A pneumatically controlled high-pressure water valve group

Abstract

The present invention discloses a pneumatically controlled high-pressure water valve group, which mainly relates to the technical field of valve equipment. A centralized water inlet channel and a compressed air inlet channel are designed. The electromagnetic reversing valve and the cartridge water valve are integrated together through a manifold block to achieve a high degree of integration of the water valve group. The connection mode of the passages of the electromagnetic reversing valve is opposite to that of existing products, changing the passage connection of the valve to meet the demand for plate installation. The left and right outer diameters of the valve core of the cartridge water valve are exactly the same, and the seal between the valve core and the valve assembly adopts circumferential sealing. No matter what position the valve core is in, the high-pressure water pressure is completely balanced, and the movement of the valve core only needs to overcome the friction force. Through this completely balanced design, the structure is made compact. The newly designed water valve group perfectly combines electricity, gas, and liquid water, has a large flow rate, a compact structure, a high degree of product integration, is convenient for installation and connection, eliminates the separate electromagnetic pneumatic reversing valve control cabinet, and the electromagnetic pneumatic reversing valve is directly integrated on the water valve group.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of valve equipment, and in particular to a pneumatically controlled high-pressure water valve group. Background Art

[0002] Water valve groups are widely used. The most common use is for sanitation vehicles to discharge water to clean the road. Water valve groups are used in the high-pressure sprinkler system of urban sanitation sprinkler trucks. Urban sanitation sprinkler trucks have high-pressure sprinkler systems and low-pressure sprinkler systems. The low-pressure sprinkler system is mainly used to flush relatively clean roads, and the water pressure is 2MPa; the high-pressure sprinkler system is mainly used to flush relatively dirty roads and spray into the air to achieve the purpose of dust reduction, and the water pressure is 10Mpa. When flushing the same area of ​​road surface, the amount of high-pressure water used is less than that of low-pressure water, and the use of high-pressure water is more water-saving and environmentally friendly.

[0003] The existing water valve group usually consists of a ball valve, a driving cylinder, a driving connecting rod, an electromagnetic control valve group, etc. The electromagnetic pneumatic reversing valve is used in combination with the water valve to control the water valve, which makes the structure bulky, inconvenient to install, too many pipes, and low integration. The ball valve is opened and closed by the driving cylinder through the driving connecting rod, which requires a large driving force. Since the starting position is close to the dead point of the mechanism, it is easy to cause problems such as malfunction of the switch. Summary of the invention

[0004] In view of the deficiencies and defects in the prior art, an object of the present invention is to provide a pneumatically controlled high-pressure water valve group.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a pneumatically controlled high-pressure water valve group, characterized in that: it includes a manifold block structure, a plurality of high-pressure balanced cartridge water valves are arranged on the side of the manifold block structure, and a plurality of electromagnetic pneumatic control valves corresponding to the high-pressure balanced cartridge water valves are arranged on the upper part of the manifold block structure;

[0006] The assembly block structure comprises a block body, a water inlet is provided in the axial direction on one side of the block body, a plurality of water valve channels connected to the water inlet are provided on the other side of the block body, the water valve channels are respectively connected to the air channel A and the air channel B, a compressed air inlet is provided in the axial direction on the upper part of the block body, and the compressed air inlet is connected to the air source channel;

[0007] The electromagnetic pneumatic control valve comprises a valve housing, which is sleeved on the reset end cover and forms a through hole with the top of the reset end cover. A movable valve stem is arranged in the valve housing, and a symmetrical sealing member is arranged on the valve stem. A reset end cover is arranged at one end of the valve housing, and an electromagnetic control device is arranged at the other end. An air relief port R, a working port A, an air source port P, and an air relief port S at the working port B are arranged in sequence from left to right in the valve housing. The air source port P is connected to the through hole. One end of the valve stem is fixed to the side of the valve housing by a reset spring, and the other end is connected to a reversing piston.

