Automatic switching valve
Technical Field
The utility model relates to the technical field of bathroom switching valves, in particular to an automatic switching valve.
Background
A plurality of existing bathroom water equipment can be additionally provided with a spray gun or a handheld shower head in the original function, and therefore branch water paths need to be arranged. In order to facilitate control, a switch for controlling the on-off of the water flow of the spray gun or the handheld shower head is often directly arranged on the spray gun or the handheld shower head, for example, the spray gun is additionally arranged on a toilet bowl angle valve, the handheld shower head is additionally arranged on the basis of shower top spraying, and the like. In the using process, in order to ensure the water flow of the spray gun or the shower head, the water flow of another waterway needs to be cut off, so the existing sanitary equipment with the spray gun or the shower head is provided with a switching valve.
As shown in chinese patent No. 201020122220.9 entitled push-button semi-automatic switching valve, when the switching valve is in an initial state, the water inlet is always communicated with the main water outlet, and when water needs to be switched to a branch water outlet, a button needs to be pressed, so as to manually change the flow direction of the water. When the branch water outlet is closed, the button is automatically reset, and the water inlet is restored to be communicated with the main path water outlet. Although the switching valve can realize the function of switching the water flow direction, the switching valve still needs manual operation in the use process, and is inconvenient to use.
SUMMERY OF THE UTILITY MODEL
In view of the shortcomings of the prior art, the utility model aims to provide an automatic switching valve which can automatically switch the water outlet direction according to the opening and closing state of a branch water outlet.
The technical purpose of the utility model is realized by the following technical scheme: the utility model provides an automatic switching valve, which comprises a valve body, the valve body is the T font, the valve body middle part is provided with the water inlet, the valve body both ends are provided with main delivery port and branch road delivery port respectively, the water inlet, main delivery port and branch road delivery port all communicate with the inside cavity of valve body, install the disk seat in the cavity, wear to be equipped with the valve rod in the disk seat, the cover is equipped with main manger plate piece and branch road manger plate piece respectively at the valve rod both ends, be provided with spacing step on the disk seat, the orifice has been seted up at spacing step middle part, the spring is installed between the one end that the valve rod set up main manger plate piece and the spacing step, the pressurized area of branch road manger plate piece is greater than the pressurized area of main manger plate piece.
Through above-mentioned technical scheme, the valve body is the T font, and the water inlet is in the valve body middle part, and main delivery port and branch road delivery port are in the valve body both ends, can flow out from main delivery port or branch road delivery port comparatively smoothly when rivers flow in from the valve body middle part, and hydraulic loss is less, can keep great through-flow volume. When the spray gun or the shower head connected with the branch water outlet is in a closed state, the switching valve is in an initial state, and the main water blocking block is far away from the throttling hole under the action of the spring, so that the main water outlet and the water inlet are always kept in a communicated state. When a spray gun or a shower head connected with the branch water outlet is opened, the water pressure at the rear end of the branch water retaining block is reduced, the branch water retaining block moves towards the branch water outlet under the action of pressure difference, and the main water retaining block is pulled by the valve rod to move towards the throttling hole to block the throttling hole, so that water flows towards the branch water outlet. When the spray gun connected with the branch water outlet is closed again, the water pressures at the two ends of the branch water retaining block are recovered to be consistent again, and the main water retaining block moves towards the main water outlet direction under the action of the spring, so that the main water outlet is communicated with the water inlet again.
Preferably, the whole branch water retaining block is frustum-shaped, and the end face of the larger end of the branch water retaining block is provided with a deformation groove, so that the edge of the rear end of the branch water retaining block forms a water sealing lip which can deform towards the deformation groove.
Through above-mentioned technical scheme, the branch road water retaining piece front end is big, and the rear end is little to the back shield edge is the water sealing lip of variability, makes when the branch road water route is opened, and the area that the branch road water retaining piece received the water pressure effect is great, and the valve rod can remove to branch road delivery port direction rapidly, cuts off the rivers of main delivery port, makes rivers flow direction branch road delivery port. Meanwhile, the water sealing lip can deform towards the direction of the deformation groove, so that a larger water flow channel is formed between the branch water retaining block and the inner wall of the valve body, and the water flow of the branch water outlet is ensured.
Preferably, the two ends of the valve rod are respectively provided with a limiting part for limiting the main water retaining block and the branch water retaining block.
Through the technical scheme, the position of the main water retaining block and the position of the branch water retaining block can be conveniently limited by the limiting part, and the main water retaining block or the branch water retaining block is prevented from axially sliding on the valve rod.
Preferably, a chamfer is arranged on the limiting part of the valve rod facing the branch water outlet.
