CN218152441U

CN218152441U - Easy-to-assemble large-flow ball valve

Info

Publication number: CN218152441U
Application number: CN202122573674.9U
Authority: CN
Inventors: 林顺利
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-12-27
Anticipated expiration: 2031-10-25

Abstract

The utility model discloses an easily assemble large-traffic ball valve, including casing and case, the case is spherical core, has seted up water channel in the spherical core, the embedded locating part that is equipped with in the straight portion, valve rod and the cooperation of pegging graft of spherical core, the gland is dismantled in the outer spiral shell of vertical portion, first joint pastes the cooperation with straight portion, and the outer spiral shell of straight portion is equipped with the first side gland spacing in interior with first joint, the first end tip that the second connects pastes the cooperation with the second end of straight portion mutually, and the outer spiral shell of second end tip of above-mentioned straight portion is equipped with the first end tip spacing in interior second side gland with the second joint. Compared with the prior art, adopt the spherical core to make water channel set very big, make the water yield of whole ooff valve far more than the ooff valve that adopts the ceramic valve block, realized large-traffic water outlet mode, simultaneously, the casing adopts the components of a whole that can function independently equipment to form, makes things convenient for the processing of whole ooff valve on the one hand, and on the other hand makes the equipment of ooff valve simple and easy to the dismouting.

Description

Easy-to-assemble large-flow ball valve

Technical Field

The utility model relates to a ooff valve, concretely relates to easily assemble large-traffic ball valve.

Background

The existing switch valve generally comprises a shell, a valve core and a valve rod, wherein the shell is of a hollow structure, one end of the shell is provided with a water inlet, the other end of the shell is provided with a water outlet, the water inlet and the water outlet are on the same straight line, the valve core is installed in the shell, the valve core controls the water yield through two ceramic sheets, one end of the valve rod is connected with the valve core, the other end of the valve rod extends out of the shell, and when the switch valve is applied, the valve rod is rotated to control the on-off of the valve core. The switch valve has small water yield, cannot realize large-flow operation, and the shell is integrally formed and is not easy to assemble.

Accordingly, the present inventors have made extensive studies on the above problems, and as a result, the present invention has been made.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an easily assemble large-traffic ball valve to solve the problem that the flow is little and difficult equipment among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high-flow ball valve easy to assemble comprises a shell and a valve core, wherein the shell is provided with a hollow transverse straight part and a vertical part vertically communicated with the outer side wall of the transverse straight part, two ends of the transverse straight part are open ports, one open port is a water inlet, the other open port is a water outlet, the transverse straight part is provided with a first connector used for pipeline installation at the water inlet and a second connector used for pipeline installation at the water outlet, the valve core is positioned in the transverse straight part, a first end of a valve rod is connected with the valve core, and a second end of the valve rod extends out of the vertical part; the valve core is a spherical core body, a water passing channel communicated with a water inlet and a water outlet is arranged in the spherical core body, the caliber of the water inlet or the water outlet of the transverse straight part is larger than the diameter of the spherical core body, a limiting part in close fit with the spherical chip is embedded in the transverse straight part, a water passing port communicated with the water passing channel in an opposite position is formed in the limiting part, the first end of the valve rod is in inserted fit with the spherical core body, a dismounting gland for pressing the valve rod in the vertical part is installed outside the vertical part, the first end part of the first joint is in fit with the first end part of the transverse straight part, a first side gland for limiting the first end part of the first joint in the inner part is installed outside the first end part of the transverse straight part, the first end part of the second joint is in fit with the second end part of the transverse straight part, and a second side gland for limiting the first end part of the second joint in the inner part is installed outside the second end part of the transverse straight part.

The integrative undergauge section that extends of the first end tip of above-mentioned horizontal straight portion, above-mentioned first joint is the tubular structure, the first end tip that above-mentioned first joint is equipped with first pile clamping ring to the evagination, above-mentioned first pile clamping ring pastes the cooperation with the terminal surface of undergauge section mutually, above-mentioned first side gland is the cavity cylinder of both ends opening form, above-mentioned undergauge section and first side gland screw-thread fit are connected, above-mentioned undergauge section and first pile press the ring to be in first side gland, and integrated into one piece has the confinement ring of pressure on first pile press the ring on the terminal surface of first side gland, first pile clamping ring presss from both sides tightly between confinement ring and undergauge section.

