CN112262737A - Constant automatic reversing drainage system for engineering - Google Patents

Abstract

The invention discloses a constant automatic reversing drainage system for engineering, which comprises a main pipeline which is vertically arranged, wherein the bottom of a water accumulator comprises an L-shaped boosting pipeline, a fixed guide block is fixedly connected to the inner wall of the top end of the boosting pipeline, a movable guide block is arranged below the fixed guide block in a right-to-ground manner, an insulating plate is fixedly connected to the bottom of the movable guide block, and the insulating plate can be supported by a supporting piece in the top section to limit the falling height position of the insulating plate. The protection device on the boosting pipeline comprises a pressure relief pipeline, a conical plug, a sliding screw rod, a tensile spring and a shaft sleeve, wherein the pressure relief pipeline is arranged below the insulating plate and communicated with the boosting pipeline when the fixed guide block and the movable guide block are contacted, the sliding screw rod is axially and slidably arranged in the shaft sleeve, the shaft sleeve is coaxially erected in the pressure relief pipeline, and the thread section of the sliding screw rod is screwed into the small end surface of the conical plug in a threaded fit manner. The invention can realize the automatic reversing flow when the fluid is injected quantitatively and is safe and reliable.

Description

Constant automatic reversing drainage system for engineering

Technical Field

The invention relates to the field of engineering, in particular to a constant automatic reversing drainage system for engineering.

Background

In engineering application, often meet when needing to carry out the filling injection to certain fluid, for example water, fill the circumstances that just must stop the injection after a certain amount, and to this kind of operating mode, the method that adopts at present adopts is mostly to adopt under the prerequisite of regularly deciding flow rate V, through setting for the open time t of corresponding valve, controls the injection volume, and in the actual production life, the flow rate of fluid is indefinite many times, can't come the quantitative control through the mode of flow rate V t, therefore the limitation of adaptation operating mode scope is slightly bigger. In addition, if the electrical control performance of the valve fails once, the fluid in the container overflows or the liquid level increases steeply, so that the container overflows or even bursts, the fluid flow direction cannot be switched timely to conduct reversing drainage when the certain injection amount is reached, and the fluid is drained timely or drained into other prepared containers, so that an operator can treat the filled containers.

Disclosure of Invention

The invention aims to solve the problems that the constant automatic reversing drainage system for engineering is provided aiming at the defects in the prior art, the limitation of the adaptive working condition range is slightly large, and the automatic reversing drainage cannot be realized in time when the sufficient amount of fluid is injected in the prior art, and the constant automatic reversing drainage system is safe and reliable to use.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a constant automatic reversing drainage system for engineering, which comprises a main pipeline and a water accumulator, wherein the main pipeline is vertically arranged, and the water accumulator is connected to the lower end of the main pipeline; a reversing valve for controlling the reversing of the main pipeline is arranged at the upper end of the main pipeline;

