CN212055969U - Drain valve and water heater - Google Patents

Abstract

The utility model discloses a drain valve and a water heater, wherein the drain valve comprises a valve body and a valve block, the valve body is provided with a fluid channel, and a connector is arranged on the fluid channel; the valve block is rotatably connected with the valve body to control the fluid channel to be opened or closed, a gas channel is formed on the valve block, two ends of the gas channel are respectively connected with a first vent and a second vent, when the fluid channel is in an open state, the first vent is communicated with the connecting port in a sealing mode, and the second vent is communicated with the outside of the valve body. The air channel is arranged on the valve block, so that the air channel communicates the inner container with the outside of the valve body, the separation of the fluid channel and the air channel is realized, the balance of the air pressure inside and outside the inner container in the drainage process is ensured, the drainage efficiency of the fluid channel is kept, and the quick drainage is realized; and the sediment at the bottom of the inner container is discharged under the driving of water flow, so that the sanitation of the inner container is ensured, and the water quality of the water outlet of the water heater is improved.

Description

Drain valve and water heater

Technical Field

The utility model relates to the technical field of valves, in particular to drain valve and water heater.

Background

In the related art, an electric water heater generally adopts a single drain hole for draining water, the drainage is controlled by a drain valve connected to the drain hole, and as water and air enter and exit from the drain hole, the drainage rate of the drain valve is gradually reduced in the drainage process, so that the electric water heater generally has the problems of long drainage time, incapability of discharging sediments, long-time deposition at the bottom of an inner container of the electric water heater, bacterium breeding and influence on the body health of a user.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a drain valve can realize opening or closing when fluid passage and gas channel when the drainage, realizes quick drainage.

The utility model discloses still provide a water heater of having above-mentioned drain valve.

According to the utility model discloses a drain valve of first aspect embodiment, include: the valve body is provided with a fluid channel, and a connecting port connected with the valve body is arranged on the fluid channel; the valve block, the valve block with the valve body rotates to be connected in order to control fluid passage opens or closes, be formed with the gas passage on the valve block, the both ends of gas passage are connected with first blow vent and second blow vent respectively, when fluid passage is in preset position, first blow vent with the sealed intercommunication of connector, the second blow vent with the outside intercommunication of valve body.

According to the utility model discloses drain valve has following beneficial effect at least:

by arranging the valve block with the gas channel, when the valve block rotates to open the fluid channel for drainage, the first vent hole on the gas channel is hermetically connected with the connecting port on the valve body, the connecting port is connected with the gas pipe extending into the liner, and the second vent hole on the gas channel is communicated with the outside of the valve body, so that the gas channel is communicated with the outside of the valve body, the separation of the fluid channel and the gas channel is realized, the balance of the gas pressure inside and outside the liner in the drainage process is ensured, the drainage efficiency of the fluid channel is maintained, and the rapid drainage is realized; and the sediment at the bottom of the inner container is discharged under the driving of water flow, so that the sanitation of the inner container is ensured, and the water quality of the water outlet of the water heater is improved.

According to the utility model discloses a some embodiments, the both ends of valve block are formed with the pivot along radial extension respectively, the pivot extends to the valve body, the second gas port is located in the pivot.

According to some embodiments of the utility model, the both ends of pivot all extend to the outside of valve body, just the terminal surface at pivot both ends all is equipped with the second vent, gas passage includes first gas passage and second gas passage, first gas passage's one end with first vent intercommunication, first gas passage's the other end passes through second gas passage and corresponding the second vent intercommunication.

According to the utility model discloses a some embodiments still include actuating mechanism, actuating mechanism with the valve block links to each other, with the drive the valve block rotates.

According to some embodiments of the utility model, actuating mechanism is the bracelet, the bracelet install in just can overturn the cover and locate in the pivot the periphery of valve body.

According to some embodiments of the invention, the first vent is a vent, and the second vent is a vent that extends along a path of movement of the first vent.

According to the utility model discloses a some embodiments still include the valve barrel, the valve barrel with the inner wall of valve body links to each other, form in the valve barrel fluid passage, the one end of shutoff piece with the valve barrel links to each other, the other end with the connector links to each other and corresponds and is equipped with the through-hole.

According to some embodiments of the utility model, be equipped with first spacing portion and the spacing portion of second in the valve barrel, first spacing portion form in the inner wall of valve barrel, in order to restrict when fluid passage is in the closed condition the rotational position of valve block, the spacing portion of second form in on the shutoff piece, in order to restrict when fluid passage is in the open condition the rotational position of valve block.

