WO2023109332A1

WO2023109332A1 - Drain valve set

Info

Publication number: WO2023109332A1
Application number: PCT/CN2022/128313
Authority: WO
Inventors: 俞舟; 冯忠波; 康志军; 马彦婷; 朱方英
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2021-12-15
Filing date: 2022-10-28
Publication date: 2023-06-22

Abstract

Provided is a drain valve set, comprising: a connecting seat (10), the connecting seat (10) being provided with a water inlet/outlet channel (11) and an electromagnetic valve channel (12), and the electromagnetic valve (40) being communicated with the water inlet/outlet channel (11); an air inlet valve (20) provided on the connecting base (10), the air inlet valve (20) being provided with an openable/closeable air inlet (21), and the air inlet (21) being communicated with the water inlet/outlet channel (11) when the air inlet (21) is opened; an anti-freezing valve (30) provided on the connecting base (10), the anti-freezing valve (30) being provided with a drainage channel (31) and an openable/closeable drainage port (32), and the drainage port (32) being communicated with the drainage channel (31) when the drainage port (32) is opened; and an electromagnetic valve (40) mounted in an electromagnetic valve seat (44), the electromagnetic valve (40) being used for enabling the electromagnetic valve channel (12) to be communicated with or not communicated with the drainage channel (31). By providing the air inlet valve (20), a residual fluid in the water inlet/outlet channel (11) is delivered to the anti-freezing valve (30) so as to be drained from the drain valve set, so that the situation that the residual fluid in the water inlet/outlet channel (11) is frozen in a low-temperature environment is avoided; by providing the electromagnetic valve (40), the situation that the anti-freezing valve (30) drains water all the time when a fluid flows in the inlet/outlet channel (11) is avoided, thereby improving the performance and reliability of the drain valve set.

Description

drain valve group

technical field

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

Background technique

At present, with the wide application of the drain valve group, the requirements for the use of the drain valve group are also getting higher and higher. The antifreeze valve in the drain valve group in the prior art may appear to be incompletely drained after the drain valve group is used. When the drain valve group is in a low temperature environment, the water that has not been drained may freeze; or the antifreeze valve keeps draining water during the use of the drain valve group, so that the fluid flowing through the drain valve group is diverted. Affect the normal use of the drain valve group.

Contents of the invention

The present application provides a drain valve group to improve the performance and reliability of the drain valve group in the prior art.

In order to solve the above problems, the application provides a drainage valve group, including: a connection seat, the connection seat has an inlet and outlet water passage and a solenoid valve, and the solenoid valve communicates with the inlet and outlet water passage; The valve has an air inlet that can be opened and closed. When the air inlet is opened, the air inlet communicates with the water in and out; When the drain port is opened, the drain port is connected to the drain channel; the solenoid valve is installed in the solenoid valve, and the solenoid valve is used to connect or disconnect the solenoid valve channel and the drain channel.

Further, the air intake valve is located above the water inlet and outlet channels, the antifreeze valve is located below the water inlet and outlet channels, and the drain port is located at the lower end of the water drainage channel.

Further, both the intake valve and the antifreeze valve are arranged vertically.

Further, the electromagnetic valve is located below the water inlet and outlet channels, the electromagnetic valve is located above the antifreeze valve, and the electromagnetic valve is arranged horizontally.

Further, the connection seat includes a connection block, an air intake valve joint, an antifreeze valve joint and two inlet and outlet water joints, wherein the air intake valve joint is arranged above the connection block, the antifreeze valve joint is arranged below the connection block, and the two inlet and outlet The water joints are respectively arranged on opposite sides of the connection block; wherein, the solenoid valve is located in the connection block, the intake valve is installed on the intake valve joint, the solenoid valve is installed on the connection block, and the antifreeze valve is installed on the antifreeze valve joint.

Further, the intake valve includes an intake valve seat and an intake valve core, the intake valve seat is connected to the connecting seat, the intake valve seat has an intake port, an intake cavity and an air outlet arranged in sequence from top to bottom, and the intake valve seat The air valve core can be floatingly arranged in the air intake chamber, and the air outlet is connected with the water inlet and outlet channels; wherein, when the air inlet is opened, the air inlet, the air inlet chamber and the air outlet are connected in sequence.

Further, the outer wall of the intake spool fits with the inner wall of the intake cavity, the gravity of the intake spool is G, the downward fluid pressure on the upper side of the intake spool is F1, and the lower side of the intake spool is subjected to The upward fluid pressure is F2, wherein, in the case of F2-F1>G, the intake valve core closes the intake port; in the case of F2-F1<G, the intake valve core opens the intake port.

