Flow double-adjusting water inlet valve

Abstract

The utility model discloses a flow double regulation water inlet valve, which comprises a shell, a flow limiting device and an on-off valve, the shell comprises a water inlet, a first mounting cavity and a plate exchange inlet, the water inlet, the first mounting cavity, the flow limiting device and the plate exchange inlet form a first water inlet waterway, and the water inlet, the first mounting cavity, the on-off valve and the plate exchange inlet form a second water inlet waterway. The second water inlet path is opened and closed through an on-off valve. By arranging the first water inlet waterway and the second water inlet waterway, the problem of insufficient flow in summer is solved, and the user experience feeling is good.

Description

Technical Field

[0001] The utility model relates to a water inlet valve, and more particularly to a flow rate dual-adjustable water inlet valve. Background Art

[0002] At present, the water inlet valves of wall-mounted boilers are mostly single-channel designs, and the cold water flow is maintained within a certain range through a flow limiting device. In order to meet the requirement of quickly raising the water temperature in the cold winter, the flow of cold water after passing through the flow limiting device will be greatly reduced, thereby ensuring the water demand in winter. In summer, due to the increase in ambient temperature, the cold water temperature will also increase accordingly, but because there is only a single flow channel in the water inlet valve, it is impossible to enjoy a large flow of water in the summer, and the user experience is poor, so there is an urgent need for improvement. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a flow dual-adjustable water inlet valve, which solves the problem of insufficient flow in summer by setting a first water inlet waterway and a second water inlet waterway, and provides a good user experience.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a flow dual-adjustable water inlet valve, including a shell, a flow limiting device and an opening and closing valve, the shell including a water inlet, a first installation cavity and a plate exchange inlet, the water inlet, the first installation cavity, the flow limiting device and the plate exchange inlet form a first water inlet waterway, the water inlet, the first installation cavity, the opening and closing valve and the plate exchange inlet form a second water inlet waterway, and the second water inlet waterway is opened and closed by the opening and closing valve.

[0005] Furthermore, the shell includes a connecting platform and a second mounting cavity, a liquid passage cavity is provided in the connecting platform, the liquid passage cavity is connected to the plate exchange inlet through a connecting port, the two ends of the second mounting cavity are respectively connected to the first mounting cavity and the liquid passage cavity, and the current limiting device is inserted into the second mounting cavity and fixed.

[0006] Furthermore, the housing includes a third installation cavity, the third installation cavity is communicated with the first installation cavity, and the third installation cavity is communicated with or blocked by the liquid transfer cavity via an opening and closing valve.

[0007] Furthermore, the on-off valve includes a valve seat and a valve body, the valve seat includes a base, one side of the base abuts against the side of the connecting platform, a first boss is provided on the side of the base, the first boss is inserted into the liquid cavity and sealed with the inner wall of the liquid cavity, a second through hole is provided in the first boss, the second through hole is connected to the liquid cavity, and the second through hole is connected to or blocked by the third mounting cavity through the valve body.

[0008] Furthermore, a second boss is provided on the side of the first boss, the second boss is inserted into the third mounting cavity, the side wall of the second boss is sealed with the inner wall of the third mounting cavity, a first through hole is provided in the second boss, the first mounting cavity is connected with the first through hole, the valve body includes a valve stem, the valve stem can move to block one end of the second through hole or disengage from the second through hole, and the first through hole and the second through hole are connected or blocked through the valve stem.

[0009] Furthermore, the on-off valve is fixed to the shell by a screw, the valve seat and the valve body are fixed by screws, a socket is provided on the side of the connecting platform, the socket connects the two sides of the connecting platform, an annular groove is provided on the outside of the first boss, the screw passes through the socket, and the part of the screw located in the liquid cavity is embedded in the annular groove.

[0010] Furthermore, a rib is provided on the side surface of the first boss, and an end of the rib abuts against a side of the current limiting device away from the first installation cavity.

[0011] Furthermore, the shell includes a plate exchange outlet and a water pump interface, and the plate exchange outlet is communicated with the water pump interface.

[0012] Furthermore, the shell includes a heating return water interface, an expansion water tank interface, a safety valve interface, a water passage and a water supply valve interface. The plate exchange outlet, water pump interface, heating return water interface, expansion water tank interface and safety valve interface are all connected to the water passage, and the water supply valve interface end is connected to the water supply valve.

[0013] Furthermore, the on-off valve is a solenoid valve, and a flow sensor is installed in the first installation cavity.