An inner screw tube is arranged in the second end part of the transverse straight part in a screw way, the inner diameter of the inner screw tube is the same as the inner diameter of a second joint, the first end of the inner screw tube is connected with the transverse straight part in a screw way, the second end of the inner screw tube extends out of the transverse straight part, the second joint is of a tubular structure, a second laminating ring is outwards and convexly arranged at the first end part of the second joint, the second laminating ring is in fit with the second end face of the inner screw tube in a clinging way, the second side pressing cover is a hollow cylinder with two open ends, the second side pressing cover is sleeved outside the inner screw tube, the inner screw tube is in threaded fit connection with the second side pressing cover, the second laminating ring is arranged in the second side pressing cover, a blocking ring laminated on the second laminating ring is integrally formed on the end face of the second side pressing cover, and the second laminating ring is clamped between the blocking ring and the inner screw tube.

The limiting part is provided with a first gasket and a second gasket, the first gasket and the second gasket are of circular structures and are vertically embedded in the transverse straight portion, the valve core is clamped between the first gasket and the second gasket, the first gasket is in close fit with the inner end face of the first end of the transverse straight portion, the second gasket is in close fit with the end face of the first end of the inner screw pipe, the first gasket and the second gasket are provided with through openings communicated with the water passing channel, and the through openings are water passing openings.

And filter screens are arranged on the through openings of the first gasket and the second gasket.

The valve rod is provided with an expanding column and a reducing column, the expanding column is arranged in the vertical part, the reducing column is arranged outside the vertical part, the expanding column is in sealing fit through a sealing ring embedded outside the expanding column, one end of the reducing column is embedded into the first end of the expanding column and fixed together through a bolt, the second end of the expanding column extends into the horizontal straight part, a strip-shaped fixture block extending along the diameter direction of the expanding column is convexly arranged in the central area of the second end of the expanding column, and clamping grooves which penetrate through the two sides of the valve core and are used for the strip-shaped fixture block to slide into are concavely arranged on the outer side wall of the valve core.

The disassembly gland is a hollow cylinder with openings at two ends, the disassembly gland is sleeved outside the vertical part and is in threaded connection with the vertical part, a limit lug which is superposed on the end face of the first end of the expanding column is convexly arranged at the port of one end of the disassembly gland, which is positioned on the reducing column, and a through hole for the reducing column to pass through in a tight fit manner is formed in the limit lug.

The first joint and the second joint are both one of a clamping type pipe body, a straight pipe body or an annular pressing type pipe body.

The intelligent control system comprises a flow sensor used for sensing the flow of the water passing channel, a driving motor driving the valve rod to rotate, a control chip controlling the driving motor to work and a control terminal in data transmission communication with the control chip, the control terminal is in wireless communication and bidirectional connection with the control chip, the control terminal is a mobile phone and/or a remote controller, the flow sensor is installed on the valve core and located in the water passing channel, the driving motor is installed outside the shell and is in transmission connection with the valve rod, the input end of the driving motor is electrically connected with the control end of the control chip, and the flow sensor is electrically connected with the input end of the control chip.

The utility model relates to an easily assemble large-traffic ball valve adopts spherical core to make water channel set very big, and the water yield that makes whole ball valve is far more than the ooff valve that adopts the ceramic valve block, has realized large-traffic water outlet mode, and simultaneously, the casing adopts a plurality of parts components of a whole that can function independently equipment to form, makes things convenient for the processing of whole ball valve on the one hand, and on the other hand makes the equipment of ball valve simple and easy dismouting.

Drawings

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

fig. 2 is a schematic cross-sectional view of the present invention;

fig. 3 is a partial perspective view of the present invention.

