example but not limited to: the two sliding grooves are two guide rails which are symmetrically arranged and fixedly connected to the outer surface of the valve core 2.

In this embodiment, the two sliding grooves are arranged in the following manner: two horizontally arranged through grooves are symmetrically milled on the peripheral surface of the valve core 2, the groove bottoms of the barrel grooves are used as the groove bottoms of the sliding grooves, side plates are respectively arranged at the upper end and the lower end of each through groove, the side plates are used for heightening the groove openings of the through grooves and lengthening the groove openings of the through grooves towards the two sides in the horizontal direction, and the through grooves and the two side plates arranged at the upper end and the lower end of each barrel groove jointly form one sliding groove.

In the process of actually applying the transmission mechanism 4 in the embodiment, when the swing arm 401 swings to the fully-closed position of the automatic regulating valve (i.e., the valve element 2 contacts the valve seat 3, or the valve element 2 completely closes the first region), and when the swing arm 401 swings to the fully-open position of the automatic regulating valve (i.e., the valve element 2 contacts the limiting protrusion 104, or the valve element 2 completely opens the flow passage), the larger the included angle between the two is, the more easily the transmission mechanism 4 is blocked; therefore, preferably, the maximum angle of the swing arm 401 swinging around the rotating shaft along with the floating pontoon assembly 5 floating up or sinking down is not more than 20 °

To smooth the float and sink motions of buoy assembly 5, the maximum buoyancy of buoy 501 should be as close as possible to 2 times the total weight of buoy assembly 5, so preferably the maximum buoyancy of buoy 501 is 2 times the weight of buoy assembly 5.

As shown in fig. 2, the buoy assembly 5 includes a buoy 501 and a weight 502, and the weight 502 is fixedly connected to the buoy 501; in this embodiment, balancing weight 502 fixed connection is in the downside of flotation pontoon 501, balancing weight 502 is used for adjusting proportion between the gravity of flotation pontoon subassembly 5 and the maximum buoyancy strengthens flotation pontoon subassembly 5 is at the come-up and the stability of sinking in-process, in practical application, if not through setting up balancing weight 502 also enables flotation pontoon subassembly 5's gravity and maximum buoyancy reach suitable proportion, also can not set up balancing weight 502.

As shown in fig. 2, the float assembly 5 further includes a connecting rod 503, one end of the connecting rod is fixedly connected to the input end of the transmission mechanism 4 (i.e. the end of the swing arm 401 not connected to the support base 402), and the other end of the connecting rod is fixedly connected to the float 501.

The connecting rod 503 is used for lengthening the input force arm of the buoy assembly 5, and in practical application, the connecting rod 503 may not be arranged, the length of the swing arm 501 is directly prolonged, the buoy 501 and the balancing weight 502 are arranged at one end of the swing arm 401 which is not connected with the supporting seat 402, the same technical effect can be obtained, but the adjustment of the input force arm of the buoy assembly 5 can be conveniently achieved through the arrangement of the connecting rod 503.

As shown in fig. 1, the automatic regulating valve further includes a three-way joint 7, the valve body is fixedly mounted on a water inlet pipe 6 through the three-way joint 7, a first port of the three-way joint 7 is communicated with the water inlet pipe 6, a second port of the three-way joint 7 is communicated with a water inlet of the valve body 1, a third port of the three-way joint 7 is used for pollution discharge, and in this embodiment, a slag drawing cover 8 is arranged on the third port;

wherein, will draw the sediment lid 8 to change for the valve to be connected to the pond outside, then can also realize right automatic regulating valve's the water discharge that does not stop.

The automatic regulating valve provided by the embodiment at least has the following technical effects or advantages:

1. the valve core 2 is pushed to move towards the second area to gradually open the overflowing channel by enabling the float assembly 5 to move downwards under the action of gravity, and the float assembly 5 moves upwards under the action of buoyancy to push the valve core 2 to move towards the first area to gradually close the overflowing channel; the water inlet flow of the water tank and the water outlet flow of the water tank are kept in dynamic balance, and the water level of the water tank tends to be stable; when the pond export is not water, the liquid level in the pond can be in case 2 seals completely reach the highest liquid level when first region, realized according to pond liquid level adjustment valve's real-time aperture, make automatically regulated valve's play flow is in steady change's state, and then makes the interior overfall of whole inlet tube tend to dynamic balance, has avoided producing violent change because of the process of opening and close of valve makes the overfall in the inlet tube, and then leads to the fact water hammer and negative pressure to destroy to the inlet tube.

2. Different from the existing float valve, the valve core is usually arranged in the valve body, and the transmission mechanism 4 does not need to extend into the valve body 1 by slidably connecting the valve core 2 to the outer surface of the valve body 1, so that the maintenance of the valve core 2 and the transmission mechanism 4 is facilitated, the sealing measure is simplified, and the maintenance and the replacement of a sealing part are facilitated; and the interior of the valve body 1 is completely hollow, so that the cleaning of sediments and dregs in the valve body 1 is facilitated.

3. By arranging the sleeve hole 40101 on the swing arm 401, the valve core 2 and the valve body 1 both penetrate through the sleeve hole 40101, the guide rail assembly comprises two sliding grooves 40104 symmetrically arranged on the outer surface of the valve core 2, the guide block assembly comprises two sliding blocks 40103 symmetrically arranged on the inner side surface of the sleeve hole, and the two sliding blocks 40103 respectively slide in the two sliding grooves in a reciprocating manner along a second direction; the whole transmission of the transmission mechanism 4 is more stable, and the blocking phenomenon is not easy to occur.

