One-way single H valve

Abstract

The utility model belongs to the field of pneumatic valves for vehicles, and relates to a one-way single H valve. Comprising a valve body, and a first air outlet, a second air outlet, a first exhaust port and a second exhaust port are formed in the valve body; the valve body communicates with the one-way air inlet valve. A reversing valve element is movably embedded in the valve body, a first air channel and a second air channel are formed in the reversing valve element, and the reversing valve element can axially slide in the valve body. When the first air channel is simultaneously communicated with the first air outlet and the one-way air inlet valve, the second air outlet is sequentially communicated with the second air channel and the first exhaust port, and the second air channel is not communicated with the one-way air inlet valve; when the second air passage is simultaneously communicated with the second air outlet and the one-way air inlet valve, the first air outlet is sequentially communicated with the first air passage and the second exhaust port, and the first air passage is not communicated with the one-way air inlet valve; according to the utility model, the problem of clamping stagnation in the use process of the single H valve is reduced, the problem of air leakage is avoided, and the situation that an auxiliary box is in gear, pressure maintaining in a cylinder and bad working conditions are not out of gear can be ensured.

Description

Technical Field

[0001] The utility model belongs to the field of pneumatic valves for vehicles and relates to a one-way single H valve. Background Art

[0002] As an important tool for logistics transportation, the performance and stability of heavy-duty trucks are crucial to ensuring the safety and efficiency of cargo transportation. At present, mainstream heavy-duty trucks generally adopt a dual intermediate shaft transmission design with a main and auxiliary box structure. This design not only improves the transmission's load capacity and torque transmission efficiency, but also makes the vehicle's gear shifting process smoother and more fluid.

[0003] Among them, the auxiliary transmission is a key component, and its working principle depends on the precise control of the air valve. The opening and closing of the air valve directly determines the on-off of the air circuit, thereby realizing the rapid switching of high and low gears.

[0004] However, in actual application, it is found that the single H valve equipped on the existing 8-speed, 12-speed, Volvo 12-speed, S12 and S16 transmissions has some obvious problems. Although this single H valve product has a simple structure and relatively low cost, its design risk cannot be ignored. Due to structural defects, the product life of this single H valve is often short, and it is easy to get stuck and leak during use. This not only affects the normal operation of the transmission, but also brings great inconvenience to the driver. Utility Model Content

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a one-way single H valve. The utility model reduces the sticking problem of the single H valve during use and avoids the air leakage problem, and can ensure that the auxiliary box is in gear and the pressure in the cylinder is maintained, and the gear will not fall out under harsh working conditions.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model discloses a one-way one-H valve, comprising a valve body, on which a first air outlet, a second air outlet, a first exhaust port and a second exhaust port are provided;

[0008] The valve body is connected to a one-way air intake valve;

[0009] A reversing valve core is movably embedded in the valve body, a first air passage and a second air passage are provided on the reversing valve core, and the reversing valve core can slide axially in the valve body;

[0010] When the first air passage is connected to the first air outlet and the one-way air inlet valve at the same time, the second air outlet is connected to the second air passage and the first air outlet in sequence, and the second air passage is not connected to the one-way air inlet valve;

[0011] When the second air passage is connected to the second air outlet and the one-way air inlet valve at the same time, the first air outlet is connected to the first air passage and the second air outlet in sequence, and the first air passage is not connected to the one-way air inlet valve.

[0012] Furthermore, a first spring is arranged between one end of the reversing valve core and the valve body, and the first spring is always in a compressed state. A control port is opened on the valve body, and the other end of the reversing valve core is movably embedded in the control port. A limit portion is provided in the control port for limiting the axial movement of the reversing valve core.

[0013] Furthermore, the control port includes a piston accommodating chamber, a piston is embedded in the piston accommodating chamber, and the piston is connected to the reversing valve core.

[0014] Furthermore, a filtering device is arranged in the control port, and a lip sealing ring is arranged in the piston accommodating cavity.