According to the utility model discloses a some embodiments, the valve body includes interconnect's disk seat and valve gap, the valve barrel install in the disk seat with between the valve gap, the tip of valve barrel outwards extends and is equipped with the flange, the flange clamp is located the disk seat with between the valve gap.

According to the utility model discloses a water heater of second aspect embodiment, including the drain valve of above embodiment.

According to the utility model discloses water heater has following beneficial effect at least:

the valve block with the gas channel is arranged through the drain valve, when the valve block rotates to open the fluid channel for draining, the first vent on the gas channel is hermetically connected with the connecting port on the valve body, the connecting port is connected with the gas pipe extending into the liner of the water heater, and the second vent on the gas channel is communicated with the outside of the water heater, so that the gas channel communicates the liner with the outside of the water heater, the separation of the fluid channel and the gas channel is realized, the balance of the gas pressure inside and outside the liner of the water heater in the draining process is ensured, the draining efficiency of the fluid channel is kept, and the rapid draining of the water heater; and the sediment at the bottom of the inner container is discharged under the driving of water flow, so that the sanitation of the inner container is ensured, and the water quality of the water outlet of the water heater is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a drain valve according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a plan view of a drain valve according to an embodiment of the present invention, wherein the drain valve is in a closed state;

fig. 4 is a plan view of a drain valve according to an embodiment of the present invention, wherein the drain valve is in an open state;

FIG. 5 is a cross-sectional view taken at A-A of FIG. 3;

FIG. 6 is a cross-sectional view of one embodiment at B-B of FIG. 4;

FIG. 7 is a cross-sectional view of another embodiment at B-B in FIG. 4;

FIG. 8 is a cross-sectional view of another embodiment at B-B of FIG. 4;

fig. 9 is a schematic view of the valve sleeve of the drain valve of fig. 2;

FIG. 10 is a schematic view of the valve plate in the drain valve of FIG. 2;

fig. 11 is a schematic view of a valve seat in the drain valve shown in fig. 2;

fig. 12 is a schematic view of a valve cap in the drain valve shown in fig. 2;

fig. 13 is a schematic view of a drive mechanism in the drain valve shown in fig. 2;

fig. 14 is a schematic view showing the installation of a driving mechanism and a valve plate in a drain valve according to another embodiment of the present invention;

fig. 15 is an exploded schematic view of a drain valve according to another embodiment of the present invention;

fig. 16 is an exploded view schematically showing a discharge valve according to another embodiment of the present invention;

figure 17 is a schematic view of the valve sleeve of the drain valve of figure 16;

fig. 18 is a sectional view of the drain valve shown in fig. 16.

Reference numerals:

a valve body 100; an air pipe connection plate 110; a fourth stopper portion 111; a valve seat 130; a valve cover 140; a clamping plane 141; a flange 150; a rotating shaft fixing block 151; a hole site 160; an air pipe 170;

a fluid channel 200; a connection port 210;

a valve plate 300; a gas passage 310; a first gas passage 311; a second gas passage 312; a first vent 320; a second vent 330; a rotating shaft 340; the mounting holes 341; a flat block 342;

a blocking piece 400; a through-hole 410;

a drive mechanism 500; a bracelet 510; a mounting portion 511; a handle portion 512; a notch 513; a handle 520; a flat mounting opening 521;

a valve housing 600, a first stopper 610; a second stopper 620; a third stopper 630; a flange 640; a gasket 650; a recess 660; a circlip 670; a shaft fixing hole 680.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the description of the present invention, if there are first, second, third and fourth descriptions, they are only used for distinguishing technical features, but not for indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The utility model relates to a water heater of embodiment specifically is water storage type's water heater, for example electric water heater. The water heater of this embodiment is including the inner bag that is used for storing water, and when the electric heater of inner bag heated water, can produce the incrustation scale, and the production of incrustation scale can reduce the heating efficiency of water heater, blocks up the pipeline even, causes the water heater trouble, but also can reduce the life of water heater. Therefore, the lower part of the inner container is provided with a drain hole, and the drain hole is connected with a drain valve which is used for controlling the drain hole to drain water so as to clean the inner container.