[0008] The high-pressure balanced cartridge water valve includes a valve body. An inlet assembly and an outlet assembly are respectively provided at both ends of the valve body. The interior of the valve body is divided into an air chamber and a working chamber through partition guiding. A valve core is provided inside the valve body. The valve core is cross-shaped. An air port A and an air port B are provided on the valve body. The air port A and the air port B are respectively located on both sides of the upper and lower end faces of the valve core. The upper and lower ends of the valve core are in close contact with the inner wall of the valve body. The left end and the upper and lower ends of the valve core are located in the air chamber. The left end of the valve core is connected to the inlet assembly through a spring. The right end of the valve core penetrates through the partition guiding and is connected to a valve component arranged in the working chamber.

[0009] As a further improvement of the present invention, the water inlet channel is connected to a high-pressure water pipe.

[0010] As a further improvement of the present invention, the water valve channel is connected to a cartridge water valve.

[0011] As a further improvement of the present invention, mounting holes are provided on the side surface of the block.

[0012] As a further improvement of the present invention, fixing holes are provided on the upper part of the block.

[0013] As a further improvement of the present invention, the electromagnetic control device includes a commutation iron core assembly connected to the valve housing, and the commutation iron core assembly is connected to an electromagnetic coil.

[0014] As a further improvement of the present invention, the left end of the valve core is in close sliding connection with the inlet assembly through a seal I.

[0015] As a further improvement of the present invention, the right end of the valve core is in close sliding connection with the partition guiding through a seal II.

[0016] As a further improvement of the present invention, the upper and lower ends of the valve core are in close sliding connection with the valve body through a seal III.

[0017] As a further improvement of the present invention, the left and right outer diameters of the valve core are completely the same, and the sealing between the valve core and the valve component adopts circumferential sealing.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: A centralized water inlet channel and a centralized compressed air inlet channel are designed in the present invention. The solenoid directional valve and the cartridge water valve are integrated together through a manifold block, realizing a high degree of integration of the water valve group. The structure is compact. The passage connection mode of the electro-pneumatic control valve is opposite to that of existing products, changing the passage connection of the valve to adapt to the plate installation requirements. The left and right outer diameters of the spool of the high-pressure balanced cartridge water valve are exactly the same. The sealing between the spool and the valve assembly adopts circumferential sealing. No matter where the spool is located, the high-pressure water pressure is completely balanced. Therefore, the movement of the spool only needs to overcome the friction force. Through this completely balanced design, the compact structure is realized. The newly designed water valve group perfectly combines electricity, gas, and liquid water, has a large flow rate, a compact structure, a high degree of product integration, is convenient for installation and connection, eliminates the separate electro-pneumatic directional valve control cabinet, and the electro-pneumatic directional valve is directly integrated on the water valve group. Description of the Drawings

[0019] The present invention will be further described below in conjunction with the drawings and specific embodiments:

[0020] Figure 1 It is a schematic structural diagram of a pneumatic control high-pressure water valve group of the present invention;

[0021] Figure 2 It is a side view of a pneumatic control high-pressure water valve group of the present invention;

[0022] Figure 3 It is a schematic structural diagram of the manifold block structure of the present invention;

[0023] Figure 4 It is a side sectional view of the manifold block structure of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the electro-pneumatic control valve of the present invention;

[0025] Figure 6 It is a schematic structural diagram of the high-pressure balanced cartridge water valve of the present invention;

[0026] In the figure: 1 manifold block structure, 101 block body, 102 water inlet channel, 103 compressed air inlet channel, 104 water valve channel, 105 air source channel, 106 air channel A, 107 air channel B, 108 mounting hole, 109 fixing hole,

[0027] 2 electro-pneumatic control valve, 201 return end cover, 202 return spring, 203 valve stem, 204 valve housing, 205 seal, 206 reversing piston, 207 reversing iron core assembly, 208 electromagnetic coil, 209 air source port P, 210 working port A, 211 working port B, 212 air release port R, 213 air release port S, 214 contact surface M, 215 contact surface N, 216 through hole,