Through the technical scheme, the installation of the main water retaining block and the branch water retaining block can be facilitated by the arrangement of the chamfer.
Preferably, an annular groove is formed in the branch water retaining block.
Through the technical scheme, the annular groove is arranged, so that the branch water retaining block can be deformed conveniently, and the branch water retaining block can penetrate through the limiting part from the end part of the valve rod conveniently and is sleeved on the valve rod.
Preferably, the side of the main water block facing the throttle hole is spherical.
Through the technical scheme, the main water blocking block is arranged to be matched with the throttling hole conveniently, so that water flow at the throttling hole is cut off.
Preferably, a step surface is arranged in the valve body, the side surface of the valve seat is abutted against the step surface, a plug is installed at the position of the main water outlet, a water flow channel is formed in the middle of the plug, and the inner end of the plug is abutted against the outer end of the valve seat.
Through the technical scheme, the valve seat can be conveniently installed in the valve body, and the valve seat is prevented from being separated from the valve body.
Preferably, the outer end of the plug is sleeved with a joint with internal threads, and the inner end of the joint is clamped with the outer end of the plug.
Through the technical scheme, the main water outlet can be conveniently connected with the pipeline.
Preferably, the inner wall of one end of the valve seat close to the main water outlet is in a conical surface shape with a large outer end and a small inner end.
Through the technical scheme, the valve seat is arranged to be matched with the shape of the main water retaining block, so that a certain space is always kept between the inner wall of the valve seat and the main water retaining block for water to flow through, and the flow of the main water outlet is ensured.
Preferably, the inner wall of the valve seat at the outer side of the main water retaining block is provided with a limiting block for limiting the sliding direction of the main water retaining block.
Through above-mentioned technical scheme, the stopper can restrict the quick slip direction of main manger plate, avoids the valve rod tip to take place great swing at the slip in-process, leads to the valve rod to slide and takes place the jamming, and the unable quick reset of valve rod when leading to the branch road delivery port to open influences the play water of branch road delivery port.
Compared with the prior art, the utility model has the beneficial effects that: can be according to the on-off state automatic switch-over water direction with the branch road delivery port, the water route is arranged comparatively rationally simultaneously, and rivers flow comparatively smoothly, and the through flow is great.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment;
FIG. 2 is a schematic sectional view of a valve seat portion in the embodiment;
FIG. 3 is a perspective view of the valve stem and water stop portion of the embodiment;
FIG. 4 is a schematic sectional view of the valve stem and the water stopper in the embodiment;
FIG. 5 is a perspective view of the side of the valve seat near the main water outlet in the embodiment;
FIG. 6 is a schematic sectional view of a valve seat in the embodiment.
Reference numerals: 1. a valve body; 2. a water inlet; 3. a main water outlet; 4. a branch water outlet; 5. a valve seat; 6. a valve stem; 7. a main water retaining block; 8. a branch water retaining block; 9. a limiting step; 10. an orifice; 11. a spring; 12. a deformation groove; 13. sealing the water lip; 14. a limiting part; 15. chamfering; 16. an annular groove; 17. spherical surface; 18. a step surface; 19. a plug; 20. a water flow channel; 21. a joint; 22. and a limiting block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
As shown in fig. 1-6, the automatic switching valve comprises a valve body 1, wherein the valve body 1 is integrally T-shaped, a water inlet 2 is formed in the middle of the valve body 1, and a main water outlet 3 and a branch water outlet 4 are formed in two ends of the valve body 1 respectively. The main water outlet 3 and the branch water outlet 4 are coaxially arranged, and the axis of the water inlet 2 is simultaneously vertical to the axis of the main water outlet 3 and the axis of the branch water outlet 4. The water inlet 2, the main water outlet 3 and the branch water outlet 4 are all communicated with a cavity inside the valve body 1.
A valve seat 5 is arranged in a cavity inside the valve body 1, and the axial direction of the valve seat 5 is consistent with the axial direction of the main water outlet 3 and the axial direction of the branch water outlet 4. A valve rod 6 is axially arranged in the valve seat 5, and the valve rod 6 penetrates through the middle of the valve seat 5 and can slide in the valve seat 5. The two ends of the valve rod 6 are respectively sleeved with a main water retaining block 7 and a branch water retaining block 8. The inside spacing step 9 that is provided with of one end that the disk seat 5 is close to main delivery port 3, and orifice 10 has been seted up at spacing step 9 middle part, and the water that water inlet 2 flowed in can flow into disk seat 5 inside and follow orifice 10 and flow to main delivery port 3 from disk seat 5 side. A spring 11 is arranged between the limiting step 9 and the end part of the valve rod 6 at one side of the main water outlet 3, and the spring 11 can move the main water blocking block 7 to the direction far away from the throttling hole 10 and keep the main water blocking block in the state. At the moment, the branch water blocking block 8 is abutted against the end part of the valve seat 5 close to the branch water outlet 4 under the action of the valve rod 6. At this time, the automatic switching valve is in an initial state, and the main water outlet 3 is kept in an open state.
