CN217736392U - Constant flow valve and bathroom equipment - Google Patents

Abstract

The utility model relates to a constant current valve and bathroom equipment, constant current valve includes: base shell, baffle subassembly, enclosing cover, case and elastic component. The base shell has an orifice, an internal valve bore, an input port and an output port. The diaphragm assembly cooperates with the base housing to define a boundary of the first interior chamber. The first inner cavity is communicated with the input port. The outer cover and the base shell are matched to form the boundary of a second inner cavity, and the second inner cavity is communicated with the first inner cavity through the throttling hole. The second inner cavity is communicated with the output port. The spool is connected to the diaphragm assembly. The valve core is matched with the edge of the inner valve hole to form the boundary of the overflow outlet. The elastic member is connected to the diaphragm assembly and is capable of at least partially equalizing the pressure of the medium in the first interior chamber beyond the second interior chamber. The base shell is only required to be positioned once, so that the situation that positioning processing is required for many times due to the fact that the throttling hole, the inner valve hole, the input port and the output port are distributed on different components is avoided, and the production efficiency of the constant flow valve is improved.

Description

Constant flow valve and bathroom equipment

Technical Field

The utility model relates to a bathroom technical field especially relates to a constant flow valve and bathroom equipment.

Background

The sanitary ware is a product applied to a toilet or a bathroom, and can be a closestool, a squatting pan, a hand basin or a bathtub and the like. In order to wash articles or parts of a user's body or clean sanitary equipment, corresponding waterways are generally provided in the sanitary equipment to control the flow of water and perform corresponding washing or cleaning functions.

A part of waterways in the sanitary equipment need to overflow redundant water in the waterway by using a flow constant structure, so that the final output flow of the waterway is maintained in a preset range. In order to meet the corresponding functions, a plurality of ports are required to be processed on the constant-current structure, and in order to ensure the accuracy of the positions of the ports, positioning treatment needs to be carried out before each port is processed. Because the number of ports on the constant-current structure is large, multiple positioning processes are required, and the production efficiency of the constant-current structure is difficult to improve.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a constant flow valve and a sanitary ware, which are used for solving the problem that the production efficiency of a constant flow structure is difficult to improve due to the fact that a plurality of times of positioning treatment are required when the constant flow structure is used for processing a port.

A constant flow valve is provided with a first inner cavity, an overflow outlet and a second inner cavity; the overflow mouth communicates in first inner chamber, the constant flow valve includes:

the base shell is provided with a throttling hole, an internal valve hole, an input port and an output port;

a diaphragm assembly cooperating with the base housing to define a boundary of the first interior cavity; the first inner cavity is communicated with the input port;

an outer cover cooperating with the base housing to define a boundary of the second interior chamber, the second interior chamber communicating with the first interior chamber through the orifice; the second inner cavity is communicated with the output port;

a valve core connected to the partition plate assembly; the valve core is also matched with the edge of the inner valve hole to form the boundary of the overflow outlet; and

a resilient member coupled to the diaphragm assembly and configured to at least partially equalize a pressure of the medium in the first interior chamber beyond the second interior chamber.

In the constant flow valve, water enters the first inner cavity through the input port, and medium pressure is generated on one surface of the partition plate assembly by the water in the first inner cavity. The water in the first chamber passes through the orifice and into the second chamber, which creates a media pressure against the other surface of the diaphragm assembly. Because the elastic element balances the medium pressure of the first inner cavity exceeding the second inner cavity through elastic deformation, the different deformation amplitudes of the elastic element influence the positions of the partition plate assembly and the valve core. The valve core can adjust the opening degree of the overflow outlet, so that the flow rate of the water flow overflowing from the first inner cavity can be adjusted. Because orifice, interior valve opening, input port and delivery outlet all set up in the base shell, therefore before need to carry out processing to orifice, interior valve opening, input port or delivery outlet, only need carry out disposable location to the base shell and handle, avoid because orifice, interior valve opening, input port and delivery outlet distribute in different devices and lead to carrying out location processing many times to improve the production efficiency of constant current valve.

