CN116263212A

CN116263212A - Drainage valve group

Info

Publication number: CN116263212A
Application number: CN202111539005.8A
Authority: CN
Inventors: 俞舟; 马彦婷; 朱方英
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2023-06-16

Abstract

The invention provides a drainage valve group, comprising: the connecting seat is provided with a water inlet and outlet channel and an electromagnetic valve, and the electromagnetic valve is communicated with the water inlet and outlet channel; the air inlet valve is arranged on the connecting seat and is provided with an air inlet which can be opened and closed, and the air inlet is communicated with the water inlet and outlet channel under the condition that the air inlet is opened; the anti-freezing valve is arranged on the connecting seat and is provided with a drainage channel and a water outlet which can be opened and closed, and the water outlet is communicated with the drainage channel under the condition that the water outlet is opened; and the electromagnetic valve is arranged in the electromagnetic valve and is used for connecting or disconnecting the electromagnetic valve channel and the drainage channel. By adopting the scheme, the residual fluid in the water inlet and outlet channel is conveyed to the frost valve and then discharged out of the drainage valve group through the air inlet valve, so that the situation that the residual fluid in the water inlet and outlet channel is frozen in a low-temperature environment is avoided; by arranging the electromagnetic valve, the situation that the frost valve always drains water when fluid flows in the inlet and outlet channels is avoided, and the performance and reliability of the drainage valve group are improved.

Description

Drainage valve group

Technical Field

The invention relates to the technical field of drain valves, in particular to a drain valve group.

Background

At present, along with the wide application of the drainage valve group, the use requirement on the drainage valve group is higher and higher, the frost prevention valve in the drainage valve group in the prior art can possibly have the condition of incomplete drainage after the drainage valve group is used, and when the drainage valve group is in a low-temperature environment, the phenomenon of undischarged water or frost occurs; or the situation that the frost valve always drains water occurs in the process of using the drainage valve bank, so that fluid flowing through the drainage valve bank is shunted, and normal use of the drainage valve bank is affected.

Disclosure of Invention

The invention provides a drainage valve group, which is used for improving the performance and reliability of the drainage valve group in the prior art.

In order to solve the above problems, the present invention provides a drainage valve set comprising: the connecting seat is provided with a water inlet and outlet channel and an electromagnetic valve, and the electromagnetic valve is communicated with the water inlet and outlet channel; the air inlet valve is arranged on the connecting seat and is provided with an air inlet which can be opened and closed, and the air inlet is communicated with the water inlet and outlet channel under the condition that the air inlet is opened; the anti-freezing valve is arranged on the connecting seat and is provided with a drainage channel and a water outlet which can be opened and closed, and the water outlet is communicated with the drainage channel under the condition that the water outlet is opened; and the electromagnetic valve is arranged in the electromagnetic valve and is used for connecting or disconnecting the electromagnetic valve channel and the drainage channel.

Further, the air inlet valve is positioned above the water inlet and outlet channel, the frost valve is positioned below the water inlet and outlet channel, and the water outlet is positioned at the lower end of the water outlet channel.

Further, the air inlet valve and the frost valve are both arranged vertically.

Further, the electromagnetic valve is positioned below the water inlet and outlet channel, the electromagnetic valve is positioned above the anti-freezing valve, and the electromagnetic valve is horizontally arranged.

Further, the connecting seat comprises a connecting block, an air inlet valve connector, an anti-freezing valve connector and two water inlet and outlet connectors, wherein the air inlet valve connector is arranged above the connecting block, the anti-freezing valve connector is arranged below the connecting block, and the two water inlet and outlet connectors are respectively arranged on two opposite sides of the connecting block; wherein, the solenoid valve is located the connecting block, and the admission valve is installed on the admission valve connector, and the solenoid valve is installed on the connecting block, and the frost valve is installed on the frost valve connector.

Further, the air inlet valve comprises an air inlet valve seat and an air inlet valve core, the air inlet valve seat is connected with the connecting seat, the air inlet valve seat is provided with an air inlet, an air inlet cavity and an air outlet which are sequentially arranged from top to bottom, the air inlet valve core can be arranged in the air inlet cavity in a vertically floating manner, and the air outlet is communicated with the water inlet channel and the water outlet channel; the air inlet, the air inlet cavity and the air outlet are sequentially communicated under the condition that the air inlet is opened.

