CN210797847U - Hydraulic flow control device - Google Patents

Abstract

The utility model relates to a hydraulic flow control device, including mounting panel, manger plate door, first connecting rod, second connecting rod and buoyant device, be provided with water hole and two slide rails on the mounting panel, manger plate door sets up between two slide rails to constitute the sliding pair with the slide rail, the one end of first connecting rod articulates in manger plate door, and the other end articulates in the one end of second connecting rod, and the other end of second connecting rod links to each other with buoyant device, the second connecting rod is fixed in the mounting panel, and constitutes the revolute pair with the mounting panel, the water hole of crossing is located in the slide rail or is located the one end of slide rail, manger plate door is used for controlling under buoyant device's drive the aperture of crossing the water hole; this device, compact structure, volume are less, can effectively avoid the transition wearing and tearing that prior art exists, the packing force that the flashboard bore is uneven, sealed effect subalternation problem, and the practicality is stronger.

Description

Hydraulic flow control device

Technical Field

The utility model relates to a plumbing technical field, concretely relates to water flow control device.

Background

In drainage engineering, rainwater, sewage and other drainage bodies are drained into a treatment unit (such as a sewage treatment plant) or a natural water body through pipelines such as an underground pipe network, and due to the influence of factors such as rainfall, resident life laws and the like, the water quantity of the rainwater, the sewage and the like to be drained changes constantly and fluctuates greatly sometimes, such as during rainstorm. The fluctuation of the water quantity can cause great influence on a drainage pipe network, such as overlarge pipeline pressure and the like; a large amount of rainwater and sewage are discharged into the treatment unit at the same time, so that large load impact is caused on the treatment system.

For avoiding above-mentioned problem, in current drainage pipe network, be provided with flow control device usually, under the water yield condition of difference, through flow control device's regulation for the water flow who discharges into the pipe network keeps invariable, thereby can avoid causing impact or influence to drainage pipe network, processing system etc..

In the prior art, an electric flow regulating device is a commonly used flow control device, but the electric flow regulating device generally has the defects of difficult installation and maintenance, incapability of realizing unattended operation, higher requirement on working environments of a sensor and equipment and the like; the prior art discloses a floating control shutoff valve (see China patent CN 106759837A for details), which comprises a buoy, a main board, a side board, a flashboard, a water outlet and the like, wherein the main board is arranged on a wall body, the water outlet arranged on the main board corresponds to a drainage channel, the side board is vertically fixed on the main board, two pressing blocks are arranged on the main board, the flashboard is arranged between the two pressing blocks and can move up and down along the pressing blocks for sealing the water outlet, the flashboard is connected with the buoy through a connecting rod mechanism, and the connecting rod mechanism is fixed on the side board as shown in figure 1; however, the floating shutoff valve has some disadvantages, such as 1, as shown in fig. 1, a non-compact structure, a large volume, and a high requirement for a space of an installation position, especially, the arrangement of the side plates makes the size of the floating shutoff valve in each direction (including a vertical size, a transverse size, and a longitudinal size) large, which seriously affects the practicability of the floating shutoff valve; 2. according to the structure of the float-controlled shutoff valve, when the buoy moves upwards or downwards and the flashboard is driven to move downwards or upwards, the first connecting rod in the connecting rod mechanism can generate a pressure component perpendicular to the main board on the flashboard, so that the friction force between the flashboard and the main board is greatly increased, the flashboard or a wear-resisting plate arranged on the flashboard is easy to wear, the service life is short, and the wear condition is the most serious especially when the buoy is used for processing a lower position; 3. in the process that the buoy moves upwards or downwards, the pressing force of the first connecting rod in the connecting rod mechanism on the flashboard changes constantly, the problem of poor sealing is easy to occur, and particularly when the buoy is located at a high position, the sealing effect of the abraded flashboard or abrasion-resistant plate on a water outlet is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of the prior art that the float-controlled shutoff valve has an incompact structure, a larger volume, easy abrasion, uneven pressing force born by the flashboard and the like, and provides a hydraulic flow control device which comprises a mounting plate, a water blocking door, a first connecting rod, a second connecting rod and a buoyancy device, the mounting plate is provided with a water through hole and two slide rails, the water blocking door is arranged between the two slide rails, and forms a sliding pair with the sliding rail, one end of the first connecting rod is hinged with the water stop door, the other end is hinged with one end of the second connecting rod, the other end of the second connecting rod is connected with the buoyancy device, the second connecting rod is fixed on the mounting plate, and the water blocking door and the mounting plate form a revolute pair, the water passing hole is positioned in the slide rail or at one end of the slide rail, and the water blocking door is used for controlling the opening degree of the water passing hole under the driving of the buoyancy device. The second connecting rod is directly fixed on the mounting plate, so that the planes of the first connecting rod, the second connecting rod, the water retaining door and the water passing hole are parallel to each other, the acting force of the first connecting rod on the water retaining door is acted in the plane parallel to the water retaining door (or called as the plane parallel to the mounting plate) in the up-and-down moving process of the water retaining door, and no stress component exists in the direction vertical to the water retaining door, on one hand, the pressing force of the water retaining door on the mounting plate can be kept uniform (namely unchanged) in the up-and-down moving process of the water retaining door, the smooth and stable up-and-down moving of the water retaining door is facilitated, and the better sealing effect between the water retaining door and the mounting plate is facilitated; on the other hand, the pressure of the water retaining door acting on the mounting plate is moderate and uniformly distributed, and the water retaining door is not influenced by the first connecting rod, so that the water retaining door is small in abrasion between the water retaining door and the mounting plate in the process of moving up and down relative to the mounting plate, and the abrasion is slow (normal abrasion speed), so that the service life is prolonged; in addition, in this scheme, the structure of device is compacter, and whole volume is less, especially reduces greatly at the longitudinal dimension, is favorable to reducing the demand to the mounted position space size, and the practicality is stronger.