Further, the intake valve core includes a sealing head, a connecting section and a guiding section connected in sequence, the radial dimension of the guiding section is larger than the radial dimension of the sealing head and the connecting section, and the outer wall of the guiding section is in clearance fit with the inner wall of the intake cavity, The sealing head has a first annular groove, the intake valve also includes a first sealing ring, the first sealing ring is arranged in the first annular groove, and when the air inlet is closed, the first sealing ring and the sealing head block the air intake mouth.

Further, the antifreeze valve includes an antifreeze valve seat, an antifreeze valve core and a temperature bulb, the drainage channel is arranged in the antifreeze valve seat, the drain port is arranged at one end of the antifreeze valve seat, one end of the temperature bulb is matched with the stopper of the antifreeze valve core, and the temperature bulb Both the antifreeze spool and the antifreeze valve core can be movably arranged in the drain channel to block or open the drain port.

Further, the solenoid valve includes a valve needle structure and a first communication port and a second communication port that communicate with each other. The first communication port communicates with the water inlet and outlet channels, and the second communication port communicates with the drainage channel in an openable and closable manner. The valve needle structure is along the The direction close to or away from the second flow port is movably set to block or open the second flow port.

Further, the connection seat also has an air intake valve passage, an inclined passage and an antifreeze valve passage, and the air inlet valve passage, the water inlet and outlet passages, the inclined passage, the electromagnetic valve passage and the antifreeze valve passage are connected in sequence, wherein the air inlet valve passage is used for installing Air intake valve, antifreeze valve channel is used to install antifreeze valve.

Further, the inlet valve passage is located above the water inlet and outlet passages, and the solenoid valve passage and the antifreeze valve passage are located below the water inlet and outlet passages.

Further, the water inlet and outlet passages are arranged horizontally, the inlet valve passages are arranged vertically, and the antifreeze valve passages are arranged vertically.

Further, the solenoid valve channel is located between the water inlet and outlet channel and the antifreeze valve channel, the solenoid valve channel is arranged horizontally, and the inclined channel is arranged obliquely relative to the horizontal direction.

Further, the inlet valve channel and the antifreeze valve channel are arranged coaxially, and the solenoid valve channel is perpendicular to the water inlet and outlet channels.

Further, the inner wall of the inlet valve channel has a fourth annular groove, which is used to place the sealing ring; or, the inner wall of the solenoid valve channel has a second annular groove, and the second annular groove is used to place the sealing ring; or, The inner wall of the passage of the antifreeze valve has a third annular groove, and the third annular groove is used for placing a sealing ring.

Further, the connecting seat also has an air inlet valve passage, which is used for installing the air inlet valve, the air inlet valve passage has internal threads, and the outer walls of the two water inlet and outlet joints have external threads.

Further, the connecting seat is an integral structure.

Applying the technical solution of the present application, a drain valve group is provided, including: a connection seat, the connection seat has an inlet and outlet water passage and a solenoid valve, and the solenoid valve communicates with the inlet and outlet water passage; The valve has an air inlet that can be opened and closed. When the air inlet is opened, the air inlet is connected to the water inlet and outlet channels; the antifreeze valve is arranged on the connecting seat, and the antifreeze valve has a drainage channel and an openable and closable drainage outlet. When opened, the drain port communicates with the drain channel; the solenoid valve is installed in the solenoid valve, and the solenoid valve is used to connect or disconnect the solenoid valve channel and the drain channel. With this scheme, when the air inlet is closed, the air inlet and the water inlet and outlet channels are disconnected, at this time, the fluid in the water inlet and outlet channels flows, and the fluid in the water inlet and outlet channels will not be diverted by the air inlet valve; When it is opened, the air inlet is connected with the water inlet and outlet channels, and the air enters the water inlet and outlet channels to balance the internal and external pressure, and the residual fluid in the water inlet and outlet channels flows to the antifreeze valve under the action of gravity. At the same time, when there is fluid flow in the water inlet and outlet channel, the water inlet and outlet channel is disconnected from the drain channel through the solenoid valve, and when there is no fluid flow in the water inlet and outlet channel, the water inlet and outlet channel is connected with the drain channel through the solenoid valve. In this way, by setting the inlet valve, the residual fluid in the inlet and outlet channels can be transported to the antifreeze valve and then discharged to the drain valve group without affecting the performance of the inlet and outlet channels, which is different from the drain valve without an inlet valve in the prior art. Compared with the valve group, it avoids the freezing of residual fluid in the water inlet and outlet channels under low temperature environment, and improves the performance and reliability of the drain valve group. At the same time, by setting the solenoid valve, the situation that the antifreeze valve in the drain valve group without solenoid valve in the prior art keeps draining water when there is fluid flow in the inlet and outlet channels is avoided, and the performance and reliability of the drain valve group are improved.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application, and do not constitute an improper limitation of the present application. In the attached picture:

FIG. 1 shows a schematic structural view of a drain valve group provided by an embodiment of the present application;

Fig. 2 shows a cross-sectional view of the drain valve group of Fig. 1 from another perspective;

Fig. 3 shows a schematic structural view of the connecting seat in Fig. 1;

Figure 4 shows a cross-sectional view of the connection seat of Figure 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 core of Fig. 1;

Fig. 7 shows a schematic structural view of the intake valve of Fig. 1;

Figure 8 shows a schematic structural view of the antifreeze valve of Figure 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 core in FIG. 9 .