[0015] Furthermore, a plurality of dynamic sealing rings and a plurality of static sealing rings are arranged between the valve body and the reversing valve core.

[0016] Furthermore, a positioning ring is arranged between the valve body and the reversing valve core.

[0017] Furthermore, a plurality of spacers are arranged between the valve body and the reversing valve core, and a dynamic sealing ring and a static sealing ring are arranged on the spacers, and the dynamic sealing ring and the static sealing ring are located between the spacers and the reversing valve core.

[0018] Furthermore, the valve body includes an upper cover and a lower cover, the control port is opened on the upper cover, and the first spring is in contact with the lower cover.

[0019] Furthermore, the one-way air inlet valve includes a valve cover, a second air inlet is opened on the valve cover, the second air inlet is connected to the interior of the valve body, a guide seat and a first limiting convex ring are arranged in the second air inlet, a one-way valve core is passed through the guide seat and the first limiting convex ring, a second limiting convex ring is provided on the one-way valve core, the second limiting convex ring is located between the guide seat and the first limiting convex ring, a second spring is sleeved on the one-way valve core, and the second spring is located between the guide seat and the second limiting convex ring.

[0020] Furthermore, a first air inlet is provided on the valve body, and the second air inlet is connected to the interior of the valve body through the first air inlet.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The utility model includes a valve body, and the valve body is provided with a first air outlet, a second air outlet, a first exhaust port, and a second exhaust port. The first air outlet is used to connect the low-end side of the cylinder, and the second air outlet is used to connect the high-end side of the cylinder. The first exhaust port is used to exhaust the low-end side of the cylinder, and the second exhaust port is used to exhaust the high-end side of the cylinder. The valve body is connected to a one-way air intake valve, and compressed air enters the valve body through the one-way air intake valve. At the same time, it is ensured that the compressed air in the valve body will not be discharged from the one-way air intake valve, and that when the gas tank of the whole vehicle leaks, the compressed air in the auxiliary box cylinder will not leak through the gas path of the valve body, and that the auxiliary box can be kept in gear, the cylinder is pressure-maintained, and the gear will not be dropped under harsh working conditions, solving the problem of leakage of existing single H valve products under harsh and extreme working conditions;

[0023] A reversing valve core is movably embedded in the valve body, and a first air channel and a second air channel are provided on the reversing valve core. The reversing valve core can slide axially in the valve body. The first air channel and the second air channel of the reversing valve core cooperate with the one-way inlet valve, the first air outlet, the second air outlet, the first exhaust port and the second exhaust port to realize the switching of two air paths of the one-way single H valve, thereby realizing the switching of high and low gears of the transmission. The switching of two air paths of the one-way single H valve is realized by sliding the reversing valve core. When the valve core moves up and down, it has little wear and has a long service life, thereby reducing the problem of sticking of the single H valve during use.

[0024] 2. The one-way single H valve of the utility model is designed with filtering devices at the air inlet, air outlet, exhaust port and control port to prevent dust and impurities from entering, and at the same time absorb a small amount of oil and water vapor, providing a better working environment for the air valve.

[0025] 3. The one-way one-H valve of the utility model uses a dynamic sealing ring and a static sealing ring inside, which improves the sealing performance of the valve body and the working condition of the sealing ring, thereby increasing the life of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the assembly structure of the valve body and the reversing valve core of the utility model;

[0028] Figure 3 This is a schematic diagram of the valve core assembly structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the one-way air intake valve structure of the utility model;

[0030] Figure 5 This is the gas circuit diagram of the utility model when the auxiliary box is switched to low gear;

[0031] Figure 6 This is the gas circuit diagram of the utility model when the auxiliary box is switched to high gear;

[0032] Figure 7 This is a one-way functional gas circuit diagram of the utility model.