Referring to fig. 1, 2, 3 and 5, the drain valve according to an embodiment of the present invention includes a valve body 100, a fluid channel 200 is provided inside the valve body 100, a connection port 210 is provided in the fluid channel 200, and the connection port 210 can be fixed on an inner wall of the valve body 100 through an air pipe connection plate 110. It is further described that the connection port 210 is connected with an air pipe 170 extending into the inner container of the water heater, and the upper end of the air pipe 170 is located above the liquid level of the inner container, so that the connection port 210 is in space communication with the inner container. Referring to fig. 2, the air tube 170 and the connection port 210 may be fixed by a screw connection, or may be fixed by a sealing connection therebetween, which is not limited in detail. Referring to fig. 3, 4, 5 and 6, the drain valve of the embodiment of the present invention further includes a valve plate 300, wherein the valve plate 300 is rotatably connected to the valve body 100 to control the fluid passage 200 to be opened (as shown in fig. 6) or to control the fluid passage 200 to be closed (as shown in fig. 5). Specifically, the valve plate 300 is formed with a gas channel 310, two ends of the gas channel 310 are respectively connected with a first vent 320 and a second vent 330, as shown in fig. 4 and 6, when the valve plate 300 rotates to a predetermined position, i.e., an open state, of the fluid channel 200, the first vent 320 is in sealed communication with the connecting port 210, and the second vent 330 is in communication with the outside of the valve body 100, so that the fluid channel 200 and the gas channel 310 are separated. Therefore, when the air pressure in the inner container is smaller than the air pressure outside the valve body 100, the air passage 310 conducts the inner container and the outside of the valve body 100, so that the air pressures inside the inner container and outside the valve body 100 are balanced, the drainage valve can keep the drainage efficiency of the fluid passage 200 during the drainage process of the inner container, and the rapid drainage is realized; and the sediment at the bottom of the inner container is discharged under the driving of water flow, so that the sanitation of the inner container is ensured, and the water quality of the water outlet of the water heater is improved. Referring to fig. 3 and 5, when the valve plate 300 is rotated to a state where the fluid passage 200 is closed, the first vent 320 is sealed from the valve body 100, so that the gas passage 310 is closed.

Referring to fig. 1 and 2, the water discharge valve of the present embodiment further includes a driving mechanism 500, and the driving mechanism 500 is connected to the valve plate 300 to drive the valve plate 300 to rotate, so as to control the opening and closing of the fluid passage 200. It is understood that the driving mechanism 500 may be an automatic control device or a manual control device, and is not limited in detail herein. Also, the driving mechanism 500 is provided outside the valve body 100, facilitating installation arrangement or manual operation.

Referring to fig. 5 and 6, in some embodiments of the utility model, still include shutoff piece 400 in the drain valve, shutoff piece 400 extends along the removal route of first blow vent 320 and forms, shutoff piece 400 is the same with the radian of the motion orbit at the border that valve block 300 set up first blow vent 320 department, the motion orbit of shutoff piece 400 with valve block 300 has been guaranteed to cooperate, rotate at valve block 300 and open or close fluid passage 200's in-process, set up and laminate on shutoff piece 400 in the first blow vent 320 at valve block 300 border, thereby prevent that the water in fluid passage 200 from getting into first blow vent 320 at valve block 300 rotation in-process, improve gas passage 310's seal, promote the flow efficiency of air current in the gas passage 310.

Referring to fig. 2, 3 and 5, in some embodiments of the present invention, the drain valve further includes a valve sleeve 600, the valve sleeve 600 is connected to the inner wall of the valve body 100, and an interference fit is adopted between the valve sleeve 600 and the inner wall of the valve body 100, so that the valve sleeve 600 can be tightly fixed to the inner wall of the valve body 100, and the sealing performance between the valve sleeve 600 and the valve body 100 is improved. Specifically, the fluid channel 200 is formed in the valve sleeve 600, the valve plate 300 is disposed in the valve sleeve 600, and the valve plate 300 and the valve sleeve 600 are in interference fit, so that the sealing performance between the valve plate 300 and the fluid channel 200 is better. Referring to fig. 9, the blocking member 400 is connected to the valve housing 600 at one end and is connected to the connection port 210 at the other end and is provided with a through hole 410, and the blocking member 400 is disposed on the valve housing 600 and installed in the valve body 100 together with the valve housing 600. The blocking piece 400 extends to the connecting port 210 along the position of the valve plate 300 on the valve sleeve 600, which closes the fluid channel 200, the radian of the blocking piece 400 is the same as the radian of the movement track of the edge of the valve plate 300, the upper end of the blocking piece 400 is provided with a through hole 410 for communicating the gas channel 310, the through hole 410 is positioned below the connecting port 210, the blocking piece 400 is tightly attached to the gas pipe connecting plate 110 below the connecting port 210, so that when the valve plate 300 moves from the position of closing the fluid channel 200 to the position of opening the gas channel 310, the first vent 320 is in a sealed state, water is prevented from entering the first vent 320 in the movement process of the valve plate 300, the problem that the gas channel 310 is blocked is caused, and the drainage. Further, interference fit is adopted between valve block 300 and the shutoff piece 400, has promoted the sealed effect of shutoff piece 400 to first vent 320.

