CN113137377A

CN113137377A - Back flush valve of prefabricated pump

Info

Publication number: CN113137377A
Application number: CN202110448744.XA
Authority: CN
Inventors: 吕亚军; 吕夏娥; 魏成涛; 胡淑敏; 汤升华; 吕增东; 王刚; 喻剑飞; 李晓燕; 吕淼淼
Original assignee: Sino American AITI Pump Group Co Ltd
Current assignee: Sino American AITI Pump Group Co Ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-07-20
Anticipated expiration: 2041-04-25
Also published as: CN113137377B

Abstract

The invention discloses a back flush valve of a prefabricated pump, and relates to the technical field of prefabricated pump stations. The method comprises the following steps: the water inlet main pipe is arranged in the cylinder body of the prefabricated pump; the valve body is communicated with the interior of the cylinder of the prefabricated pump through the water inlet main pipe; the water inlet branch pipe is connected to the valve body and communicated with the interior of the valve body, and the other end of the water inlet branch pipe is connected with the submersible pump; the shunt branch pipe is connected to the valve body and communicated with the interior of the valve body, and the other end of the shunt branch pipe is arranged at the bottom of the cylinder of the prefabricated pump; the one-way valve is arranged in the shunt branch pipe to ensure that the fluid in the shunt branch pipe can only flow in one direction; and the valve core is rotatably arranged in the valve body, and when the valve core rotates, the water flowing into the water inlet main pipe is divided into the water inlet branch pipe and the branch flow pipe. The invention provides a device for stirring sewage in a cylinder and washing the bottom of the cylinder by causing sewage backflow when sewage is pumped, so that impurities and the sewage are discharged out of a prefabricated pump together.

Description

Back flush valve of prefabricated pump

Technical Field

The invention relates to the technical field of prefabricated plate stations, in particular to a back flush valve of a prefabricated pump.

Background

The prefabricated pump is used for lifting urban sewage and rainwater and then entering the next treatment process, and the sewage and the rainwater are evolved and recycled. The integrated prefabricated pump station comprises a top cover, a glass fiber reinforced plastic cylinder, a submersible pump, a service platform, a pipeline, an electric appliance control system, a ventilation system and an overhaul system.

The prefabricated pump is installed in the pump hole, can deposit silt, small-size particle diameter impurity in the barrel after long-time the use to influence the regular clearance of prefabricated pump and also shortened the life-span of prefabricated pump station. Some in the prior art have already explored how to solve this problem, such as the following: CN 110513491B, a patent named as a backwash valve of a prefabricated pump station; the name of the patent is CN 106013408B, which is a patent of an automatic slag-discharging integrated intelligent prefabricated pump station. The submersible pump of the prefabricated pump in the above two patents cannot stir the water in the cylinder body during drainage so as to prevent sludge deposition in the sewage, and still needs additional equipment or manual work to discharge the sludge and impurities deposited in the sewage.

Therefore, in order to solve the above technical problem, a new technical solution needs to be proposed to solve the problem. In particular to a back flush valve of a prefabricated pump.

Disclosure of Invention

The invention provides a back flush valve of a prefabricated pump, which aims to solve the technical problems that the existing prefabricated pump in the market cannot stir sewage in a cylinder body when in use and sludge in the cylinder body is gradually deposited and difficult to discharge after long-time use.

The following technical scheme is provided for achieving the purpose: a backwash valve of a prefabricated pump comprising:

the water inlet main pipe is arranged in the cylinder body of the prefabricated pump;

the valve body is communicated with the interior of the cylinder of the prefabricated pump through a main water inlet pipe;

the water inlet branch pipe is connected to the valve body and communicated with the interior of the valve body, and the other end of the water inlet branch pipe is connected with a submersible pump;

the shunt branch pipe is connected to the valve body and communicated with the interior of the valve body, and the other end of the shunt branch pipe is arranged at the bottom of the cylinder of the prefabricated pump;

the one-way valve is arranged in the shunt branch pipe, so that the fluid in the shunt branch pipe can only flow in one direction;

and the valve core is rotatably arranged in the valve body, and when the valve core rotates, the water flowing into the water inlet main pipe is divided into the water inlet branch pipe and the branch flow pipe.

Preferably, the water inlet main pipe is communicated with the valve body through a transition hose.