The maximum outer diameter of the main water retaining block 7 is smaller than that of the branch water retaining block 8, so that when the main water retaining block 7 is under the action of water inlet pressure, the pressure area is smaller than that of the branch water retaining block 8. When the spray gun communicated with the branch water outlet 4 is opened, pressure difference is generated on two sides of the branch water retaining block 8, and the pressed area of the branch water retaining block 8 is larger than that of the main water retaining block 7, so that the branch water retaining block 8 slides towards the direction of the branch water outlet 4 under the action of water pressure, and the valve rod 6 is driven to slide towards the direction of the branch water outlet 4 integrally until the main water retaining block 7 is abutted against the throttling hole 10, and the water flow of the main water outlet 3 is sealed. After the spray gun connected with the branch water outlet 4 is closed, the water pressure at two sides of the branch water retaining block 8 is the same, no pressure difference exists, the main water retaining block 7 is far away from the throttling hole 10 under the action of the spring 11, and water flow can normally pass through the main water outlet 3 to restore the initial state.
The branch water retaining block 8 is integrally frustum-shaped, and one end of the branch water retaining block 8 close to the main water outlet 3 is small, and the other end of the branch water retaining block close to the branch water outlet 4 is large. The end surface of the larger end of the branch water retaining block 8 is provided with a deformation groove 12. After the deformation groove 12 is arranged, the edge of the branch water retaining block 8 outside the deformation groove 12 forms a water sealing lip 13, and the water sealing lip 13 can deform towards the middle of the branch water retaining block 8 easily, so that the through-flow space between the branch water retaining block 8 and the inner wall of the valve body 1 is increased, and the water flow of the branch water outlet 4 is ensured.
Two limiting parts 14 are respectively arranged at two ends of the valve rod 6, and the main water retaining block 7 and the branch water retaining block 8 are respectively arranged between the two limiting parts 14, so that the main water retaining block 7 and the branch water retaining block 8 are prevented from sliding on the valve rod 6. A chamfer 15 is arranged on a limiting part 14 of the valve rod 6 facing the branch water outlet 4, and the main water retaining block 7 and the branch water retaining block 8 can be conveniently arranged on the valve rod 6 through the chamfer 15. The branch water retaining block 8 is internally provided with an annular groove 16, the annular groove 16 is communicated with the deformation groove 12, and the deformation capacity of the branch water retaining block 8 is increased, so that the branch water retaining block 8 can be conveniently installed on the valve rod 6.
One side of the main water blocking block 7 facing the throttling hole 10 is a spherical surface 17, when the main water blocking block 7 is abutted to the throttling hole 10, the spherical surface of the main water blocking block 7 can be well sealed with the throttling hole 10, the sealing effect is guaranteed, and water leakage of the main water outlet 3 is avoided.
A step surface 18 is arranged in the valve body 1, the side surface of the valve seat 5 is abutted against the step surface 18, a plug 19 is arranged on the side of the main water outlet 3, the plug 19 is in threaded connection with the valve body 1, the inner end of the plug 19 tightly presses the valve seat 5 on the step surface 18, and the valve seat 5 is prevented from sliding in the valve body 1. The middle part of the multiple head is provided with a water flow channel 20 for water to flow out. The outer side of the outer end of the plug 19 is sleeved with a joint 21 with internal threads, the inner end of the joint 21 is clamped with the outer end of the plug 19, and the joint and the plug can rotate relatively. When the automatic switching valve is installed, the joint 21 can be connected with a pipe fitting with an external thread, so that the automatic switching valve is convenient to install.
The inner wall of one end of the valve seat 5 close to the water outlet is in a conical surface shape with a large outer end and a short inner part. The inner wall of the valve seat 5 is arranged to be matched with the spherical surface of the main water retaining block 7, so that a larger space is reserved between the outer surface of the main water retaining block 7 and the inner wall of the valve seat 5 for water to pass through. The inside stopper 22 that carries out the restriction to the 7 slip directions of main manger plate piece that still is provided with of disk seat 5 in the main manger plate piece 7 outside, stopper 22 are the wedge, and the circumference equipartition is in the 7 outsides of main manger plate piece, and stopper 22 is parallel with 5 axial directions of disk seat towards the surface of main manger plate piece 7.
The above description is intended to be illustrative of the present invention and not to limit the scope of the utility model, which is defined by the claims appended hereto.