[0033] Wherein: 1. upper cover; 2. filter device; 3. lip seal ring; 4. piston; 5. positioning ring; 6. valve body; 7. first air outlet; 8. spacer; 9. dynamic seal ring; 10. static seal ring; 11. second air outlet; 12. lower cover; 13. first spring; 14. first exhaust port; 15. control port; 16. guide seat; 17. one-way valve core; 18. second air inlet; 19. valve cover; 20. first seal ring; 21. second spring; 22. second seal ring; 23. second exhaust port; 24. reversing valve core; 25. first air duct; 26. second air duct; 27. one-way air inlet valve; 28. first air inlet; 29. ​​first limit convex ring; 30. second limit convex ring. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] The utility model is further described in detail below with reference to the accompanying drawings:

[0037] See also Figure 1The utility model discloses a one-way one-H valve, including a valve body 6. The valve body 6 is provided with a first air outlet 7, a second air outlet 11, a first exhaust port 14, and a second exhaust port 23. The first air outlet 7 is used to connect the low-speed side of the cylinder, the second air outlet 11 is used to connect the high-speed side of the cylinder, the first exhaust port 14 is used to exhaust the low-speed side of the cylinder, and the second exhaust port 23 is used to exhaust the high-speed side of the cylinder. The valve body 6 is connected to a one-way air intake valve 27, and compressed air enters the valve body 6 through the one-way air intake valve 27. At the same time, it is ensured that the compressed air in the valve body 6 will not be discharged from the one-way air intake valve 27, and it is ensured that when the gas tank of the whole vehicle leaks, the compressed air in the auxiliary box cylinder will not leak through the gas path of the valve body 6, so that the auxiliary box can be kept in gear, the pressure in the cylinder is maintained, and the gear will not be dropped in severe working conditions. See. Figure 7 . See Figure 2 A reversing valve core 24 is movably embedded in the valve body 6, and a first air passage 25 and a second air passage 26 are provided on the reversing valve core 24. Figure 3 The reversing valve core 24 can slide axially in the valve body 6. The first air passage 25 and the second air passage 26 of the reversing valve core 24 cooperate with the one-way air inlet valve 27, the first air outlet 7, the second air outlet 11, the first exhaust port 14 and the second exhaust port 23 to realize the switching of the two air paths of the one-way single H valve, thereby realizing the switching of the high and low gears of the transmission. The two air paths of the one-way single H valve are switched by sliding the reversing valve core 24. When the valve core moves up and down, it has less wear and a longer service life, which reduces the problem of sticking during the use of the single H valve. The air path switching process is as follows: See Figure 5 When the first air passage 25 is connected to the first air outlet 7 and the one-way air inlet valve 27 at the same time, the second air outlet 11 is connected to the second air passage 26 and the first exhaust port 14 in sequence, and the second air passage 26 is not connected to the one-way air inlet valve 27. At this time, the compressed air passes through the one-way air inlet valve 27, the first air passage 25 and the first air outlet 7 in sequence and enters the high-speed side of the transmission. The transmission cylinder piston moves to the low-speed side under the action of the compressed air, and the auxiliary box switches to a low gear. Figure 6 When the second air passage 26 is connected to the second air outlet 11 and the one-way intake valve 27 at the same time, the first air outlet 7 is connected to the first air passage 25 and the second exhaust port 23 in sequence, and the first air passage 25 is not connected to the one-way intake valve 27. At this time, the compressed air passes through the one-way intake valve 27, the second air passage 26 and the second air outlet 11 in sequence and enters the low-gear side of the transmission. The transmission cylinder piston moves toward the high-gear side under the action of the compressed air, and the auxiliary box switches to a high gear.

[0038] The utility model can realize the rapid switching of two gas circuits. The switching process relies on the axial movement of the reversing valve core 24, and the switching is smooth, which effectively reduces the sticking problem of the single H valve during use. At the same time, the setting of the one-way intake valve 27 only allows compressed air to enter the valve body 6. When the gas tank of the whole vehicle leaks, the compressed air in the auxiliary box cylinder will not leak through the gas circuit of the valve body 6, which can ensure that the pressure in the cylinder of the auxiliary box is maintained when the auxiliary box is in gear, and the gear will not be dropped under harsh working conditions.

