CN210228367U - Household tooth flushing device - Google Patents

Abstract

The utility model discloses a household tooth flushing device, which relates to an oral hygiene appliance. The device comprises a hose, a handle, a pressure stabilizing valve, a water separator and two spray heads with water outlets facing to the rear upper part and the front part respectively; the output water pressure of the pressure stabilizing valve is not more than 1.1 kg/square centimeter and is arranged in the handle; one end of the hose is communicated with the tap water pipe, and the other end of the hose is fixed on the handle and communicated with the water inlet of the pressure stabilizing valve; the shell of the water separator is a horizontal straight pipe and is fixed at the front end of the handle, and the pipe wall of the water separator is provided with a water inlet and two water outlets; the water inlet of the shell is communicated with the water outlet of the pressure stabilizing valve; the water inlets of the two nozzles are respectively arranged at the corresponding water outlets on the shell; a left end cover and a right end cover are arranged at two ends of the shell; the push rod penetrates through the shell and the left and right end covers; two pistons are fixedly arranged on the push rod at intervals; the push rod is positioned at the first position, and water does not flow out of the two nozzles; the push rod is shifted to a second position, and the first spray head discharges water; the push rod is shifted to the third position, and the second nozzle discharges water. Tap water can be used to rinse the teeth from front and back.

Description

Household tooth flushing device

Technical Field

The utility model relates to an oral hygiene device, in particular to a household device for washing teeth.

Background

The purpose of cleaning food residues on the surfaces and in the gaps between teeth can be achieved by washing the teeth with water. The tooth surface has a layer of material called as glaze, which can protect the tooth from being excessively sensitive to the cold and hot of food or drinking water. When the pressure of the rinsing water exceeds 1.1 kg/cm, the glaze will be released from the tooth surface. Since the pressure of tap water is unstable, usually ranging from 2 to 20 kg/cm, and even with tap water adjustments, the above-mentioned water pressure limit is often exceeded, it is not possible to directly rinse the teeth with tap water. People design and produce tooth rinsers with stable output water pressure and close to the water pressure limit for public to rinse teeth.

The existing household tooth flushing device comprises basic components such as a water cup, a first hose, a micro water pump, a power supply, a case, a second hose, a handle, a spray nozzle and the like. The micro water pump and the power supply are arranged in the case, and the spray head is arranged on the handle. The water cup is detachably arranged outside the case. One end of the first hose extends into the case and is fixedly communicated with a water inlet of the micro water pump. One end of the second hose is fixed in the case and communicated with a water outlet of the micro water pump. The other end of the second hose is fixed in the handle and communicated with the spray head. Before use, clean water is injected into the water cup, so that the free end of the first hose is inserted into the water cup. The handle is taken up to extend the spray head to the oral cavity. After the power supply supplies power to the micro water pump, the micro water pump runs, clear water in the water cup is extracted through the first hose and then is sent to the spray head through the second hose, and the clear water is sprayed out of the spray head to directly wash teeth of a user.

However, the household tooth irrigator has high cost and is not suitable for the general public. In addition, the existing spray head can only wash the outer side surface (dentognathic surface) of the teeth, but can not wash the inner surface (tooth lingual surface) of the teeth, and the existing spray head still has the regret.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a household tooth flushing device which has simple structure and low cost and can flush the inner and outer surfaces of teeth.

The technical scheme of the utility model is that: the household tooth flushing device is provided with a hose, a handle and a spray head; it also has pressure-stabilizing valve and water separator; the number of the spray heads is two, wherein the water outlet of the first spray head faces to the rear upper part, and the water outlet of the second spray head faces to the front; the output water pressure of the pressure stabilizing valve is not more than 1.1 kg/square centimeter and is arranged in the handle; the free end of the hose is separably communicated with a tap water pipe, and the other end of the hose is fixed on the handle and communicated with the water inlet of the pressure stabilizing valve; the water separator is provided with a shell, a left end cover, a right end cover, a push rod, a first piston and a second piston; the shell is a transverse straight pipe and is fixed at the front end of the handle, and a first water inlet, a first water outlet and a second water outlet which are arranged at intervals are formed in the pipe wall of the shell; the first water inlet of the shell is communicated with the water outlet of the pressure stabilizing valve; the water inlet of the first spray head is arranged at a first water outlet on the shell, and the water inlet of the second spray head is arranged at a second water outlet on the shell; the two ends of the shell are respectively provided with a left end cover and a right end cover which are provided with central holes; the push rod penetrates through the inner hole of the shell and can be slidably arranged in the central holes of the left end cover and the right end cover in a penetrating way; the part of the push rod in the shell is fixedly provided with a first piston and a second piston at intervals from left to right; when the push rod is positioned at the first position, the second piston is positioned between the first water outlet and the second water outlet and blocks the first water inlet of the shell, and the water separator is in a state that the first spray head and the second spray head do not discharge water; when the push rod moves to a second position rightwards, the first water inlet is communicated with the first water outlet in a space between the first piston and the second piston, and the water separator is in a state of water outlet of the first spray head; when the push rod continues to move to the third position, the first piston blocks the first water outlet of the shell, the first water inlet of the shell is communicated with the second water outlet in a space between the first piston and the second piston, and the water separator is in a water outlet state of the second spray head.