the bottom of the water accumulator comprises an L-shaped boosting pipeline, a fixed guide block is fixedly connected to the inner wall of the top end of the boosting pipeline, a movable guide block is arranged below the fixed guide block in an opposite mode, an insulating plate is fixedly connected to the bottom of the movable guide block, the insulating plate is installed in the top section of the boosting pipeline in a sliding fit mode in a piston mode and can be supported by a supporting piece in the top section to limit the falling height position of the insulating plate; the fixed guide block and the movable guide block are respectively connected with a power supply and a controller of the hydraulic rod, so that when the fixed guide block is contacted with the movable guide block, the controller controls the hydraulic rod to extend towards the reversing valve to open the reversing valve to reverse the flow direction of the fluid. And a protection device is arranged on the boosting pipeline, the protection device comprises a pressure relief pipeline, a conical plug, a sliding screw rod, a tensile spring and a shaft sleeve, the pressure relief pipeline is arranged below the insulating plate when the fixed guide block is contacted with the movable guide block and is communicated with the boosting pipeline, the sliding screw rod is axially and slidably arranged in the shaft sleeve, the shaft sleeve is coaxially erected in the pressure relief pipeline, a thread section of the sliding screw rod is screwed into a small end face of the conical plug in a threaded fit manner, the tensile spring is sleeved on a section of the sliding screw rod close to the screw cap, two ends of the tensile spring are respectively contacted with an end face of the screw cap and an end face of the shaft sleeve and are in a compressed state, a handle for holding is fixedly connected to a large end face of the conical plug, the axis of the handle is in sliding fit with the conical plug and cannot be completely separated all the time, so that when the sliding screw rod is rotated by, the conical plug can be fixedly plugged into the drainage pipeline and seals the outlet end of the pressure relief pipeline.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, when the pressure in the boosting pipeline of the water accumulator rises to a set value, the reversing valve is opened through the hydraulic rod so as to automatically realize reversing drainage in time, and the water accumulator is prevented from being excessively injected seriously. On the other hand, the protection device is arranged on the boosting pipeline, so that the boosting pipeline cannot burst after the water accumulator is excessively injected when an accident occurs, particularly, the guide block in the boosting pipeline is protected, and when the overlarge pressure intensity is avoided, fluid such as water is prevented from flowing in from a gap between the insulating plate and the boosting pipeline, the accident is generated, and the safety and the reliability are realized.

Drawings

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

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a hinge structure of the reverser plate;

FIG. 3 is a bottom view of the strip of FIG. 1 with the strip of apertures exposed;

FIG. 4 is an enlarged view of a structure at an upper section of the booster duct;

fig. 5 is another schematic structure of the present invention.

The reference numerals are explained below: the device comprises a main pipeline 1, a reversing plate 2, a water accumulator 3, a boosting pipeline 301, an expansion bin 4, a piston plate 5, a return spring 6, a strip hole 7, a reversing pipeline 8, a hydraulic rod 9, a signal wire 10, a connecting rod 11, a drainage pipeline 12, a sliding plate 13, a fixed guide block 14, a movable guide block 15, an insulating plate 16, a supporting part 17, an auxiliary rod 18, a strip-shaped sliding plate 19, a through hole 20, an inclined plate 21, a piston push rod 22, a mounting plate 23, a homing spring 24, a supporting seat 25, a magnet 26, a bonded magnet 27, a pressure relief pipeline 28, a shaft sleeve 29, a conical plug 30, a handle 31, a threaded section 32, a sliding screw 33, a tensile spring 34, a hinge shaft 35, a supporting ring 36, a bulge 37, a jacking spring.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention clearer and easier to understand, the technical scheme of the invention is described in detail below. It should be understood by those skilled in the art that the following examples are illustrative of some, but not all, specific embodiments of the invention and therefore the scope of the invention is not limited thereto.

Referring to fig. 1, the embodiment discloses a constant automatic reversing drainage system for engineering, which structurally comprises a main pipe 1 vertically arranged and a water accumulator 3 connected to the lower end of the main pipe 1, wherein the water accumulator 3 is used for containing water or other fluid media. And a reversing valve for controlling the reversing of the main pipeline 1 is arranged at the upper end of the main pipeline.

Meanwhile, in order to fully automatically realize the function that the reversing plate 2 can be hinged and rotated to a predetermined position to stay and match the predetermined water injection amount of the water storage device 3, as shown in fig. 4, the bottom of the water storage device 3 comprises an L-shaped boosting pipeline 301, a fixed guide block 14 is fixedly connected to the inner wall of the top end of the boosting pipeline 301, a movable guide block 15 is arranged below the fixed guide block 14 in an opposite manner, an insulating plate 16 is fixedly connected to the bottom of the movable guide block 15, and the insulating plate 16 is arranged in the top section of the boosting pipeline 301 in a sliding fit manner in a piston manner and can be supported by a supporting piece 17 in the top section to limit the falling height position of the insulating plate; the fixed guide block 14 and the movable guide block 15 are respectively connected with a power supply and a controller of the hydraulic rod 9, so that when the fixed guide block 14 is contacted with the movable guide block 15, the controller controls the hydraulic rod 9 to extend towards the reversing valve to open the reversing valve to reverse the flow direction of fluid.