Detailed Description

The utility model discloses an easily assemble large-traffic ball valve, as shown in fig. 1-3, which comprises a housin 1, case 2 and valve rod 3, casing 1 has the vertical portion 12 that is hollow violently straight portion 11 and is linked together with the outside wall of violently straight portion perpendicularly, the both ends of violently straight portion 11 all are open mouthful, the length direction who uses violently straight portion 11 is left right direction, one of which is spacious to open the mouth and is the water inlet, another is spacious to open the mouth and is the delivery port, the length direction who uses violently straight portion 11 is left right direction, the left side of violently straight portion, right side both ends are the opening form, vertical portion 12 erects on violently straight portion, the hollow space of vertical portion is linked together with the hollow space of violently straight portion, the last port of vertical portion 12 is open form, violently straight portion 11 is located water inlet department and has first joint 4 that is used for pipe-line erection and is located delivery port department and has second joint 5 that is used for pipe-line erection, case 2 is in violently straight portion, the first end and the case of valve rod are connected, the second end of valve rod stretches out outside vertical portion.

The novel innovation point is as follows: the valve core 2 is a spherical core body, namely a circular core body, the spherical core body is internally provided with a water passing channel 21 communicated with a water inlet and a water outlet, namely the spherical core body is internally provided with a strip-shaped channel which extends along the diameter direction of the spherical core body and penetrates through two ends of the diameter of the spherical core body, the strip-shaped channel is the water passing channel 21, the caliber of the water inlet or the water outlet of the transverse part 11 is larger than the diameter of the spherical core body, a limiting part closely matched with the spherical chip is embedded in the transverse part 11, the limiting part is provided with a water passing port communicated with the water passing channel in an alignment way, the first end of the valve rod 3 is matched with the spherical core body in an insertion way, specifically, the valve rod 3 is provided with an expanding column and a reducing column, the expanding column is positioned below the reducing column, the expanding column is positioned in the vertical part 12, the expanding column extends upwards out of the upper port of the vertical part 11, and the expanding column is matched in a sealing way through a sealing ring embedded outside the expanding column, namely, the outer side wall of the expanding column is concavely provided with a closed loop groove, an O-shaped sealing ring is embedded in the closed loop groove, the lower end of the reducing column is embedded in the upper end of the expanding column and is fixed together by a bolt, the lower end part of the expanding column extends into the horizontal straight part 11, a strip-shaped fixture block 31 extending along the diameter direction of the expanding column is convexly arranged at the central area of the lower end part of the expanding column, namely, the front and back direction diameter of the strip-shaped fixture block 31 is matched with the diameter of the expanding column, the front and back direction width is smaller than the diameter of the expanding column, the upper top wall of the valve core 2 is downwards concavely provided with a clamping groove 22 which penetrates through the left side and the right side of the valve core along the left and right direction and is used for sliding the strip-shaped fixture block 31 into the clamping groove, the disassembly and assembly of the valve core and the valve rod can be realized by utilizing the matching of the strip-shaped fixture block and the clamping groove, the bottom surface of the expanding column is positioned outside the clamping groove, so that the strip-shaped fixture block cannot be upwards pulled out after sliding into the clamping groove, so that the valve rod can drive the valve core to rotate circumferentially.

Vertical portion 12 external screw is equipped with and compresses tightly valve rod 3 in the dismantlement gland 61 of vertical portion, it is concrete, it is both ends open-ended hollow cylinder structure to dismantle gland 61, dismantle gland 61 suit outside vertical portion 12 and pass through the mode spiro union of internal and external screw thread with vertical portion 12 together, the upper end port of dismantling gland 61 is inwards convexly equipped with and folds pressure spacing lug 611 on the terminal surface of hole enlargement post upper end, offer the hole that passes that supplies this reducing post tight fit to pass on this spacing lug 611, it is comparatively convenient to utilize this cooperation that passes hole and spacing lug 611 to make the dismantlement of valve rod.