Referring to fig. 5, in a further embodiment of the present invention, a first position-limiting portion 610 and a second position-limiting portion 620 are provided in the valve housing 600, and the first position-limiting portion 610 is formed on the inner wall of the valve housing 600 to limit the position of the valve sheet 300 when the fluid passage 200 is in the closed state. Specifically, the first position-limiting part 610 is disposed above the position of the valve plate 300 when closing the fluid passage 200, and is attached to the valve body 100 when closing the fluid passage 200 by the valve plate 300, so that the valve body 100 does not rotate excessively when closing the fluid passage 200 and opens the fluid passage 200 again; the second limiting portion 620 is formed on the blocking member 400 to limit the rotation position of the valve plate 300 when the fluid channel 200 is in the open state, when the valve plate 300 rotates to the first vent 320 to communicate with the through hole 410, the valve plate will abut against the second limiting portion 620, the second limiting portion 620 prevents the valve plate 300 from rotating excessively, and the first vent 320 can be maintained to be always connected with the through hole 410 for venting when the fluid channel 200 is opened. The first and second stoppers 610 and 620 restrict the rotation of the valve sheet 300 in the valve housing 600, and fix the position of the valve sheet 300 in both the states of opening the fluid passage 200 and closing the fluid passage 200.

Further, referring to fig. 5, the first position-limiting portion 610 and the second position-limiting portion 620 may be respectively located on two independent bump structures, the second position-limiting portion 620 is located on the plugging member 400, and the first position-limiting portion 610 is disposed on the inner wall of the valve sleeve 600. It is understood that the first position-limiting portion 610 and the second position-limiting portion 620 may also be located on a bump structure of an integrated structure, the bump structure extends from the inner wall of the valve sleeve 600 along the direction of the through hole 410, the lower end of the bump structure forms the first position-limiting portion 610, and the upper end of the bump structure forms the second position-limiting portion 620.

Referring to fig. 9 and 11, in a further embodiment of the present invention, a third position-limiting portion 630 is disposed on the second position-limiting portion 620, the second position-limiting portion 620 protrudes downward, and the third position-limiting portion 630 is formed in the second position-limiting portion 620; the valve body 100 is provided with a fourth limiting part 111 matched with the third limiting part 630 in a positioning manner, the fourth limiting part 111 is arranged at the bottom of the air pipe connecting plate 110 and above the third limiting part 630 and is matched with the third limiting part 630, so that the valve body 100 is matched with the plugging piece 400 in a positioning manner, the valve sleeve 600 is fixed, meanwhile, the second limiting part 620 is supported, and the second limiting part 620 is prevented from deforming. Further, one of the third position-limiting portion 630 and the fourth position-limiting portion 111 is a boss structure, and the other is a groove structure. The third limiting part 630 and the fourth limiting part 111 are in interference fit and are firmly fixed.

Referring to fig. 6, in some embodiments of the present invention, the two ends of the valve plate 300 are respectively formed with a rotating shaft 340 along a radial direction, the rotating shaft 340 extends to the valve body 100, the second vent 330 is located on the rotating shaft 340, and the rotating shaft 340 rotates to drive the valve plate 300 to rotate. One end of the rotating shaft 340 extends to the outside of the valve body 100, and the second vent 330 may be disposed at one end of the rotating shaft 340 (as shown in fig. 6); as another embodiment, both ends of the rotating shaft 430 extend to the outside of the valve body 100, and the second vents 330 may be disposed at both ends of the rotating shaft 340 (as shown in fig. 7 and 8). Specifically, the second vent 320 may be disposed on an end surface of the rotating shaft 340 extending out of the valve body 100, or may be disposed on an outer peripheral surface of a portion of the rotating shaft 340 extending out of the valve body 100, which is not particularly limited herein. When the valve plate 300 rotates by the rotating shaft 340 until the first vent 320 communicates with the connecting port 210, the external air enters the air channel 310 through the second vent 330 disposed on the rotating shaft 340, passes through the air channel 310 to the first vent 320, and finally enters the connecting port 210. Further, referring to fig. 6, the gas channel 310 may be formed by two perpendicular channels, one connected to the first vent 320 and the other connected to the second vent 330, and the gas channel 310 may also be configured as an arc channel or a multi-section channel, which is not limited herein.