The domestic tooth flushing device of the utility model utilizes the pressure stabilizing valve to reduce the pressure of tap water to be not more than 1.1 kg/square centimeter, directly flushes teeth, and solves the problem of protecting the surface of the teeth from being colored glaze; and then the manual water separator with a slide valve structure is utilized, so that water output by the pressure stabilizing valve can be selectively sprayed out from the two spray heads with the water outlet facing to the back upper part or the water outlet facing to the front part, and the invention aims of washing the outer side surface (dentognathic surface) of the tooth and the inner surface (dentognathic surface) of the tooth are fulfilled. Compared with the existing household tooth flushing device, the utility model has the advantages of simple structure, low manufacturing cost and convenient use, and is suitable for popularization in vast ordinary consumers.

In a preferred embodiment: the part of the push rod in the shell is provided with a pressure spring, and two ends of the pressure spring respectively prop against the second piston and the right end cover; three concave grooves are arranged on the right side of the push rod at intervals from the right end part to the left; a convex lug is arranged on the outer end face of the right end cover corresponding to the concave groove of the push rod, and a collision bead is arranged in the convex lug; when the push rod is located at the first position, the first piston is abutted against the left end cover, and the ball on the collision ball is pressed into the first concave groove at the right end part of the push rod; when the push rod is located at the second position, the ball on the collision ball is pressed into a second concave groove on the right side of the push rod; when the push rod is located at the third position, the pressure spring is compressed to the limit, and the ball on the collision ball is pressed into a third concave groove on the right side of the push rod.

A pressure spring and a concave groove are configured for the push rod, a lug is arranged on the outer end face of the right end cover corresponding to the concave groove of the push rod, and a collision bead is arranged in the lug; the water separator can automatically keep positioning at any one of the three positions, and the operation of a user is simpler and more reliable.

In another embodiment: it also has the third shower nozzle that the water outlet faces the back lower place; the water separator is also provided with a third piston which is fixed on the push rod and is positioned on the right side of the second piston at intervals; the pipe wall of the shell is also provided with a second water inlet and a third water outlet, the second water inlet is positioned on the right side of the first water inlet at intervals, the third water outlet is positioned on the right side of the second water outlet at intervals, and the water inlet of the third spray head is arranged in the third water outlet; when the push rod is positioned at the first position, the third piston seals the second water inlet and the third water outlet on the shell, and the third spray head does not spray water outwards; when the push rod is positioned at the second position, the third piston blocks the second water inlet on the shell, and the third spray head does not spray water outwards; when the push rod is positioned at the third position, the third piston blocks the second water inlet on the shell, and the third spray head does not spray water outwards; when the push rod continues to move to the fourth position, the first piston blocks the first water outlet of the shell, the third piston is located on the right side of the second water inlet on the shell, the second water inlet of the shell is communicated with the third water outlet in a space between the second piston and the third piston, and the water separator is in a water outlet state of the third spray head.

In the embodiment, a third spray head with a water outlet facing to the rear lower part is added, a second water inlet and a third water outlet are correspondingly added on the pipe wall of the water separator shell, and a third piston is added on the push rod; the water output by the pressure stabilizing valve can be selectively sprayed out from any one of the three nozzles with the water outlet facing to the rear upper part, the water outlet facing to the front or the water outlet facing to the rear lower part, so that the invention aims of washing the outer side surface (dentognathic surface) of the tooth and the inner surface (dentognathic surface) of the upper tooth or the lower tooth under the condition that the handle is not moved are fulfilled. The use is more convenient.

In a preferred embodiment: the part of the push rod in the shell is provided with a pressure spring, and two ends of the pressure spring respectively prop against the third piston and the right end cover; four concave grooves are arranged on the right side of the push rod at intervals from the right end part to the left; a convex lug is arranged on the outer end face of the right end cover corresponding to the concave groove of the push rod, and a collision bead is arranged in the convex lug; when the push rod is located at the first position, the first piston is abutted against the left end cover, and the ball on the collision ball is pressed into the first concave groove at the right end part of the push rod; when the push rod is located at the second position, the ball on the collision ball is pressed into a second concave groove on the right side of the push rod; when the push rod is located at the third position, the ball on the collision ball is pressed into a third concave groove on the right side of the push rod; when the push rod is located at the fourth position, the pressure spring is compressed to the limit, and the ball on the collision ball is pressed into the fourth concave groove on the right side of the push rod.

The push rod of the embodiment is provided with the pressure spring and the concave groove, the outer end face of the right end cover is provided with the lug corresponding to the concave groove of the push rod, and the lug is internally provided with the collision bead; the water separator can automatically keep positioning at any one of the four positions, and the operation of a user is simpler and more reliable.