Further, the outer wall of the air inlet valve core is in clearance fit with the inner wall of the air inlet cavity, the gravity of the air inlet valve core is G, the downward fluid pressure received by the upper side of the air inlet valve core is F1, the upward fluid pressure received by the lower side of the air inlet valve core is F2, and under the condition that F2-F1 is more than G, the air inlet valve core closes the air inlet; in the case of F2-F1 < G, the intake valve core opens the intake port.

Further, the air inlet valve core comprises a sealing head, a connecting section and a guiding section which are sequentially connected, the radial size of the guiding section is larger than that of the sealing head and the connecting section, the outer wall of the guiding section is in clearance fit with the inner wall of the air inlet cavity, the sealing head is provided with a first annular groove, the air inlet valve further comprises a first sealing ring, the first sealing ring is arranged in the first annular groove, and the air inlet is sealed by the first sealing ring and the sealing head under the condition of closing.

Further, the frost valve comprises an antifreezing valve seat, an antifreezing valve core and a temperature bulb, the drainage channel is arranged in the antifreezing valve seat, the water outlet is arranged at one end of the antifreezing valve seat, one end of the temperature bulb is matched with the stop of the antifreezing valve core, and the temperature bulb and the antifreezing valve core are movably arranged in the drainage channel to block or open the water outlet.

Further, the solenoid valve comprises a valve needle structure and a first flow port and a second flow port which are communicated with each other, wherein the first flow port is communicated with the water inlet and outlet channel, the second flow port is communicated with the water outlet channel in an openable and closable manner, and the valve needle structure is movably arranged along the direction close to or far away from the second flow port so as to block or open the second flow port.

By applying the technical scheme of the invention, the invention provides a drainage valve group, which comprises the following components: the connecting seat is provided with a water inlet and outlet channel and an electromagnetic valve, and the electromagnetic valve is communicated with the water inlet and outlet channel; the air inlet valve is arranged on the connecting seat and is provided with an air inlet which can be opened and closed, and the air inlet is communicated with the water inlet and outlet channel under the condition that the air inlet is opened; the anti-freezing valve is arranged on the connecting seat and is provided with a drainage channel and a water outlet which can be opened and closed, and the water outlet is communicated with the drainage channel under the condition that the water outlet is opened; and the electromagnetic valve is arranged in the electromagnetic valve and is used for connecting or disconnecting the electromagnetic valve channel and the drainage channel. By adopting the scheme, under the condition that the air inlet is closed, the air inlet and the water inlet and outlet channels are disconnected, at the moment, fluid in the water inlet and outlet channels flows, and the fluid in the water inlet and outlet channels is not split by the air inlet valve; under the condition that the air inlet is opened, the air inlet is communicated with the water inlet and outlet channel, the water inlet and outlet channel enters air to balance the internal pressure and the external pressure, and residual fluid in the water inlet and outlet channel flows to the frost valve under the action of gravity. Meanwhile, under the condition that fluid flows in the water inlet and outlet channels, the water inlet and outlet channels are disconnected through the electromagnetic valve and the water outlet channels, and under the condition that no fluid flows in the water inlet and outlet channels, the water inlet and outlet channels are communicated through the electromagnetic valve and the water outlet channels. By arranging the air inlet valve, on the premise of not influencing the performance of the water inlet and outlet channel, residual fluid in the water inlet and outlet channel is conveyed to the frost valve and then discharged out of the drainage valve bank. Meanwhile, by arranging the electromagnetic valve, the situation that the frost valve in the drainage valve bank without the electromagnetic valve in the prior art always drains when fluid flows in the inlet and outlet channels is avoided, and the performance and reliability of the drainage valve bank are improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 shows a schematic structural view of a drain valve block provided by an embodiment of the present invention;

FIG. 2 illustrates a cross-sectional view of another view of the drain valve stack of FIG. 1;

FIG. 3 shows a schematic structural view of the connection base in FIG. 1;

FIG. 4 shows a cross-sectional view of the connection mount of FIG. 3;

FIG. 5 shows a schematic structural view of the intake valve seat of FIG. 1;

FIG. 6 shows a schematic structural view of the intake valve spool of FIG. 1;

FIG. 7 shows a schematic structural diagram of the intake valve of FIG. 1;

FIG. 8 shows a schematic structural view of the freeze valve of FIG. 1;

FIG. 9 shows a schematic structural view of the solenoid valve of FIG. 1;

fig. 10 shows a schematic structural view of the solenoid valve cartridge of fig. 9.