In one embodiment, the valve further comprises a first split shell connected to the base shell, and the throttle hole is located between the first split shell and the outer cover.

In one embodiment, the installation path of the first split case is parallel to the communication direction of the throttle hole; an overflow pipe is connected to the outer side of the base shell and communicated with the overflow outlet; the outer end of the overflow pipe faces away from the installation path of the first sub-shell.

In one embodiment, the base shell is provided with a transition port; the clapboard component covers the transition port; when the throttling hole projects to the plane of the transition port, the transition port and the throttling hole are arranged in a separated mode.

In one embodiment, the output port is disposed on a side of the orifice hole facing away from the transition port.

In one embodiment, a side of the base shell facing the outer cover is provided with a receiving groove; the groove wall of the accommodating groove is arranged around the transition port, and the outer cover is at least partially accommodated in the accommodating groove.

In one embodiment, the outer cover is provided with a clamping ring part, and the outer edge part of the partition plate assembly is abutted between the clamping ring part and the edge of the transition port.

In one embodiment, the outer cover is formed with a support cylinder part, and the support cylinder part is arranged opposite to the clapboard assembly; one end of the elastic piece is sleeved on the supporting cylinder part.

In one embodiment, a mounting block is attached to the outside of the base housing.

A sanitary installation comprises a constant flow valve.

Drawings

Fig. 1 is a schematic perspective view of a constant flow valve according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of the constant flow valve shown in FIG. 1 at another angle;

FIG. 3 is a partial schematic view of the constant flow valve shown in FIG. 1;

FIG. 4 is an enlarged view of the constant flow valve shown in FIG. 3 at A;

FIG. 5 is a partial schematic view of the constant flow valve of FIG. 1 after disassembly;

fig. 6 is a perspective view illustrating an outer cap in the constant flow valve shown in fig. 5.

Reference numerals:

100. a constant flow valve; 20. a base shell; 201. an orifice; 202. an overflow outlet; 203. an internal valve bore; 204. an input port; 205. an output port; 206. a transition port; 207. accommodating grooves; 208. a control port; 21. mounting blocks; 211. a notch; 22. a fluid delivery pipe; 23. a cylindrical portion; 24. an overflow pipe; 30. a bulkhead assembly; 31. a first lumen; 32. a second lumen; 34. a flexible sheet; 35. a clamping block; 40. an outer cover; 41. a collar portion; 411. a channel; 42. a branch cylinder part; 43. a first flange portion; 431. a groove; 44. a first seal member; 50. a valve core; 51. an adjustment section; 52. a large end; 53. a small end; 60. an elastic member; 70. a first split shell; 71. a second flange portion; 80. a second split shell; 90. a switch unit; 91. a plug body; 92. an electromagnetic member.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediate medium. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical solution provided by the embodiments of the present invention is described below with reference to the accompanying drawings.

The utility model provides a bathroom equipment.

In some embodiments, the sanitary arrangement is provided with a spray waterway for directing a flow of water to flow. In one embodiment, the spray waterway is capable of directing a spray of water to the private parts of a sanitary user. In another embodiment, the sanitary ware may be provided with a liquid pool, and the spray water path is used for guiding water flow to the liquid pool so as to wet the wall surface of the liquid pool or clean dirt on the wall surface of the liquid pool.

In some embodiments, the spray rinsing circuit may be divided into a front section, a middle section and a rear section which are connected in sequence. When flowing in the spray washing water path, the water flow passes through the front section, the middle section and the rear section in sequence.

In some embodiments, as shown in connection with fig. 1, the sanitary fixture includes a constant flow valve 100, the constant flow valve 100 being configured to bound a middle section of a spray circuit and to control an output flow of the spray circuit. Further, the constant flow valve 100 keeps the output flow rate constant by overflowing the surplus water flowing into the spray water path.

In some embodiments, the sanitary equipment is provided with a liquid storage container, and the water flow overflowing from the constant flow valve 100 may be stored in the liquid storage container. Furthermore, the stored water in the liquid storage container can be sent into the spraying and washing water channel again or flow into the liquid pool through other water channels to clean or wash the liquid pool.