Wherein, the above-mentioned accompanying drawings include the following reference signs:

10. Connection seat; 11. Inlet and outlet water channel; 12. Solenoid valve channel; 121. Second annular groove; 13. Connection block; 14. Air intake valve joint; 15. Antifreeze valve joint; 16. Inlet and outlet water joint; 17. Intake valve channel; 171, the fourth annular groove; 18, inclined channel; 19, antifreeze valve channel; 191, the third annular groove;

20, intake valve; 21, intake port; 22, intake valve seat; 23, intake valve core; 231, sealing head; 232, connection section; 233, guide section; 24, intake cavity; 25, outlet Air port; 26, the first sealing ring; 27, the retaining ring; 281, the first air inlet; 282, the second air inlet; 283, the circulation channel;

30. Antifreeze valve; 31. Drainage channel; 32. Drain outlet; 33. Antifreeze valve seat; 34. Antifreeze valve core; 35. Temperature package; 36. Elastic part;

40. Solenoid valve; 41. Needle structure; 42. First flow port; 43. Second flow port; 44. Solenoid valve seat; 45. Solenoid valve core; 46. Moving iron core; 47. Static iron core.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

As shown in Figures 1 to 10, the embodiment of the present application provides a drain valve group, including: a connection seat 10, the connection seat 10 has an inlet and outlet water passage 11 and a solenoid valve passage 12, and the solenoid valve passage 12 and the inlet and outlet water passage 11 is connected; the air intake valve 20 is arranged on the connecting seat 10, and the air intake valve 20 has an openable air inlet 21, and when the air inlet 21 is opened, the air inlet 21 communicates with the incoming and outgoing water channel 11; antifreeze The valve 30 is arranged on the connection seat 10. The antifreeze valve 30 has a drain channel 31 and an openable drain port 32. When the drain port 32 is opened, the drain port 32 communicates with the drain channel 31; the solenoid valve 40 is installed on the solenoid valve In the passage 12 , the solenoid valve 40 is used to connect or disconnect the solenoid valve passage 12 and the drain passage 31 .

In this embodiment, when the air inlet 21 is closed, the air inlet 21 and the water inlet and outlet channels 11 are disconnected, and at this time, the fluid in the water inlet and outlet channels 11 flows, and the fluid in the water inlet and outlet channels 11 will not be sucked in. The valve 20 divides the flow; when the air inlet 21 is opened, the air inlet 21 communicates with the water inlet and outlet passage 11, 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 acts on the inlet valve 20 Flow down to the antifreeze valve 30. At the same time, when there is fluid flow in the water inlet and outlet channel 11, the water inlet and outlet channel 11 is disconnected from the drain channel 31 through the solenoid valve 40, and when there is no fluid flow in the water inlet and outlet channel 11, the water inlet and outlet channel 11 passes through the solenoid valve 40. It communicates with the drainage channel 31. In this way, by setting the air intake valve 20, the residual fluid in the water inflow and outflow channel 11 is delivered to the antifreeze valve 30 and then discharged to the drain valve group without affecting the performance of the water inflow and outflow channel 11, which is different from the prior art without air intake. Compared with the drain valve group of the valve 20, it avoids the situation that the residual fluid in the water inlet and outlet channel 11 freezes under the low temperature environment, and improves the performance and reliability of the drain valve group. Simultaneously, by arranging the solenoid valve 40, the situation that the antifreeze valve 30 in the drain valve group without the solenoid valve 40 in the prior art has been drained when fluid flows in the water inlet and outlet channel 11 has been avoided, and the performance and performance of the drain valve group have been improved. reliability.

Specifically, the water inlet and outlet channels 11 can be directly connected to the main fluid circuit, eliminating the need to lead out drain pipes and other drainage equipment separately, saving pipeline space. The water temperature makes the starting temperature of the antifreeze valve more accurate, realizes antifreeze drainage more accurately at low temperatures, and prevents water leakage and accidental drainage at high temperatures through the solenoid valve 40.

As shown in FIG. 1 and FIG. 2 , the intake valve 20 is located above the water inlet and outlet channel 11 , the antifreeze valve 30 is located below the water inlet and outlet channel 11 , and the drain port 32 is located at the lower end of the drain channel 31 . Arranged in this way, the intake valve 20 can take in air from the higher position of the relative antifreeze valve 30 and the water inlet and outlet passage 11, so that the negative pressure inside and outside the water inlet and outlet passage 11 is more obvious, and it is more convenient for the air inlet valve 20 to pass the water into and out of the water passage 11. The water is delivered to the antifreeze valve 30 .