In addition, in this embodiment, a protection device is added to the above-mentioned boosting pipeline 301, as shown in fig. 4, the protection device includes a pressure relief pipeline 28, a conical plug 30, a sliding screw 33, a tensile spring 34, and a shaft sleeve 29, the pressure relief pipeline 28 is installed below the insulating plate 16 when the fixed guide block 14 contacts the movable guide block 15 and is communicated with the boosting pipeline 301, the sliding screw 33 is axially slidably installed in the shaft sleeve 29, the shaft sleeve 29 is coaxially erected in the pressure relief pipeline 28, a threaded section 32 of the sliding screw 33 is screwed into a small end face of the conical plug 30 in a threaded manner, the tensile spring 34 is sleeved on a section of the sliding screw 33 close to the nut, two ends of the tensile spring 34 are respectively contacted with an end face of the nut and an end face of the shaft sleeve 29 and are in a compressed state, a handle for holding is fixedly connected to a large end face of the conical plug 30, the handle is axially slidably engaged with the conical plug 30 and the two are not completely separated from each other, so that when the sliding screw 33 is rotated by holding the handle, the conical plug 30 can be fixedly inserted into the drain pipe 12 and seal the outlet end of the pressure relief pipe 28. The protection device is arranged on the boosting pipeline 301, so that the boosting pipeline 301 cannot burst after the water accumulator 3 is injected in an excess manner when an accident occurs, particularly, a guide block in the boosting pipeline 301 is protected, and when the overlarge pressure intensity is avoided, fluid such as water flows in from a gap between the insulating plate 16 and the boosting pipeline 301, the accident is generated, and the safety and the reliability are realized. By adopting the structure, when the water storage device is used, if the water storage device 3 exceeds the set water level, the two guide blocks are contacted, the pressure in the boosting pipeline 301 is continuously increased, the elastic force of the tensile spring 34 is overcome, the sliding screw 33 slides towards the outer side, and therefore the conical plug 30 is separated from the pressure relief pipeline 28, pressure relief is realized, water overflows, pressure is timely relieved, and safety is ensured.

In detail, in a specific manufacturing process, the reversing valve of the present embodiment can be implemented in a variety of structures:

firstly, the reversing valve comprises a strip-shaped sliding plate 19 and an expansion bin 4, wherein the expansion bin 4 is connected to one side of the main pipeline 1, and the expansion bin 4 is connected with another water accumulator 3; the strip-shaped sliding plate 19 is provided with a through hole 20 for water to flow through, the strip-shaped sliding plate 19 is installed on the main pipeline 1 in a sliding fit manner along a direction perpendicular to the main pipeline 1, and when the hydraulic rod 9 pushes the strip-shaped sliding plate 19 to slide towards one side of the expansion bin 4, the through hole 20 of the strip-shaped sliding plate 19 enters the expansion bin 4 to realize reversing. Further, an installation plate 23 may be fixedly connected to one side of the bar-shaped sliding plate 19, a support 25 is disposed between the installation plate 23 and the main pipeline 1, the support 25 and the installation plate 23 are connected together by a horizontally disposed return spring 24, a magnet 26 is embedded in a surface of one side of the support 25 facing the installation plate 23, a sticky magnet 27 is further fixed to the bar-shaped sliding plate 19 near the installation plate 23, and the through hole 20 enters the expansion bin 4 when the magnet 26 and the sticky magnet 27 are integrally attached.

And secondly, the reversing valve is a three-way reversing valve directly available in the market.

Thirdly, the reversing valve is an existing manual valve, namely a Cris valve.