Preferably, the water inlet device further comprises a floating ball, and the floating ball is connected with the end part of the water inlet main pipe through a fixing band.

Preferably, the valve body comprises a shell, and the shell is provided with a water inlet, a water inlet branch port and a flow dividing branch port; a water inlet channel is arranged in the water inlet main pipe and is communicated with the valve body through the water inlet; a water inlet branch channel is arranged in the water inlet branch pipe and is communicated with the valve body through the water inlet branch port; and a shunt branch passage is arranged in the shunt branch pipe and is communicated with the valve body through the shunt branch port.

Preferably, the diameter of the water inlet channel is larger than the diameters of the water inlet branch channel and the flow dividing branch channel.

Preferably, a hollow accommodating cavity is formed in the shell, the valve core is installed in the accommodating cavity and matched with the accommodating cavity, and water flow is sent into the valve body in a segmented mode when the valve core rotates.

Preferably, the valve core is connected with a plurality of blades, and the radian of the intervals between the blades is larger than the sum of the radian of the opening of the water inlet branch port and the interval between the water inlet branch port and the flow dividing branch port.

Preferably, the cross sections of the shell and the valve core are circular, and the valve core is arranged at the center of the circle of the shell.

Preferably, four blades are uniformly distributed outside the valve core, the four blades are respectively tangent to the appearance of the valve core, and the area among the blades is 1/4 of the cross section of the shell.

Preferably, the arc length of the opening of the water inlet branch port is 1/6 to 1/5 of the perimeter of the shell, and the arc length of the opening of the branch flow port is the same as that of the branch flow port.

Preferably, the one-way valve is of a funnel-shaped structure, the open end of the funnel of the one-way valve is connected with the pipe wall of the branch flow pipe in a sealing mode, and the leakage port end faces the bottom of the cylinder body of the prefabricated pump.

Preferably, the one-way valve comprises a first side film and a second side film which are mutually connected in a surrounding way, and the first side film and the second side film of the leakage end are mutually attached.

Preferably, the first/second side membrane at the one-way valve port is linear and the second/first side membrane is arc-shaped.

Preferably, the one-way valve is made of a corrosion-resistant material.

Preferably, the main water inlet pipe, the branch water inlet pipes and the branch flow pipes are made of corrosion-resistant metal materials.

The invention has the beneficial effects that: the rotation through the immersible pump causes the negative pressure in to the valve body, thereby make the case rotate, inhale the water in the barrel to the valve body in, the blade through the case sends into the valve body in with a water in the barrel in succession, when the blade rotates to intake branch mouthful and reposition of redundant personnel branch mouthful top, the sewage that brings in the blade can get into respectively into the branch way of intaking and reposition of redundant personnel branch way, the kinetic energy of sewage struts one-way valve and flows back to in the barrel once more, thereby make the outer partly backward flow of barrel bottom of the prefabricated pump station of inspiratory water of immersible pump, cause the circulatory flow of sewage at the barrel bottom. During drainage, sludge deposited at the bottom of the cylinder body is stirred, so that the sludge and impurities cannot be deposited and are discharged after being pumped into the water inlet main pipe by the submersible pump.

The floater control is intake and is responsible for the height in the barrel, and when the water level in the barrel descends, the main pipe that intakes descends equally to all draw from the bottom of barrel when drawing water each time.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

1. A main water inlet pipe; 11. a water inlet channel; 2. fixing belts; 3. a floating ball; 4. a valve body; 40. a housing; 41. a water inlet; 42. an accommodating chamber; 43. a water inlet branch port; 44. a branch flow port; 5. a water inlet branch pipe; 51. a water inlet branch channel; 6. a branch pipe; 61. shunting branch channels; 7. a transition hose; 8. a valve core; 81. a blade; 9. a one-way valve; 91. a first side film; 92. a second side film.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships in which the products of the present invention are conventionally placed when used, and are merely used for convenience of describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1, a backwash valve of a pre-pump includes: the water inlet valve comprises a main water inlet pipe 1, a valve body 4, a branch water inlet pipe 5, a branch flow pipe 6, a valve core 8 and a one-way valve 9. The water inlet main pipe 1 is arranged in a barrel of a prefabricated pump, the valve body 4 is communicated with the interior of the barrel of the prefabricated pump through the water inlet main pipe 1, the water inlet branch pipe 5 is connected to the valve body 4, the water inlet branch pipe 5 is communicated with the interior of the valve body 4, the submersible pump is connected to the other end of the water inlet branch pipe 5, the shunt branch pipe 6 is connected to the valve body 4, the shunt branch pipe 6 is communicated with the interior of the valve body 4, the other end of the shunt branch pipe 6 is arranged at the bottom of the barrel of the prefabricated pump station, the check valve 9 is arranged in the shunt branch pipe 6, fluid in the shunt branch pipe 6 can only flow in a single direction, the valve core 8 is rotatably arranged in the valve body 4, and the valve core 8 is rotated and then the water flowing into the water inlet main pipe 1 flows to the water inlet branch pipe 5 and the shunt branch pipe 6.