Wherein the above figures include the following reference numerals:

10. a connecting seat; 11. a water inlet and outlet passage; 12. a solenoid valve passage; 13. a connecting block; 14. an intake valve joint; 15. a frost valve joint; 16. a water inlet and outlet joint;

20. an intake valve; 21. an air inlet; 22. an intake valve seat; 23. an air inlet valve core; 231. a sealing head; 232. a connection section; 233. a guide section; 24. an air inlet cavity; 25. an air outlet; 26. a first seal ring; 27. a retainer ring; 281. a first air inlet hole; 282. a second air inlet hole; 283. a flow channel;

30. an anti-freeze valve; 31. a drainage channel; 32. a water outlet; 33. an anti-freezing valve seat; 34. an antifreezing valve core; 35. a temperature pack; 36. an elastic member;

40. an electromagnetic valve; 41. a valve needle structure; 42. a first flow port; 43. a second flow port; 44. an electromagnetic valve seat; 45. an electromagnetic valve core; 46. a movable iron core; 47. static iron core.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 10, an embodiment of the present invention provides a drainage valve set including: the connecting seat 10 is provided with a water inlet and outlet channel 11 and a solenoid valve channel 12, and the solenoid valve channel 12 is communicated with the water inlet and outlet channel 11; an intake valve 20 provided on the connection base 10, the intake valve 20 having an intake port 21 that can be opened and closed, the intake port 21 communicating with the water inlet and outlet passage 11 with the intake port 21 opened; a freeze valve 30 provided on the connection base 10, the freeze valve 30 having a drain passage 31 and a drain port 32 that can be opened and closed, the drain port 32 being communicated with the drain passage 31 when the drain port 32 is opened; a solenoid valve 40 installed in the solenoid valve passage 12, the solenoid valve 40 for connecting or disconnecting the solenoid valve passage 12 and the drain passage 31.

In the present embodiment, in the case where the air inlet 21 is closed, the air inlet 21 and the water inlet and outlet passage 11 are disconnected, and at this time, the fluid in the water inlet and outlet passage 11 flows, and the fluid in the water inlet and outlet passage 11 is not split by the air inlet valve 20; when the air inlet 21 is opened, the air inlet 21 is communicated with the water inlet and outlet passage 11, and at this time, the fluid in the water inlet and outlet passage 11 stops flowing, and the residual fluid in the water inlet and outlet passage 11 flows to the frost valve 30 under the action of the air inlet valve 20. Meanwhile, in the case where there is a fluid flow in the water inlet and outlet passage 11, the water inlet and outlet passage 11 is disconnected from the water discharge passage 31 by the solenoid valve 40, and in the case where there is no fluid flow in the water inlet and outlet passage 11, the water inlet and outlet passage 11 is communicated with the water discharge passage 31 by the solenoid valve 40. By arranging the air inlet valve 20, on the premise of not influencing the performance of the water inlet and outlet channel 11, residual fluid in the water inlet and outlet channel 11 is conveyed to the frost valve 30 to be discharged out of the drainage valve bank, and compared with the drainage valve bank without the air inlet valve 20 in the prior art, the situation that the residual fluid in the water inlet and outlet channel 11 is frozen in a low-temperature environment is avoided, and the performance and reliability of the drainage valve bank are improved. Meanwhile, by arranging the electromagnetic valve 40, the situation that the frost valve 30 in the drainage valve group without the electromagnetic valve 40 in the prior art always drains when fluid flows in the water inlet and outlet channel 11 is avoided, and the performance and reliability of the drainage valve group are improved.

Specifically, the water inlet and outlet channel 11 can be directly connected to the fluid main loop, drainage devices such as a drain pipe are not required to be led out separately, the pipeline space is saved, meanwhile, the drain valve group is connected to the fluid main loop, the water temperature of the main loop can be sensed better, the starting temperature of the anti-freezing valve is enabled to be more accurate, anti-freezing drainage is achieved more accurately at low temperature, and water leakage and accidental drainage are prevented through the electromagnetic valve 40 at high temperature.

