CN113482093A - Non-negative pressure water supply system for supplying water - Google Patents

Abstract

The invention belongs to the technical field of water supply equipment, and particularly relates to a non-negative pressure water supply system for supplying water, which comprises a pressure stabilizing tank body, a pressure pump and a variable frequency control cabinet, wherein the pressure stabilizing tank body, the pressure pump and the variable frequency control cabinet are connected to a tap water pipe; the pressure stabilizing tank body, the pressure pump and the variable frequency control cabinet are communicated through various connecting pipes, and the various connecting pipes are movably connected through a pipeline connecting structure; the inner pipe is in spherical hinge joint with the outer pipe II by utilizing the hinge ball, so that multi-angle adjustment is completed under the condition of not influencing water supply, the small-range position adjustment of non-negative-pressure water supply equipment during actual installation is facilitated, and other types of pipelines cannot be replaced or manufactured again and other situations possibly causing slight deviation can be avoided; the elastic pad sets up between inner tube and outer tube II, adapts to the vibrations in the operation, avoids the connecting pipe because receive long-term vibrations and impaired condition in the junction, has solved traditional fixed structure's flange and has impaired easily and can not stabilize well and be suitable for actual layout scheduling problem.

Description

Non-negative pressure water supply system for supplying water

Technical Field

The invention relates to the field of water supply technical equipment, in particular to a non-negative-pressure water supply system for supplying water.

Background

The non-negative pressure water supply system sets a constant pressure value, if the pressure of the pipe network is higher than the set pressure value, the pressure transmitter feeds the pressure of the pipe network back to the variable frequency control cabinet, and tap water can directly reach a user pipe network through a direct supply pipeline to supply water to users.

When the pressure of the municipal pipe network is changed or the water consumption of the user pipe network is changed to enable the pipe pressure to be lower than the set pressure, the pressure transmitter feeds the pipe network pressure back to a PI D controller in the variable frequency control cabinet, the output frequency of the frequency converter is compared and adjusted through a UPC watchdog controller, and the water pump unit is started to adjust the rotating speed of the water pump to maintain constant-pressure water supply.

The non-negative pressure water supply mainly comprises a non-negative pressure steady flow tank, a pressure tank, a non-negative pressure control cabinet, a water pump, a motor, a filter, a backflow preventer, a sensor, an electric contact pressure gauge, a pipeline assembly, a base and the like.

And then all need the pipe connection in numerous no negative pressure water supply equipment, in order to save space, the furnishings of numerous equipment are not the straight line and distribute, and then need different pipelines to splice the completion, the majority utilizes the flange to connect between the different pipelines, flange joint's structure is fixed, after equipment long-term operation, its position probably for can taking place the skew (equipment vibration screw is not hard up, or equipment has the reason that slight discrepancy etc. all take place the skew to equipment when actual installation distributes), and then the flange of structure fixing is impaired easily and can not be fine stable practical overall arrangement that is suitable for.

Disclosure of Invention

The device aims at the problems that after the device is operated for a long time, the position of the device can be deviated, a flange fixed in a structure is easy to damage, and the device cannot be well and stably applied to actual layout. In order to achieve the purpose, the invention provides the following technical scheme:

a non-negative pressure water supply system for supplying water comprises a pressure stabilizing tank body, a pressure pump and a variable frequency control cabinet which are connected with a tap water pipe;

the pressure stabilizing tank body, the pressure pump and the variable frequency control cabinet are communicated through various connecting pipes, the various connecting pipes are movably connected through a pipeline connecting structure, and safety limiting is performed by using a limiting structure;

wherein, two ends of the pipeline connecting structure are respectively provided with a connector structure for movably connecting a connecting pipe; the connector structure is provided with an outer pipe II, an inner pipe is arranged in the outer pipe II in a ball-joint mode, the connector structure is communicated with the connecting pipe through the inner pipe to complete water flowing, and the connector structure is in elastic sealing connection with the connecting pipe through the outer pipe II; the inner pipe is in spherical hinge with the outer pipe II by utilizing a hinge ball, so that multi-angle adjustment is completed under the condition of not influencing water supply; the inner tube outside the hinged ball is sleeved with an elastic pad, the elastic pad is connected to the outer tube II at one side far away from the inner tube, and the elastic pad is integrally utilized to adapt to vibration in operation.