In particular: the front part of the pressure stabilizing valve is provided with a water outlet, the rear part of the pressure stabilizing valve is provided with a water inlet, and the middle part of the pressure stabilizing valve is provided with a transverse valve core adjusting screw; the handle is provided with a shell, a front baffle, a rear baffle, a positioning pipe and a rear cover, and an inner flange is arranged in the shell; the water outlet side of the pressure stabilizing valve is sleeved on the front baffle plate in a penetrating manner, the water inlet side of the pressure stabilizing valve is sleeved on the rear baffle plate in a penetrating manner, the pressure stabilizing valve, the front baffle plate and the rear baffle plate are installed into the shell together from the rear side, the front baffle plate is propped against the inner flange, the positioning tube is arranged between the rear side surface of the rear baffle plate and a rear cover for closing the rear end of the shell, and the pressure stabilizing valve is fixed in the shell of the handle; an adjusting hole is formed in the shell of the handle corresponding to the adjusting screw of the pressure stabilizing valve; one end of the hose is fixed on the rear cover.

The utility model discloses domestic towards tooth ware establishes the mouth of a river to the front portion of surge damping valve, and the water inlet is established at the rear portion, and horizontal case adjusting screw's structural feature is established at the middle part, establishes the inner flange in the handle shell, and baffle, backplate, registration arm and hou gai realize the installation location of surge damping valve in the handle before the cooperation. The front part of the handle is divided into a closed water outlet cabin by using a front baffle plate, so that the water outlet of the pressure stabilizing valve can be in butt joint with the water inlet of the water distributor in the simplest mode; the rear part of the handle is divided into a closed water inlet cabin by using a rear baffle plate, so that a water inlet of a pressure stabilizing valve is butted with a tap water pipe in the simplest way; it utilizes the front and rear baffle plates to separate the middle chamber without water in the middle of the handle; the problem of handle probably leaking when adjusting the adjusting screw of surge valve is solved. On the other hand, the structure arrangement ensures that the installation and the maintenance of the pressure maintaining valve are very quick and reliable.

The utility model discloses domestic tooth ware that washes adopts above-mentioned simple mechanical structure to solve and uses the running water directly to carry out the security difficult problem that washes to the inside and outside surface of tooth. It is easy to produce and use, and is suitable for popularization in the masses.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the household tooth rinsing device of the present invention.

Fig. 2 is a schematic longitudinal sectional structure view of the embodiment of fig. 1 in a state that no water is discharged from the two nozzles on the water separator.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic cross-sectional structure view of the water separator portion of the embodiment of fig. 1 in a water outlet state of the first spray head.

Fig. 5 is a schematic cross-sectional structure view of the water separator portion of the embodiment of fig. 1 in a water outlet state of the second spray head.

Fig. 6 is a schematic perspective view of another embodiment of the household tooth rinsing device of the present invention.

Fig. 7 is a schematic view of a rotary cross-section structure of the embodiment of fig. 6 in a state that no water is discharged from three nozzles on the water separator.

Fig. 8 is a partially enlarged view of a portion B in fig. 7.

Fig. 9 is a schematic cross-sectional view of the water separator of the embodiment of fig. 6 in a water outlet state of the first nozzle.

Fig. 10 is a schematic cross-sectional view of the water separator of the embodiment of fig. 6 in a water outlet state of the second nozzle.

Fig. 11 is a schematic cross-sectional view of the water separator of the embodiment of fig. 6 in a water outlet state of the third nozzle.

Detailed Description

One, embodiment one

The structure of the first embodiment of the household tooth flushing device of the present invention is shown in fig. 1 and 2. The household tooth flushing device is provided with a hose 1, a handle 2, a pressure stabilizing valve 23, a water separator 3, a first spray head 4 and a second spray head 5. The pressure maintaining valve 23 is a known product, has an output water pressure of not more than 1.1 kg/square centimeter and is arranged in the handle 2. The free end of the hose 1 is separably communicated with a tap water pipe, and the other end of the hose 1 is fixed on a rear cover 22 of the handle 2 and communicated with a water inlet of a pressure stabilizing valve 23. The water separator 3 is transversely fixed at the front end of the handle 2, and a water inlet 311 of the water separator 3 is communicated with a water outlet of the pressure stabilizing valve 23. The first and second heads 4 and 5 are provided in parallel on the outer periphery of the water separator 3. The water inlet of the first spray head 4 is arranged at the first water outlet 312 of the water separator 3, the water outlet of the first spray head 4 faces to the rear upper part, the water inlet of the second spray head 5 is arranged at the second water outlet 313 of the water separator 3, and the water outlet of the second spray head 5 faces to the front.