[0028] 3 High-pressure balanced cartridge water valve, 301 water inlet assembly, 302 spring, 303 valve core, 304 valve body, 305 valve assembly, 306 water outlet assembly, 307 air port A, 308 air port B, 309 seal I, 310 seal II, 311 partition guide, 312 air cavity, 313 working cavity, 314 seal III. DETAILED DESCRIPTION

[0029] In order to make the technical solution and beneficial effects of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0030] Reference Figure 1 Figure 2 The present invention includes a modular block structure 1, a plurality of high-pressure balanced cartridge water valves 3 are arranged on the side of the modular block structure 1, and a plurality of electromagnetic pneumatic control valves 2 corresponding to the high-pressure balanced cartridge water valves 3 are arranged on the upper part of the modular block structure 1.

[0031] Reference Figure 3 Figure 4 The assembly block structure 1 includes a block 101, a water inlet 102 is provided in the axial direction on one side of the block 101, and a plurality of water valve channels 104 connected to the water inlet 102 are provided on the other side of the block 101, and the water valve channels 104 are respectively connected to the air channel A 106 and the air channel B 107, and a compressed air inlet 103 is provided in the axial direction on the upper part of the block 101, and the compressed air inlet 103 is connected to the air source channel 105. The water inlet 102 is connected to a high-pressure water pipe. The water valve channel 104 is connected to a cartridge water valve. A mounting hole 108 is provided on the side of the block 101. A fixing hole 109 is provided on the upper part of the block 1.

[0032] Reference Figure 5 The electromagnetic pneumatic control valve 2 includes a valve housing 204, which is sleeved on the reset end cover 201 and forms a through hole 216 with the top of the reset end cover 201. A movable valve stem 203 is provided in the valve housing 204, and a symmetrical seal 205 is provided on the valve stem 203. The reset end cover 201 is provided at one end of the valve housing 204, and an electromagnetic control device is provided at the other end. The valve housing 204 is provided with a venting port R212, a working port A210, a gas source port P209, a working port B211, and a venting port S213 from left to right. The gas source port P209 is connected to the through hole 216. One end of the valve stem 203 is fixed to the side of the valve housing 204 by a reset spring 202, and the other end is connected to a reversing piston 206. The electromagnetic control device includes a reversing core assembly 207 connected to the valve housing 204, and the reversing core assembly 207 is connected to an electromagnetic coil 208.

[0033] Reference Figure 6, the high-pressure balanced cartridge water valve 3 includes a valve body 304. An inlet assembly 301 and an outlet assembly 306 are respectively provided at both ends of the valve body 304. The interior of the valve body 304 is divided into an air chamber 312 and a working chamber 313 by a partition guide 311. A valve core 303 is provided inside the valve body 304. The valve core 303 is cross-shaped. An air port A 307 and an air port B 308 are provided on the valve body 304. The air port A 307 and the air port B 308 are respectively located on both sides of the upper and lower end faces of the valve core 03. The upper and lower ends of the valve core 303 are in close contact with the inner wall of the valve body 304. The left end and the upper and lower ends of the valve core 303 are located in the air chamber 312. The left end of the valve core 303 is connected to the inlet assembly 301 through a spring 302. The right end of the valve core 303 penetrates through the partition guide 311 and is connected to a valve assembly 305 arranged in the working chamber 313. The left end of the valve core 303 and the inlet assembly 301 are closely and slidably connected through a seal I 309. The right end of the valve core 303 and the partition guide 311 are closely and slidably connected through a seal II 310. The upper and lower ends of the valve core 303 and the valve body 304 are closely and slidably connected through a seal III 314. The left and right outer diameters of the valve core 303 are exactly the same, and the seal between the valve core 303 and the valve assembly 305 adopts circumferential sealing.

[0034] The present invention designs a centralized water inlet channel 102 and a centralized compressed air inlet channel 103, multiple water valve channels 104 communicating with the water inlet channel 102. Plug-in water valves are provided on the water valve channels 104. An air channel A 106, an air port A 307 of the high-pressure balanced cartridge water valve 3, and a working port A 210 of the electromagnetic pneumatic control valve 2 are connected. An air channel B 107 connects the air port B 308 of the high-pressure balanced cartridge water valve 3 and the working port B 211 of the electromagnetic pneumatic control valve 2. An air source channel 105 on the compressed air inlet channel 103 is connected to the air source port P209 of the electromagnetic pneumatic control valve 2.