As shown in fig. 2, in particular, the valve body 4 includes a housing 40, and the housing 40 is provided with a water inlet 41, a water inlet branch 43 and a branch flow port 44. Be equipped with inlet channel 11 in the person in charge of intaking 1, inlet channel 11 with water inlet 41 communicates, be equipped with into water branch 51 in the branch pipe of intaking 5, intake branch 51 with intake branch 43 communicates, be equipped with reposition of redundant personnel branch 61 in the branch pipe of reposition of redundant personnel 6, reposition of redundant personnel branch 61 with reposition of redundant personnel branch 44 communicates. The casing 40 is internally provided with a hollow accommodating cavity 42, the valve core 8 is installed in the accommodating cavity 42, the valve core 8 is connected with a plurality of blades 81, the radian of the interval between the blades 81 is larger than the sum of the opening radian of the water inlet branch port 43 and the interval between the water inlet branch port 43 and the shunt branch port 44, and the corresponding space between the blades is simultaneously positioned on the water inlet branch port and the shunt branch port when the blades rotate. In the embodiment, the number of the blades is 4, the blades are respectively arranged around the outer circumference of the valve core, and the corresponding sector radians between the blades are arranged above the water inlet branch port and the shunt branch port during rotation, so that water brought by the rotation of the blades can flow into the water inlet branch channel and the shunt branch channel. The diameter of the water inlet channel 11 is larger than the diameters of the water inlet branch channel 51 and the branch flow channel 61, so that after water in the water inlet channel enters the water inlet branch channel and the branch flow channel with small diameters from the water inlet channel with large diameters, the flow velocity of the fluid can be accelerated due to the narrowing of the pipeline under the condition of the same flow.

The cross sections of the shell 40 and the valve core 8 are circular, the valve core 8 is installed at the center of the circle of the shell 40, the valve core 8 is matched with the accommodating cavity 42, and water flow is sent into the valve body 4 in a segmented mode when the valve core 8 rotates. Four blades 81 are uniformly distributed outside the valve core 8, the four blades 81 are respectively tangent to the appearance of the valve core 8, and the area among the blades is 1/4 of the cross section of the shell 40. The opening arc length of the water inlet branch port 43 and the opening arc length of the branch flow port 44 are 1/6-1/5 of the perimeter of the shell. The hydroenergy that the branch mouthful of intaking and reposition of redundant personnel were brought into between the blade when the adjacent setting of branch mouthful and blade rotate enough flows into the branch way of intaking and reposition of redundant personnel simultaneously, simultaneously because the diameter of branch pipe and reposition of redundant personnel branch pipe of intaking reduces, make the velocity of flow of sewage fluid accelerate, the sewage that flows into in the branch way of intaking can discharge fast, the hydroenergy that flows into in the reposition of redundant personnel branch pipe can flow back to the barrel bottom at a high speed, cause the great impact force to the barrel bottom, thereby wash away sedimentary silt, stir the sewage in the barrel, make silt, impurity etc. discharge outside the barrel along with sewage together. Negative pressure when so utilizing the immersible pump to draw water forms the sewage of a share backward flow, through self-loopa, the erodees of sewage, clears up the barrel bottom when the drainage, has avoided the problem that needs artifical regular clearance. The main water inlet pipe, the branch flow dividing pipe, the shell, the valve core, the blades and the like are all made of existing corrosion-resistant metal materials.