[0039] See also Figure 1 In another feasible embodiment of the utility model, the following is adaptively modified according to the situation. It includes a valve body 6, and the valve body 6 is provided with a first air outlet 7, a second air outlet 11, a first exhaust port 14 and a second exhaust port 23;

[0040] The valve body 6 is connected to the one-way air intake valve 27;

[0041] A reversing valve core 24 is movably embedded in the valve body 6, and a first air passage 25 and a second air passage 26 are provided on the reversing valve core 24. The reversing valve core 24 can slide axially in the valve body 6;

[0042] The gas path switching process is as follows:

[0043] When the first air passage 25 is connected to the first air outlet 7 and the one-way air intake valve 27 at the same time, the second air outlet 11 is connected to the second air passage 26 and the first exhaust port 14 in sequence, the second air passage 26 is disconnected from the one-way air intake valve 27, and the transmission auxiliary box switches to a low gear.

[0044] When the second air passage 26 is connected to the second air outlet 11 and the one-way air intake valve 27 at the same time, the first air outlet 7 is connected to the first air passage 25 and the second exhaust port 23 in sequence, and the first air passage 25 is not connected to the one-way air intake valve 27. The transmission sub-box is switched to a high gear.

[0045] Embodiment 1:

[0046] See also Figure 1 This embodiment discloses a one-way one-H valve, including a valve body 6, on which a first air outlet 7, a second air outlet 11, a first exhaust port 14 and a second exhaust port 23 are formed;

[0047] The valve body 6 is connected to the one-way air intake valve 27;

[0048] A reversing valve core 24 is movably embedded in the valve body 6, and a first air passage 25 and a second air passage 26 are provided on the reversing valve core 24. The reversing valve core 24 can slide axially in the valve body 6;

[0049] When the first air passage 25 is connected to the first air outlet 7 and the one-way air inlet valve 27 at the same time, the second air outlet 11 is connected to the second air passage 26 and the first air outlet 14 in sequence, and the second air passage 26 is not connected to the one-way air inlet valve 27;

[0050] When the second air passage 26 is connected to the second air outlet 11 and the one-way air intake valve 27 at the same time, the first air outlet 7 is connected to the first air passage 25 and the second air outlet 23 in sequence, and the first air passage 25 is not connected to the one-way air intake valve 27 .

[0051] Preferably, a first spring 13 is arranged between one end of the reversing valve core 24 and the valve body 6, and the first spring 13 is always in a compressed state. A control port 15 is provided on the valve body 6, and the other end of the reversing valve core 24 is movably embedded in the control port 15. A limiter for limiting the axial movement of the reversing valve core 24 is provided in the control port 15. When the control port 15 is ventilated, the reversing valve core 24 is pushed by the high-pressure gas to move axially, the first spring 13 is compressed, the one-way air intake valve 27, the first air passage 25 and the first air outlet 7 are connected, and the compressed air enters the high-speed side of the transmission through the one-way air intake valve 27, the first air passage 25 and the first air outlet 7 in sequence, and the transmission cylinder piston moves to the low-speed side under the action of the compressed air, and the auxiliary box switches to a low speed. When the control port 15 is out of air, the compressed first spring 13 pushes the reversing valve core 24 to move axially, the one-way air intake valve 27, the second air passage 26 and the second air outlet 11 are connected, and the compressed air sequentially passes through the one-way air intake valve 27, the second air passage 26 and the second air outlet 11 to enter the low-speed side of the transmission, and the transmission cylinder piston moves toward the high-speed side under the action of the compressed air, and the auxiliary box switches to the high-speed. The utility model realizes the axial reciprocating motion of the reversing valve core 24 by introducing high-pressure air through the first spring 13 and the control port 15, thereby realizing the air path switching, and finally realizing the high and low gear switching of the transmission.

[0052] Preferably, the control port 15 includes a piston accommodating chamber, in which a piston 4 is embedded, and the piston 4 is connected to the reversing valve core 24. After the piston 4 is added, when the control port 15 is ventilated, the high-pressure gas pushes the piston to move, and the piston drives the reversing valve core 24 to move axially to achieve gas path switching.