In order to further enhance the sealing effect, in a preferred scheme, the sealing device further comprises a sealing gasket, and the sealing gasket is fixed on the mounting plate and surrounds the water through holes. In the moving process of the water retaining door, the sealing gasket is just right positioned between the water retaining door and the mounting plate, and particularly, better sealing can be realized under the condition that the water passing hole is completely sealed by the water retaining door, so that water leakage is prevented.

Preferably, the mounting plate is provided with a plurality of mounting holes. The mounting plate is a mounting bearing body of each part, and the mounting holes are arranged, so that the mounting plate can be conveniently mounted at a specified position of the drainage system through expansion bolts and the like.

In order to calculate the real-time water passing area of the water passing hole more accurately when the water baffle is located at different positions, in a preferred scheme, the water passing hole should be more regular, for example, the water passing hole may preferably adopt a round hole or a square hole.

When the liquid level height of the installation position of the device is gradually increased, the position of the buoyancy device is continuously increased under the action of buoyancy, the position of the water blocking door is gradually reduced under the driving of the buoyancy device, at the moment, the water passing hole is gradually blocked by the water blocking door, and when the liquid level reaches the set height, the water passing hole is completely blocked by the water blocking door; the lower baffle is arranged below the water passing hole, and the water retaining door is just in contact with the lower baffle when moving to the lowest position, so that the water retaining door is effectively limited to continue moving downwards by the lower baffle.

In a preferable scheme, the lower edge of the water retaining door is of an arc-shaped structure.

Preferably, the shape of the lower baffle is matched with the shape of the lower edge of the water retaining door. So that the water retaining door and the lower baffle can be better matched together.

In a preferred scheme, the lower baffle comprises a baffle with an arc structure and a plurality of reinforcing plates connected with the baffle, and the reinforcing plates are respectively perpendicular to the baffle. The lower baffle plate is simple in structure, convenient to machine and manufacture, low in cost and high in rigidity in the using process.

In a preferred embodiment, the buoyancy means is a hollow body. So that the buoyancy means can float on the water surface under the influence of buoyancy.

Preferably, the buoyancy device is a cylindrical structure or a spherical structure or a rectangular parallelepiped structure.

Furthermore, the device also comprises a central shaft which is vertically fixed on the mounting plate, and a second connecting rod which is fixed on the central shaft and forms a revolute pair with the central shaft.

In a preferred embodiment, the central shaft is a stepped shaft, and the second connecting rod is connected to the central shaft through a bearing.

Preferably, the connecting hole for connecting the central shaft is arranged on the second connecting rod, or the connecting hole for connecting the central shaft is arranged on a support lug, and the support lug is connected with the second connecting rod.