When a plurality of non-negative pressure water supply equipment are actually installed, when a design drawing and an actual geographic environment have slight access, the inner pipe is in spherical hinge connection with the outer pipe II by utilizing the hinge ball fixed on the inner pipe, so that multi-angle adjustment is completed under the condition of not influencing water flowing, the small-range position adjustment of the non-negative pressure water supply equipment during actual installation is adapted, other pipelines cannot be replaced or manufactured again, and the spherical hinge connection of the outer pipe II and the inner pipe is also adapted to other conditions which can slightly deviate; the elastic pad sets up between inner tube and outer tube II, has realized that the inner tube utilizes articulated ball angle adjustment to remove the back and resumes original position to and accomplish the condition that does not have negative pressure water supply equipment and utilize the vibrations of elastic pad adaptation in the operation, avoided the connecting pipe because receive long-term vibrations and impaired condition in the junction, solved traditional fixed structure's flange easily impaired and can not be fine stable practical layout scheduling problem.

In the scheme of the non-negative-pressure water supply system for supplying water, a spherical hinge cavity for placing a hinge ball is formed in the outer pipe II, and a placing cavity for placing an elastic cushion is formed in the outer pipe II outside the spherical hinge cavity; the outer tube II is provided with a fixing ring at one end far away from the placing cavity, and the limiting structure is provided with a plurality of movable connections which are distributed on the fixing ring and used for carrying out safe limiting connecting tubes and pipeline connecting structures.

An outer cushion is arranged on the elastic cushion and made of elastic material, a through hole is formed in the outer cushion, and the inner pipe is sleeved with the through hole; the outer cushion is connected with an elastic ring which is sleeved on the inner pipe;

the elastic ring is provided with an outer limiting ring, the inner side of the outer limiting ring is provided with a plurality of elastic telescopic rod structures distributed in an annular array, and the plurality of elastic telescopic rod structures distributed in the annular array are abutted against the inner pipe;

the limiting structure is a safety pin, the safety pin is inserted into the fixing ring, the fixing ring is provided with a safety buckle in a matched mode, the safety pin is buckled on the fixing ring through the safety buckle, and the safety pin is pushed to be opened and removed to complete the activity insertion of the safety pin on the fixing ring.

In the scheme of the non-negative pressure water supply system for supplying water, the connector structure is characterized in that an outer elastic sealing connecting piece is connected to the pipeline connecting structure in a mode of elastic sealing connection between the outer pipe II and the connecting pipe; the outer elastic sealing connecting piece is provided with a fastening ring which is sleeved on the connecting pipe and locked by a clamp; an elastic connecting belt is arranged on the outer elastic sealing connecting piece, the elastic connecting belt is in a round table shape, one end of the elastic connecting belt is connected to the fastening ring, and the other end of the elastic connecting belt is connected to the outer pipe II; one end of the outer elastic sealing connecting piece is connected to the connecting pipe through the fastening ring, and the other end of the outer elastic sealing connecting piece is connected to the outer pipe II to complete elastic sealing connection.

In the scheme of the non-negative pressure water supply system for supplying water, the pipeline connecting structure is provided with a pressure reducing connecting pipe, and two ends of the pressure reducing connecting pipe are respectively used for fixing the connector structures at two sides; the pressure reducing connecting pipe is fixed with a spare water pipe which is communicated with the inner pipe, the inner pipe is provided with a spare water port which is used for communicating the spare water pipe, and the water port is provided with an electromagnetic valve.

The spare water service pipe is internally provided with a filter element for filtering falling debris in the pipeline loss.