The first end part of the first joint 4 is in fit with the first end part of the transverse straight part 11 in a fitting manner, a first side gland 62 for limiting the first end part of the first joint in the transverse straight part is externally screwed at the first end part of the transverse straight part, the first end part of the second joint 5 is in fit with the second end part of the transverse straight part in a fitting manner, and a second side gland 63 for limiting the first end part of the second joint in the transverse straight part is externally screwed at the second end part of the transverse straight part; specifically, a reducing pipe section 111 integrally extends from a first end (namely, a left end) of the transverse straight part 11, and the inner diameter of the reducing pipe section 111 is smaller than the diameter of the valve core 3, so that the caliber of the reducing pipe section 111 is smaller than the diameter of the valve core 2, the right end port of the transverse straight part 11 is larger than the diameter of the valve core 2, and the valve core can directly slide out from the right end port of the transverse straight part; first joint 4 is the tubular structure, first joint 4's first end tip (right-hand member tip promptly) is equipped with first clamping ring 41 to the evagination, first clamping ring 41 pastes the cooperation with the terminal surface of reducing pipe section 111 (left end terminal surface promptly), first side gland 62 is the cavity cylinder of both ends opening form, reducing pipe section 111 is in first side gland 62 and through the cooperation of internal and external screw thread with first side gland 62 spiro union together, and first clamping ring 41 is in first side gland 62, and integrated into one piece has the clamping ring 621 of pressure stack on first clamping ring on the left end face of first side gland, first clamping ring 41 presss from both sides tightly between the left end terminal surface of clamping ring 621 and reducing pipe section 111.

Similarly, an inner screw tube 112 is screwed into a second end (i.e. a right end) of the transverse straight portion 11, the inner diameter of the inner screw tube 112 is the same as the inner diameter of the second joint 5, the width of the water passage of the valve element is the same, the left end of the inner screw tube 112 is screwed with the transverse straight portion 11 through the matching of the internal thread and the external thread, the right end of the inner screw tube 112 extends out of the right end of the transverse straight portion 11, the second joint 5 is a tubular structure, a second overlap ring 51 is convexly arranged outwards at the first end (left end) of the second joint 5, the second overlap ring 51 is fitted and matched with the right end surface of the inner screw tube 112, the second side gland 63 is a hollow cylinder with two open ends, the second side gland 63 is sleeved outside the right end of the inner screw tube 112, the right end of the second side gland 112 is screwed with the second side gland 63 through the matching of the internal thread and the external thread, the second overlap ring 51 is located in the second side gland 63, and the second side gland 63 is integrally formed with a stop ring 631 laminated on the right end surface of the second side gland 63; the valve core can be disassembled and assembled by utilizing the first side gland and the second side gland, and the first joint and the second joint are easy to replace.

The limiting member is provided with a first gasket 71 and a second gasket 72, the first gasket 71 and the second gasket 72 are both in a circular structure and are vertically embedded in the transverse straight portion 11, the valve core 2 is clamped between the first gasket 71 and the second gasket 72, the first gasket 71 is in close fit with the inner end face of the left end portion of the transverse straight portion 11, the first gasket and the second gasket are preferably rubber or silica gel gaskets, namely the first gasket 71 is positioned in the left end port of the transverse straight portion 11, the right end face of the reduced diameter pipe section 111 on the transverse straight portion 11 is in close fit, the second gasket 72 is in close fit with the left end face of the internal pipe 112, through holes communicated with the water channels are formed in the first gasket 71 and the second gasket 72, the through holes are the water through holes, namely the through holes of the first gasket 71, the through holes of the second gasket 72, the water through holes of the valve core, the reduced diameter pipe section 111, the internal pipe 112, the first joint 4 and the second joint 5 are matched to form a communicated through hole, and the first gasket and the second gasket can be installed in the valve core 1 and the shell in a detachable mode.

The utility model relates to an easily assemble large-traffic ball valve utilizes spherical case to make the width of water channel can widen along the axial direction of spherical case, the internal diameter of water channel that increases greatly, makes the water yield of whole ooff valve far greater than the ooff valve that adopts the ceramic valve block, has realized large-traffic water outlet mode, simultaneously, whole casing adopts the components to assemble separately and forms, on the one hand makes things convenient for the processing of whole ball valve, on the other hand makes the assembly of ball valve simple and easy, and easy dismouting; in addition, utilize the structure of valve rod and case, can stretch into the straight portion earlier with the lower extreme of valve rod during the equipment in, later the case can make bar fixture block 31 realize the equipment of case and valve rod in the card income recess 22 of inserting the case along the left side shift of case when stretching into from the right-hand member opening of straight portion, direct stretch into the case of pushing right from the left end portion of straight portion can realize the split of valve rod and case when dismantling the case, make the equipment of case and valve rod very simple and easy, the change of easy case, and the setting up of first gasket and second gasket has guaranteed the leakproofness of whole casing on the one hand, on the other hand has guaranteed the firm installation of case.