Fourthly, the reversing valve can also take the reversing plate 2 and the piston plate 5 as core elements and is designed according to the following structure: a reversing plate 2 is hinged to one side of the main pipeline 1 close to the inlet end of the main pipeline, and the reversing plate 2 can be hinged to a set position to stop. Meanwhile, with continuing reference to fig. 1, the opening of the expansion bin 4 is arranged opposite to the reversing plate 2, a piston plate 5 is arranged in the expansion bin 4 in a sliding fit mode, the piston plate 5 divides the expansion bin 4 into a left bin chamber and a right bin chamber which are independent, the left bin chamber is communicated with the main pipeline 1 through the opening, with reference to fig. 3, a strip hole 7 is formed in the upper side wall of the left bin chamber, and the strip hole 7 is connected with the inlet end of a reversing pipeline 8 so as to lead water out and flow out in a reversing mode. In addition, in this embodiment, a return spring 6 is further disposed in the right chamber, one end of the return spring 6 is connected to the end surface of the piston plate 5, and the other end of the return spring is connected to the chamber bottom of the right chamber, so that the piston plate 5 is pushed to the chamber opening to seal the chamber opening in a natural state, that is, when the direction is not changed, the chamber opening is sealed by the piston plate 5. When the reversing plate 2 rotates towards one side of the expansion bin 4 due to the hinged structure of the reversing plate 2, the free end of the reversing plate 2 can extend into the expansion bin 4 to push the piston plate 5 to the position where the strip hole 7 is exposed, and the reversing plate 2 at the moment divides the pipe hole of the main pipe 1 into two parts which are independent from top to bottom, namely, at the moment, no water flows into the lower part of the main pipe 1, and the water on the upper part flows into the expansion bin 4 through the reversing plate 2.

The constant automatic reversing drainage system for engineering of above-mentioned embodiment is when using, water begins to flow from top to bottom always in trunk line 1, flow into and save in water storage device 3, and when the water accumulation in water storage device 3 reaches the set quantity, switching-over board 2 rotates to in the expansion bin 4, open strip hole 7 and can realize that water flows through switching-over board 2 and flow towards the switching-over of expansion bin 4, the lower part of trunk line 1 is thoroughly sealed and can not flow into water by switching-over board 2 this moment, water has all flowed into in the expansion bin 4 from switching-over board 2, and flow into in the switching-over pipeline 8 from the strip hole 7 that exposes, realize the switching-over drainage, change the flow direction. More specifically, when the water in the reservoir 3 is accumulated to a predetermined amount, the liquid level in the pressure-increasing pipe 301 reaches a certain height, so that the movable guide block 15 lifted by the insulating plate 16 is lifted to a position contacting with the fixed guide block 14, thereby realizing the conduction operation of the controller of the hydraulic rod 9, and driving the hydraulic rod 9 to push the reversing plate 2 to rotate, so as to adaptively and automatically change the flow direction in time when the reservoir 3 is filled with a predetermined amount of water.

As one of the preferred constructional details for the present diverter valve where the diverter plate 2 participates in the design, as shown in fig. 1, at the bottom lowest end of the reservoir 3 is mounted a drain pipe 12; meanwhile, the device also comprises a connecting rod 11 in a shape like a ']', wherein the upper horizontal section of the connecting rod 11 is vertically fixed on one surface of the piston plate 5 facing the return spring 6, the lower horizontal section is fixedly connected with a sliding plate 13, the sliding plate 13 is arranged on the drainage pipeline 12 in a sliding fit manner in a direction vertical to the drainage pipeline 12 and closes the drainage pipeline 12 in a natural state, and when the piston plate 5 is pushed to a position completely exposing the strip hole 7, the sliding plate 13 completely opens the drainage pipeline 12. When the device is used, the drainage pipeline 12 is initially closed, after the water reservoir 3 is filled to a sufficient amount, the reversing plate 2 automatically reverses to the expansion bin 4, the piston plate 5 is pushed to move, and then the connecting rod 11 is pushed, so that the connecting rod 11 drives the sliding plate 13 to move, the drainage pipeline 12 is opened, water can be filled into an externally connected container, and meanwhile, a space is reserved for next water filling.