One-way valve 9 is hopper-shaped structure, one-way valve 9's funnel open end with the barrel bottom of the pipe wall sealing connection of reposition of redundant personnel branch pipe 6, leak source end orientation prefabricated pump, one-way valve 9 includes that to enclose each other and close first side membrane 91 and the second side membrane 92 of connecting, the first side membrane 91 and the second side membrane 92 of leak source end laminate each other. The two side membranes at the port of the one-way valve are in a linear type and the other side membrane is in an arc type, and when fluid flows into the open end of the funnel, the arc-shaped membranes stretch and open, so that the one-way valve is opened. The specific structure of the membrane may be: the first/

second side films

91, 92 are linear and the second/

first side films

92, 91 are arcuate.

The one-way valve is made of corrosion-resistant plastic materials, when the submersible pump rotates, negative pressure can be introduced from the open end of the funnel of the one-way film and enables the first side film and the second side film of the leakage opening end to be attached tightly, and the first side film and the second side film are attached to each other in a natural state, so that the negative pressure of the submersible pump is attached more and more tightly, and sewage can not flow into the valve body from the branch flow pipe at the bottom of the cylinder when the one-way valve guarantees that water is pumped.

Example two:

on the basis of the first embodiment, the water inlet device further comprises a floating ball 3 and a transition hose 7, wherein the floating ball 3 is connected with the end part of the water inlet main pipe 1 through a fixing belt 2. The water inlet main pipe 1 is communicated with the valve body 4 through a transition hose 7. The floating ball is adopted to automatically control the orientation of the main water inlet pipe according to the height of the liquid level in the cylinder, so that the opening direction of the main water inlet pipe is always positioned at the bottom of the liquid level in the cylinder, and the transition hose is easy to bend and convenient to change the orientation of the main water inlet pipe. The control floater adopts hollow material to make, the floater is connected at the tip of the main pipe of intaking, make the main pipe of intaking's gravity all be used for with the floating force counter-balance of floater, thereby when making the barrel internal water too dark, the upward float degree of difficulty of the main pipe of intaking is greater than its degree of difficulty that descends, thereby guarantee that the main pipe of intaking is changeed towards the barrel bottom, so draw out the sewage of barrel bottom earlier when drawing water, because the water silt content of barrel bottom is the biggest, so can discharge silt as early as possible, reduce the cycle time of silt in the back flush valve.

During installation, the water inlet branch pipe is connected with the water inlet end of the submersible pump, the water inlet main pipe is located in the barrel of the prefabricated pump station, and the floating ball is located in sewage or on the surface of the sewage of the barrel. When the submersible pump in the prefabricated pump station is started, the pumping force of the submersible pump is transmitted into the valve body through the water inlet branch pipe, negative pressure is caused in the valve body, and the negative pressure in the valve body cannot be transmitted into the cylinder body through the shunt branch pipe under the action of the one-way valve, so that fluid in the shunt branch pipe can only flow in a one-way mode. The negative pressure in the valve body can cause the valve core to rotate, sewage in the cylinder body is pumped into the water inlet main pipe and the valve body through the water inlet main pipe, one part of the sewage is fed into the valve body by one part of the blades, the sewage can generate kinetic energy in the pumping process, when sewage among the blades flows to the upper parts of the water inlet branch port and the shunt branch port, part of sewage flows into the submersible pump from the water inlet branch port, thereby being discharged out of the cylinder body of the prefabricated pump station, partial sewage can enter the shunt branch pipe through the shunt branch opening, the first side membrane and the second side membrane at the port of the one-way valve are spread under the kinetic energy and potential energy of the sewage, so that the sewage flows back to the bottom of the cylinder body of the prefabricated pump station through the branch pipe, the part of the backflow fluid can form certain scouring force in the barrel, so that the sludge deposited at the bottom of the barrel is scoured and uniformly mixed in the sewage, and the mixture of the sludge and the sewage is pumped out of the barrel of the prefabricated pump station by the submersible pump in the circulating pumping. The floater is according to the mouth of pipe orientation that the liquid level altitude control of barrel was intake and is responsible for, and the mouth of pipe also descends when making the liquid level decline in the barrel to the relative height that makes mouth of pipe and liquid level is located the bottom of liquid level for the mouth of pipe all the time, and sewage is taken out from relative bottom when making the extraction, and the sewage silt mixed volume of guaranteeing to extract at every turn is the biggest. When the prefabricated pump station pumps sewage, the sewage in the cylinder is stirred by utilizing the self backflow of the sewage, and the bottom of the cylinder is washed, so that sludge and impurities which are to be deposited are discharged out of the prefabricated pump together with the sewage.