In some embodiments, the sanitary fixture includes a body provided with a liquid bath. In one embodiment, the sanitary installation further comprises a spray gun module, and the end of the rear section of the spray water path is formed at the spray gun module. In one embodiment, the sanitary fixture may be a toilet. In another embodiment, the sanitary equipment may be any combination structure at least including a squatting pan and a water storage device.

Referring to fig. 1 to 6, the present invention further provides a constant flow valve 100.

In some embodiments, as shown in fig. 3 and 4, the constant flow valve 100 has a first inner cavity 31, an overflow outlet 202 and a second inner cavity 32, and the water flowing along the spray water path passes through the first inner cavity 31 and the second inner cavity 32 in sequence. Before the water flow enters the second inner cavity 32, a part of the water flow in the first inner cavity 31 flows out from the overflow outlet 202, so that the pressure difference between the first inner cavity 31 and the second inner cavity 32 is kept stable. In combination with the adjustment of the size of the communication opening between the first inner cavity 31 and the second inner cavity 32, the flow rate of the water flow entering the second inner cavity 32 from the first inner cavity 31 can be kept stable, and therefore the flow rate output by the spray water path can be kept unchanged.

In some embodiments, as shown in fig. 3 and 4 in combination, the constant flow valve 100 includes: base shell 20, diaphragm assembly 30, outer cover 40, valve core 50 and elastic member 60. The base housing 20 has an orifice 201, an internal valve bore 203, an input port 204, and an output port 205. Baffle plate assembly 30 cooperates with base housing 20 to define the boundaries of first interior chamber 31. The first cavity 31 communicates with the input port 204. The outer cap 40 cooperates with the base housing 20 to define the boundary of the second interior chamber 32, and the second interior chamber 32 communicates with the first interior chamber 31 through the orifice 201. The second lumen 32 communicates with the output port 205. Valve cartridge 50 is attached to diaphragm assembly 30. Valve core 50 also cooperates with the edge of inner valve bore 203 to form the boundary of overflow outlet 202. Resilient member 60 is coupled to diaphragm assembly 30 and is capable of at least partially equalizing the pressure of the medium in first interior chamber 31 over second interior chamber 32.

Specifically, water enters first interior chamber 31 through inlet port 204, and the water within first interior chamber 31 creates a media pressure against one surface of diaphragm assembly 30. The water in the first inner chamber 31 flows through the orifice 201 into the second inner chamber 32, and the water in the second inner chamber 32 generates a medium pressure on the other surface of the diaphragm assembly 30. Since the elastic member 60 balances the pressure of the medium in the first cavity 31 exceeding the pressure of the medium in the second cavity 32 through elastic deformation, the different deformation amplitudes of the elastic member 60 cause the position of the diaphragm assembly 30 and the valve core 50 to change. The movement of the valve core 50 adjusts the opening degree of the overflow outlet 202, so that the flow rate of the water overflowing from the first inner cavity 31 can be adjusted, and the pressure difference between the first inner cavity 31 and the second inner cavity 32 can be kept stable. Because the throttle hole 201, the inner valve hole 203, the input port 204 and the output port 205 are all arranged in the base housing 20, before the throttle hole 201, the inner valve hole 203, the input port 204 or the output port 205 needs to be processed, only one-time positioning operation needs to be performed on the base housing 20, and the problem that multiple times of positioning processing needs to be performed due to the fact that the throttle hole 201, the inner valve hole 203, the input port 204 and the output port 205 are distributed on different components is avoided, so that the production efficiency of the constant flow valve 100 is improved.