As a second preferred construction detail, in order to discharge water from the previous reservoir 3 and close the outlet of the other reservoir 3 in time for filling, the present embodiment is designed as follows: as shown in fig. 1, the water storage device 3 also comprises the other water storage device 3, the inlet end of the water storage device 3 is connected with the outlet end of the reversing pipe 8, when the fixed guide block 14 and the movable guide block 15 in the other water storage device 3 are contacted, the hydraulic rod 9 is contracted and reset, so that the reversing plate 2 automatically falls back into the main pipe 1; the lowest position of the bottom end of the other water storage device 3 is also provided with another drainage pipeline 12, the drainage pipeline 12 is also internally provided with a sliding plate 13, the sliding plate 13 is fixedly connected with the connecting rod 11 through an auxiliary rod 18, and when the return spring 6 is in a free state, the sliding plate 13 of the other water storage device 3 opens the drainage pipeline 12. When the water storage device is used, after the previous water storage device 3 stores enough water, the reversing plate 2 automatically reverses and drains into the reversing pipeline 8, in the reversing process of the reversing plate 2, the drainage pipeline 12 at the bottom of the previous water storage device 3 is opened by the sliding plate 13, and the sliding plate 13 of the drainage pipeline 12 of the other water storage device 3 closes the drainage pipeline 12, so that the next water storage is realized. The above detailed structure may also: if the other drainage pipe 12 is not provided, an electromagnetic valve (not shown in the figure) can be directly installed at the lowest position of the bottom end of the other water reservoir 3, a controller of the electromagnetic valve is connected with the movable guide block 15 in the other water reservoir 3, so that when the corresponding movable guide block 15 rises to be contacted with the fixed guide block 14, the electromagnetic valve is opened to drain the other water reservoir 3, and when the two guide blocks of the previous water reservoir 3 are contacted, the electromagnetic valve is closed to prepare for water storage after reversing; the above arrangement is primarily intended as an electrically controlled alternative to the mechanical drive arrangement described above in the form of the linkage 11 and auxiliary lever 18, for the technician to select according to specific environmental requirements. Preferably, the upper end of the other water reservoir 3 is in an inverted funnel shape and the top end of the funnel shape is connected with the reversing pipe 8 to completely flow water downwards. Preferably, a stop for blocking the piston plate 5 from sliding out towards the inside of the main pipe 1 is arranged at the bin mouth of the expansion bin 4 to prevent the piston plate from sliding out. Preferably, a hardened steel ball is fixed at the free end of the hydraulic rod 9 to better push the reversing plate 2.