The pressure reducing connecting pipe is provided with an outer pipe I, an elastic connecting hose is inserted into the outer pipe I, and two ends of the elastic connecting hose are respectively fixed with a connecting ring and are communicated with the inner pipe through the connecting rings; a plurality of rows of elastic telescopic structures distributed in an annular array are arranged in the outer pipe I on the outer side of the elastic connecting hose;

the elastic telescopic structures distributed in the annular array in multiple rows are densely paved on the surface of the elastic connecting hose by utilizing the limiting plates arranged on the elastic connecting hose, and the cross section of the elastic connecting hose is reduced by utilizing the elastic telescopic structures densely paved on the surface of the elastic connecting hose on the basis that the elastic connecting hose is used for buffering and pressure reduction so as to ensure that the full pipe is communicated and stabilized.

When the water pressure is too high after the pipeline is impacted and the water pressure is unstable, the elastic flexible structure densely paved on the surface of the elastic connecting hose can be utilized to further buffer and reduce the pressure on the basis that the elastic connecting hose is used for buffering and reducing the pressure; when the water pressure is changed, the elastic telescopic structure densely and flatly paved on the surface of the elastic connecting hose extends to reduce the section of the elastic connecting hose so as to ensure the through and pressure stabilization of the full pipe.

Compared with the prior art, the non-negative pressure water supply system for supplying water, disclosed by the invention, has the advantages that when a plurality of non-negative pressure water supply equipment are actually installed, when a design drawing and an actual geographic environment slightly come in and go out, the inner pipe is in spherical hinge connection with the outer pipe II by utilizing the hinge ball fixed on the inner pipe, so that multi-angle adjustment is completed under the condition of not influencing water supply, the small-range position adjustment of the non-negative pressure water supply equipment during actual installation is convenient to adapt, other types of pipelines cannot be replaced or manufactured again, and the spherical hinge connection of the outer pipe II and the inner pipe is also suitable for other conditions which can slightly deviate; the elastic pad sets up between inner tube and outer tube II, has realized that the inner tube utilizes articulated ball angle adjustment to remove the back and resumes original position to and accomplish the condition that does not have negative pressure water supply equipment and utilize the vibrations of elastic pad adaptation in the operation, avoided the connecting pipe because receive long-term vibrations and impaired condition in the junction, solved traditional fixed structure's flange easily impaired and can not be fine stable practical layout scheduling problem.

Drawings

FIG. 1 is a schematic structural view of a non-negative pressure water supply system for supplying water according to the present invention;

FIG. 2 is a schematic structural view of the pipe joint structure of FIG. 1;

FIG. 3 is a schematic structural view of the outer elastomeric sealing joint of FIG. 2;

FIG. 4 is a schematic view of the structure of FIG. 2 with the outer elastomeric sealing joint removed;

FIG. 5 is a schematic view of the structure of the elastic pad of FIG. 4;

FIG. 6 is a schematic diagram of a cross-sectional view of the elastic ring of FIG. 5;

FIG. 7 is a schematic view of the structure of FIG. 4 with the resilient pad removed;

fig. 8 is a schematic cross-sectional view of the connecting head structure in fig. 7;

FIG. 9 is a schematic cross-sectional view of the reduced-pressure connecting tube of FIG. 7;

fig. 10 is a schematic structural diagram of the limiting plate in fig. 9.

In the figure:

1-a pressure stabilizing tank body, 2-a pipeline connecting structure, 3-a connecting pipe, 4-a pressure pump and 5-a variable frequency control cabinet;

21-external elastic sealing connecting piece, 22-standby water pipe, 23-decompression connecting pipe and 24-connector structure;

211-fastening ring, 212-elastic connecting band;

231-a connecting ring, 232-an elastic connecting hose, 233-an elastic telescopic structure, 234-an outer tube I and 235-a limiting plate;

241-elastic cushion, 242-outer tube II, 243-inner tube, 244-safety pin, 245-fixing ring, 246-spherical hinge cavity, 247-hinge ball and 248-spare water port;