In some embodiments, as shown in fig. 4 and 5, a transition port 206 is provided on the base housing 20. Diaphragm assembly 30 covers transition port 206. When the throttle hole 201 projects to the plane of the transition port 206, the transition port 206 is spaced from the throttle hole 201. Specifically, when the local portion of diaphragm assembly 30 has deformability, if the outer edge portion of diaphragm assembly 30 abuts against the edge of transition port 206, the middle portion of diaphragm assembly 30 can move relative to transition port 206 under the deformation action. Since the degree of deformation of the diaphragm assembly 30 is affected by the pressure difference between the first and second inner chambers 31 and 32, the compression length of the elastic member 60 can correspond to the change in the pressure difference. The diaphragm assembly 30 is activated to adjust the opening of the overflow outlet 202, so as to change the flow rate of the water overflowing from the overflow outlet 202, thereby maintaining a constant pressure difference between the first inner chamber 31 and the second inner chamber 32. According to the orifice flow equation, the flow of water through the orifice 201 and out the output port 205 will remain uniform while the pressure differential across the orifice 201 remains constant. More specifically, the plane of the transition port 206 can be understood as a plane that allows the transition port 206 to have the largest projected area. Due to the separation between the transition port 206 and the throttle hole 201, the interference between the machining of the transition port 206 and the machining of the throttle hole 201 can be avoided, and the machining process can be carried out by using the tool spindle with the same angle. More specifically, the machining of the transition port 206 or the throttle hole 201 may be cutting, grinding, or the like to adjust the hole diameter, or to remove burrs.

In some embodiments, as shown in connection with FIG. 5, the output port 205 is disposed on a side of the orifice hole 201 facing away from the transition port 206. In particular, since the outlet 205 needs to direct water flow to an external device, when the outlet 205 is disposed on a side of the orifice hole 201 opposite to the transition port 206, it is possible to facilitate the outlet 205 to be docked with other pipes. Further, a flow pipe 22 is connected to the outside of the base shell 20, and the flow pipe 22 is connected to the output port 205. A drainage tube is sleeved over the flow tube 22 so that the drainage tube is docked to the outlet 205. In one embodiment, the transfer line 22 communicates to the spray gun module via a drain line.

In some embodiments, as shown in fig. 4 to 6, the side of the base housing 20 facing the outer cover 40 is provided with a receiving groove 207. The groove wall of the receiving groove 207 is disposed around the transition opening 206, and the outer cover 40 is at least partially received in the receiving groove 207. In particular, in the case where a portion of the outer cover 40 is received in the receiving groove 207, the area of the opposite surface between the outer cover 40 and the base housing 20 can be increased, which is advantageous in preventing the water flow in the second inner chamber 32 from leaking along the gap between the base housing 20 and the outer cover 40. Specifically, the outer cover 40 has a first flange portion 43, the first flange portion 43 is received in the receiving groove 207, and the outer edge of the first flange portion 43 has a shape corresponding to the groove wall of the receiving groove 207, so as to reduce the gap between the first flange portion 43 and the groove wall of the receiving groove 207. The constant flow valve 100 further includes a first sealing member 44, and the first sealing member 44 is disposed around the first flange portion 43 and is abutted between the first flange portion 43 and a groove wall of the receiving groove 207 to prevent the medium in the second cavity 32 from leaking. Further, the side wall of the first flange portion 43 for fitting the groove wall of the receiving groove 207 is provided with a groove 431, and the first seal 44 is at least partially received in the groove 431 to limit the first seal 44.

In some embodiments, as shown in fig. 1 and 5, a mounting block 21 is attached to the outside of the base housing 20. Specifically, when the orifice 201, the inner valve hole 203, the input port 204, or the output port 205 needs to be machined in the base housing 20, the fixture may be used to connect the mounting block 21, so as to position the base housing 20 by using the mounting block 21, and subsequently, machining of the orifice 201, the inner valve hole 203, the input port 204, or the output port 205 by using an automatic machining device may be facilitated. Further, when the constant flow valve 100 is assembled into the sanitary equipment, the constant flow valve 100 can be installed and connected with other devices in the sanitary equipment through the installation block 21. In one embodiment, the mounting block 21 is provided with a slot 211 to pass through the fastener. In another embodiment, the mounting block 21 is provided with a through hole.