The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.

Claims

1. A backwash valve of a prefabricated pump, comprising:

the water inlet main pipe (1), the water inlet main pipe (1) is arranged in the cylinder body of the prefabricated pump;

the valve body (4) is communicated with the interior of the cylinder of the prefabricated pump through a main water inlet pipe (1);

the water inlet branch pipe (5) is connected to the valve body (4), the water inlet branch pipe (5) is communicated with the interior of the valve body (4), and the other end of the water inlet branch pipe (5) is connected with a submersible pump;

the shunt branch pipe (6) is connected to the valve body (4), the shunt branch pipe (6) is communicated with the interior of the valve body (4), and the other end of the shunt branch pipe (6) is arranged at the bottom of a cylinder of the prefabricated pump;

the one-way valve (9) is arranged in the shunt branch pipe (6) to ensure that the fluid in the shunt branch pipe (6) can only flow in one direction;

the valve core (8), the valve core (8) rotate and set up in the valve body (4), when the valve core (8) rotate with the water that water inlet main pipe (1) flows in divide to water inlet branch pipe (5) and reposition of redundant personnel branch pipe (6).

2. The backwash valve of a prefabricated pump as defined in claim 1, wherein: the water inlet main pipe (1) is communicated with the valve body (4) through a transition hose (7).

3. The backwash valve of a prefabricated pump as defined in claim 2, wherein: the water inlet device is characterized by further comprising a floating ball (3), wherein the floating ball (3) is connected with the end part of the water inlet main pipe (1) through a fixing band (2).

4. A backwash valve for a prefabricated pump as claimed in claim 1, 2 or 3, characterized in that: the valve body (4) comprises a shell (40), and a water inlet (41), a water inlet branch port (43) and a flow dividing branch port (44) are formed in the shell (40); a water inlet channel (11) is arranged in the water inlet main pipe (1), and the water inlet channel (11) is communicated with the valve body (4) through the water inlet (41); a water inlet branch channel (51) is arranged in the water inlet branch pipe (5), and the water inlet branch channel (51) is communicated with the valve body (4) through the water inlet branch port (43); be equipped with reposition of redundant personnel branch road (61) in reposition of redundant personnel branch pipe (6), reposition of redundant personnel branch road (61) pass through reposition of redundant personnel branch mouth (44) and valve body (4) intercommunication.

5. The backwash valve of a prefabricated pump as defined in claim 4, wherein: the diameter of the water inlet channel (11) is larger than the diameters of the water inlet branch channel (51) and the flow dividing branch channel (61).

6. The backwash valve of a prefabricated pump as defined in claim 5, wherein: the water-saving valve is characterized in that a hollow containing cavity (42) is formed in the shell (40), the valve core (8) is installed in the containing cavity (42), the valve core (8) is matched with the containing cavity (42), and water flow is sent into the valve body (4) in a segmented mode when the valve core (8) rotates.

7. The backwash valve of a prefabricated pump as defined in claim 6, wherein: the valve core (8) is connected with a plurality of blades (81), and the radian of the distance between the blades (81) is larger than the sum of the opening radian of the water inlet branch port (43) and the interval between the water inlet branch port (43) and the flow dividing branch port (44).

8. The backwash valve of a prefabricated pump as defined in claim 7, wherein: the cross sections of the shell (40) and the valve core (8) are circular, and the valve core (8) is arranged at the circle center of the shell (40).

9. The backwash valve of a prefabricated pump as defined in claim 8, wherein: four blades (81) are uniformly distributed outside the valve core (8), the four blades (81) are respectively tangent to the appearance of the valve core (8), and the area among the blades is 1/4 of the cross section of the shell (40).

10. The backwash valve of a prefabricated pump as defined in claim 9, wherein: the opening arc length of the water inlet branch port (43) and the opening arc length of the flow dividing branch port (44) are 1/6-1/5 of the perimeter of the shell.