In a preferred embodiment, the slide rail, the lower baffle, and the central shaft are fixed to the mounting plate by welding, bonding, bolting, or the like.

Preferably, the water retaining door adopts a double-layer structure.

In one scheme, the water retaining door comprises a first door plate and a second door plate, the first door plate is connected with the second door plate through a plurality of supporting plates, the first door plate is parallel to the second door plate, the supporting plates are perpendicular to the first door plate and the second door plate respectively, and the first connecting rod is hinged to the first door plate.

Furthermore, the water-stop valve further comprises a packaging shell used for packaging the sliding rail and the first connecting rod, the packaging shell is detachably fixed on the mounting plate, an opening used for passing through the water-stop valve is formed in the lower end of the packaging shell, and the opening corresponds to the water through hole.

Preferably, the second connecting rod comprises a first section for connecting the first connecting rod and a second section for connecting the buoyancy device, wherein the first section is connected with the second section through a third section, the third section is perpendicular to the first section and the second end, and a connecting hole for connecting the central shaft is formed in the third section.

Compared with the prior art, use the utility model provides a pair of hydraulic flow control device has following beneficial effect:

1. on one hand, the device can ensure that the pressing force of the water retaining door acting on the mounting plate is kept uniform (namely unchanged) in the process of moving the water retaining door up and down, thereby being beneficial to smooth and stable moving up and down of the water retaining door and realizing better sealing effect between the water retaining door and the mounting plate; on the other hand, the pressure of the water retaining door acting on the mounting plate is moderate and uniformly distributed, and the water retaining door is not influenced by the first connecting rod, so that the water retaining door is small in abrasion and slow in abrasion in the process of moving up and down relative to the mounting plate, and the service life is prolonged; in addition, in this scheme, the structure of device is compacter, and whole volume is less, especially reduces greatly at the longitudinal dimension, is favorable to reducing the demand to the mounted position space size, and the practicality is stronger.

2. In this device, through the cooperation of manger plate door and slide rail, can effectively eliminate the installation clearance between slide rail and the manger plate door, make at the removal in-process of manger plate door, can ensure that the length direction of the accurate edge slide rail of manger plate door removes, the condition of rocking about neither can appearing, the condition of rocking around also can not appearing (the direction of perpendicular to mounting panel promptly), furthermore, because the manger plate door is fixed in the slide rail completely, thereby make the distance (or the pressure size is definite) between manger plate door and mounting panel or the sealed pad be definite, and then can effectively avoid the transition wearing and tearing problem that exists among the prior art.

3. The hydraulic flow control device is driven by water power, does not need extra power and does not generate energy consumption.

4. The hydraulic flow control device does not need additional equipment to provide power, and avoids pollution caused by leakage and damage of the power device.

5. The civil construction of the hydraulic flow control device is simple in structure and simple in civil construction

6. The hydraulic flow control device has flexible structural design, simple structure and convenient equipment installation and maintenance.

7. The hydraulic flow control device is made of rustproof and anticorrosive metal and non-metal materials, and is durable in use and extremely long in service life.

8. The hydraulic flow control device can ensure the constancy of the drainage flow, and can ensure the stability of the operation of a rear-end drainage pipe network after the hydraulic flow control device is adjusted to the proper flow. Under the condition that the water amount at the front end is increased suddenly, the device can be automatically closed, and the impact on a rear-end drainage system is prevented.

9. Under the condition that the water amount at the front end is increased suddenly, the device can be automatically closed, and the impact on a rear-end drainage system is prevented.

10. The hydraulic flow control device has no quick-wear parts, few fault points and low fault rate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a hydraulic flow control device provided in embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of a hydraulic flow control device provided in embodiment 1 of the present invention.

Fig. 3 is a schematic partial structural view of a hydraulic flow control device provided in embodiment 1 of the present invention.

Fig. 4 is a schematic structural view of a buoyancy device in a hydraulic flow control device provided in embodiment 1 of the present invention.

Fig. 5 is a schematic structural diagram of a second link in a hydraulic flow control device according to embodiment 1 of the present invention.

Fig. 6 is another schematic structural diagram of a second link in a hydraulic flow control device according to embodiment 1 of the present invention.

Fig. 7 is a schematic structural view of a water blocking door in the hydraulic flow control device provided in embodiment 2 of the present invention.