As shown in fig. 1 and 2, the intake valve 20 is located above the water inlet and outlet passage 11, the frost valve 30 is located below the water inlet and outlet passage 11, and the drain port 32 is located at the lower end of the drain passage 31. By the arrangement, the air inlet valve 20 can be used for air inlet from a position higher than the frost valve 30 and the water inlet and outlet channel 11, so that the negative pressure inside and outside the water inlet and outlet channel 11 is more obvious, and the air inlet valve 20 is more convenient for conveying water in the water inlet and outlet channel 11 into the frost valve 30.

Further, the intake valve 20 and the freeze valve 30 are both vertically disposed. By this arrangement, the intake performance of the intake valve 20 is improved, and thus the conveying capacity of the residual fluid in the water inlet and outlet passage 11 is increased, and the drainage efficiency of the drainage valve group is improved. And the anti-freezing valve 30 is vertically arranged, so that fluid in the anti-freezing valve 30 can flow out by self weight, and the drainage performance of the anti-freezing valve 30 is improved.

Optionally, the air inlet valve 20 and the frost valve 30 are coaxially arranged, so that the drainage valve group is more compact in structure, the processing difficulty is reduced, and the drainage efficiency of the drainage valve group is further improved.

Specifically, the solenoid valve 40 is located below the water inlet and outlet passage 11, the solenoid valve 40 is located above the anti-freeze valve 30, and the solenoid valve 40 is horizontally disposed. By the arrangement, the electromagnetic valve 40 is positioned between the water inlet and outlet channel 11 and the anti-freezing valve 30, space is better utilized, the overall weight and the height of the drainage valve set are reduced, the control of the electromagnetic valve 40 on the connection or disconnection of the drainage channel 31 of the anti-freezing valve 30 and the water inlet and outlet channel 11 is ensured while the fluidity of fluid in the water inlet and outlet channel 11 is not influenced, and the reliability of the drainage valve set is improved.

As shown in fig. 3 and 4, the connection base 10 includes a connection block 13, an air inlet valve joint 14, an anti-freezing valve joint 15 and two water inlet and outlet joints 16, wherein the air inlet valve joint 14 is arranged above the connection block 13, the anti-freezing valve joint 15 is arranged below the connection block 13, and the two water inlet and outlet joints 16 are respectively arranged on two opposite sides of the connection block 13; wherein the solenoid valve passage 12 is located in the connection block 13, the air inlet valve 20 is mounted on the air inlet valve joint 14, the solenoid valve 40 is mounted on the connection block 13, and the anti-freeze valve 30 is mounted on the anti-freeze valve joint 15. Through setting up like this, through setting up connecting seat 10, organically integrated each function of drainage valves, realized the integration of function, when guaranteeing the reliability of drainage valves, make drainage valves inner structure compacter, need not to arrange admission valve 20, solenoid valve 40 etc. alone again, reduced corresponding assembly process etc. and reduced the processing cost of drainage valves.

As shown in fig. 5 to 7, the intake valve 20 includes an intake valve seat 22 and an intake valve core 23, the intake valve seat 22 is connected with the connection seat 10, the intake valve seat 22 has an intake port 21, an intake chamber 24 and an outlet port 25 which are sequentially arranged from top to bottom, the intake valve core 23 is arranged in the intake chamber 24 in a vertically floating manner, and the outlet port 25 is communicated with the water inlet and outlet passage 11; wherein, the air inlet 21, the air inlet cavity 24 and the air outlet 25 are communicated in sequence under the condition that the air inlet 21 is opened.

In this embodiment, the air intake valve 20 has a first air intake hole 281, and the first air intake hole 281 is communicated with air outside the drain valve group and is also communicated with the air intake cavity 24 through the air intake 21, and the air intake 21 can be opened or blocked by the up-and-down floating of the air intake valve core 23, so that the first air intake hole 281 and the air intake cavity 24 are communicated or disconnected.