The structure of the pressure maintaining valve 23 and the installation thereof in the handle 2 are shown in fig. 2 and 3. The housing 21 of the handle 2 is a straight longitudinal tube in the same plane as the water separator 3, and an inner flange 213 is provided in the housing 21. The water outlet side of the pressure maintaining valve 23 is sleeved on the front baffle plate 24, the water inlet side of the pressure maintaining valve 23 is sleeved on the rear baffle plate 25, the pressure maintaining valve 23, the front baffle plate 24 and the rear baffle plate 25 are installed into the shell 21 from the rear side, the front baffle plate 24 is propped against the inner flange 213, a positioning tube 26 is arranged between the rear side surface of the rear baffle plate 25 and the rear cover 22, and the pressure maintaining valve 23 is fixed in the shell 21 of the handle 2. The front baffle 24 divides the front part of the handle 2 into a closed water outlet chamber 211, and the rear baffle 25 divides the rear part of the handle 2 into a closed water inlet chamber 214; the front and rear baffles 24, 25 separate the central compartment 215 in the handle 2 from the water.

The front part of the valve body 231 of the pressure stabilizing valve 23 is provided with a water outlet 239, the rear part is provided with a water inlet 238, and the middle part is provided with a transverse valve core cavity; a forward and rearward passage 2310 extends through the spool chamber to communicate the inlet 238 and the outlet 239. A forward and rearward pressure chamber 2311 communicates with the water outlet 239 and the spool chamber. The valve core 237 is arranged in the valve core cavity, an annular groove 2371 is arranged on the valve core 237 corresponding to the channel 2310, and an O-shaped sealing ring 232 is arranged on the valve core 2337 outside the annular groove 2371 to ensure that the outer side part of the valve core 237 is kept sealed with the valve core cavity. The inner portion of the spool 237 mates with the inner portion of the spool chamber. The spring 233 is sleeved on a guide rod at the outer end of the valve core 237. The top end of the peripheral wall of the valve core cavity extends outwards and is provided with an internal thread. A gland 236 with external threads is screwed on the peripheral wall of the top end of the valve core cavity, a top block 235 is arranged in the gland 236 and is abutted against the outer side end of a spring 233, and the inner side end of the spring 233 is abutted against the outer side part of the valve core 237. The end face of the gland 236 is provided with a threaded bore in which an adjustment screw 234 is screwed from the outside and bears against a top block 235 in the gland 236.

The adjusting screw 234 of the pressure maintaining valve 23 on the shell 21 of the handle 2 is provided with an adjusting hole 212 for inserting the pressure of the tool adjusting spring 233. When water in the water inlet chamber 214 of the handle 2 enters the water outlet chamber 211 of the handle 2 through the water inlet 238, the channel 2310 and the water outlet 239 of the pressure stabilizing valve 23, if the water outlet pressure is overlarge, the water pressure of the water outlet 239 of the pressure stabilizing valve 23 is transmitted to the inner end surface of the valve core 237 through the pressure cavity 2311, the valve core 237 is extruded outwards, the effective section of the channel 2310 is reduced, the water flow is reduced, the pressure of the water outlet 239 is reduced, and the set pressure is maintained. If the water pressure at the water outlet 239 is lower than the set pressure, the spring 233 automatically pushes the valve core 237 inwards, so that the effective section of the channel 2310 is enlarged, the water flow is increased, and the pressure at the water outlet 239 is increased.

The structure of the water separator 3 is shown in fig. 2. The water separator 3 has a housing 31, a left end cap 32, a right end cap 33, a push rod 34, a first piston 35, a second piston 36 and a pressure spring 37. The shell 31 of the water separator 3 is a horizontal straight pipe, and the wall of the shell is provided with a water inlet 31 and two water outlets 312 and 313 arranged at intervals. The housing 31 has a left end cap 32 and a right end cap 33 with a central hole at both ends. The push rod 34 passes through the inner hole of the housing 31 and is slidably inserted through the center holes of the left and right end covers 32, 33. The push rod 34 is provided with a first piston 35 and a second piston 36 at intervals from left to right in the housing 31, and is sleeved with a compression spring 37. The two ends of the compression spring 37 respectively abut against the right end face of the second piston 36 and the inner end face of the right end cover 33. The right side of the push rod 34 is provided with three dimples spaced leftward from the right end. The front side of the outer periphery of the shell 31 is provided with an outward convex reinforcing rib 314 to reinforce the connection strength between the first water outlet 312 and the second water outlet 313 and the corresponding first spray head 4 and second spray head 5. The outer end face of the right end cap 33 is provided with a boss 331 corresponding to the recess of the push rod 34, and a collision bead 332 is fitted in the boss 331.

At ordinary times, under the action of the pressure spring 37, the left end face of the first piston 35 abuts against the inner end face of the left end cover 32, and the second piston 36 is located between the first water outlet 312 and the second water outlet 313; the outer peripheral surface of the second piston 36 closes the water inlet 311 in the housing 31. Water in the outlet chamber 211 of the handle 2 does not enter the water separator 3. The ball on the ball 332 presses into the first recess in the right end of the push rod 34. The water separator 3 is in a state that the two nozzles 4 and 5 do not discharge water.