[0053] Preferably, a filter device 2 is arranged in the control port 15 , and a lip seal ring 3 is arranged in the piston accommodating cavity. The filter device 2 is provided to prevent dust and impurities from entering the interior of the valve body 6 .

[0054] Preferably, a plurality of dynamic sealing rings 9 and a plurality of static sealing rings 10 are arranged between the valve body 6 and the reversing valve core 24. The arrangement of the dynamic sealing rings 9 and the plurality of static sealing rings 10 can prevent dust and impurities from entering the interior of the valve body 6, and can absorb a small amount of oil and water vapor, thereby providing a better working environment for the gas valve and avoiding the jamming of the single H valve after long-term operation.

[0055] Preferably, a positioning ring 5 is arranged between the valve body 6 and the reversing valve core 24 .

[0056] Preferably, a plurality of spacers 8 are arranged between the valve body 6 and the reversing valve core 24 , and dynamic sealing rings 9 and static sealing rings 10 are provided on the spacers 8 , and the dynamic sealing rings 9 and static sealing rings 10 are located between the spacers 8 and the reversing valve core 24 .

[0057] Preferably, the valve body 6 includes an upper cover 1 and a lower cover 12 , the control port 15 is opened on the upper cover 1 , and the first spring 13 is in contact with the lower cover 12 .

[0058] Embodiment 2:

[0059] See also Figure 1 This embodiment discloses a one-way one-H valve, including a valve body 6, on which a first air outlet 7, a second air outlet 11, a first exhaust port 14 and a second exhaust port 23 are formed;

[0060] The valve body 6 is connected to the one-way air intake valve 27;

[0061] A reversing valve core 24 is movably embedded in the valve body 6, and a first air passage 25 and a second air passage 26 are provided on the reversing valve core 24. The reversing valve core 24 can slide axially in the valve body 6;

[0062] When the first air passage 25 is connected to the first air outlet 7 and the one-way air inlet valve 27 at the same time, the second air outlet 11 is connected to the second air passage 26 and the first air outlet 14 in sequence, and the second air passage 26 is not connected to the one-way air inlet valve 27;

[0063] When the second air passage 26 is connected to the second air outlet 11 and the one-way air intake valve 27 at the same time, the first air outlet 7 is connected to the first air passage 25 and the second air outlet 23 in sequence, and the first air passage 25 is not connected to the one-way air intake valve 27 .

[0064] Preferably, see Figure 4 The one-way air inlet valve 27 includes a valve cover 19, a second air inlet 18 is formed on the valve cover 19, and the second air inlet 18 is connected to the interior of the valve body 6. A guide seat 16 and a first limiting convex ring 29 are arranged in the second air inlet 18. A one-way valve core 17 is inserted in the guide seat 16 and the first limiting convex ring 29. A second limiting convex ring 30 is provided on the one-way valve core 17, and the second limiting convex ring 30 is located between the guide seat 16 and the first limiting convex ring 29. A second spring 21 is sleeved on the one-way valve core 17, and the second spring 21 is located between the guide seat 16 and the second limiting convex ring 30. When compressed air is connected to the second air inlet 18, the one-way valve core 17 is squeezed by the compressed air, the one-way valve core 17 compresses the second spring 21, the first limiting convex ring 29 is separated from the second limiting convex ring 30, and the compressed air enters the valve body 6. On the contrary, when the high-pressure gas in the valve body 6 compresses the one-way valve core 17, the first limiting protrusion ring 29 and the second limiting protrusion ring 30 are in contact and sealed, thereby avoiding the leakage problem of the single H valve.

[0065] Preferably, a second sealing ring 22 is provided between the valve body 6 and the valve cover 19 , a first sealing ring 20 is provided on the first limiting convex ring 29 , and the first sealing ring 20 is located between the first limiting convex ring 29 and the second limiting convex ring 30 .