[0014] In summary, the present invention has the following beneficial effects:

[0015] When used in winter, the on-off valve is closed and the second water inlet water channel is closed. At this time, cold water only flows into the plate heat exchanger from the plate heat exchanger inlet through the first water inlet water channel. After the cold water passes through the flow limiting device, the flow rate is reduced, thereby ensuring a smaller flow range while ensuring a rapid supply of hot water in winter to meet the user's needs; when used in summer, the on-off valve is opened and the second water inlet water channel is opened, and cold water enters the plate heat exchanger from the first water inlet water channel and the second water inlet water channel. The water inlet flow is large, so that a large flow of water can be enjoyed in summer, and the user experience is good. The dual-channel design of the first water inlet water channel and the second water inlet water channel is adopted in the shell, which can greatly enrich the user's water demand and effectively meet the needs of users in areas with large temperature differences between winter and summer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of this embodiment;

[0017] Figure 2It is a rear view of this embodiment;

[0018] Figure 3 is a cross-sectional view of this embodiment;

[0019] Figure 4 is a cross-sectional view of this embodiment;

[0020] Figure 5 It is a partial cross-sectional view of this embodiment;

[0021] Figure 6 is a schematic structural diagram of the shell;

[0022] Figure 7 Schematic diagram of the structure of the valve seat;

[0023] Figure 8 This is the waterway diagram of the dual-adjustment waterway in this embodiment.

[0024] Figure numerals: 1. Shell; 101. Water inlet; 102. First installation cavity; 103. Second installation cavity; 104. Liquid passage cavity; 105. Communication port; 106. Plate exchange inlet; 107. Third installation cavity; 108. Connecting platform; 109. Plate exchange outlet; 110. Water pump interface; 111. Heating return water interface; 112. Expansion tank interface; 113. Safety valve interface; 114. Water passage; 115. Socket; 116. Water supply valve interface; 2. Flow limiting device; 3. Opening and closing valve; 4. Valve seat; 41. Base; 42. First boss; 43. Second boss; 44. First through hole; 45. Second through hole; 46. Raised rib; 47. Annular groove; 5. Valve body; 51. Valve stem; 6. Flow sensor; 7. Wire cutter; 8. Water supply valve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figures 1 to 8 As shown, this embodiment discloses a flow dual-adjustable water inlet valve, including a shell 1, a flow limiting device 2 and an on-off valve 3, the shell 1 includes a water inlet 101, a first installation cavity 102 and a plate exchange inlet 106, the water inlet 101, the first installation cavity 102, the flow limiting device 2 and the plate exchange inlet 106 form a first water inlet waterway, the water inlet 101, the first installation cavity 102, the on-off valve 3 and the plate exchange inlet 106 form a second water inlet waterway, and the second water inlet waterway is opened and closed by the on-off valve 3.

[0027] A flow sensor 6 is installed in the first installation cavity 102. The flow sensor 6 is used to detect the flow of cold water entering from the water inlet 101. The flow sensor 6 and the installation structure of the flow sensor 6 and the first installation cavity 102 are existing technologies. Their specific structure and working principle are not described in detail in this specification. In the water inlet waterway (the first water inlet waterway and the second water inlet waterway), the cold water flowing out of the first installation cavity 102 must pass through the flow sensor 6.

[0028] When used in winter, the on-off valve 3 is closed and the second water inlet waterway is closed. At this time, cold water only flows into the plate heat exchanger (not shown in the figure) from the plate heat exchanger inlet 106 through the first water inlet waterway. After the cold water passes through the flow limiting device 2, the flow rate is reduced, thereby ensuring a small flow range while ensuring a rapid supply of hot water in winter to meet the user's needs; when used in summer, the on-off valve 3 is opened and the second water inlet waterway is opened. Cold water enters the plate heat exchanger from the first water inlet waterway and the second water inlet waterway. The water inlet flow rate is large, so that a large flow of water can be enjoyed in summer, and the user experience is good. The dual-channel design of the first water inlet waterway and the second water inlet waterway is adopted in the shell 1, which can greatly enrich the user's water demand and can effectively meet the needs of users in areas with large temperature differences between winter and summer.