Fig. 8 is a schematic cross-sectional structure diagram of a water gate in a hydraulic flow control device provided in embodiment 2 of the present invention.

Fig. 9 is a schematic structural diagram of a second link in a hydraulic flow control device according to embodiment 3 of the present invention.

Fig. 10 is a schematic structural view of a hydraulic flow control device provided in embodiment 3 of the present invention.

Description of the drawings

A mounting plate 101, a water retaining door 102, a first connecting rod 103, a second connecting rod 104, a buoyancy device 105, a mounting hole 106, a water through hole 107, a slide rail 108, a lower baffle 109, a central shaft 110, a sealing gasket 111, a connecting hole 112, a support lug 113,

the length of the baffle 201, the reinforcing plate 202,

a first door panel 301, a second door panel 302, a support panel 303,

a first section 401, a second section 402, a third section 403,

and a package 501.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As mentioned in the background, the conventional float-controlled shutoff valve generally has the problems of being not compact in structure, large in volume, easy to wear, uneven in pressing force applied to the gate plate, and the like, and in this embodiment, as shown in fig. 1 and fig. 2, the hydraulic flow control device is provided, which includes a mounting plate 101, a water blocking door 102, a first connecting rod 103, a second connecting rod 104, and a buoyancy device 105, wherein the mounting plate 101 is provided with a water through hole 107 and two slide rails 108, the water blocking door 102 is arranged between the two slide rails 108 and forms a moving pair with the slide rails 108, that is, the water blocking door 102 can move up and down relative to the slide rails 108; one end of the first connecting rod 103 is hinged to the water stop door 102, the other end of the first connecting rod is hinged to one end of the second connecting rod 104, the other end of the second connecting rod 104 is connected with the buoyancy device 105, the second connecting rod 104 is fixed to the mounting plate 101 and forms a rotating pair with the mounting plate 101, namely the second connecting rod 104 can rotate relative to the joint with the mounting plate 101; the water through hole 107 is located in the slide rail 108 or at one end of the slide rail 108, so that the water blocking door 102 can just block or partially block the water through hole 107 during the up-and-down movement, and the water blocking door 102 is used for controlling the opening degree (including the states of fully opening, partially opening, fully closing, and the like) of the water through hole 107 under the driving of the buoyancy device 105. The second connecting rod 104 is directly fixed on the mounting plate 101, so that planes of the first connecting rod 103, the second connecting rod 104, the water blocking door 102 and the water through hole 107 are parallel to each other, and in the process that the water blocking door 102 moves up and down, the acting force of the first connecting rod 103 on the water blocking door 102 is acted in the plane parallel to the water blocking door 102 (or the plane parallel to the mounting plate 101), and no stress component exists in the direction perpendicular to the water blocking door 102, on one hand, the pressing force of the water blocking door 102 on the mounting plate 101 is kept uniform (namely unchanged) in the process that the water blocking door 102 moves up and down, thereby being beneficial to smooth and stable up and down movement of the water blocking door 102 and realizing better sealing effect between the water blocking door 102 and the mounting plate 101; on the other hand, the pressure of the water retaining door 102 acting on the mounting plate 101 is moderate and uniformly distributed, and is not influenced by the first connecting rod 103, so that the water retaining door 102 is slightly abraded in the up-and-down moving process relative to the mounting plate 101, and the abrasion is slow (generally lower than the normal abrasion speed because the water retaining door is soaked in water for a long time), thereby being beneficial to prolonging the service life; in addition, in this scheme, the structure of device is compacter, and whole volume is less, especially reduces greatly at the longitudinal dimension, is favorable to reducing the demand to the mounted position space size, and the practicality is stronger.

It is understood that in this embodiment, the hinge is usually implemented by the cooperation of the rotating shaft and the hole, and the details are not described herein.

All parts in the hydraulic flow control device are made of rustproof and anticorrosive metal (such as stainless steel and the like) and non-metallic materials, and are durable and extremely long in service life.

In order to further enhance the sealing effect, in a preferred embodiment, the hydraulic flow control device further includes a sealing gasket 111, and the sealing gasket 111 is fixed to the mounting plate 101 and surrounds the water through hole 107. During the movement of the water blocking door 102, the sealing gasket 111 is just positioned between the water blocking door 102 and the mounting plate 101, and particularly, under the condition that the water passing hole 107 is completely closed by the water blocking door 102, better sealing can be realized, and water leakage is prevented. For example, as shown in fig. 2, in the present embodiment, a ring-shaped gasket 111 is used as the gasket 111, and the material of the gasket 111 is nylon or high-density polyethylene.