[0066] Preferably, a first air inlet 28 is provided on the valve body 6 , and the second air inlet 18 is connected to the interior of the valve body 6 through the first air inlet 28 .

[0067] The working principle of the utility model is as follows:

[0068] Controlled breathlessness: see Figure 6 , the auxiliary tank switches to the high-speed position, and the compressed air passes through the second air inlet 18, pushing the one-way valve core 17 to compress the second spring 21 to open the one-way valve, and the high-pressure gas passes through the first spacer 8 and the second air channel 26 of the reversing valve core 24 to the second air outlet 11. The second air outlet 11 is connected to the low-speed side of the cylinder. At this time, the low-speed side intakes air, and the cylinder piston moves to the high-speed side under the action of compressed air, and the auxiliary tank switches to the high-speed position.

[0069] Controlled Port Ventilation: See Figure 5 , the auxiliary box switches to the low gear position, and the compressed air passes through the second air inlet 18, pushing the one-way valve core 17 to compress the second spring 21 to open the one-way valve, and the first air passage 25 of the first spacer sleeve 8 and the reversing valve core 24 reaches the first air outlet 7. The first air outlet 7 is connected to the high-end side of the cylinder. At this time, the high-end side intakes air, and the cylinder piston moves to the low-gear side under the action of compressed air, and the auxiliary box switches to a low gear.

[0070] One-way function: see Figure 7 , the compressed air in the cylinder cannot pass through the one-way valve to the second air inlet 18. At this time, the cylinder is pressurized and the auxiliary box does not drop out of gear. This is mainly to prevent the compressed air in the auxiliary box cylinder from leaking through the vehicle gas circuit when the vehicle gas tank leaks, causing the vehicle to drop out of gear and damage the transmission under harsh working conditions.

[0071] The beneficial effects of the utility model are as follows:

[0072] This embodiment discloses a one-way single H valve, which solves the problems of leakage and sticking of existing single H valve products under harsh and extreme working conditions.

[0073] The one-way one-H valve of the utility model has good universality and is suitable for 8-speed, 12-speed, Volvo 12-speed, S12 and S16 transmissions.

[0074] The utility model is different from the two-position five-way single H valve of the traditional single H valve. The one-way single H valve of the utility model is one-way air intake, which ensures that when the vehicle is running in gear, the pressure in the cylinder is maintained and the auxiliary box does not fall out of gear.

[0075] The one-way one-H valve of the utility model uses a dynamic sealing ring 9 and a static sealing ring 10 inside, respectively, which improves the sealing performance of the valve body and the service condition of the sealing ring, thereby increasing the service life of the valve body.

[0076] The one-way one-H valve of the utility model adopts a non-through-hole structure design inside, that is, when the valve core moves up and down, the wear is small and the service life is long; when the valve core of the existing product moves up and down, the sealing ring passes through the small hole of the valve core, which has a great impact on the valve core and the sealing ring, so the service life is short;

[0077] The reversing valve core 24 of the utility model adopts a concave-convex shaft design with large rounded corners at both ends, which improves the efficiency of air intake and exhaust, and reduces the impact of both ends on the O-ring and reduces wear;

[0078] The utility model has a one-way single H valve, the air inlet, the air outlet, the exhaust port and the control port are all designed with filtering devices, which can prevent dust and impurities from entering, and can absorb a small amount of oil and water vapor, providing a better working environment for the air valve.

[0079] Compared with the original gas valve, the one-way one-H valve of the utility model has a service life increased by 30%, a failure rate reduced by 50%, and a synchronizer after-sales failure rate reduced;

[0080] The one-way one-H valve of the utility model ensures that the cylinder maintains pressure without falling out of gear under bad working conditions or when the whole vehicle leaks air.

[0081] The one-way single H valve of the utility model has a reasonable structural design, which can effectively improve the product life and solve the problems of valve body sticking and air leakage during use. At the same time, it is applied to the overall gas circuit to ensure that the auxiliary box is in gear, the pressure in the cylinder is maintained, and the gear will not fall out under harsh working conditions.