Further, both the intake valve 20 and the antifreeze valve 30 are arranged vertically. Such setting improves the air intake performance of the air intake valve 20, further increases the conveyance capacity of the residual fluid in the water channel 11, and improves the water discharge efficiency of the water discharge valve group. And the antifreeze valve 30 is vertically arranged, so that the fluid in the antifreeze valve 30 can flow out by its own weight, and the drainage performance of the antifreeze valve 30 is improved.

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

Specifically, the electromagnetic valve 40 is located below the water inlet and outlet channel 11 , the electromagnetic valve 40 is located above the antifreeze valve 30 , and the electromagnetic valve 40 is arranged horizontally. This arrangement makes the solenoid valve 40 between the water inlet and outlet passage 11 and the antifreeze valve 30, which makes better use of the space, reduces the overall weight and height of the drain valve group, and does not affect the fluidity of the fluid in the water inlet and outlet passage 11. At the same time, the solenoid valve 40 is guaranteed to control the connection or disconnection of the drain channel 31 of the antifreeze valve 30 and the water inlet and outlet channel 11, thereby improving the reliability of the drain valve group.

As shown in Figures 3 and 4, the connection seat 10 includes a connection block 13, an air inlet valve joint 14, an antifreeze valve joint 15 and two inlet and outlet water joints 16, wherein the air intake valve joint 14 is arranged above the connection block 13, The antifreeze valve joint 15 is arranged under the connection block 13, and the two water inlet and outlet joints 16 are respectively arranged on the opposite sides of the connection block 13; wherein, the solenoid valve channel 12 is located in the connection block 13, and the air intake valve 20 is installed on the air intake valve. On the joint 14 , the electromagnetic valve 40 is installed on the connection block 13 , and the antifreeze valve 30 is installed on the antifreeze valve joint 15 . In this way, by setting the connection seat 10, the various functions of the drain valve group are organically integrated, and the integration of functions is realized. While ensuring the reliability of the drain valve group, the internal structure of the drain valve group is made more compact, and there is no need to arrange it separately. The air valve 20, the electromagnetic valve 40, etc. reduce the corresponding assembly procedures and the like, and reduce the processing cost of the drain valve group.

As shown in Figures 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 to the connecting seat 10, and the intake valve seat 22 has a set of The air inlet 21, the air inlet chamber 24 and the air outlet 25, the air inlet valve core 23 can be arranged in the air inlet chamber 24 floating up and down, and the air outlet 25 communicates with the water inlet and outlet channel 11; wherein the air inlet 21 is opened Under normal circumstances, the air inlet 21 , the air inlet cavity 24 and the air outlet 25 communicate in sequence.

In this embodiment, the air intake valve 20 has a first air intake hole 281, the first air intake hole 281 not only communicates with the air outside the drain valve group, but also communicates with the air intake chamber 24 through the air inlet 21, and through the air intake The up and down movement of the spool 23 can open or block the air inlet 21 , thereby realizing the connection or disconnection between the first air inlet 281 and the air inlet chamber 24 .

Specifically, the outer wall of the intake valve core 23 and the inner wall of the intake chamber 24 are in clearance fit, the gravity of the intake valve core 23 is G, and the downward fluid pressure on the upper side of the intake valve core 23 is F1. The upward fluid pressure on the lower side of the core 23 is F2, wherein, in the case of F2-F1>G, the intake valve core 23 closes the intake port 21; in the case of F2-F1<G, the intake valve core 23 opens Air inlet 21. With this arrangement, the movement of the intake valve core 23 is realized by the internal and external pressure difference on the intake valve core 23, and then the closing and opening of the intake port 21 is controlled, which improves the automation of the drain valve group. Moreover, the intake valve 20 is vertically arranged, and its own gravity G has no other component force, which makes the intake valve 20 easier to open, avoiding the fact that the intake valve 20 cannot be opened by itself or needs to be opened by other equipment after it is closed. In this case, the automation performance and reliability of the intake valve group are improved.

Further, the intake valve core 23 includes a sealing head 231, a connecting section 232 and a guiding section 233 connected in sequence, the radial dimension of the guiding section 233 is larger than the radial dimension of the sealing head 231 and the connecting section 232, the outer wall of the guiding section 233 and the The inner wall of the air intake cavity 24 is clearance fit, the sealing head 231 has a first annular groove, the intake valve 20 also includes a first sealing ring 26, the first sealing ring 26 is arranged in the first annular groove, and the air inlet 21 is closed. Under normal circumstances, the first sealing ring 26 and the sealing head 231 block the air inlet 21 . Such arrangement ensures the reliability of the movement of the intake valve core 23 in the intake valve seat 22 through the clearance fit between the guide section 233 and the intake chamber 24, and prevents the intake valve core 23 from shifting during the movement process. . The air inlet 21 is sealed by setting the first sealing ring 26, which ensures the reliability of the sealing.