In some embodiments of the present invention, as shown in fig. 7 and 8, both ends of the rotating shaft 340 extend to the outside of the valve body 100, and the end surfaces at both ends of the rotating shaft 340 are provided with the second vent 330, the gas channel 310 includes the first gas channel 311 and the second gas channel 312, one end of the first gas channel 311 is communicated with the first vent 320, and the other end of the first gas channel 320 is communicated with the corresponding second vent 330 through the second gas channel 312. Referring to fig. 7, the second air channel 312 penetrates the rotating shaft 340 in the horizontal direction, and is communicated with the second air vents 330 respectively disposed at two sides of the rotating shaft 340, and the first air channel 311 is communicated with the first air vents 320 and the second air channel 312. Further, the first gas channel 311 is perpendicular to the second gas channel 312. Referring to fig. 8, the second gas channel 312 includes two arc-shaped channels respectively communicating with the second gas ports 330 on two sides of the rotating shaft 340, the other end of the second gas channel 312 opposite to the second gas ports 330 is communicated with the first gas channel 311, and the first gas channel 311 communicates with the two arc-shaped second gas channels 312 and the first gas ports 320. It is understood that the second gas channel 312 may also be a multi-segment channel with two segments respectively connected to the second gas outlets 330 on two sides of the rotating shaft 340, and is not limited in detail here.

Referring to fig. 2, in some embodiments of the present invention, the valve body 100 includes a valve seat 130 and a valve cover 140 connected to each other, and the valve housing 600 is installed between the valve seat 130 and the valve cover 140. Specifically, the valve seat 130 and the valve cover 140 may be securely fixed by a threaded connection, a flanged connection, or other means that can achieve a secure connection between the valve body 100 and the valve cover 140. Referring to fig. 9 and 12, a hole 160 for extending the shaft 340 is formed on the valve body 100, a shaft fixing hole 680 is formed on the valve housing 600, the shaft fixing hole 680 is disposed corresponding to the hole 160, and the shaft 340 passes through the shaft fixing hole 680 and is rotatably connected to the hole 160. Referring to fig. 11 and 12, the valve seat 130 and the valve cover 140 are connected by threads, and when the inner wall of the valve cover 140 is provided with internal threads, the outer wall of the valve seat 130 is provided with corresponding external threads; when the outer wall of the valve cap 140 is provided with external threads, the inner wall of the valve cap 130 is provided with corresponding internal threads. Referring to fig. 15, as another embodiment, a flange is used to connect the valve seat 130 and the valve cover 140, a flange 150 is provided at the bottom of the valve seat 130, a screw hole corresponding to the flange 150 is provided at the top of the valve cover 140, and the flange 150 and the screw hole are connected by a bolt. It will be appreciated that the flange 150 may be disposed on the top of the cap 140 and the bottom of the valve seat 130 may be provided with threaded holes corresponding to the flange 150. A rotating shaft fixing block 151 is arranged below the flange plate 150 and above the hole site 160, the rotating shaft fixing block 151 is matched with the hole site 160, and after the valve seat 130 and the valve cover 140 are installed, the rotating shaft 340 can extend into the hole site 160 to be installed. Referring to fig. 12 and 15, a clamping plane 141 is further disposed on an outer side of the valve cap 140 to facilitate clamping of the valve cap 140 by a tool and installation of the valve cap 140.

Referring to fig. 5 and 9, in a further embodiment of the present invention, the end of the valve housing 600 is provided with a flange 640 extending outwardly therefrom, the flange 640 being interposed between the valve seat 130 and the valve cover 140 for securing the valve housing 600 between the valve seat 130 and the valve cover 140. Specifically, the flange 640 is disposed between the upper end surface of the bonnet 140 and the lower end surface of the valve seat 130, and the valve sheet 300 is located below the flange 640. The flange 640 is clamped by the valve seat 130 and the valve cover 140 during the installation process, so that the valve sleeve 600 is fixed between the valve cover 140 and the valve seat 130, the valve sleeve 600 is prevented from being deviated and falling off, and the valve sleeve 600 is firmly fixed.