Specifically, the outer wall of the intake valve core 23 and the inner wall of the intake cavity 24 are in clearance fit, the gravity of the intake valve core 23 is G, the downward fluid pressure received by the upper side of the intake valve core 23 is F1, the upward fluid pressure received by the lower side of the intake valve core 23 is F2, wherein the intake valve core 23 closes the intake port 21 under the condition that F2-F1 > G; in the case of F2-F1 < G, the intake valve core 23 opens the intake port 21. By the arrangement, the movement of the air inlet valve core 23 is realized through the internal and external pressure difference borne by the air inlet valve core 23, so that the closing and opening of the air inlet 21 are controlled, and the degree of automation of the drainage valve group is improved. Moreover, the air inlet valve 20 is vertically arranged, and the gravity G of the air inlet valve does not generate other component force, so that the air inlet valve 20 is easier to open, the situation that the air inlet valve 20 cannot be opened by itself or needs to be opened by other equipment in an auxiliary way after closing the air inlet valve is avoided, and the automation performance and reliability of the air inlet valve group are improved.

Further, the intake valve core 23 includes a sealing head 231, a connecting section 232 and a guiding section 233 which are sequentially connected, the radial dimension of the guiding section 233 is larger than that of the sealing head 231 and the connecting section 232, the outer wall of the guiding section 233 is in clearance fit with the inner wall of the intake cavity 24, the sealing head 231 is provided with a first annular groove, the intake valve 20 further includes a first sealing ring 26, the first sealing ring 26 is arranged in the first annular groove, and the intake port 21 is sealed by the first sealing ring 26 and the sealing head 231 under the condition that the intake port 21 is closed. By the clearance fit between the guide section 233 and the air inlet cavity 24, the reliability of the movement of the air inlet valve core 23 in the air inlet valve seat 22 is ensured, and the air inlet valve core 23 is prevented from being deviated in the movement process. By providing the first seal ring 26 to seal the air inlet 21, the reliability of the seal is ensured.

Optionally, the air inlet valve 20 further includes a retainer ring 27, an annular limiting groove is disposed on a side, close to the air outlet 25, of the air inlet cavity 24, the retainer ring 27 is disposed in the annular limiting groove, an inner diameter of the retainer ring 27 is small and is matched with an outer diameter of the valve core, and a lower end of the air inlet valve core 23 is in stop fit with the retainer ring 27 so as to limit a lowest position of the air inlet valve core 23, so that the condition that the air inlet valve core 23 is separated from the air inlet valve seat 22 is prevented, and reliability of the air inlet valve 20 is ensured.

Optionally, the guide section 233 has a flow passage 283 therein, the connecting section 232 of the air inlet valve core 23 has a second air inlet hole 282, the flow passage 283 is communicated with the air inlet cavity through the second air inlet hole 282, the first air inlet hole 281 is disposed on the air inlet valve seat 22, the first air inlet hole 281 is disposed above the air inlet 21 and is communicated with the air inlet 21, and the flow area of the first air inlet hole 281 is larger than the flow area of the second air inlet hole 282, i.e. the flow capacity of the fluid passing through the first air inlet hole 281 is larger than the flow capacity of the fluid passing through the second air inlet hole 282. Specifically, when the fluid in the water inlet and outlet channel 11 just starts to circulate, the fluid will impact the air inlet valve 20 in the open valve state, the fluid will flow through the air outlet 25 into the air inlet cavity 24 and impact the air inlet valve core 23, a small part of the fluid will sequentially pass through the second air inlet hole 282, the air inlet 21 and the first air inlet hole 281 to be discharged out of the water outlet valve group, as the circulation capacity of the first air inlet hole 281 is greater than that of the second air inlet hole 282, most of the fluid mainly impacts the air inlet valve core 23, so that the upward fluid pressure F2 received by the lower side of the air inlet valve core 23 is greater than the sum of the downward fluid pressure F1 received by the upper side of the air inlet valve core 23 and the gravity G of the air inlet valve core 23, thereby the air inlet valve core 23 moves towards the air inlet 21 under the action of the fluid, and finally the air inlet valve 20 is closed; when the fluid in the water inlet and outlet passage 11 stops flowing, the upward fluid pressure F2 received by the lower side of the air inlet valve core 23 is smaller than the sum of the downward fluid pressure F1 received by the upper side of the air inlet valve core 23 and the gravity G of the air inlet valve core 23, the air inlet valve core 23 moves away from the air inlet 21 under the action of the gravity G and the pressure difference between the upper side and the lower side, and then the air inlet 21 is opened, the first air inlet 281, the air inlet 21, the air inlet cavity 24, the first air inlet 281 and the circulation passage 283 are communicated, and then the opening of the air inlet valve 20 is realized.