As a third preferred construction detail, based on the switch commutation principle of the strip-shaped sliding plate 19, the commutation pattern of the commutation plate 2 can be alternatively designed as follows: first, two of said reservoirs 3 are provided, one reservoir 3 and the other reservoir 3; then, with continued reference to fig. 5, a piston push rod 22 is provided in sliding fit in the vertical pipe sections of the boost pipes 301 of the two reservoirs 3, the top end of the piston push rod 22 protruding out of the top of the boost pipe 301. As in the previous embodiment, a strip-shaped sliding plate 19 is horizontally slidably fitted on the main pipe 1, the strip-shaped sliding plate 19 vertically penetrates the main pipe 1, and the strip-shaped sliding plate 19 has a through hole 20 at the center thereof, and the through hole 20 is used for water to flow through. One end of the strip-shaped sliding plate 19 penetrates through the supporting seat 25, the other end of the strip-shaped sliding plate penetrates through the expansion bin 4 and extends out of the expansion bin 4, the two ends of the strip-shaped sliding plate 19 are fixedly connected with an inclined plate, the two inclined plates incline outwards towards one side departing from the main pipeline 1 so as to form an obtuse angle, and the two inclined plates can be respectively in contact fit with one piston push rod 22 arranged below the two inclined plates. One side of the strip-shaped sliding plate 19, which is close to one of the inclined plates, is fixedly connected with an installation plate 23, a support seat 25 is arranged between the installation plate 23 and the main pipeline 1, the support seat 25 and the installation plate 23 are connected together through a return spring 24 which is horizontally arranged, and a magnet 26 is embedded in the surface of one side of the supporting seat 25 facing the mounting plate 23, a sticky magnet 27 is fixed on the strip-shaped sliding plate 19 close to the mounting plate 23, when the piston push rod 22 on one side pushes the strip-shaped sliding plate 19 to slide towards the expansion bin 4 side, the magnet 26 and the bonded magnet 27 are connected into a whole in an adsorption manner, and the through hole 20 of the strip-shaped sliding plate 19 enters the expansion chamber 4, when the piston push rod 22 on the other side pushes the corresponding inclined plate, the through hole 20 is returned into the main pipe 1 against the attracting force between the magnet 26 and the viscous magnet 27 and with the aid of the return spring 24. The difference between the structure and the aforementioned structure without the inclined plate 21, the magnet 26, the sticky magnet 27 and other elements is that the strip-shaped sliding plate 19 can be more quickly and timely retracted and returned automatically; and, in essence, the piston pusher 22, the inclined plate 21, the magnet 26, the viscous magnet 27, and the aforementioned bar-shaped sliding plate 19, etc. constitute the direction valve of the present invention. In the specific use, the water level in the boosting pipe 301 of the previous water reservoir 3 rises, the piston push rod 22 moves upwards to push the right inclined plate to move, thereby pushing the bar-shaped sliding plate 19 to slide towards the right, so that the through hole 20 originally in the main pipe 1 gradually moves out of the main pipe 1 and deflects towards the expansion bin 4, in the process of moving the bar-shaped sliding plate 19 towards the right, the homing spring 24 is compressed, then the sticky magnet 27 is contacted and adsorbed with the magnet 26, at the moment, the through hole 20 is completely positioned in the expansion bin 4, the water flow flows into the expansion bin 4 from the bar-shaped sliding plate 19, passes through the through hole 20 and falls into the other water reservoir 3 connected below the expansion bin 4, thereby realizing the automatic reversing drainage, when the other water reservoir 3 has enough water, the corresponding piston push rod 22 rises to push the right inclined plate to move, so that the bar-shaped sliding plate 19 moves backwards to the left, and overcomes the magnetic attraction force of the, the water storage tank returns to the original position leftwards under the assistance of the reset action of the reset spring 24, so that the through hole 20 returns to the main pipeline 1 again to store water for the previous water storage device 3, and thus, the water injection with automatic reversing is realized by adopting a purely mechanical linkage structure. In order to realize the full automatic alternate injection of the two water reservoirs 3 continuously and alternately, a liquid level meter is vertically arranged in the boosting pipeline 301 of one water reservoir 3, an electromagnetic valve which is communicated with the liquid level meter is arranged at the lowest position of the bottom of the water reservoir 3, and the electromagnetic valve is opened when the liquid level in the boosting pipeline 301 reaches the height that the strip-shaped sliding plate 19 slides until the through hole 20 of the strip-shaped sliding plate is completely positioned in the expansion bin 4. When in use, the full-automatic water accumulator 3 can be continuously and alternately filled in the whole process.