Referring to fig. 5, in a further embodiment of the present invention, a gasket 650 is provided between the flange 640 and the valve cover 140. Specifically, the washer 650 is disposed between the flange 640 and the upper end surface of the cap 140 to space the flange 640 from the cap 140, thereby preventing the upper end surface of the cap 140 from being worn against the valve housing 600 and preventing the valve housing 600 from being damaged due to an excessive assembly torque. Due to the presence of the gasket 650, the flange 640 is uniformly pressurized when the valve body 100 is press-fitted, thereby improving the leakage prevention performance of the valve housing 600 and the valve body 100.

Referring to fig. 10 and 13, in some embodiments of the present invention, the driving mechanism 500 is a bracelet 510, and the bracelet 510 is mounted on the rotating shaft 340 and can be rotatably sleeved on the outer periphery of the valve body 100 (as shown in fig. 1). Specifically, bracelet 510 includes installation department 511 and handle portion 512, and pivot 340 one side is provided with mounting hole 341, and the fixing of bracelet 510 is accomplished in mounting hole 341 in the cartridge of installation department 511. It is understood that, as another embodiment, the mounting hole 341 is disposed on the bracelet 510, and a fixing hole (not shown) matched with the rotation shaft 340 in size is disposed on the bracelet 510 to be fixed on the rotation shaft 340. The size of the handle part 512 is slightly larger than the outer diameter of the valve body 100, so that the bracelet 510 can be turned over and sleeved outside the valve body 100 in a non-use state, and the space is saved; further, bracelet 510 adopts the steel wire shaping of bending, still is provided with breach 513 between installation department 511 and the handle portion 512, and breach 513 department is bracelet 510's mounted position, and the setting up of breach 513 makes bracelet 510 have elasticity, the installation of being convenient for.

Referring to fig. 14, in some embodiments of the present invention, the driving mechanism 500 is a handle 520, the handle 520 is fixed on the rotating shaft 340 by bolts, so as to facilitate installation and operation, specifically, the flat block 342 is disposed on one side of the rotating shaft 340, the handle 520 is also provided with a flat mounting port 521 corresponding to the flat block, a screw hole is further disposed outside the flat mounting port 521, during installation, the flat mounting port 521 on the handle 520 is aligned with the flat block 342 on the rotating shaft 340, and then the bolts are screwed into the screw hole, so as to complete the fixation of the handle 520.

Referring to fig. 16, 17 and 18, in some embodiments of the present invention, the inner wall of the valve sleeve 600 is formed with a groove 660, the groove 660 and the flange 640 are spaced apart in the axial direction of the valve sleeve 600, and a circlip 670 is provided in the groove 660 for fixing the valve sleeve 600 in the valve body 100. Specifically, the groove 660 is formed in the inner wall of the valve sleeve 600 above the valve plate 300, the elastic retainer 670 is fixed in the groove 660, and the flange 640 is located below the valve plate 300. The elastic collar 670 is disposed above the valve housing 600, and fixes the upper edge of the valve housing 600 in the valve seat 130, thereby preventing water from flowing into a gap between the valve housing 600 and the valve body 100 from the fluid passage 200, and improving the sealing performance of the valve housing 600.

In some embodiments of the present invention, referring to fig. 6, the connection port 210 is located on the central axis of the fluid channel 200, when the fluid channel 200 is in the open state, the valve sheet 300 is parallel to or coincides with the central axis of the fluid channel 200, and after the valve sheet 300 is rotated to connect the connection port 210 and the first vent 320, the fluid channel 200 is opened to the maximum, at this time, the drainage speed is the fastest, and the efficiency is the highest. Specifically, the first vent 320 on the valve plate 300 is disposed at the middle point of the connecting shaft 340 and perpendicular to the end of the connecting line of the connecting shaft 340, the gas channel 310 is a first gas channel 311 and a second gas channel 312 disposed perpendicular to each other, the first gas channel 311 is connected to the first vent 320, and the second gas channel 312 is connected to the second vent 330. The rotation shaft 340 is perpendicular to the sidewall of the valve body 100 and passes through the central axis of the fluid channel 200, the connection port 210 is also fixed on the central axis of the fluid channel 200, and the first vent 320 and the connection port 210 are communicated when the valve plate 300 rotates 90 degrees from the closed state of the fluid channel 200, so that the maximum water flow of the fluid channel 200 is ensured when the first vent 320 is communicated with the gas channel 310.