As shown in fig. 8, the freeze valve 30 includes a freeze valve seat 33, a freeze valve core 34, and a bulb 35, the drain passage 31 is provided in the freeze valve seat 33, the drain port 32 is provided at one end of the freeze valve seat 33, one end of the bulb 35 is in stop fit with the freeze valve core 34, and both the bulb 35 and the freeze valve core 34 are movably provided in the drain passage 31 to block or open the drain port 32.

In this embodiment, the anti-freezing valve 30 includes an elastic member 36, the elastic member 36 is sleeved on the anti-freezing valve core 34, and two ends of the elastic member 36 respectively abut against the anti-freezing valve core 34 and one side of the anti-freezing valve seat 33 close to the water outlet 32. The temperature bulb 35 can move according to the change of the ambient temperature, under the condition that the ambient temperature is hot or normal, the temperature bulb 35 is heated and expanded, the temperature bulb 35 moves towards the water outlet 32 against the anti-freezing valve core 34 until the water outlet 32 is plugged, and at the moment, the elastic piece 36 is compressed; under the condition of low ambient temperature, the temperature bulb 35 is contracted by cooling, the temperature bulb 35 is contracted and moved towards one end far away from the water outlet 32, a gap is formed between the temperature bulb 35 and the antifreezing valve core 34, at the moment, the elastic piece 36 stretches to push the antifreezing valve core 34 towards the gap direction, and the antifreezing valve core 34 opens the water outlet 32.

As shown in fig. 9 and 10, the solenoid valve 40 includes a needle structure 41 and a first flow port 42, a second flow port 43, which communicate with each other, the first flow port 42 communicates with the water inlet and outlet passage 11, the second flow port 43 openably communicates with the water outlet passage 31, and the needle structure 41 is movably disposed in a direction approaching or separating from the second flow port 43 to block or open the second flow port 43.

In this embodiment, the communication or disconnection between the water inlet and outlet channel 11 and the frost valve 30 is achieved through the electromagnetic valve 40, specifically, in the case that the fluid flows in the water inlet and outlet channel 11, the valve needle structure 41 seals the second flow port 43 to prevent the fluid in the water inlet and outlet channel 11 from entering the drain channel 31 through the first flow port 42 and the second flow port 43; under the condition that no fluid flows in the water inlet and outlet channel 11, the valve needle structure 41 opens the second flow port 43, and the air inlet valve 20 combined with the opening valve enables the residual fluid in the water inlet and outlet channel 11 to enter the water outlet channel 31 through the first flow port 42 and the second flow port 43, so as to drain the water outlet valve set, and the situation that the performance of the water outlet valve set is affected due to icing of the residual fluid in the water inlet and outlet channel 11 in a low-temperature environment is avoided.

Optionally, the electromagnetic valve 40 includes an electromagnetic valve seat 44 and an electromagnetic valve core 45, the electromagnetic valve core 45 is disposed through the electromagnetic valve seat 44, the valve needle structure 41 is movably disposed in the electromagnetic valve core 45, the electromagnetic valve 40 further includes a movable iron core 46 and a static iron core 47, and the second flow opening 43 is plugged by the attraction between the movable iron core 46 and the static iron core 47.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drainage valve block, comprising:

the connecting seat (10), the connecting seat (10) is provided with a water inlet and outlet channel (11) and a solenoid valve channel (12), and the solenoid valve channel (12) is communicated with the water inlet and outlet channel (11);

an air inlet valve (20) arranged on the connecting seat (10), wherein the air inlet valve (20) is provided with an air inlet (21) which can be opened and closed, and the air inlet (21) is communicated with the water inlet and outlet channel (11) under the condition that the air inlet (21) is opened;

a freeze valve (30) provided on the connection base (10), the freeze valve (30) having a drain passage (31) and an openable drain port (32), the drain port (32) communicating with the drain passage (31) when the drain port (32) is open;

a solenoid valve (40) installed in the solenoid valve passage (12), the solenoid valve (40) being used to connect or disconnect the solenoid valve passage (12) and the drain passage (31).