Optionally, the intake valve 20 also includes a retaining ring 27, the side of the air intake cavity 24 near the air outlet 25 is provided with an annular limiting groove, the retaining ring 27 is arranged in the annular limiting groove, and the inner diameter of the retaining ring 27 is small Cooperate with the outer diameter of the valve core, the lower end of the intake valve core 23 and the retaining ring 27 to limit the lowest position of the intake valve core 23 and prevent the intake valve core 23 from detaching from the intake valve seat 22. The reliability of the intake valve 20 is ensured.

Optionally, there is a flow channel 283 in the guide section 233, the connecting section 232 of the intake valve core 23 has a second air intake hole 282, the flow channel 283 communicates with the intake cavity through the second air intake hole 282, and the first air intake The hole 281 is arranged on the intake valve seat 22. The first intake hole 281 is located above the intake port 21 and communicates with the intake port 21. The flow area of the first intake hole 281 is larger than that of the second intake hole 282. The area, that is, the flow capacity of fluid passing through the first air inlet 281 is greater than the flow capacity of fluid passing through the second air inlet 282 . Specifically, when the fluid in the water inlet and outlet channel 11 just begins to circulate, the fluid will impact the intake valve 20 in the valve-open state, and the fluid will flow through the air outlet 25 into the intake chamber 24 and impact the intake valve core 23, a small part The fluid will be discharged from the drain valve group through the second air inlet 282, the air inlet 21 and the first air inlet 281 in turn, because the flow capacity of the first air inlet 281 is greater than the flow capacity of the second air inlet 282, so that the large Part of the fluid mainly impacts the intake valve core 23, so that the upward fluid pressure F2 received by the lower side of the intake valve core 23 is greater than the downward fluid pressure F1 received by the upper side of the intake valve core 23 and the intake valve core 23 itself. The sum of the gravity G, and then make the intake valve core 23 move towards the air intake port 21 under the action of the fluid, and finally close the intake valve 20; The upward fluid pressure F2 received is less than the sum of the downward fluid pressure F1 received on the upper side of the intake valve core 23 and the gravity G of the intake valve core 23 itself. Under the action, it moves in a direction away from the air inlet 21, and then opens the air inlet 21, and communicates with the first air inlet 281, the air inlet 21, the air inlet cavity 24, the first air inlet 281 and the circulation channel 283, and then realizes The opening of the intake valve 20 intake air.

As shown in Figure 8, the antifreeze valve 30 comprises an antifreeze valve seat 33, an antifreeze valve core 34 and a temperature bulb 35, the drainage channel 31 is arranged in the antifreeze valve seat 33, the drain port 32 is arranged at one end of the antifreeze valve seat 33, and the temperature bulb 35 One end and the antifreeze spool 34 stop fit, and the temperature bulb 35 and the antifreeze spool 34 can be movably arranged in the drain channel 31 to block or open the drain 32.

In this embodiment, the antifreeze valve 30 includes an elastic member 36, which is sleeved on the antifreeze valve core 34. Abut. The temperature bulb 35 can move according to the change of the ambient temperature. When the ambient temperature is hot or normal, the temperature bulb 35 will expand when heated, and the temperature bulb 35 will move against the antifreeze valve core 34 to the drain port 32 until the drain port is blocked. 32. At this time, the elastic member 36 is compressed; when the ambient temperature is low, the temperature bulb 35 shrinks due to cold, and the temperature bulb 35 shrinks and moves to the end away from the drain port 32, and a gap appears between the temperature bulb 35 and the antifreeze valve core 34 , at this time the elastic member 36 stretches, and pushes the antifreeze spool 34 toward the gap, so that the antifreeze spool 34 opens the drain port 32 .

As shown in Figures 9 and 10, the solenoid valve 40 includes a valve needle structure 41 and a first communication port 42 and a second communication port 43 that communicate with each other. The first communication port 42 communicates with the water inlet and outlet channels 11, and the second communication port 43 Openably and closably communicated with the drain channel 31 , the valve needle structure 41 is movably arranged in a direction approaching or away from the second flow port 43 to block or open the second flow port 43 .

In this embodiment, the connection or disconnection between the water inlet and outlet channel 11 and the antifreeze valve 30 is realized through the solenoid valve 40. Specifically, when there is fluid flow in the water inlet and outlet channel 11, the valve needle structure 41 blocks the second communication channel. The port 43 prevents the fluid in the water inlet and outlet channel 11 from entering the drainage channel 31 through the first flow port 42 and the second flow port 43; when there is no fluid flow in the water inlet and outlet channel 11, the valve needle structure 41 opens the second The flow port 43, combined with the open air intake valve 20, makes the residual fluid in the water inlet and outlet channel 11 enter the drain channel 31 through the first flow port 42 and the second flow port 43, and then discharge the drain valve group, avoiding the low temperature environment. The residual fluid in the water inlet and outlet channel 11 freezes and affects the performance of the drain valve group.