Promote the left end of push rod 34 rightwards, pressure spring 37 compresses, and when the ball on bumping ball 332 pressed the second recess on push rod 34 right side, water knockout drum 3 was in the state that first shower nozzle 4 goes out water, please see figure 4: the right end surface of the first piston 35 is close to the first water outlet 312 on the shell 31 from the left side, and the second piston 36 is positioned at the right side of the water inlet 311 and blocks the second water outlet 313; the space between the right end surface of the first piston 35 and the left end surface of the second piston 36 in the housing 31 communicates with the water inlet 311 and the first water outlet 312 on the housing 31. The water in the water outlet chamber 211 of the handle 2 enters the water separator 3 through the water inlet 311 of the shell 31 and is sprayed out from the first water outlet 312 and the first nozzle 4 to the rear and upper direction. Or, the handle 2 is rotated by 180 degrees, and after water in the water outlet chamber 211 of the handle 2 enters the water separator 3 through the water inlet 311 on the shell 31, the water is sprayed out from the first water outlet 312 and the first spray head 4 to the rear lower part.

At this time, if the right end of the push rod 34 is pushed to the left, the ball on the collision ball 332 exits the second recess on the right side of the push rod 34, and under the pushing force of the spring 37, the push rod 34, the first piston 35 and the second piston 36 will move to the left, and the water separator 3 returns to the state that no water is discharged from the two nozzles 4 and 5.

At this time, if the left end of the push rod 34 is pushed to the right, the pressure spring 37 is compressed to the limit, and when the ball on the collision ball 332 is pressed into the third concave groove on the right side of the push rod 34, the water separator 3 is in a state of discharging water from the second nozzle 5, please see fig. 5: the outer peripheral surface of the first piston 35 blocks the first water outlet 312 on the shell 31, and the second piston 36 is positioned at the right of the second water outlet 313; the space between the right end surface of the first piston 35 and the left end surface of the second piston 36 in the housing 31 communicates with the water inlet 311 and the second water outlet 313 on the housing 31. The water in the water outlet chamber 211 of the handle 2 enters the water separator 3 through the water inlet 311 on the housing 31 and is sprayed forward from the second water outlet 313 and the second spray head 5.

At this time, the right end of the push rod 34 is pushed to the left, the ball on the collision ball 332 exits from the third recess on the right side of the push rod 34, the first piston 35 and the second piston 36 will move to the left under the pushing force of the spring 37, the water separator 3 will return to the state that the first spray head 4 is discharging water, and even the water separator 3 will return to the state that both spray heads 4 and 5 are not discharging water.

In order to protect the two nozzles 40, 50, a pipe-shaped housing may be added to the nozzles, so that the outlets of the two nozzles 40, 50 are hidden in the pipe-shaped portion of the housing, thereby beautifying the outer pipe and preventing the front end of the first nozzle 40 from scratching the lips.

Second, embodiment two

The structure of the second embodiment of the household tooth-rinsing device of the present invention is shown in fig. 6 and 7. The household tooth flushing device is provided with a hose 10, a handle 20, a water separator 30, a pressure stabilizing valve 203, a first spray head 40, a second spray head 50 and a third spray head 60. The pressure maintaining valve 203 is a known product, has the output water pressure of not more than 1.1 kg/square centimeter and is arranged in the handle 20. The free end of the hose 10 is detachably communicated with a tap water pipe, and the other end of the hose 10 is fixed on the rear cover 202 of the handle 20 and communicated with the water inlet of the pressure maintaining valve 203. The water separator 30 is transversely fixed at the front end of the handle 20, and first water inlets 3011 and second water inlets 3012 arranged at intervals on the water separator 30 are respectively communicated with the water outlets of the pressure stabilizing valves 203 in the handle 20. The first spray head 40, the second spray head 50, and the third spray head 60 are disposed at intervals on the outer circumference of the water separator 30. The water inlet of the first spray head 40 is arranged at the first water outlet 3012 of the water separator 30, and the water outlet of the first spray head 40 faces the rear upper part; the water inlet of the second nozzle 50 is arranged at the second water outlet 3013 of the water separator 30, the water outlet of the second nozzle 50 faces forward, the water inlet of the third nozzle 60 is arranged at the third water outlet 3016 of the water separator 30, and the water outlet of the third nozzle 60 faces backward and downward.

The structure of pressure maintenance valve 203 and its installation within handle 20 are shown in fig. 7 and 8. The housing 201 of the handle 20 is a straight upright tube with an upper end bent forward and abutting the housing 301 of the water separator 30, and an inner flange 2013 is provided in the housing 201. The water outlet side of the pressure maintaining valve 203 is sleeved on the front baffle 204, the water inlet side of the pressure maintaining valve 203 is sleeved on the rear baffle 205, the pressure maintaining valve 203, the front baffle 204 and the rear baffle 205 are installed into the shell 201 from the lower side, the front baffle 204 abuts against the inner flange 2013, the positioning tube 206 is arranged between the rear side surface of the rear baffle 205 and the rear cover 202, and the pressure maintaining valve 203 is fixed in the shell 201 of the handle 20. The front baffle 204 divides the front part of the handle 20 into a closed water outlet cabin 2011, and the rear baffle 205 divides the rear part of the handle 20 into a closed water inlet cabin 2014; the front and rear fenders 204, 205 partially separate a water-free middle compartment 2015 in the handle 20.