2411-external cushion, 2412-elastic ring, 2413-external limit ring, 2414-elastic telescopic rod, 2415-external convex body and 2416-elastic telescopic rod structure.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to specific embodiments. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the embodiment of the invention, as shown in fig. 1, 2, 4, 7 and 8: a non-negative pressure water supply system for supplying water comprises a pressure stabilizing tank body 1, a pressure pump 4 and a variable frequency control cabinet 5 which are connected with a tap water pipe; the pressure stabilizing tank body 1, the pressure pump 4 and the variable frequency control cabinet 5 are communicated through various connecting pipes 3, the various connecting pipes 3 are movably connected through a pipeline connecting structure 2, and safety limiting is performed by using a limiting structure;

the flexible connection of the pipeline connecting structure 2 can be well suitable for the situation that a design drawing and an actual geographic environment have slight access when numerous non-negative pressure water supply equipment are actually installed and distributed, or other situations that slight deviation can occur possibly, the safety limit of the limiting structure is removed after the slight deviation occurs, and the flexible connection of the pipeline connecting structure 2 is realized;

wherein, two ends of the pipeline connecting structure 2 are respectively provided with a connector structure 24 for movably connecting the connecting pipes 3; an outer pipe II 242 is arranged on the connector structure 24, an inner pipe 243 is spherically hinged in the outer pipe II 242, the connector structure 24 is communicated with the connecting pipe 3 through the inner pipe 243 to complete water flowing, and the connector structure 24 is elastically and hermetically connected with the connecting pipe 3 through the outer pipe II 242; the inner pipe 243 is in ball hinge joint with the outer pipe II 242 by utilizing a hinge ball 247, so that multi-angle adjustment is completed under the condition that water is not influenced; the inner pipe 243 outside the hinge ball 247 is sleeved with an elastic cushion 241, the elastic cushion 241 is connected to the outer pipe II 242 at the side far away from the inner pipe 243, and the elastic cushion 241 is used for adapting to vibration in operation integrally.

When a plurality of non-negative pressure water supply equipment are actually installed, when a design drawing and an actual geographic environment have slight access, the inner pipe 243 is in ball hinge connection with the outer pipe II 242 through the hinge ball 247, so that multi-angle adjustment is completed without influencing water passing, the small-range position adjustment of the non-negative pressure water supply equipment in actual installation is adapted, other types of pipelines cannot be replaced or manufactured again, and the ball hinge connection of the outer pipe II 242 and the inner pipe 243 is also adapted to other conditions which can possibly slightly deviate; the elastic pad 241 is arranged between the inner pipe 243 and the outer pipe II 242, so that the inner pipe 243 is restored to the original position after being subjected to angle adjustment removal by the hinge ball 247, the situation that the non-negative-pressure water supply equipment is adapted to vibration in operation by the elastic pad 241 is completed, the situation that the connecting pipe 3 is damaged due to long-term vibration at the joint is avoided, and the problems that a traditional flange with a fixed structure is easy to damage and cannot be well and stably applied to actual layout and the like are solved.

In the embodiment of the present invention, as shown in fig. 7 and 8: a spherical hinge cavity 246 for placing a hinge ball 247 is formed in the outer tube II 242, and a placing cavity for placing an elastic cushion 241 is formed in the outer tube II 242 outside the spherical hinge cavity 246; the fixing ring 245 is arranged at one end, far away from the placing cavity, of the outer pipe II 242, and the limiting structures are provided with a plurality of limiting rings which are distributed on the fixing ring 245 and used for movably connecting the safety limiting connecting pipe 3 with the pipeline connecting structure 2;

the number of the limiting structures is two, three, four or five, and the number of the limiting structures is not limited as long as the limiting structures are distributed on the fixing ring 245 and used for movably connecting the safety limiting connecting pipe 3 and the pipeline connecting structure 2, and the number of the limiting structures is preferably three.