Optionally, the solenoid valve 40 includes a solenoid valve seat 44 and a solenoid valve core 45, the solenoid valve core 45 is arranged through the solenoid valve seat 44, the valve needle structure 41 is movably arranged in the solenoid valve core 45, and the solenoid valve 40 also includes The moving iron core 46 and the static iron core 47 can block the second circulation port 43 through the attraction between the moving iron core 46 and the static iron core 47 .

As shown in Figure 3 and Figure 4, the connecting seat also has an intake valve passage 17, an inclined passage 18 and an antifreeze valve passage 19, wherein the intake valve passage 17 is used to install the intake valve 20, and the solenoid valve passage 12 is used to install The solenoid valve 40 and the antifreeze valve channel 19 are used for installing the antifreeze valve 30 .

In this embodiment, by setting the inlet valve passage 17, the water inlet and outlet passage 11, the solenoid valve passage 12 and the antifreeze valve passage 19 on the connection seat, and installing the corresponding valves on the corresponding passages, it is organically connected to a connection seat. The function of each valve is integrated on the board, and the integration of functions is realized, which makes the structure of the connecting seat connected with multiple different valves more compact and smaller. Compared with the situation in the prior art that needs to arrange each valve and the main pipeline separately, The arrangement of this scheme reduces the welding and other processes of the external pipeline, and reduces the cost of processing and assembly; through the inclined channel 18, the water inlet and outlet channel 11 and the solenoid valve channel 12 are connected, which more organically saves the space of the connecting seat and makes the structure more compact. . And arrange like this, through the air inlet valve 20 of air inlet valve channel 17, while not affecting the normal flow of the fluid in the water inlet and outlet passage 11, the discharge of residual fluid in the water inlet and outlet passage 11 is realized, avoiding in the water inlet and outlet passage 11. In the case of residual fluid; through the solenoid valve 40 of the solenoid valve passage 12, the control of the connection or disconnection between the antifreeze valve passage 19 and the solenoid valve passage 12 is realized, and the antifreeze valve passage is avoided during the use of the drain valve group. The case where the antifreeze valve at position 19 is always draining.

Specifically, the inlet valve passage 17 is located above the water inlet and outlet passage 11 , and the solenoid valve passage 12 and the antifreeze valve passage 19 are located below the water inlet and outlet passage 11 . Such arrangement improves the intake performance of the intake valve arranged in the intake valve channel 17 and improves the drainage efficiency of the drain valve group.

As shown in Fig. 3 and Fig. 4, the water inlet and outlet passages 11 are arranged horizontally, the air inlet valve passage 17 is arranged vertically, and the antifreeze valve passage 19 is arranged vertically. This setting further improves the air intake performance of the intake valve 20 at the position of the intake valve passage 17, further increases the conveyance capacity of the residual fluid in the water passage 11, and improves the drainage efficiency of the drain valve group. The antifreeze valve channel 19 is vertically arranged, so that the fluid in the antifreeze valve 30 at the position of the antifreeze valve channel 19 can flow out by its own weight, which improves the drainage performance of the antifreeze valve 30 .

As shown in FIG. 4 , the solenoid valve passage 12 is located between the water inlet and outlet passage 11 and the antifreeze valve passage 19 , the solenoid valve passage 12 is arranged horizontally, and the inclined passage 18 is arranged obliquely relative to the horizontal direction. In this embodiment, the electromagnetic valve channel 12 is located between the water inlet and outlet channel 11 and the antifreeze valve channel 19, which makes better use of the space and makes the structure of the drain valve group without affecting the functions of each valve in the drain valve group. More compact, reducing the overall weight and height of the drain valve block. Moreover, the oblique passage 18 is arranged obliquely relative to the horizontal direction, which not only improves the fluidity of the fluid flowing from the water inlet and outlet passage 11 into the solenoid valve passage 12, but also saves the overall space of the connecting seat.

Specifically, the inlet valve passage 17 and the antifreeze valve passage 19 are arranged coaxially, and the solenoid valve passage 12 is perpendicular to the inlet and outlet water passage 11 . Such arrangement makes the structure of the drain valve group more compact, reduces the processing difficulty, and further improves the drainage efficiency of the drain valve group.

As shown in FIG. 4 , the inner wall of the intake valve channel 17 has a fourth annular groove 171 for placing a sealing ring. Arranged in this way, the seal of the intake valve 20 installed in the intake valve passage 17 is realized by the sealing ring arranged at the fourth annular groove 171, preventing the intake valve passage 17 from still having the same The external communication gap thus affects the performance of the intake valve.