In some embodiments of the present invention, the drain valve of this embodiment includes a limiting mechanism (not shown in the figure) for limiting the rotation angle of the valve plate 300, and limiting the movement of the valve plate 300 between opening the fluid channel 200 and closing the fluid channel 200. The limiting mechanism can be arranged outside the valve body 100 and used for limiting the displacement of the driving mechanism 500 and further limiting the rotating angle of the valve plate 300, so that the valve plate 300 cannot continue to rotate after rotating to the communicated gas channel 310, the drainage efficiency of the drain valve is ensured, the valve plate 300 can not continue to rotate after rotating to close the fluid channel 200, and the sealing effect of the valve plate 300 is ensured.

According to the utility model relates to a water heater of embodiment, the drain valve including above embodiment. Specifically, the drain valve is arranged on a drain hole of the water heater liner to control the drain hole to drain water outwards. The water heater of the embodiment is provided with the valve plate 300 with the gas channel 310 through the drain valve, when the valve plate 300 rotates to open the fluid channel 200 for draining, the first vent 320 on the gas channel 310 is hermetically connected with the connecting port 210 on the valve body 100, the connecting port 210 is connected with the gas pipe 170 extending into the liner of the water heater, and the second vent 330 on the gas channel 310 is communicated with the outside of the water heater, so that the gas channel 310 communicates the liner with the outside of the water heater, thereby realizing the separation of the fluid channel 200 and the gas channel 310, ensuring the balance of the gas pressure inside and outside the liner during the draining process of the water heater, maintaining the draining efficiency of the fluid channel 200, and realizing the rapid draining of the water heater; and the sediment at the bottom of the inner container is discharged under the driving of water flow, so that the sanitation of the inner container is ensured, and the water quality of the water outlet of the water heater is improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.

Claims (10)

1. A drain valve, comprising:

the valve body is provided with a fluid channel, and a connecting port connected with the valve body is arranged on the fluid channel;

the valve plate is connected with the valve body in a rotating mode to control the fluid channel to be opened or closed, a gas channel is formed on the valve plate, a first vent hole and a second vent hole are formed in the two ends of the gas channel respectively, when the fluid channel is located at a preset position, the first vent hole is communicated with the connecting port in a sealing mode, and the second vent hole is communicated with the outside of the valve body.

2. The drain valve according to claim 1, wherein: the two ends of the valve plate respectively extend along the radial direction to form rotating shafts, the rotating shafts extend to the valve body, and the second vent is located on the rotating shafts.

3. The drain valve according to claim 2, wherein: the both ends of pivot all extend to the outside of valve body, just the terminal surface at pivot both ends all is equipped with the second gas port, gas passage includes first gas passage and second gas passage, first gas passage's one end with first gas port intercommunication, first gas passage's the other end passes through second gas passage and corresponding the second gas port intercommunication.

4. The drain valve according to claim 2, wherein: the valve plate driving device further comprises a driving mechanism, and the driving mechanism is connected with the valve plate to drive the valve plate to rotate.

5. The drain valve according to claim 4, wherein: the actuating mechanism is a bracelet, the bracelet with the pivot is rotated and is connected and can overturn and cover and locate the periphery of valve body.

6. The drain valve according to claim 1, wherein: the first vent opening is formed by extending the blocking piece along the moving path of the first vent opening so as to close the first vent opening.

7. The drain valve according to claim 6, wherein: the valve body is provided with a connecting port, the valve body is provided with a fluid channel, the connecting port is connected with the fluid channel, and the fluid channel is communicated with the fluid channel.

8. The drain valve according to claim 7, wherein: the valve sleeve is internally provided with a first limiting part and a second limiting part, the first limiting part is formed on the inner wall of the valve sleeve to limit the rotating position of the valve plate when the fluid channel is in a closed state, and the second limiting part is formed on the plugging piece to limit the rotating position of the valve plate when the fluid channel is in an open state.

9. The drain valve according to claim 7, wherein: the valve body comprises a valve seat and a valve cover which are connected with each other, the valve sleeve is arranged between the valve seat and the valve cover, a flange extends outwards from the end of the valve sleeve, and the flange is clamped between the valve seat and the valve cover.

10. The water heater, its characterized in that: a drain valve according to any of claims 1 to 9.

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