After slight deviation, the safety limit of the limiting structure can be removed, and the flexible connection of the pipeline connecting structure 2 is realized.

In the embodiment of the invention, as shown in fig. 5 and 6: an outer cushion 2411 is arranged on the elastic cushion 241, the outer cushion 2411 is made of an elastic material (wherein the specific type of the elastic material can be elastic rubber, elastic plastic, or other elastic organic matters, and the like, as long as the elastic material has elasticity), a through hole is formed in the outer cushion 2411, and the outer cushion is sleeved on the inner pipe 243 through the through hole; the outer pad 2411 is connected with an elastic ring 2412, and the elastic ring 2412 is sleeved on the inner tube 243; the elastic ring 2412 is provided with an outer limit ring 2413, the inner side of the outer limit ring 2413 is provided with a plurality of elastic telescopic rod structures 2416 distributed in an annular array, and the plurality of elastic telescopic rod structures 2416 distributed in the annular array are abutted against the inner tube 243 (wherein, the number of the plurality of elastic telescopic rod structures 2416 distributed in the annular array can be two, three, four or five, and is not limited, as long as the number of the plurality of elastic telescopic rod structures 2416 distributed in the annular array is abutted against the inner tube 243 in an annular array manner).

After the inner pipe 243 rotates angularly, the inner pipe 243 is restored to the original position after being released by angular adjustment of the hinge ball 247, in the case that the non-negative-pressure water supply equipment vibrates during operation, the inner pipe 243 continuously abuts against the outer pad 2411 and the elastic ring 2412, the outer pad 2411 is utilized, and the elastic telescopic rod structures 2416 distributed in an annular array mode on the elastic ring 2412 are utilized, so that the condition that the non-negative-pressure water supply equipment is adaptive to vibration during operation is completed, and the condition that the connecting pipe 3 is damaged due to long-term vibration at the joint is avoided.

In the embodiment of the present invention, as shown in fig. 6: an elastic telescopic rod 2414 is arranged on the elastic telescopic rod structure 2416, one end of the elastic telescopic rod 2414 is fixed on the outer limiting ring 2413, the other end of the elastic telescopic rod 2414 is fixed with an outer convex body 2415, and the surface of the outer convex body 2415 is smooth (wherein the specific shape of the outer convex body 2415 can be a smooth hemispheroid, a smooth hemiellipsoid, a smooth round table and the like, the specific structure is not limited as long as the outer convex body can be abutted against the inner pipe 243, and the optimized outer convex body 2415 is a smooth hemispheroid; the elastic expansion rod 2414 is abutted against the inner tube 243 by the outer convex body 2415; be equipped with the outer tube on the elasticity telescopic link 2414, buffer spring has been placed to outer tube inside, and buffer spring one end is connected inside the outer tube, and the other end is connected with the interlude pole, and the activity of interlude pole alternates inside the outer tube.

The elastic telescopic rod 2414 is in the flexible in-process of elasticity, inside the outer tube was entered into in the activity interlude of interlude pole to utilize buffer spring to carry out the elastic buffering, realize that elasticity is flexible, and the outer tube is inside to be provided with the safety lever, is used for avoiding buffer spring to be extrudeed by the transition and impaired.

In the embodiment of the present invention, as shown in fig. 7: the limiting structure is a safety pin 244, the safety pin 244 is inserted in a fixing ring 245, a safety buckle is arranged on the fixing ring 245 in a matched mode with the safety pin 244, the safety pin 244 is arranged on the fixing ring 245 through the safety buckle, the safety pin 244 is pushed to be ejected out to remove the safety buckle, and then the safety pin 244 is movably inserted in the fixing ring 245.

Many no negative pressure water supply equipment have the condition of slight discrepancy with actual geographical environment when actual installation distributes, perhaps other probably for can taking place the condition of slight skew, have been relieved safety pin 244 on the limit structure after taking place slight skew and have utilized the safety spacing of safety knot at solid fixed ring 245, extrude safety pin 244 to push away and accomplish safety pin 244 activity after relieving the safety knot promptly and alternate on solid fixed ring 245, realized the nimble of pipeline connection structure 2 and connected.