The upper part of the valve body 2031 of the pressure stabilizing valve 203 is provided with a water outlet 2039, the lower part is provided with a water inlet 2038, and the middle part is provided with a transverse valve core cavity; an up-down channel 20310 extends through the cartridge chamber and communicates with the inlet 2038 and the outlet 2039. An up-down pressure chamber 20311 communicates between the outlet 2039 and the cartridge chamber. The valve core 2037 is arranged in the valve core cavity, an annular groove 20371 is arranged on the valve core 2037 corresponding to the channel 20310, and an O-ring 2032 is arranged on the valve core 2037 outside the annular groove 20371 to ensure that the outside part of the valve core 2037 keeps sealed with the valve core cavity. The inner portion of the poppet 2037 fits into the inner portion of the poppet cavity. A spring 2033 is sleeved on a guide rod at the outer end of the valve core 2037. The top end of the peripheral wall of the valve core cavity extends outwards and is provided with an internal thread. A gland 2036 with external threads is screwed on the outer peripheral wall of the top end of the valve core cavity, a top block 2035 is arranged in the gland 2036 and props against the outer side end of the spring 2033, and the inner side end of the spring 2033 props against the outer side part of the valve core 2037. The end face of the gland 2036 is tapped into a tapped hole into which an adjustment screw 2034 is screwed from the outside and abuts against an ejector block 2035 inside the gland 2036.

The adjusting screw 2034 of the handle 20 housing 201 corresponding to the pressure maintaining valve 203 is provided with an adjusting hole 2012 for inserting the pressure of the tool adjusting spring 2033. When water in the water inlet chamber 2014 of the handle 20 enters the water outlet chamber 2011 of the handle 20 through the water inlet 2038, the channel 20310 and the water outlet 2039 of the pressure stabilizing valve 203, if the water outlet pressure is overlarge, the water pressure of the water outlet 2039 of the pressure stabilizing valve 203 is transmitted to the inner end surface of the valve core 2037 through the pressure cavity 20311, the valve core 2037 is extruded outwards, the effective section of the channel 20310 is reduced, the water flow is reduced, the pressure of the water outlet 2039 is reduced, and the set pressure is maintained. If the water pressure at the water outlet 2039 is lower than the set pressure, the spring 2033 automatically pushes the valve core 2037 inwards, so that the effective section of the channel 20310 is increased, the water flow is increased, and the pressure at the water outlet 2039 is increased.

The structure of the water separator 30 is shown in fig. 7. The water separator 30 has a housing 301, a left end cap 302, a right end cap 303, a push rod 304, a first piston 305, a second piston 306, a third piston 308, and a compression spring 307. The shell 301 of the water separator 30 is a horizontal straight pipe, and the wall of the pipe is provided with two water inlets 3011 and 3015 and three water outlets 3012, 3013 and 3016 arranged at intervals. A left end cover 302 and a right end cover 303 with central holes are respectively arranged at two ends of the shell 301. The push rod 304 passes through the inner hole of the housing 301 and is slidably inserted through the central holes of the left and right end covers 302, 303. Four dimples are spaced to the right of the push rod 304 from the right end to the left. The push rod 304 is fixedly provided with a first piston 305, a second piston 306 and a third piston 308 at intervals from left to right in the part inside the housing 301, and is sleeved with a compression spring 307. Two ends of the pressure spring 307 respectively abut against the right end face of the third piston 308 and the inner end face of the right end cover 303. The front side of the outer periphery of the casing 301 is provided with a convex reinforcing rib 3014 to reinforce the connection strength between the first water outlet 3012, the second water outlet 3013 and the third water outlet 3016 and the corresponding first nozzle 40, the second nozzle 50 and the third nozzle 60. The outer end face of the right end cap 303 is provided with a lug 3031 corresponding to each recess of the push rod 304, and a collision bead 3032 is mounted in the lug 3031.

At ordinary times, under the action of the pressure spring 307, the left end face of the first piston 305 abuts against the inner end face of the left end cover 302, and the second piston 306 is located between the first water outlet 3012 and the second water outlet 3013; the outer peripheral surface of the second piston 306 blocks the first water inlet 3011 on the shell 301; the outer peripheral surface of the third piston 308 blocks the second water inlet 3015 and the third water outlet 3016 of the housing 301. The space between the right end face of the first piston 305 and the left end face of the second piston 306 in the housing 301 communicates with the first water inlet 3011 and the first water outlet 3012 on the housing 301. Water in the outlet 2011 of the handle 20 does not enter the diverter 30. The ball on the ball 3032 presses into the first recess on the right end of the push rod 304. The water separator 30 is in a state where no water is discharged from the three spray heads 40, 50, 60.