In some embodiments, as shown in conjunction with fig. 4 and 5, baffle assembly 30 includes a flexible sheet 34 and a clamp block 35. Flexible sheet 34 is used to form a peripheral portion of diaphragm assembly 30. The clamping block 35 is attached to the middle portion of the flexible sheet 34 to maintain the middle portion of the flexible sheet 34 in a stable shape, and the valve core 50 is connected to the clamping block 35, so that the displacement amount of the valve core 50 relative to the base shell 20 and the spatial variation amount of the first inner cavity 31 or the second inner cavity 32 are close to a linear relationship. In one embodiment, the two sides of the flexible sheet 34 are respectively attached with the clamping blocks 35, further, the clamping block 35 located at one side of the second inner cavity 32 is in threaded connection with the valve core 50, and the clamping block 35 located at one side of the first inner cavity 31 is abutted by the valve core 50, so that the middle of the flexible sheet 34 is abutted between the two clamping blocks 35, and a stable shape is maintained, so as to serve as the middle of the partition plate assembly 30. More specifically, one end of the elastic member 60 is positioned at the clamping block 35 at one side of the second inner cavity 32.

In some embodiments, as shown in fig. 4 and 6, the outer cover 40 is provided with a snap ring portion 41, and the outer edge portion of the baffle plate assembly 30 is abutted between the snap ring portion 41 and the edge of the transition opening 206. Due to the pressure of the clamping ring portion 41, the outer edge portion of the baffle plate assembly 30 can be kept attached to the edge of the transition port 206, and the water flow in the first inner cavity 31 is prevented from leaking to the second inner cavity 32 along the gap between the baffle plate assembly 30 and the transition port 206. More specifically, the shape of the snap ring portion 41 corresponds to the shape of the edge of the transition port 206. Further, the outer cover 40 is provided with a passage 411 passing through the collar portion 41, so as to avoid the second inner cavity 32 being partitioned due to the arrangement of the collar portion 41, and prevent the medium pressure borne by the diaphragm assembly 30 from being affected. Specifically, the flexible sheet 34 abuts between the snap ring portion 41 and the edge of the transition opening 206. More specifically, the first collar portion 43 is partially integrated with the collar portion 41.

In some embodiments, as shown in fig. 3 and 4, the outer cover 40 is formed with a leg portion 42, and the leg portion 42 is disposed opposite to the diaphragm assembly 30. One end of the elastic member 60 is fitted over the support tube 42. Specifically, a portion of the outer cover 40 opposite to the baffle plate assembly 30 may be concavely deformed to form the leg portion 42. With respect to the arrangement of the fulcrum portion 42 opposite to the diaphragm assembly 30, it can be understood that the relative direction between the fulcrum portion 42 and the diaphragm assembly 30 is parallel to the movable deformation direction of the diaphragm assembly 30 relative to the base housing 20. The elastic member 60 is held between the diaphragm assembly 30 and the outer cover 40 in the movable deformation direction of the diaphragm assembly 30 with respect to the base housing 20. One end of the elastic member 60 is sleeved on the support tube part 42, so that the position of one end of the elastic member 60 can be limited. In one embodiment, the resilient member 60 is a compression spring.

In some embodiments, as shown in fig. 3 and 4, the constant flow valve 100 further includes a first sub-housing 70 connected to the base housing 20, and the orifice 201 is between the first sub-housing 70 and the outer cover 40. Specifically, since the orifice 201 has one end connected to the first internal chamber 31 and the other end connected to the second internal chamber 32, the position of the base shell 20 where the orifice 201 is provided is exposed before the base shell 20 is connected to the first sub-shell 70 and the outer cover 40, so that the orifice 201 can be easily machined in the base shell 20. More specifically, the base housing 20 is suspended in a direction in which the port of the orifice 201 faces out, so that the processing of the orifice 201 is not affected without connecting the first sub-housing 70 and the outer cover 40.