In the embodiment of the invention, as shown in fig. 2-4: the connector structure 24 is characterized in that an outer elastic sealing connecting piece 21 is connected to the pipeline connecting structure 2 in a mode of elastic sealing connection between the outer pipe II 242 and the connecting pipe 3; the outer elastic sealing connecting piece 21 is provided with a fastening ring 211, and the fastening ring 211 is sleeved on the connecting pipe 3 and locked by a hoop; an elastic connecting belt 212 is arranged on the outer elastic sealing connecting piece 21, the elastic connecting belt 212 is in a circular truncated cone shape, one end of the elastic connecting belt 212 is connected to the fastening ring 211, and the other end of the elastic connecting belt 212 is connected to the outer pipe II 242; one end of the outer elastic sealing connecting piece 21 is connected to the connecting pipe 3 through the fastening ring 211, and the other end is connected to the outer pipe II 242 to complete elastic sealing connection.

The inner pipe 243 is in ball hinge joint with the outer pipe II 242 by utilizing a hinge ball 247, so that multi-angle adjustment is completed under the condition of not influencing water flowing, and the small-range position adjustment of non-negative-pressure water supply equipment during actual installation is adapted; and then in the process that the connecting pipe 3 is in ball joint with the outer pipe II 242 by using the inner pipe 243, the elastic sealing connection is completed through the outer elastic sealing connecting piece 21, so that the problem that the connecting pipe cannot be normally used due to the fact that external impurities enter between the joint ball 247 and the outer pipe II 242 to increase friction force is avoided.

In the embodiment of the present invention, as shown in fig. 7 and 8: the pipeline connecting structure 2 is provided with a pressure reducing connecting pipe 23, and two ends of the pressure reducing connecting pipe 23 are respectively used for fixing the connector structures 24 on two sides; the pressure reducing connection pipe 23 is fixed with a backup water passage pipe 22, the backup water passage pipe 22 is communicated with the inner pipe 243, the inner pipe 243 is opened with a backup water passage port 248 for communicating the backup water passage pipe 22, and the water passage port 248 is provided with an electromagnetic valve. The spare water pipe 22 is provided with a filter element therein for filtering falling debris in the pipe loss.

In the case of unstable water pressure caused by impact on the pipeline, particularly in the early installation process or during maintenance during use, the equipment is inevitably transported, and occasionally impact on the pipeline occurs during transportation, and further, the unstable water pressure caused by impact on the pipeline occurs, and further, in the embodiment of the present invention, as specifically shown in fig. 7, 9 and 10:

the pressure reducing connecting pipe 23 is provided with an outer pipe I234, an elastic connecting hose 232 is inserted into the outer pipe I234, two ends of the elastic connecting hose 232 are respectively fixed with a connecting ring 231, and the elastic connecting hose is communicated with the inner pipe 243 through the connecting rings 231; a plurality of rows of elastic telescopic structures 233 which are distributed in an annular array are arranged in the outer pipe I234 on the outer side of the elastic connecting hose 232; the elastic telescopic structures 233 distributed in a ring array in multiple rows are densely paved on the surface of the elastic connecting hose 232 by using the limiting plates 235 arranged on the elastic connecting hose 232, and the cross section of the elastic connecting hose 232 is reduced by extending the elastic telescopic structures 233 densely paved on the surface of the elastic connecting hose 232 on the basis that the elastic connecting hose 232 is used for buffering and pressure reduction so as to ensure the through and pressure stabilization of full pipes.