When the push rod 304 is pushed to the right, the pressure spring 307 is compressed, and the ball on the collision ball 3032 is pressed into the second concave groove on the right side of the push rod 304, the water separator 30 is in a state of water outlet of the first spray head 40, please see fig. 9: the right end face of the first piston 305 is close to the first water outlet 3012 on the housing 301 from the left side, and the second piston 306 is located on the right side of the first water inlet 3011 and blocks the second water outlet 3013; the space between the right end face of the first piston 305 and the left end face of the second piston 306 in the housing 301 communicates with the first water inlet 3011 and the first water outlet 3012 on the housing 301. The outer peripheral surface of the third piston 308 continues to block the second water inlet 3015 on the shell 301; the water in the water outlet cabin 2110 of the handle 20 enters the water separator 30 through the first water inlet 3011 of the shell 301 and is sprayed out from the first water outlet 3012 and the first spray head 40 towards the back and the upper direction.

At this time, if the right end of the push rod 304 is pushed to the left, the ball on the collision ball 3032 exits the second recess on the right side of the push rod 304, and the push rod 304, the first piston 305 and the second piston 306 will move to the left under the pushing force of the spring 307, so that the water separator 30 returns to the state where no water is discharged from the three nozzles 40, 50 and 60.

When the push rod 304 is further pushed to the right, the pressure spring 307 is further compressed, and the ball on the ball 3032 is pressed into the third recess on the right side of the push rod 304, the water separator 30 is in a state of discharging water from the second nozzle 50, please refer to fig. 10: the outer peripheral surface of the first piston 305 blocks the first water outlet 3012 on the shell 301, and the second piston 306 is positioned on the right of the second water outlet 3013; the space between the right end face of the first piston 305 and the left end face of the second piston 306 in the housing 301 communicates with the first water inlet 3011 and the second water outlet 3013 on the housing 301. The water in the water outlet 2011 of the handle 20 enters the water separator 30 through the first water inlet 3011 of the housing 301 and is sprayed out from the second water outlet 3013 and the second nozzle 50 in the forward direction.

At this time, the right end of the push rod 304 is pushed to the left, the ball on the collision ball 3032 exits the third recess on the right side of the push rod 304, and under the pushing force of the spring 307, the push rod 304, the first piston 305, the second piston 306 and the third piston 308 will move to the left, and the water separator 30 will return to the state that the first spray head 40 is discharging water, even the water separator 30 will return to the state that none of the three spray heads 40, 50 and 60 is discharging water.

At this time, if the push rod 304 is further pushed to the right, the pressure spring 307 is compressed to the limit, the ball on the collision ball 3032 is pressed into the fourth recess on the right side of the push rod 304, and the water separator 30 is in the state of water outlet of the third nozzle 60, please refer to fig. 11: the left end face of the first piston 305 is located on the right side of the first water outlet 3012 on the shell 301 and blocks the first water inlet 3011, and the second piston 306 is located between the second water outlet 3013 and the third water outlet 3016; the left end face of the third piston 308 is positioned on the right of the second water inlet 3015 on the shell 301; the space between the right end face of the second piston 306 and the left end face of the third piston 308 in the housing 31 communicates with the second water inlet 3015 and the third water outlet 3016 on the housing 301. The water in the water outlet chamber 211 of the handle 2 enters the water separator 3 through the second water inlet 3015 on the shell 301, and is sprayed out from the third water outlet 3016 and the third nozzle 60 to the rear and lower direction.

At this time, the right end of the push rod 304 is pushed to the left, the ball on the collision ball 3032 exits the fourth recess on the right side of the push rod 304, and under the pushing force of the spring 307, the push rod 304, the first piston 35, the second piston 306 and the third piston 308 will move to the left, and the water separator 30 will return to the state where the second spray head 50 is discharging water, or the water separator 30 is in the state where the first spray head 40 is discharging water, even the water separator 30 will return to the state where none of the three spray heads 40, 50, 60 is discharging water

In order to protect the three nozzles 40, 50, 60, a mushroom-shaped cover may be added to the three nozzles 40, 50, 60 such that the outlets of the three nozzles 40, 50, 60 are hidden in the umbrella-shaped portion of the cover, thereby not only beautifying the outer tube, but also preventing the front end of the first nozzle 40 or the third nozzle 60 from scratching the lips.

The above description is only for the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and all equivalent changes and modifications made by the technical solutions and the contents of the specification of the present invention should fall within the scope covered by the present invention.

Claims (5)