[0029] like Figure 4 and Figure 6 As shown, the shell 1 includes a connecting platform 108 and a second installation cavity 103, and a liquid flow cavity 104 is provided in the connecting platform 108. The liquid flow cavity 104 is connected to the plate exchange inlet 106 through a connecting port 105. The two ends of the second installation cavity 103 are respectively connected to the first installation cavity 102 and the liquid flow cavity 104. The flow limiting device 2 is inserted into the second installation cavity 103 and fixed. The side wall of the flow limiting device 2 is sealed with the inner wall of the second installation cavity 103. The flow limiting device 2 is a prior art, and its specific structure and flow limiting principle are not repeated in this specification. In the first water path, the cold water passes through the flow limiting device 2 and enters the liquid flow cavity 104, and then enters the plate exchange inlet 106 from the connecting port 105.

[0030] like Figure 4As shown, the housing 1 includes a third mounting cavity 107, the third mounting cavity 107 is communicated with the first mounting cavity 102, the second mounting cavity 103 and the third mounting cavity 107 are both located in the connecting platform 108, the third mounting cavity 107 is communicated with or blocked by the liquid passage cavity 104 through the on-off valve 3, specifically, the on-off valve 3 includes a valve seat 4 and a valve body 5, the valve seat 4 and the valve body 5 are fixed by screws, the valve seat 4 includes a base 41, one side of the base 41 abuts against the side of the connecting platform 108, the side of the base 41 is provided with a first boss 42, the first boss 42 is inserted into the liquid passage cavity 104 and is sealed with the inner wall of the liquid passage cavity 104, and the first boss 42 is provided with a first boss 42. Two through holes 45, the second through hole 45 is connected to the liquid chamber 104, the second through hole 45 is connected to or blocked by the third installation chamber 107 through the valve body 5, a second boss 43 is provided on the side of the first boss 42, the second boss 43 is inserted into the third installation chamber 107, the side wall of the second boss 43 is sealed with the inner wall of the third installation chamber 107, a first through hole 44 is provided in the second boss 43, the first installation chamber 102 is connected to the first through hole 44, the valve body 5 includes a valve stem 51, the valve stem 51 can be movable to block one end of the second through hole 45 or detach from the second through hole 45, the first through hole 44 and the second through hole 45 are connected or blocked by the valve stem 51.

[0031] The on-off valve 3 is a servo valve or a solenoid valve, preferably a solenoid valve. The valve body 5 is a prior art. Its specific structure and working principle are not described in detail in this specification. When the second water inlet waterway is opened, cold water can enter the first through hole 44 from the first installation cavity 102, and then enter the liquid chamber 104 from the second through hole 45, and finally enter the plate exchange inlet 106; when the second water inlet waterway is closed, the valve stem 51 blocks one end of the second through hole 45, and the first through hole 44 is blocked from the liquid chamber 104. The second water inlet waterway is opened and closed by setting a solenoid valve, which is easy to operate and has good stability.

[0032] A rib 46 is provided on the side of the first boss 42 , and the end of the rib 46 abuts against the side of the current limiting device 2 away from the first installation cavity 102 . The rib 46 can fix the current limiting device 2 to prevent it from falling off.

[0033] like Figure 5 As shown, the on-off valve 3 is installed at the end of the connecting platform 108 and covers the liquid cavity 104. Specifically, the on-off valve 3 is fixed to the shell 1 by a card screw 7. A socket 115 is provided on the side of the connecting platform 108. The socket 115 communicates with both sides of the connecting platform 108. An annular groove 47 is provided on the outside of the first boss 42. The card screw 7 passes through the socket 115. The part of the card screw 7 located in the liquid cavity 104 is embedded in the annular groove 47. The on-off valve 3 and the shell 1 are connected by the card screw 7, which is easy to install and has good reliability.

[0034] like Figures 1 to 3 As shown, the shell 1 includes a plate exchange outlet 109 and a water pump interface 110, the plate exchange outlet 109 is connected to the water pump interface 110, and the water pump interface 110 end is connected to the circulating water pump (not shown in the figure), the shell 1 includes a heating return water interface 111, an expansion water tank interface 112, a safety valve interface 113, a water passage 114 and a water supply valve interface 116, the plate exchange outlet 109, the water pump interface 110, the heating return water interface 111, the expansion water tank interface 112 and the safety valve interface 113 are all connected to the water passage 114, the heating return water interface 111 is connected to the heating return water pipe (not shown in the figure), the expansion water tank interface 112 is connected to the expansion water tank (not shown in the figure), the safety valve interface 113 is connected to the safety valve (not shown in the figure) (not shown in the figure), and the water supply valve interface 116 end is connected to the water supply valve 8, the heating return water pipe, the expansion water tank, the safety valve and the water supply valve 8 are all conventional components in the wall-mounted boiler system, which are prior art.