After the situation that the water pressure is unstable due to impact on the pipeline is faced, when the water pressure is too high, the elastic telescopic structure 233 densely paved on the surface of the elastic connecting hose 232 can be used for further buffering and pressure reduction on the basis that the elastic connecting hose 232 is used for buffering and pressure reduction; when the water pressure is changed, the elastic telescopic structure 233 densely and flatly laid on the surface of the elastic connecting hose 232 extends to reduce the cross section of the elastic connecting hose 232 so as to ensure the full pipe penetration and pressure stabilization.

The working principle of the invention is as follows: when a plurality of non-negative pressure water supply equipment are actually installed, when a design drawing and an actual geographic environment slightly come in and go out, the inner pipe 243 is in ball hinge joint with the outer pipe II 242 by utilizing the hinge ball 247, so that multi-angle adjustment is completed under the condition of not influencing water supply, the position adjustment of the non-negative pressure water supply equipment in a small range is facilitated during actual installation, other types of pipelines are replaced or manufactured again, and the ball hinge joint of the outer pipe II 242 and the inner pipe 243 is also adapted to other conditions which can slightly deviate; the elastic cushion 241 is arranged between the inner pipe 243 and the outer pipe II 242, so that the inner pipe 243 is restored to the original position after the angle adjustment of the hinge ball 247 is removed, and the condition that the non-negative-pressure water supply equipment adapts to vibration in operation by using the elastic cushion 241 is completed, the condition that the connecting pipe 3 is damaged due to long-term vibration at the connecting part is avoided, and the problems that the traditional flange with a fixed structure is easy to damage and cannot be well and stably applied to actual layout and the like are solved;

the adopted technical means is that two ends of the pipeline connecting structure 2 are respectively provided with a connector structure 24 for movably connecting the connecting pipes 3; an outer pipe II 242 is arranged on the connector structure 24, an inner pipe 243 is spherically hinged in the outer pipe II 242, the connector structure 24 is communicated with the connecting pipe 3 through the inner pipe 243 to complete water flowing, and the connector structure 24 is elastically and hermetically connected with the connecting pipe 3 through the outer pipe II 242; the inner pipe 243 is in ball hinge joint with the outer pipe II 242 by utilizing a hinge ball 247, so that multi-angle adjustment is completed under the condition that water is not influenced; the inner pipe 243 outside the hinge ball 247 is sleeved with an elastic cushion 241, the elastic cushion 241 is connected to the outer pipe II 242 at the side far away from the inner pipe 243, and the elastic cushion 241 is used for adapting to vibration in operation integrally.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (9)

1. A non-negative pressure water supply system for supplying water is characterized by comprising a pressure stabilizing tank body, a pressure pump and a variable frequency control cabinet, wherein the pressure stabilizing tank body, the pressure pump and the variable frequency control cabinet are connected to a tap water pipe;

the pressure stabilizing tank body, the pressure pump and the variable frequency control cabinet are communicated through various connecting pipes, the various connecting pipes are movably connected through a pipeline connecting structure, and safety limiting is performed by using a limiting structure;

wherein, two ends of the pipeline connecting structure are respectively provided with a connector structure for movably connecting a connecting pipe; the connector structure is provided with an outer pipe II, an inner pipe is arranged in the outer pipe II in a ball-joint mode, the connector structure is communicated with the connecting pipe through the inner pipe to complete water flowing, and the connector structure is in elastic sealing connection with the connecting pipe through the outer pipe II; the inner pipe is in spherical hinge with the outer pipe II by utilizing a hinge ball, so that multi-angle adjustment is completed under the condition of not influencing water supply; the inner tube outside the hinged ball is sleeved with an elastic pad, the elastic pad is connected to the outer tube II at one side far away from the inner tube, and the elastic pad is integrally utilized to adapt to vibration in operation.

2. A non-negative pressure water supply system for supplying water according to claim 1,

a spherical hinge cavity for placing a hinge ball is formed in the outer tube II, and a placing cavity for placing an elastic cushion is formed in the outer tube II outside the spherical hinge cavity;

the outer tube II is provided with a fixing ring at one end far away from the placing cavity, and the limiting structure is provided with a plurality of movable connections which are distributed on the fixing ring and used for carrying out safe limiting connecting tubes and pipeline connecting structures.