In the above structure, the electrical signal control mode of the aforementioned fixed guide block 14 and the movable guide block 15 is actually changed into mechanical control, that is, the piston push rod 22 is used to push the inclined plate, so as to push the sliding of the strip sliding plate 19, and the sliding of the strip sliding plate 19 changes the position of the through hole 20 thereof, so that the through hole 20 can be located in the main pipe 1 or the expansion bin 4, so as to automatically switch the circulation channel between the main pipe 1 and one of the water reservoirs 3 and between the main pipe 1 and the other water reservoir 3. Of course, based on the above structure, the electric signal control form of the movable guide block 15 and the structure form of the piston push rod 22 for pushing the inclined plate can be alternatively used to achieve the purpose of automatic reversing control, such as: when the hinged reversing plate 2 is adopted, the water accumulator 3 adopts the electric signal control mode of the movable guide block 15 to replace the electric signal control mode of the piston rod for the rotation drive of the reversing plate 2. For another example: when the reversing structure of the bar-shaped sliding plate 19 is adopted, the pushing triggering principle of the piston push rod 22 can be replaced by the contact triggering of the fixed guide block 14 and the movable guide block 15, correspondingly, the mounting plate 23, the return spring 24, the magnet 26 and the viscous magnet 27 on the bar-shaped sliding plate 19 are uniformly deleted and are not used, and a hydraulic telescopic rod connected with the bar-shaped sliding plate 19 is mounted instead, and the hydraulic telescopic rod is controlled by the contact action of the fixed guide block 14 and the movable guide block 15. On the other hand, in order to make the reversing more stable and reliable, the double valve control can be realized, that is, the piston push rod 22 pushes the trigger and the contact trigger of the fixed guide block 14 and the movable guide block 15 are used simultaneously, the reversing plate 2 and the strip-shaped sliding plate 19 are arranged in the main pipeline 1 in an up-and-down relationship, and only when the two meet the action condition simultaneously, the main pipeline 1 is opened or closed.

Some water reservoirs 3 in the above embodiments can be used in practice, and water in the water reservoirs 3 can be discharged manually and flexibly as necessary according to the field situation, so as to empty the water reservoirs 3 for the next injection.

Finally, in the specific manufacturing, for the aforementioned hinging rotation of the reversing plate 2, it is also possible to extend one end of a hinging shaft 35 fixed on the reversing plate 2 to the outside of the main pipeline 1, and then preferably fix a handwheel structure in a direction disk shape at the end of the hinging shaft 35 so as to rotate the hinging shaft 35. As shown in fig. 2, it is also necessary to provide an elastically telescopic pin 39 radially inside the portion of the hinge shaft 35 exposed from the main pipe 1, and one end of the pin 39 is pushed to a position extending beyond the surface of the hinge shaft 35 by the pushing spring 38. A supporting ring 36 is further fixed on the outer wall of the main pipe 1, the supporting ring 36 and the shaft sleeve 29 are at the end of the hinge shaft 35, the inner wall of the supporting ring 36 has two adjacent and spaced protrusions 37, a gap between the two protrusions 37 is provided for one end of the telescopic pin 39 to be clamped in, so that the hinge shaft 35 and the supporting ring 36 are relatively fixed, thereby realizing that the reversing plate 2 can be hinged and rotated to a predetermined position to stay, namely, rotated into the expansion bin 4 to push the piston plate 5 to expose the strip hole 7, and the strip hole 7 is substantially equal to one of the outlets of the reversing valve therein.

It should be noted that, in the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Therefore, it should be understood by those skilled in the art that any modification and equivalent replacement of the embodiments disclosed herein without departing from the technical spirit of the present invention shall be included in the scope of the present invention.