Preferably, the first joint 4 and the second joint 5 are clamping type pipe bodies or ring pressing type pipe bodies, and the switching valve and the water pipe are more firmly installed by adopting the clamping type pipe bodies or the ring pressing type pipe bodies.

Preferably, the first joint and the second joint are straight pipe bodies, and the straight pipe bodies are adopted to facilitate the disassembly of the water pipe on the switch valve.

It is excellent, install the filter screen on the opening of first gasket 71 and second gasket 72, utilize this filter screen can filter water, make the ooff valve carry out filtering capability, whole casing adopts the assembled simultaneously, can regularly clear up the filter screen.

Preferably, the novel large-flow ball valve further comprises an intelligent control system, the intelligent control system comprises a flow sensor for sensing the flow of the water channel, a driving motor for driving the valve rod to rotate, a control chip for controlling the driving motor to work and a control terminal in data transmission communication with the control chip, the control terminal is in wireless communication bidirectional connection with the control chip, the control terminal is a mobile phone and/or a remote controller, the flow sensor is installed on the valve core and is positioned in the water channel, the driving motor is installed outside the shell and is in transmission connection with the valve rod, the driving motor can be in direct transmission connection with the valve rod, if the driving motor is directly vertically arranged at the top of the valve rod, the output shaft of the driving motor is vertically arranged downwards and is fixedly connected with the top of the valve rod, a transmission mechanism can also be adopted for transmission connection, if the driving motor is horizontally arranged, and the output shaft of the driving motor is positioned outside the front side or the rear side of the valve rod, a driving gear is sleeved outside the output shaft of the driving motor, a driven gear meshed with the driving gear is sleeved outside the upper end of the valve rod, and thus, the driving motor can drive the mechanical valve rod to rotate through the driving gear and the driven gear.

The input end of the driving motor is electrically connected with the control end of the control chip, and the flow sensor is electrically connected with the input end of the control chip; this whole intelligent control system's control principle is known, during the application, sense the flow of casing water-logging through flow sensor, and data transmission to control chip to sensing, control chip handles data, and send for on the APP of cell-phone or on the remote controller through the internet, what kind of state (open or close) the ooff valve was in then can be looked into to the APP of cell-phone or the remote controller this moment, when needing to close the ooff valve when using, press the close key on cell-phone APP or remote controller, and send this signal for control chip, control chip receives this signal after control driving motor rotates, driving motor drives the valve rod and rotates, the valve rod drives the case and rotates, make the through-hole of case shutoff first gasket and second gasket, realize closing of ooff valve, otherwise can realize opening of ooff valve, it realizes remote control, the operation to the ball valve when the person of facilitating the use goes out or when being at home from the ooff valve long-distance, intelligent control.

The above embodiments and drawings do not limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. A high-flow ball valve easy to assemble comprises a shell and a valve core, wherein the shell is provided with a hollow transverse straight part and a vertical part vertically communicated with the outer side wall of the transverse straight part, two ends of the transverse straight part are open ports, one open port is a water inlet, the other open port is a water outlet, the transverse straight part is provided with a first connector used for pipeline installation at the water inlet and a second connector used for pipeline installation at the water outlet, the valve core is positioned in the transverse straight part, a first end of a valve rod is connected with the valve core, and a second end of the valve rod extends out of the vertical part; the method is characterized in that: the valve core is a spherical core body, a water passing channel communicated with a water inlet and a water outlet is arranged in the spherical core body, the caliber of the water inlet or the water outlet of the transverse straight part is larger than the diameter of the spherical core body, a limiting part in close fit with the spherical chip is embedded in the transverse straight part, a water passing port communicated with the water passing channel in an opposite position is formed in the limiting part, the first end of the valve rod is in inserted fit with the spherical core body, a dismounting gland for pressing the valve rod in the vertical part is installed outside the vertical part, the first end part of the first joint is in fit with the first end part of the transverse straight part, a first side gland for limiting the first end part of the first joint in the inner part is installed outside the first end part of the transverse straight part, the first end part of the second joint is in fit with the second end part of the transverse straight part, and a second side gland for limiting the first end part of the second joint in the inner part is installed outside the second end part of the transverse straight part.