Specifically, the inner wall of the solenoid valve channel 12 has a second annular groove 121, and the second annular groove 121 is used for placing a sealing ring. Arranged in this way, the sealing ring to the solenoid valve 40 installed in the solenoid valve passage 12 has been realized by the sealing ring arranged at the second annular groove 121, preventing the fluid entering and leaving the water passage 11 from flowing into the solenoid valve passage 12 from the solenoid valve passage 12 and the solenoid valve passage 12. The slit between the solenoid valves 40 flows out to ensure the performance of the drain valve group.

Further, the inner wall of the antifreeze valve channel 19 has a third annular groove 191, and the third annular groove 191 is used for placing a sealing ring. Arranged in this way, the sealing ring to the antifreeze valve 30 installed in the antifreeze valve passage 19 has been realized by being arranged on the sealing ring at the third annular groove 191 position, preventing the electromagnetic valve passage 12 from flowing into the fluid in the antifreeze valve passage 19 from the antifreeze valve passage 19 And the gap between the antifreeze valve 30 flows out to ensure the performance of the drain valve group.

As shown in Figure 3, the connection seat includes a connection block 13, an air intake valve joint 14, an antifreeze valve joint 15 and two inlet and outlet water joints 16, wherein the air intake valve joint 14 is arranged on the top of the connection block 13, and the antifreeze valve joint 15 It is arranged below the connection block 13, and two inlet and outlet water joints 16 are respectively arranged on opposite sides of the connection block 13; wherein, the inlet valve passage 17 is located in the inlet valve connector 14 and the connection block 13, and the inlet and outlet water passages 11 are located on both sides. In a water inlet and outlet joint 16 and the connection block 13, the inclined passage 18 and the solenoid valve passage 12 are located in the connection block 13, and the antifreeze valve passage 19 is located in the antifreeze valve joint 15 and the connection block 13. In this embodiment, the air intake valve joint 14 is arranged above the connection block 13, so that the air intake valve in the air intake valve joint 14 can quickly inhale the antifreeze valve 30 in the antifreeze valve joint 15, and realize the antifreeze valve joint. Rapid drainage of antifreeze valve 30 in 15.

Specifically, the inlet valve channel 17 has internal threads, the outer walls of the two water inlet and outlet joints 16 have external threads, and the connecting seat is an integral structure. Such arrangement facilitates the installation of the intake valve 20 , specifically, the outer wall of the intake valve 20 has external threads, and the intake valve 20 is threadedly connected with the intake valve channel 17 . The outer walls of the two water inlet and outlet joints 16 have external threads, which facilitate the connection of the water inlet and outlet joints 16 and the external main pipeline. Moreover, the connection seat is an integrated structure, which saves the installation action of redundant pipelines, and facilitates centralized maintenance.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

A drain valve group, characterized in that it comprises:

A connecting seat (10), the connecting seat (10) has an inlet and outlet water passage (11) and a solenoid valve passage (12), and the solenoid valve passage (12) communicates with the inlet and outlet water passage (11);

The intake valve (20) is arranged on the connecting seat (10), the intake valve (20) has an openable intake port (21), and when the intake port (21) is opened The air inlet (21) communicates with the water inlet and outlet channels (11);

An antifreeze valve (30), which is arranged on the connecting seat (10), the antifreeze valve (30) has a drain channel (31) and an openable and closable drain port (32), and the drain port (32) is opened Under the circumstances, the drain port (32) communicates with the drain channel (31);

A solenoid valve (40) is installed in the solenoid valve passage (12), and the solenoid valve (40) is used to connect or disconnect the solenoid valve passage (12) and the drainage passage (31).
The drain valve group according to claim 1, characterized in that, the air intake valve (20) is located above the water inlet and outlet passage (11), and the antifreeze valve (30) is located above the water inlet and outlet passage (11) ), the drain outlet (32) is located at the lower end of the drain channel (31).
The drain valve group according to claim 1, characterized in that, both the air intake valve (20) and the antifreeze valve (30) are arranged vertically.
The drain valve group according to claim 1, characterized in that, the solenoid valve (40) is located below the water inlet and outlet channel (11), and the solenoid valve (40) is located at the bottom of the antifreeze valve (30). above, and the solenoid valve (40) is set horizontally.
The drainage valve group according to claim 1, characterized in that,

The connection seat (10) includes a connection block (13), an air intake valve joint (14), an antifreeze valve joint (15) and two water inlet and outlet joints (16), wherein the air intake valve joint (14) is set Above the connection block (13), the antifreeze valve joint (15) is arranged below the connection block (13), and the two water inlet and outlet joints (16) are respectively arranged on the connection block (13). ) on opposite sides;