As shown in fig. 1 or fig. 2, in a preferred embodiment, the mounting plate 101 is provided with a plurality of mounting holes 106. The mounting plate 101 is a mounting carrier for each component, and the mounting holes 106 are provided so that the mounting plate 101 can be mounted at a predetermined position of the drainage system by expansion bolts or the like.

In order to calculate the real-time water passing area of the water passing hole 107 accurately when the water baffle is located at different positions, in a preferred embodiment, the water passing hole 107 should be relatively regular, for example, the water passing hole 107 may preferably be a round hole or a square hole. For example, as shown in fig. 2, in the present embodiment, a circular hole is used as the water through hole 107.

When the liquid level height of the installation position of the device is gradually increased, the position of the buoyancy device 105 is continuously increased under the action of buoyancy, the position of the water retaining door 102 is gradually reduced under the driving of the buoyancy device 105, at the moment, the water passing hole 107 is gradually blocked by the water retaining door 102, when the liquid level reaches the set height, the water passing hole 107 is completely blocked by the water retaining door 102, at the moment, the continuous downward movement of the water retaining door 102 is generally limited (if the liquid level is continuously increased, the water retaining door 102 can also continuously move downward under the driving of the buoyancy device 105), and in order to avoid the situation that the completely closed water passing hole 107 is opened again, the device further comprises a lower baffle 109 for limiting the continuous downward movement of the water retaining door 102, wherein the lower baffle 109 is arranged below the water passing hole 107 and fixed on the installation plate 101; by providing the lower baffle 109 below the water passing hole 107, the water stop door 102 is just in contact with the lower baffle 109 when the water stop door 102 moves to the lowest position, thereby effectively restricting the water stop door 102 from continuing to move downwards by the lower baffle 109; it will be appreciated that the bottom of the water table or buoyancy device 105 may be in direct contact with the ground when it is moved to the lowest position and so may be used to provide a stop member to limit the downward movement of the buoyancy device 105.

In order to adapt to the shape of the water through hole 107, in a preferred scheme, the lower edge of the water baffle door 102 is of an arc structure.

In a preferred embodiment, the shape of the lower baffle 109 is adapted to the shape of the lower edge of the water gate 102. So that the water gate 102 and the lower fence 109 can be better fitted together.

As shown in fig. 1 or fig. 3, in a preferred embodiment, the lower baffle 109 includes a baffle 201 having an arc structure, and a plurality of reinforcing plates 202 connected to the baffle 201, and the reinforcing plates 202 are perpendicular to the baffle 201. The lower baffle 109 has a simple structure, is convenient to manufacture and low in cost, and has high rigidity in the using process.

In a preferred embodiment, the buoyancy device 105 is a hollow body. So that the buoyancy device 105 can float on the surface of the water under the influence of buoyancy. Preferably, the buoyancy device 105 is a cylindrical structure or a spherical structure or a rectangular parallelepiped structure; by way of example, as shown in fig. 4, in the present embodiment, the buoyancy device 105 is a buoy of a cylindrical structure; the second connecting rod 104 is connected with the buoy in a welding mode, and the second connecting rod 104 is connected to the side wall of one end of the buoy.

In a preferred embodiment, the device further comprises a central shaft 110, wherein the central shaft 110 is vertically fixed to the mounting plate 101, and the second link 104 is fixed to the central shaft 110 and forms a rotation pair with the central shaft 110. In a further preferred embodiment, the central shaft 110 is a stepped shaft, and the second connecting rod 104 is connected to the central shaft 110 through a bearing, for example, in an embodiment, the central shaft 110 is a stepped shaft including two steps (i.e., including three-section shafts with different cross sections), wherein one end of the central shaft 110 with a larger cross section is fixed to the mounting plate 101, an inner ring of the bearing is fixed to the shaft section with the second cross section row, an outer ring of the bearing is fixed to the connecting hole 112 on the second connecting rod 104, and a shaft end cover for locking the bearing is disposed on the shaft section with the smallest cross section.