2. An easy-to-assemble high flow ball valve according to claim 1, wherein: the integrative extension of the first end tip of above-mentioned horizontal straight portion has the undergauge section, above-mentioned first joint is the tubular structure, the first end tip of above-mentioned first joint is equipped with first clamping ring to the evagination, above-mentioned first clamping ring pastes the cooperation with the terminal surface of undergauge section mutually, above-mentioned first side gland is the cavity cylinder of both ends opening form, above-mentioned undergauge section and first side gland screw-thread fit are connected, above-mentioned undergauge section and first pressure ring of overlying are in first side gland, and integrated into one piece has the confinement ring of overlying on first pressure ring on the terminal surface of first side gland, first pressure ring clamp is pressed from both sides tightly between confinement ring and undergauge section.

3. An easy-to-assemble high flow ball valve according to claim 1 or 2, wherein: an inner screw tube is arranged in the second end part of the transverse straight part in a screw way, the inner diameter of the inner screw tube is the same as the inner diameter of a second joint, the first end of the inner screw tube is connected with the transverse straight part in a screw way, the second end of the inner screw tube extends out of the transverse straight part, the second joint is of a tubular structure, a second laminating ring is outwards and convexly arranged at the first end part of the second joint, the second laminating ring is in fit with the second end face of the inner screw tube in a clinging way, the second side pressing cover is a hollow cylinder with two open ends, the second side pressing cover is sleeved outside the inner screw tube, the inner screw tube is in threaded fit connection with the second side pressing cover, the second laminating ring is arranged in the second side pressing cover, a blocking ring laminated on the second laminating ring is integrally formed on the end face of the second side pressing cover, and the second laminating ring is clamped between the blocking ring and the inner screw tube.

4. An easy-to-assemble high flow ball valve according to claim 3, wherein: the limiting part is provided with a first gasket and a second gasket, the first gasket and the second gasket are of circular structures and are vertically embedded in the transverse straight part, the valve core is clamped between the first gasket and the second gasket, the first gasket is in close fit with the inner end face of the first end of the transverse straight part, the second gasket is in close fit with the first end face of the inner screw pipe, the first gasket and the second gasket are provided with through holes communicated with the water passing channel, and the through holes are water passing holes.

5. An easy-to-assemble high flow ball valve according to claim 4, wherein: and filter screens are arranged on the through openings of the first gasket and the second gasket.

6. An easy-to-assemble high flow ball valve according to claim 2, wherein: the valve rod is provided with an expanding column and a reducing column, the expanding column is arranged in the vertical part, the reducing column is arranged outside the vertical part, the expanding column is in sealing fit through a sealing ring embedded outside the expanding column, one end of the reducing column is embedded into the first end of the expanding column and fixed together through a bolt, the second end of the expanding column extends into the horizontal straight part, a strip-shaped fixture block extending along the diameter direction of the expanding column is convexly arranged in the central area of the second end of the expanding column, and clamping grooves which penetrate through the two sides of the valve core and are used for the strip-shaped fixture block to slide into are concavely arranged on the outer side wall of the valve core.

7. An easy-to-assemble high flow ball valve according to claim 6, wherein: the disassembly gland is a hollow cylinder with openings at two ends, the disassembly gland is sleeved outside the vertical part and is in screwed connection with the vertical part, a limit lug which is overlapped on the end face of the first end of the diameter expansion column is convexly arranged at the port of one end of the disassembly gland, and a through hole for the diameter expansion column to tightly fit and pass through is formed in the limit lug.

8. An easy-to-assemble high flow ball valve according to claim 1, wherein: the first joint and the second joint are both one of a clamping type pipe body, a straight pipe body or a ring pressing type pipe body.

9. An easy-to-assemble high flow ball valve according to claim 1, wherein: the intelligent control system comprises a flow sensor used for sensing the flow of the water channel, a driving motor driving the valve rod to rotate, a control chip controlling the driving motor to work and a control terminal communicating with the control chip in a data transmission mode, the control terminal is in wireless communication and bidirectional connection with the control chip, the control terminal is a mobile phone and/or a remote controller, the flow sensor is installed on the valve core and located in the water channel, the driving motor is installed outside the shell and connected with the valve rod in a transmission mode, the input end of the driving motor is electrically connected with the control end of the control chip, and the flow sensor is electrically connected with the input end of the control chip.