[0035] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A flow rate dual-adjustable water inlet valve, characterized in that: The invention comprises a housing (1), a flow limiting device (2) and an on-off valve (3); the housing (1) comprises a water inlet (101), a first installation cavity (102) and a plate exchange inlet (106); the water inlet (101), the first installation cavity (102), the flow limiting device (2) and the plate exchange inlet (106) form a first water inlet waterway; the water inlet (101), the first installation cavity (102), the on-off valve (3) and the plate exchange inlet (106) form a second water inlet waterway; the second water inlet waterway is opened and closed by the on-off valve (3).

2. A flow rate dual-adjustable water inlet valve according to claim 1, characterized in that: The housing (1) comprises a connecting platform (108) and a second installation cavity (103); a liquid flow cavity (104) is provided in the connecting platform (108); the liquid flow cavity (104) is connected to the plate exchange inlet (106) via a connecting port (105); two ends of the second installation cavity (103) are respectively connected to the first installation cavity (102) and the liquid flow cavity (104); and the flow limiting device (2) is inserted into the second installation cavity (103) and fixed.

3. A flow rate dual-adjustable water inlet valve according to claim 2, characterized in that: The housing (1) comprises a third installation cavity (107), the third installation cavity (107) is communicated with the first installation cavity (102), and the third installation cavity (107) is communicated with or blocked from the liquid passage cavity (104) via an opening and closing valve (3).

4. A flow rate dual-adjustable water inlet valve according to claim 3, characterized in that: The on-off valve (3) includes a valve seat (4) and a valve body (5), the valve seat (4) includes a base (41), one side of the base (41) abuts against the side of the connecting platform (108), the side of the base (41) is provided with a first boss (42), the first boss (42) is inserted into the liquid cavity (104) and is sealed with the inner wall of the liquid cavity (104), the first boss (42) is provided with a second through hole (45), the second through hole (45) is connected to the liquid cavity (104), and the second through hole (45) is connected to or blocked with the third installation cavity (107) through the valve body (5).

5. A flow rate dual-adjustable water inlet valve according to claim 4, characterized in that: A second boss (43) is provided on the side of the first boss (42), and the second boss (43) is inserted into the third installation cavity (107). The side wall of the second boss (43) is sealed with the inner wall of the third installation cavity (107). A first through hole (44) is provided in the second boss (43), and the first installation cavity (102) is connected to the first through hole (44). The valve body (5) includes a valve stem (51), and the valve stem (51) is movable to block one end of the second through hole (45) or to detach from the second through hole (45). The first through hole (44) and the second through hole (45) are connected or blocked through the valve stem (51).

6. A flow rate dual-adjustable water inlet valve according to claim 4, characterized in that: The on-off valve (3) is fixed to the housing (1) via a screw thread (7), and the valve seat (4) and the valve body (5) are fixed via screws. A socket (115) is provided on the side of the connecting platform (108), and the socket (115) communicates with both sides of the connecting platform (108). An annular groove (47) is provided on the outside of the first boss (42), and the screw thread (7) passes through the socket (115). The portion of the screw thread (7) located in the liquid chamber (104) is embedded in the annular groove (47).

7. A flow rate dual-adjustable water inlet valve according to claim 4, characterized in that: A convex rib (46) is provided on the side of the first boss (42), and the end of the convex rib (46) abuts against the side of the current limiting device (2) away from the first installation cavity (102).

8. The dual-flow regulating water inlet valve according to claim 1, characterized in that: The housing (1) comprises a plate exchange outlet (109) and a water pump interface (110), and the plate exchange outlet (109) is in communication with the water pump interface (110).

9. A flow rate dual-adjustable water inlet valve according to claim 8, characterized in that: The housing (1) comprises a heating water return interface (111), an expansion water tank interface (112), a safety valve interface (113), a water passage (114) and a water supply valve interface (116); the plate exchange outlet (109), the water pump interface (110), the heating water return interface (111), the expansion water tank interface (112) and the safety valve interface (113) are all in communication with the water passage (114); and the water supply valve interface (116) is connected to a water supply valve (8).

10. A flow rate dual-adjustable water inlet valve according to any one of claims 1 to 9, characterized in that: The on-off valve (3) is a solenoid valve, and a flow sensor (6) is installed in the first installation cavity (102).

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