4. Through making the swing arm is followed the flotation pontoon subassembly come-up or sink and wind the wobbling maximum angle of pivot is not more than 20, further reduces drive mechanism 4 appears the possibility of card phenomenon, makes drive mechanism 4's transmission is more stable, has improved self-regulating valve's stability.

5. By making the maximum buoyancy of the float assembly be 2 times the gravity of the float assembly, the float and sink movements of the float assembly 5 are made more stable.

6. Through setting up connecting rod 503 makes one end of connecting rod 503 with the input fixed connection of drive mechanism 4, the other end of connecting rod 503 with flotation pontoon 501 fixed connection has realized right flotation pontoon subassembly 5 is to the adjustment of the input arm of force of drive mechanism 4.

7. Through setting up three way connection 7, valve body 2 passes through three way connection 7 fixed mounting is in 6 on the inlet tube, three way connection 7's first opening intercommunication inlet tube 6, three way connection 7's second opening intercommunication valve body 1, three way connection 7's third opening is used for the blowdown, has realized right automatic regulating valve with the blowdown cleaning function of inlet tube has still proposed simultaneously will draw sediment lid 8 to change for the valve to connect to the outside embodiment in pond, with this can also realize right automatic regulating valve's the row's of not stopping sewage.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

1. An automatic regulating valve is characterized in that: the valve comprises a valve core, a transmission mechanism, a buoy component and a valve body fixedly arranged on a water inlet pipe, wherein a sliding surface is arranged on the outer surface of the valve body, and the valve core is connected to the sliding surface in a sliding manner and slides back and forth along a first direction; the sliding surface is sequentially divided into a first area and a second area along the first direction, and a flow passage is arranged on the first area; one end of the transmission mechanism is fixedly connected with the buoy assembly and is configured as an up-and-down moving end; the valve core is movably connected with the transmission mechanism, and the other end of the transmission mechanism is configured as a fixed end of the movable connection; the transmission mechanism is used for converting floating or sinking of the buoy assembly into reciprocating sliding of the valve core on the sliding surface along the first direction; the valve core moves towards the first area along with the upward floating of the float assembly to gradually close the first area, or moves towards the second area along with the downward floating of the float assembly to gradually open the overflowing channel.

2. The self-regulating valve of claim 1, wherein: the valve body and the valve core are both hollow cylindrical, the inner side face of the valve core is in sliding fit with the outer side face of the valve body, the valve seat is fixedly connected to one end, close to the first area, of the valve body and used for limiting sliding of the valve core, a limiting bulge is arranged on the second area and used for limiting sliding of the valve core, one end, close to the first area, of the valve body is closed, and a water inlet is formed in one end, close to the second area, of the valve body.

3. The self-regulating valve of claim 2, wherein: the valve comprises a valve seat and is characterized in that a circular groove is formed in one end of the valve seat, the circular groove and one end, close to the first area, of the valve body are in interference fit, an inwards-concave annular step is arranged on the edge of the circular groove, a first sealing ring is arranged in a gap between the annular step and the valve body, an annular groove is formed in the junction of the first area and the second area, a second sealing ring is arranged in the annular groove, and the first sealing ring and the second sealing ring are used for sealing the gap between the valve body and the valve core.

4. The self-regulating valve of claim 3, wherein: one end, close to the valve seat, of the inner side surface of the valve core extends along the axial direction of the valve core to form a protruding portion, and the protruding portion is used for being inserted into the first sealing ring.

5. The self-regulating valve of claim 1, wherein: the transmission mechanism is a slider-crank mechanism and comprises a supporting seat, a swing arm, a guide block assembly and a guide rail assembly, wherein one end of the swing arm is installed on the supporting seat through a rotating shaft, the buoy assembly is fixedly connected to the other end of the swing arm, the swing arm passes through the guide block assembly and is connected with the guide rail assembly to form a valve core, the guide rail assembly is movably connected with the guide block assembly and guides the guide block assembly to do linear reciprocating motion along a second direction, and the swing arm drives the guide block assembly to do reciprocating sliding along the second direction along with the floating or sinking swing of the buoy assembly and pushes the valve core to do reciprocating sliding along a first direction on the valve body.

6. The self-regulating valve of claim 5, wherein: the valve comprises a valve body, a valve core, a valve body, a guide rail assembly and a guide block assembly, wherein the valve core and the valve body are arranged on the valve body, the valve core and the valve body penetrate through the valve core, the guide rail assembly comprises two sliding grooves symmetrically arranged on the valve core, the guide block assembly comprises two sliding blocks symmetrically arranged on the inner side surface of the valve core, and the two sliding blocks respectively slide in the two sliding grooves in a reciprocating mode along the second direction.

7. The self-regulating valve of claim 1, wherein: the overflowing channel is a plurality of overflowing holes arranged at intervals along the first direction.

8. The self-regulating valve of claim 1, wherein: the flotation pontoon subassembly includes flotation pontoon and balancing weight, the balancing weight with flotation pontoon fixed connection.

9. The self-regulating valve of claim 1, wherein: the flotation pontoon subassembly includes flotation pontoon and connecting rod, the one end of connecting rod with as move from top to bottom the end drive mechanism's one end fixed connection, the other end of connecting rod with flotation pontoon fixed connection.

10. The self-regulating valve of claim 1, wherein: the water inlet pipe is characterized by further comprising a three-way joint, the valve body is fixedly installed on the water inlet pipe through the three-way joint, a first port of the three-way joint is communicated with the water inlet pipe, a second port of the three-way joint is communicated with the valve body, and a third port of the three-way joint is used for sewage discharge.