1. The household tooth flushing device is provided with a hose, a handle and a spray head; the method is characterized in that: it also has pressure-stabilizing valve and water separator; the number of the spray heads is two, wherein the water outlet of the first spray head faces to the rear upper part, and the water outlet of the second spray head faces to the front; the output water pressure of the pressure stabilizing valve is not more than 1.1 kg/square centimeter and is arranged in the handle; the free end of the hose is separably communicated with a tap water pipe, and the other end of the hose is fixed on the handle and communicated with the water inlet of the pressure stabilizing valve; the water separator is provided with a shell, a left end cover, a right end cover, a push rod, a first piston and a second piston; the shell is a transverse straight pipe and is fixed at the front end of the handle, and a first water inlet, a first water outlet and a second water outlet which are arranged at intervals are formed in the pipe wall of the shell; the first water inlet of the shell is communicated with the water outlet of the pressure stabilizing valve; the water inlet of the first spray head is arranged at a first water outlet on the shell, and the water inlet of the second spray head is arranged at a second water outlet on the shell; the two ends of the shell are respectively provided with a left end cover and a right end cover which are provided with central holes; the push rod penetrates through the inner hole of the shell and can be slidably arranged in the central holes of the left end cover and the right end cover in a penetrating way; the part of the push rod in the shell is fixedly provided with a first piston and a second piston at intervals from left to right; when the push rod is positioned at the first position, the second piston is positioned between the first water outlet and the second water outlet and blocks the first water inlet of the shell, and the water separator is in a state that the first spray head and the second spray head do not discharge water; when the push rod moves to a second position rightwards, the first water inlet is communicated with the first water outlet in a space between the first piston and the second piston, and the water separator is in a state of water outlet of the first spray head; when the push rod continues to move to the third position, the first piston blocks the first water outlet of the shell, the first water inlet of the shell is communicated with the second water outlet in a space between the first piston and the second piston, and the water separator is in a water outlet state of the second spray head.

2. The household water toothpick according to claim 1 wherein: the part of the push rod in the shell is provided with a pressure spring, and two ends of the pressure spring respectively prop against the second piston and the right end cover; three concave grooves are arranged on the right side of the push rod at intervals from the right end part to the left; a convex lug is arranged on the outer end face of the right end cover corresponding to the concave groove of the push rod, and a collision bead is arranged in the convex lug; when the push rod is located at the first position, the first piston is abutted against the left end cover, and the ball on the collision ball is pressed into the first concave groove at the right end part of the push rod; when the push rod is located at the second position, the ball on the collision ball is pressed into a second concave groove on the right side of the push rod; when the push rod is located at the third position, the pressure spring is compressed to the limit, and the ball on the collision ball is pressed into a third concave groove on the right side of the push rod.

3. The household water toothpick according to claim 1 wherein: it also has the third shower nozzle that the water outlet faces the back lower place; the water separator is also provided with a third piston which is fixed on the push rod and is positioned on the right side of the second piston at intervals; the pipe wall of the shell is also provided with a second water inlet and a third water outlet, the second water inlet is positioned on the right side of the first water inlet at intervals, the third water outlet is positioned on the right side of the second water outlet at intervals, and the water inlet of the third spray head is arranged in the third water outlet; when the push rod is positioned at the first position, the third piston seals the second water inlet and the third water outlet on the shell, and the third spray head does not spray water outwards; when the push rod is positioned at the second position, the third piston blocks the second water inlet on the shell, and the third spray head does not spray water outwards; when the push rod is positioned at the third position, the third piston blocks the second water inlet on the shell, and the third spray head does not spray water outwards; when the push rod continues to move to the fourth position, the first piston blocks the first water outlet of the shell, the third piston is located on the right side of the second water inlet on the shell, the second water inlet of the shell is communicated with the third water outlet in a space between the second piston and the third piston, and the water separator is in a water outlet state of the third spray head.

4. The household water toothpick according to claim 3 wherein: the part of the push rod in the shell is provided with a pressure spring, and two ends of the pressure spring respectively prop against the third piston and the right end cover; four concave grooves are arranged on the right side of the push rod at intervals from the right end part to the left; a convex lug is arranged on the outer end face of the right end cover corresponding to the concave groove of the push rod, and a collision bead is arranged in the convex lug; when the push rod is located at the first position, the first piston is abutted against the left end cover, and the ball on the collision ball is pressed into the first concave groove at the right end part of the push rod; when the push rod is located at the second position, the ball on the collision ball is pressed into a second concave groove on the right side of the push rod; when the push rod is located at the third position, the ball on the collision ball is pressed into a third concave groove on the right side of the push rod; when the push rod is located at the fourth position, the pressure spring is compressed to the limit, and the ball on the collision ball is pressed into the fourth concave groove on the right side of the push rod.

5. The household dental irrigator of claim 1, 2, 3 or 4, wherein: the front part of the pressure stabilizing valve is provided with a water outlet, the rear part of the pressure stabilizing valve is provided with a water inlet, and the middle part of the pressure stabilizing valve is provided with a transverse valve core adjusting screw; the handle is provided with a shell, a front baffle, a rear baffle, a positioning pipe and a rear cover, and an inner flange is arranged in the shell; the water outlet side of the pressure stabilizing valve is sleeved on the front baffle plate in a penetrating manner, the water inlet side of the pressure stabilizing valve is sleeved on the rear baffle plate in a penetrating manner, the pressure stabilizing valve, the front baffle plate and the rear baffle plate are installed into the shell together from the rear side, the front baffle plate is propped against the inner flange, the positioning tube is arranged between the rear side surface of the rear baffle plate and a rear cover for closing the rear end of the shell, and the pressure stabilizing valve is fixed in the shell of the handle; an adjusting hole is formed in the shell of the handle corresponding to the adjusting screw of the pressure stabilizing valve; one end of the hose is fixed on the rear cover.

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