In this embodiment, as shown in fig. 1 and 5, a connection hole 112 for connecting the central shaft 110 is provided on the second link 104, or as shown in fig. 6, the connection hole 112 for connecting the central shaft 110 is provided on a support lug 113, the support lug 113 is connected to the second link 104, and when the buoyancy device 105 moves up and down, the second link 104 rotates around the central shaft 110 of the central shaft 110.

In a preferred embodiment, the slide rail 108, the lower baffle 109, and the center shaft 110 are fixed to the mounting plate 101 by welding, bonding, bolting, or the like. For example, in the present embodiment, the slide rail 108, the lower baffle 109, and the central shaft 110 are fixed to the mounting plate 101 by welding.

As shown in fig. 2, when the water level at the front end of the device is low, the buoyancy device 105 is at a low position by its own weight, the water blocking door 102 is pulled by the first connecting rod 103 and the second connecting rod 104 to be at an upper end position, and at this time, the water blocking door 102 is in an open state, and the discharged medium (i.e., water) can flow out through the water through hole 107 on the mounting plate 101. As is evident from fig. 2, in the present embodiment, the torque of the water gate 102 with respect to the central shaft 110 is smaller than the torque of the buoyancy device 105 with respect to the central shaft 110.

As shown in fig. 1, when the water amount at the front end of the device increases and the water level rises, the buoyancy device 105 can move upwards by the buoyancy larger than the self gravity, along with the rising of the buoyancy device 105, the second connecting rod 104 rotates around the central shaft 110 to push the first connecting rod 103 and the water blocking door 102 to move downwards, the water blocking door 102 gradually blocks the water holes 107, when the buoyancy device 105 moves to the highest position, the water blocking door 102 completely blocks the water holes 107, and the device is in a completely closed intercepting state.

In the process of movement of the buoyancy device 105, the second connecting rod 104, the first connecting rod 103 and the water retaining door 102, the track formed by the slide rail 108 limits the left-right shaking of the water retaining door 102, and when the device is in a closed state, the contact surface of the sealing gasket 111 and the water retaining door 102 forms a sealing function to prevent leakage. By way of example, in the present embodiment, the cross-section of the slide rail 108 may be an L-shaped structure. So as to trap the water gate 102 between the slide rail 108 and the mounting plate 101.

In the process of switching the opening and closing states of the device, the water retaining door 102 controlled by the buoyancy device 105 moves up and down, meanwhile, due to the special curve of the water retaining door 102, the water passing area of the water passing hole 107 changes accurately, and the water outlet flow of the water passing hole 107 is guaranteed to be consistent under the condition that the liquid level at the front end of the device changes continuously.

Example 2

The main difference between the present embodiment 2 and the above embodiment 1 is that in the hydraulic flow control device provided in the present embodiment, the water blocking door 102 is of a double-layer structure, the water blocking door 102 of the double-layer structure has better strength and can bear pressure at a higher water level, as shown in fig. 7, for example, the water blocking door 102 includes a first door panel 301 and a second door panel 302, the first door panel 301 and the second door panel 302 are connected through a plurality of support plates 303, the first door panel 301 and the second door panel 302 are parallel to each other, the support plates 303 are perpendicular to the first door panel 301 and the second door panel 302 respectively, and the first connecting rod 103 is hinged to the first door panel 301.

As shown in fig. 8, when the installation is performed, the first door panel 301 is disposed between the sliding rail 108 and the mounting plate 101, and the first door panel 301 is disposed at the upper end of the sliding rail 108, so that the sliding rail 108 is just clamped between the first door panel 301 and the second door panel 302, and the installation gap between the sliding rail 108 and the water blocking door 102 can be effectively eliminated, so that in the moving process of the water blocking door 102, the water blocking door 102 can be ensured to accurately move along the length direction of the sliding rail 108, and the left-right shaking condition and the front-back (i.e. the direction perpendicular to the mounting plate 101) shaking condition can not occur, and in addition, the water blocking door 102 is completely fixed to the sliding rail 108, so that the distance (or the pressure) between the water blocking door 102 and the mounting plate 101 or the gasket 111 is determined, and the transitional wear problem in the prior art can be effectively avoided.