2. The drain valve group according to claim 1, wherein the intake valve (20) is located above the water inlet and outlet passage (11), the frost valve (30) is located below the water inlet and outlet passage (11), and the drain port (32) is located at a lower end of the drain passage (31).

3. The drain valve group according to claim 1, characterized in that the intake valve (20) and the anti-freeze valve (30) are both arranged vertically.

4. The drain valve group according to claim 1, wherein the solenoid valve (40) is located below the water inlet and outlet passage (11), the solenoid valve (40) is located above the frost valve (30), and the solenoid valve (40) is horizontally disposed.

5. The drain valve assembly of claim 1, wherein,

the connecting seat (10) comprises a connecting block (13), an air inlet valve connector (14), an anti-freezing valve connector (15) and two water inlet and outlet connectors (16), wherein the air inlet valve connector (14) is arranged above the connecting block (13), the anti-freezing valve connector (15) is arranged below the connecting block (13), and the two water inlet and outlet connectors (16) are respectively arranged on two opposite sides of the connecting block (13);

the electromagnetic valve channel (12) is located in the connecting block (13), the air inlet valve (20) is installed on the air inlet valve connector (14), the electromagnetic valve (40) is installed on the connecting block (13), and the anti-freezing valve (30) is installed on the anti-freezing valve connector (15).

6. The drainage valve group according to claim 1, characterized in that the intake valve (20) comprises an intake valve seat (22) and an intake valve core (23), the intake valve seat (22) is connected with the connecting seat (10), the intake valve seat (22) is provided with the air inlet (21), an air inlet cavity (24) and an air outlet (25) which are sequentially arranged from top to bottom, the intake valve core (23) is arranged in the air inlet cavity (24) in a vertically floating manner, and the air outlet (25) is communicated with the water inlet and outlet channel (11); the air inlet (21) is sequentially communicated with the air inlet (21), the air inlet cavity (24) and the air outlet (25) under the condition of opening.

7. The drain valve group according to claim 6, wherein an outer wall of the intake valve core (23) and an inner wall of the intake chamber (24) are in clearance fit, a gravity of the intake valve core (23) is G, a downward fluid pressure applied to an upper side of the intake valve core (23) is F1, and an upward fluid pressure applied to a lower side of the intake valve core (23) is F2,

in the case of F2-F1 > G, the inlet valve core (23) closes the inlet opening (21);

in the case of F2-F1 < G, the inlet valve core (23) opens the inlet (21).

8. The drain valve group according to claim 6, wherein the intake valve core (23) comprises a sealing head (231), a connecting section (232) and a guiding section (233) which are sequentially connected, the radial dimension of the guiding section (233) is larger than that of the sealing head (231) and the connecting section (232), the outer wall of the guiding section (233) and the inner wall of the intake cavity (24) are in clearance fit, the sealing head (231) is provided with a first annular groove, the intake valve (20) further comprises a first sealing ring (26), the first sealing ring (26) is arranged in the first annular groove, and the first sealing ring (26) and the sealing head (231) seal the intake port (21) under the condition of closing.

9. The drain valve group according to claim 1, wherein the freeze valve (30) includes a freeze valve seat (33), a freeze valve core (34) and a bulb (35), the drain passage (31) is provided in the freeze valve seat (33), the drain port (32) is provided at one end of the freeze valve seat (33), one end of the bulb (35) is in stop fit with the freeze valve core (34), and both the bulb (35) and the freeze valve core (34) are movably provided in the drain passage (31) to block or open the drain port (32).

10. A valve block according to claim 1, characterized in that the solenoid valve (40) comprises a valve needle structure (41) and a first flow port (42) and a second flow port (43) which are communicated with each other, the first flow port (42) is communicated with the water inlet and outlet passage (11), the second flow port (43) is openably communicated with the water discharge passage (31), and the valve needle structure (41) is movably arranged in a direction approaching or separating from the second flow port (43) to block or open the second flow port (43).