In some embodiments, as shown in fig. 2 and 4, the installation path of the first partial shell 70 is parallel to the communication direction of the orifice 201. An overflow pipe 24 is connected to the outer side of the base shell 20, and the overflow pipe 24 is communicated with an overflow outlet 202. The outer end of overflow tube 24 faces away from the installation path of first sub-shell 70. Specifically, the communication direction of the orifice 201 may be understood as the overall flow direction of water when passing through the orifice 201. Further, the first sub-housing 70 has a second flange portion 71, and the second flange portion 71 is embedded in the base housing 20. The wall surface of the base case 20 for bonding the second flange portion 71 is parallel to the communication direction of the orifice 201, and the first sub-case 70 is attached to the base case 20 along a path parallel to the communication direction of the orifice 201 by the restriction of the wall surface. Another external drainage pipe is sleeved on the overflow pipe 24, so that the overflow pipe 24 is communicated with the overflow outlet 202, and the overflowed water flow is guided to a corresponding position in the sanitary ware. Specifically, the space through which any portion on the first sub-housing 70 passes forms a spatial range when the first sub-housing 70 moves along the installation path. Thus, for the outer end of overflow tube 24 to face away from the installation path of first sub-shell 70, it can be understood that no part of overflow tube 24 intersects the spatial extent of first sub-shell 70. So that the arrangement of the overflow pipe 24 can be prevented from affecting the installation of the first partial shell 70. More specifically, first lumen 31 communicates to overflow tube 24 via overflow outlet 202.

In some embodiments, as shown in fig. 3 and 4, the valve element 50 has an adjustment portion 51, and the adjustment portion 51 has a large end 52 and a small end 53. In the case where the outer diameter of the regulating portion 51 is perpendicular to the line between the large end 52 and the small end 53, the average outer diameter of the regulating portion 51 decreases from the large end 52 to the small end 53. Specifically, the direction pointing from the large end 52 to the small end 53 faces away from the diaphragm assembly 30. When the regulating portion 51 is located at different positions relative to the edge of the inner valve hole 203, the regulating portion 51 cooperates with the edge of the inner valve hole 203 with different cross sections to form the boundary of the overflow port 202, thereby forming the overflow port 202 with different areas, so that the flow rate of the first inner chamber 31 overflowing from the overflow port 202 is regulated. Further, the base housing 20 has a cylindrical portion 23, and the cylindrical portion 23 is disposed around the internal valve hole 203. The constant flow valve 100 further includes a second sub-housing 80 partially fitted in the cylindrical portion 23. The end of the valve core 50 far away from the partition plate assembly 30 is in nested fit with the second sub-shell 80 to limit the moving direction of the valve core 50 and the partition plate assembly 30, and improve the moving stability of the partition plate assembly 30. More specifically, the overflow pipe 24 is connected to the cylindrical portion 23, and communicates with the inside of the cylindrical portion 23.

In some embodiments, as shown in fig. 3 and 5, the base housing 20 is provided with a control port 208, and the communication path between the input port 204 and the first lumen 31 passes through the control port 208. The constant flow valve 100 further includes a switch unit 90, and the switch unit 90 includes a plug body 91 movably disposed with respect to the control port 208 and an electromagnetic member 92 for controlling the plug body 91 to move with respect to the control port 208. At least a portion of the plug body 91 is attracted by magnetic force, and the plug body 91 can stop the communication path between the input port 204 and the first inner cavity 31 by abutting against the edge of the control port 208, so as to prevent water from entering the first inner cavity 31. The current state passed by the electromagnetic member 92 can control the generation or disappearance of the magnetic field, or the strength of the magnetic field in the vicinity of the plug 91. In one embodiment, the electromagnet 92 is a coil.

More specifically, as the pressure of the water flow entering input port 204 increases, the pressure of the medium within first chamber 31 increases, and the pressure of the medium exerted by the liquid within first chamber 31 against diaphragm assembly 30 increases because the pressure of the medium is the product of the pressure of the liquid and the area of diaphragm assembly 30 under force. Under the condition that the pressure of the medium in the second inner cavity 32 is unchanged, the diaphragm assembly 30 deforms towards the direction of compressing the second inner cavity 32 until the elastic member 60 obtains larger elastic force due to the increase of the deformation amount, and the increased medium pressure of the first inner cavity 31 to the diaphragm assembly 30 is balanced. When the diaphragm assembly 30 is deformed in a direction to compress the second internal chamber 32, the valve element 50 moves with the diaphragm assembly 30, and the large end 52 of the regulating portion 51 moves away from the internal valve hole 203, so that the area of the overflow port 202 increases, and the flow rate overflowing from the overflow port 202 increases. Thereafter, the pressure in the first inner chamber 31 is reduced, so that the pressure difference between the first inner chamber 31 and the second inner chamber 32 can be restored. The liquid in the first inner cavity 31 enters the inner side of the second sub-shell 80 through the overflow outlet 202. Thereafter, the water inside the second partial shell 80 is discharged through the overflow pipe 24. In one embodiment, overflow tube 24 communicates to the reservoir via a drain line.