Example 3

The main difference between this embodiment 3 and the above embodiment 2 is that the hydraulic flow control device provided in this embodiment further includes an enclosure 501 for enclosing the slide rail 108 and the first connecting rod 103, the enclosure 501 is detachably fixed to the mounting plate 101, and the enclosure 501 can effectively prevent foreign matters in the surrounding environment from interfering with the normal operation of the device, for example, strip-shaped foreign matters carried in water, such as branches, from blocking the first connecting rod 103.

For facilitating better installation of the enclosure 501, as shown in fig. 10 by way of example, in the present embodiment, the enclosure 501 is fixed to the mounting plate 101 by bolts, an opening is formed at a lower end of the enclosure 501 and corresponds to the water through hole 107, and the water blocking door 102 can extend out of the enclosure 501 through the opening to adjust the water through area of the water through hole 107; in order to make the structure of the device more compact, in a further embodiment, the second connecting rod 104 includes a first section 401 for connecting the first connecting rod 103 and a second section 402 for connecting the buoyancy device 105, wherein the first section 401 and the second section 402 are connected by a third section 403, the third section 403 is perpendicular to the first section 401 and the second end, respectively, and the connecting hole 112 for connecting the central shaft 110 is disposed in the third section 403, as shown in fig. 9, when the included angle between the first section 401 and the second end is 180 degrees, the second connecting rod 104 is in a Z-shaped structure, so that the first section 401 of the second connecting rod 104 can be enclosed in the enclosure 501, and the third section is connected to the central shaft 110, and the second section 402 can be exposed outside the enclosure 501, as shown in fig. 10, and is connected to the buoyancy device 105, thereby facilitating the structure of the hydraulic flow control device to be more compact; it can be understood that the included angle between the first segment 401 and the second end may be determined according to actual requirements, and is not described herein again.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides a water conservancy flow control device, its characterized in that includes mounting panel, manger plate door, first connecting rod, second connecting rod and buoyant device, be provided with water hole and two slide rails on the mounting panel, the manger plate door sets up between two slide rails to constitute the removal pair with the slide rail, the one end of first connecting rod articulates in the manger plate door, and the other end articulate in the one end of second connecting rod, the other end of second connecting rod with buoyant device links to each other, the second connecting rod is fixed in the mounting panel to constitute the revolute pair with the mounting panel, cross the water hole and be located in the slide rail or be located the one end of slide rail, manger plate door are used for controlling under buoyant device's drive the aperture of crossing the water hole.

2. The hydraulic flow control device of claim 1, further comprising a gasket secured to the mounting plate and surrounding the water flow aperture.

3. The hydraulic flow control device of claim 1, wherein the water through holes are round holes or square holes.

4. The hydraulic flow control device according to claim 1, further comprising a lower baffle for limiting the downward movement of the water gate, wherein the lower baffle is disposed below the water through hole and fixed to the mounting plate, and the lower baffle has a shape adapted to a shape of a lower edge of the water gate.

5. The hydraulic flow control device of claim 4, wherein the lower baffle comprises an arcuate baffle and a plurality of reinforcing plates attached to the baffle, the reinforcing plates being perpendicular to the baffle, respectively.

6. The hydraulic flow control device of claim 1, further comprising a central shaft, the central shaft being perpendicularly secured to the mounting plate, and a second linkage being secured to the central shaft and forming a revolute pair with the central shaft.

7. The hydraulic flow control device of claim 6, wherein the second link comprises a first segment for connecting to the first link, a second segment for connecting to the buoyancy device, wherein the first segment and the second segment are connected by a third segment, and the third segment is perpendicular to the first segment and the second end, respectively, and a connection hole for connecting to the central shaft is provided in the third segment.

8. The hydraulic flow control device according to any one of claims 1 to 7, wherein the water blocking door has a double-layer structure.

9. The hydraulic flow control device according to claim 8, wherein the water blocking door comprises a first door panel and a second door panel, the first door panel and the second door panel are connected by a plurality of support plates, the first door panel and the second door panel are parallel to each other, the support plates are perpendicular to the first door panel and the second door panel, respectively, and the first connecting rod is hinged to the first door panel.

10. The hydraulic flow control device according to claim 8, further comprising an enclosure for enclosing the slide rail and the first connecting rod, wherein the enclosure is detachably fixed to the mounting plate, and the lower end of the enclosure is provided with an opening for passing through the water blocking door, and the opening corresponds to the water through hole.

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