Claims (6)

1. The utility model provides a constant automatic reverse drainage system for engineering which characterized in that: the device comprises a main pipeline (1) which is vertically arranged and a water accumulator (3) which is connected to the lower end of the main pipeline (1), wherein a reversing valve for controlling the reversing of the main pipeline (1) is arranged at the upper end of the main pipeline (1);

the bottom of the water accumulator (3) comprises an L-shaped boosting pipeline (301), a fixed guide block (14) is fixedly connected to the inner wall of the top end of the boosting pipeline (301), a movable guide block (15) is arranged below the fixed guide block (14) in a facing manner, an insulating plate (16) is fixedly connected to the bottom of the movable guide block (15), and the insulating plate (16) is installed in the top section of the boosting pipeline (301) in a sliding fit manner in a piston manner and can be supported by a supporting piece (17) in the top section to limit the falling height position of the insulating plate; the fixed guide block (14) and the movable guide block (15) are respectively connected with a power supply and a controller of the hydraulic rod (9), so that when the fixed guide block (14) is in contact with the movable guide block (15), the controller controls the hydraulic rod (9) to extend towards a reversing switch of the reversing valve to open the reversing valve to reverse the flow direction of fluid;

the protection device is arranged on the boosting pipeline (301) and comprises a pressure relief pipeline (28), a conical plug (30), a sliding screw rod (33), a tensile spring (34) and a shaft sleeve (29), wherein the pressure relief pipeline (28) is arranged below the insulating plate (16) when the fixed guide block (14) is contacted with the movable guide block (15) and communicated with the boosting pipeline (301), the sliding screw rod (33) is axially and slidably arranged in the shaft sleeve (29), the shaft sleeve (29) is coaxially erected in the pressure relief pipeline (28), a thread section (32) of the sliding screw rod (33) is screwed into a small end face of the conical plug (30) in a threaded manner, one section of the sliding screw rod (33) close to the screw cap is sleeved with the tensile spring (34), and two ends of the tensile spring (34) are respectively contacted with an end face of the screw cap and an end face of the shaft sleeve (29) and are in a compressed state, a handle for holding is fixedly connected to the large end face of the conical plug (30), the handle and the conical plug (30) are in axial line sliding fit and cannot be completely separated all the time, so that when the handle is held and the sliding screw rod (33) is rotated, the conical plug (30) can be fixedly plugged into the drainage pipeline (12) and the outlet end of the pressure relief pipeline (28) is sealed.

2. The constant automatic reversing drainage system for engineering according to claim 1, which is characterized in that: the reversing valve comprises a strip-shaped sliding plate (19) and an expansion bin (4), one side of the main pipeline (1) is connected with the expansion bin (4), and the expansion bin (4) is connected with another water accumulator (3); the strip-shaped sliding plate (19) is provided with a through hole (20) for water to flow through, the strip-shaped sliding plate (19) is installed on the main pipeline (1) in a sliding fit mode along the direction perpendicular to the main pipeline (1), and when the hydraulic rod (9) pushes the strip-shaped sliding plate (19) to slide towards one side of the expansion bin (4), the through hole (20) of the strip-shaped sliding plate (19) enters the expansion bin (4) to achieve reversing.

3. The constant automatic reversing drainage system for engineering according to claim 2, characterized in that:

the utility model discloses a bar sliding plate, including bar sliding plate (19), mounting panel (23) are gone up the rigid coupling and are equipped with one supporting seat (25) between this mounting panel (23) and trunk line (1), and the homing spring (24) that set up through the level link together between this supporting seat (25) and mounting panel (23), and supporting seat (25) have magnet (26) towards the embedded magnet (26) that have in one side surface of mounting panel (23), lean on still be fixed with on bar sliding plate (19) of mounting panel (23) department and glue magnet (27), magnet (26) with when gluing magnet (27) absorption connection is as an organic whole through-hole (20) enter into in expansion bin (4).

4. The constant automatic reversing drainage system for engineering according to claim 1, which is characterized in that: the pressure boosting pipeline (301) is a cylindrical pipeline, the insulating plate (16) is a circular plate, and the supporting piece (17) is an annular ring coaxially fixed on the inner wall of the cylindrical pipeline.

5. The constant automatic reversing drainage system for engineering according to claim 1, which is characterized in that: the reversing valve is a three-way reversing valve.

6. The constant automatic reversing drainage system for engineering according to claim 1, which is characterized in that: the reversing valve is a Cris valve.

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