3. A non-negative pressure water supply system for supplying water according to claim 2,

an outer cushion is arranged on the elastic cushion and made of elastic material, a through hole is formed in the outer cushion, and the inner pipe is sleeved with the through hole; the outer cushion is connected with an elastic ring which is sleeved on the inner pipe;

the elastic ring is provided with an outer limiting ring, the inner side of the outer limiting ring is provided with a plurality of elastic telescopic rod structures distributed in an annular array, and the plurality of elastic telescopic rod structures distributed in the annular array are supported against the inner pipe.

4. A non-negative pressure water supply system for supplying water according to claim 3,

the elastic telescopic rod structure is provided with an elastic telescopic rod, one end of the elastic telescopic rod is fixed on the outer limiting ring, the other end of the elastic telescopic rod is fixed with an outer convex body, and the surface of the outer convex body is smooth; the elastic telescopic rod is abutted against the inner pipe by utilizing the outer convex body;

be equipped with the outer tube on the elasticity telescopic link, buffer spring has been placed to outer tube inside, and buffer spring one end is connected inside the outer tube, and the other end is connected with the interlude pole, and the activity of interlude pole alternates inside the outer tube.

5. The water supply system according to claim 2, wherein the limiting structure is a safety pin, the safety pin is inserted into the fixing ring, the fixing ring is provided with a safety buckle in cooperation with the safety pin, the safety pin is fixed to the fixing ring by the safety buckle, and the safety pin is pushed to open the safety buckle, so that the safety pin is movably inserted into the fixing ring.

6. A non-negative pressure water supply system for supplying water according to claim 1,

the connector structure is characterized in that an outer elastic sealing connecting piece is connected to the pipeline connecting structure in a mode of elastic sealing connection between the outer pipe II and the connecting pipe;

the outer elastic sealing connecting piece is provided with a fastening ring which is sleeved on the connecting pipe and locked by a clamp;

an elastic connecting belt is arranged on the outer elastic sealing connecting piece, the elastic connecting belt is in a round table shape, one end of the elastic connecting belt is connected to the fastening ring, and the other end of the elastic connecting belt is connected to the outer pipe II;

one end of the outer elastic sealing connecting piece is connected to the connecting pipe through the fastening ring, and the other end of the outer elastic sealing connecting piece is connected to the outer pipe II to complete elastic sealing connection.

7. A non-negative pressure water supply system for supplying water according to any one of claims 1 to 6,

the pipeline connecting structure is provided with a pressure reducing connecting pipe, and two ends of the pressure reducing connecting pipe are respectively used for fixing the connector structures on two sides;

the pressure reducing connecting pipe is fixed with a spare water pipe which is communicated with the inner pipe, the inner pipe is provided with a spare water port which is used for communicating the spare water pipe, and the water port is provided with an electromagnetic valve.

8. The system of claim 7, wherein the spare water pipe is internally provided with a filter cartridge for filtering debris dropped from the piping loss.

9. A non-negative pressure water supply system for supplying water according to claim 7,

the pressure reducing connecting pipe is provided with an outer pipe I, an elastic connecting hose is inserted into the outer pipe I, and two ends of the elastic connecting hose are respectively fixed with a connecting ring and are communicated with the inner pipe through the connecting rings;

a plurality of rows of elastic telescopic structures distributed in an annular array are arranged in the outer pipe I on the outer side of the elastic connecting hose;

the elastic telescopic structures distributed in the annular array in multiple rows are densely paved on the surface of the elastic connecting hose by utilizing the limiting plates arranged on the elastic connecting hose, and the cross section of the elastic connecting hose is reduced by utilizing the elastic telescopic structures densely paved on the surface of the elastic connecting hose on the basis that the elastic connecting hose is used for buffering and pressure reduction so as to ensure that the full pipe is communicated and stabilized.

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