As the pressure of the water flow entering inlet port 204 decreases, the pressure of the medium within first chamber 31 decreases and the pressure of the medium exerted by the liquid within first chamber 31 against diaphragm assembly 30 decreases. Under the condition that the pressure of the medium in the second inner cavity 32 is unchanged, the diaphragm assembly 30 deforms towards the direction of compressing the first inner cavity 31 until the elastic force of the elastic element 60 is reduced due to the reduction of the deformation amount, and the reduced pressure of the medium on the diaphragm assembly 30 by the first inner cavity 31 is balanced. When the diaphragm assembly 30 is deformed in a direction to compress the first internal chamber 31, the valve element 50 moves along with the diaphragm assembly 30, and the large end 52 of the regulating portion 51 moves closer to the internal valve hole 203, so that the area of the overflow port 202 is reduced, and the flow rate overflowing from the overflow port 202 is reduced. Thereafter, the pressure in the first inner chamber 31 will rise, so that the pressure difference between the first inner chamber 31 and the second inner chamber 32 can be restored.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A constant flow valve has a first inner cavity, an overflow outlet and a second inner cavity; overflow mouth communicates in first inner chamber, its characterized in that, the constant flow valve includes:

the base shell is provided with a throttling hole, an internal valve hole, an input port and an output port;

a diaphragm assembly cooperating with the base housing to define a boundary of the first interior cavity; the first inner cavity is communicated with the input port;

an outer cover cooperating with the base housing to define a boundary of the second interior chamber, the second interior chamber communicating with the first interior chamber through the orifice; the second inner cavity is communicated with the output port;

a valve core connected to the diaphragm assembly; the valve core is also matched with the edge of the inner valve hole to form the boundary of the overflow outlet; and

a resilient member coupled to the diaphragm assembly and configured to at least partially equalize a pressure of the medium in the first interior chamber beyond the second interior chamber.

2. The constant flow valve according to claim 1, further comprising a first split housing connected to the base housing, the orifice being between the first split housing and the outer cover.

3. The constant flow valve according to claim 2, wherein a mounting path of the first sub-housing is parallel to a communication direction of the orifice; an overflow pipe is connected to the outer side of the base shell and communicated with the overflow port; the outer end of the overflow pipe faces away from the installation path of the first partial shell.

4. The constant flow valve according to claim 1, wherein the base housing is provided with a transition port; the clapboard component covers the transition port; when the throttling hole projects to the plane of the transition port, the transition port and the throttling hole are arranged in a separated mode.

5. The constant flow valve according to claim 4, wherein the output port is provided on a side of the orifice hole facing away from the transition port.

6. The constant flow valve according to claim 4, wherein a side of the base housing facing the outer cap is provided with a receiving groove; the groove wall of the accommodating groove is arranged around the transition port, and the outer cover is at least partially accommodated in the accommodating groove.

7. The constant flow valve of claim 4, wherein the outer cover is provided with a collar portion, and wherein the outer rim portion of the diaphragm assembly is supported between the collar portion and the edge of the transition opening.

8. The constant flow valve according to claim 1, wherein the outer cover is formed with a leg portion disposed opposite to the diaphragm assembly; one end of the elastic piece is sleeved on the supporting cylinder part.

9. The constant flow valve according to claim 1, wherein a mounting block is attached to an outside of the base housing.

10. Sanitary installation comprising a constant flow valve according to any of claims 1 to 9.

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