Wherein, the solenoid valve passage (12) is located in the connecting block (13), the intake valve (20) is installed on the intake valve joint (14), and the solenoid valve (40) is installed on the On the connection block (13), the antifreeze valve (30) is installed on the antifreeze valve joint (15).
The drain 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), and the intake valve seat (22) and The connection seat (10) is connected, and the intake valve seat (22) has the intake port (21), intake cavity (24) and air outlet (25) arranged in sequence from top to bottom, the The air intake valve core (23) is arranged in the air intake chamber (24) in a floating manner, and the air outlet (25) communicates with the water inlet and outlet channels (11); wherein, the air inlet (21 ) is opened, the air inlet (21), the air inlet chamber (24) and the air outlet (25) communicate in sequence.
The drain valve group according to claim 6, characterized in that, the outer wall of the intake valve core (23) is in clearance fit with the inner wall of the intake chamber (24), and the intake valve core (23) Gravity is G, the downward fluid pressure received by the upper side of the intake valve core (23) is F1, and the upward fluid pressure received by the lower side of the intake valve core (23) is F2, wherein,

In the case of F2-F1>G, the intake valve core (23) closes the intake port (21);

In the case of F2-F1<G, the intake valve core (23) opens the intake port (21).
The drain valve group according to claim 6, characterized in that, the intake valve core (23) comprises a sealing head (231), a connecting section (232) and a guiding section (233) connected in sequence, and the guiding section The radial dimension of (233) is greater than the radial dimension of the sealing head (231) and the connecting section (232), and the outer wall of the guide section (233) is in clearance fit with the inner wall of the air inlet cavity (24). , the sealing head (231) has a first annular groove, the intake valve (20) also includes a first sealing ring (26), and the first sealing ring (26) is arranged in the first annular groove , when the air inlet (21) is closed, the first sealing ring (26) and the sealing head (231) block the air inlet (21).
The drainage valve group according to claim 1, characterized in that, the antifreeze valve (30) comprises an antifreeze valve seat (33), an antifreeze valve core (34) and a temperature bulb (35), and the drainage passage (31) Set in the antifreeze valve seat (33), the drain port (32) is set at one end of the antifreeze valve seat (33), one end of the temperature bulb (35) and the antifreeze valve core (34) The stopper is matched, and both the temperature bulb (35) and the antifreeze valve core (34) can be movably arranged in the drain channel (31) to block or open the drain port (32).
The drainage valve group 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) communicating with each other, the The first communication port (42) communicates with the water inlet and outlet channel (11), the second communication port (43) communicates with the drainage channel (31) in an openable and closable manner, and the valve needle structure (41) It is movably arranged in a direction approaching or away from the second communication port (43), so as to block or open the second communication port (43).
The drain valve group according to claim 1, characterized in that, the connecting seat also has an inlet valve channel (17), an inclined channel (18) and an antifreeze valve channel (19), and the inlet valve channel (17 ), the inlet and outlet water channel (11), the inclined channel (18), the electromagnetic valve channel (12) and the antifreeze valve channel (19) are connected in sequence, wherein the inlet valve channel (17) It is used for installing the air intake valve (20), and the antifreeze valve passage (19) is used for installing the antifreeze valve (30).
The drain valve group according to claim 11, characterized in that, the inlet valve passage (17) is located above the inlet and outlet water passages (11), the solenoid valve passage (12) and the antifreeze valve passage (19) is located below the water inlet and outlet channel (11).
The drain valve group according to claim 12, characterized in that, the water inlet and outlet passages (11) are arranged horizontally, the inlet valve passages (17) are arranged vertically, and the antifreeze valve passages (19) are arranged vertically .
The drain valve group according to claim 11, characterized in that, the solenoid valve passage (12) is located between the inlet and outlet water passage (11) and the antifreeze valve passage (19), and the solenoid valve passage ( 12) Horizontally arranged, the inclined channel (18) is arranged obliquely relative to the horizontal direction.
The drain valve group according to claim 13, characterized in that, the inlet valve channel (17) and the antifreeze valve channel (19) are arranged coaxially, and the solenoid valve channel (12) is perpendicular to the inlet and outlet Water channel (11).
The drain valve group according to claim 11, characterized in that,

The inner wall of the inlet valve channel (17) has a fourth annular groove (171), and the fourth annular groove (171) is used to place a sealing ring; or,

The inner wall of the solenoid valve channel (12) has a second annular groove (121), and the second annular groove (121) is used to place a sealing ring; or,

The inner wall of the antifreeze valve channel (19) has a third annular groove (191), and the third annular groove (191) is used for placing a sealing ring.
The drain valve group according to claim 5, characterized in that, the connecting seat also has an air intake valve channel (17), and the air intake valve channel (17) is used for installing the air intake valve (20), The inlet valve channel (17) has internal threads, and the outer walls of the two water inlet and outlet joints (16) have external threads.
The drain valve group according to claim 11, wherein the connecting seat is an integral structure.