[0082] The newly designed one-way single H valve can completely replace the existing transmission upper valve, realizing seamless connection between new and old products. At the same time, the newly designed one-way single H valve has better sealing performance from the structural design, and its service life is increased to more than 2 times that of the original product, which solves the problems of leakage and stagnation of products in harsh and extreme working conditions and improves the overall quality of the product.

[0083] The above content is only for explaining the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims

1. A one-way H-type valve, characterized in that: The valve body (6) is provided with a first air outlet (7), a second air outlet (11), a first exhaust port (14) and a second exhaust port (23); The valve body (6) is connected to a one-way air intake valve (27); A reversing valve core (24) is movably embedded in the valve body (6), a first air passage (25) and a second air passage (26) are provided on the reversing valve core (24), and the reversing valve core (24) can slide axially in the valve body (6); When the first air channel (25) is connected to the first air outlet (7) and the one-way air inlet valve (27) at the same time, the second air outlet (11) is connected to the second air channel (26) and the first air outlet (14) in sequence, and the second air channel (26) is not connected to the one-way air inlet valve (27); When the second air channel (26) is simultaneously connected to the second air outlet (11) and the one-way air inlet valve (27), the first air outlet (7) is sequentially connected to the first air channel (25) and the second air outlet (23), and the first air channel (25) is not connected to the one-way air inlet valve (27).

2. A one-way one-H valve according to claim 1, characterized in that: A first spring (13) is arranged between one end of the reversing valve core (24) and the valve body (6), and the first spring (13) is always in a compressed state. A control port (15) is provided on the valve body (6), and the other end of the reversing valve core (24) is movably embedded in the control port (15). A limit portion for limiting the axial movement of the reversing valve core (24) is provided in the control port (15).

3. A one-way one-H valve according to claim 2, characterized in that: The control port (15) comprises a piston accommodating chamber, in which a piston (4) is embedded, and the piston (4) is connected to a reversing valve core (24).

4. A one-way one-H valve according to claim 3, characterized in that: A filter device (2) is arranged in the control port (15), and a lip seal ring (3) is arranged in the piston accommodating cavity.

5. A one-way one-H valve according to claim 4, characterized in that: A plurality of dynamic sealing rings (9) and a plurality of static sealing rings (10) are arranged between the valve body (6) and the reversing valve core (24).

6. A one-way one-H valve according to claim 5, characterized in that: A positioning ring (5) is arranged between the valve body (6) and the reversing valve core (24).

7. A one-way one-H valve according to claim 6, characterized in that: A plurality of spacers (8) are arranged between the valve body (6) and the reversing valve core (24), and a dynamic sealing ring (9) and a static sealing ring (10) are arranged on the spacers (8). The dynamic sealing ring (9) and the static sealing ring (10) are located between the spacers (8) and the reversing valve core (24).

8. A one-way one-H valve according to claim 7, characterized in that: The valve body (6) comprises an upper cover (1) and a lower cover (12), the control port (15) is opened on the upper cover (1), and the first spring (13) is in contact with the lower cover (12).

9. A one-way one-H valve according to claim 1, characterized in that: The one-way air intake valve (27) comprises a valve cover (19), a second air intake port (18) is formed on the valve cover (19), the second air intake port (18) is connected to the interior of the valve body (6), a guide seat (16) and a first limiting convex ring (29) are arranged in the second air intake port (18), a one-way valve core (17) is inserted in the guide seat (16) and the first limiting convex ring (29), a second limiting convex ring (30) is provided on the one-way valve core (17), the second limiting convex ring (30) is located between the guide seat (16) and the first limiting convex ring (29), and a second spring (21) is sleeved on the one-way valve core (17), the second spring (21) is located between the guide seat (16) and the second limiting convex ring (30).

10. A one-way one-H valve according to claim 9, characterized in that: The valve body (6) is provided with a first air inlet (28), and the second air inlet (18) is connected to the interior of the valve body (6) through the first air inlet (28).

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