[0035] The air source port P209 of the electromagnetic pneumatic control valve 2 is used to connect the air source channel 105 on the compressed air inlet channel 103 of the manifold block structure 1. The working port A 210 is connected to the air channel A 106, the working port B 211 is connected to the air channel B 107, the air release port R212 is used for releasing air from the working port A 210, and the air release port S213 is used for releasing air from the working port B 211.

[0036] At the contact surface M214 and the contact surface N215, the circuit can be cut off for sealing or connected in a loop, and its connection or cut-off for sealing is controlled by a control power supply. When the coil 208 is energized, the contact surface N215 is connected, and the contact surface M214 is cut off for sealing; when the coil is de-energized, the contact surface M214 is connected, and the contact surface N215 is cut off for sealing.

[0037] After the air source port P209 is connected to the air source, the air source exerts a rightward force on the valve stem 203 through the air holes on the valve housing 204. The left end of the valve stem 203 is always subjected to the spring force and air pressure of the rightward return spring 202.

[0038] When the coil is de-energized: The contact surface N215 is cut off and sealed. The right side of the reversing piston assembly 206 is communicated with the atmosphere through the contact surface M214. The piston assembly does not apply force to the valve stem. The valve stem 203 together with the valve stem seal 205 is under the action of the spring force and air pressure at the left end. At this time, the air source port P209 is communicated with the working port B211, the working port A210 is communicated with the air release port R212, and the air release port S213 is disconnected.

[0039] When the coil is energized: The contact surface M214 is cut off and sealed. The right side of the piston assembly is communicated with the air source through the contact surface N215. The piston assembly applies a leftward force to the valve stem 203. Since the leftward force applied by the piston assembly to the valve stem 203 is greater than the spring force and air pressure at the left end of the valve stem, the valve stem 203 together with the valve stem seal 205 moves to the left. The air port connection mode is switched to that the air source port P209 is communicated with the working port A210, the working port B211 is communicated with the air release port S213, and the air release port R212 is disconnected.

[0040] The connection mode of the 2-way electromagnetic pneumatic control valve is opposite to that of the existing products, changing the valve connection path to meet the requirements of plate installation.

[0041] In the initial state of the high-pressure balanced cartridge water valve 3, the valve core 303 is kept at the right position under the action of the spring 302, and at this time the water valve is in the closed state.

[0042] When the electromagnetic pneumatic control valve 2 is de-energized, compressed air enters through the air port A307 and compressed air is discharged through the air port B308. The valve core 303 moves to the right position under the action of the spring 302 and compressed air, closing the water valve.

[0043] When the electromagnetic pneumatic control valve is energized, the electromagnetic valve is commutated. Compressed air enters through the air port B308 and compressed air is discharged through the air port A307. The acting force of the compressed air is greater than the acting force of the spring 302. The valve core 303 moves to the leftmost position and the valve core 303 disengages from the valve assembly 305, opening the water valve.

[0044] In the present invention, the left and right outer diameters of the valve core 303 are exactly the same. The sealing between the valve core 303 and the valve assembly 305 adopts circumferential sealing. The left end of the valve core 303 is closely and slidably connected with the water inlet assembly 301 through the seal I309. The right end of the valve core 303 is closely and slidably connected with the partition guide 311 through the seal II310. The upper and lower ends of the valve core 303 are closely and slidably connected with the valve body 304 through the seal III314. No matter what position the valve core 303 is in, the high-pressure water pressure is completely balanced. Therefore, the movement of the valve core 303 only needs to overcome the friction force. Through this completely balanced design, the compact structure is realized.

[0045] The present invention designs a centralized water inlet channel 102 and a centralized compressed air inlet channel 103. By integrating the electromagnetic reversing valve and the cartridge water valve together through a manifold block, the high integration of the water valve group is realized, with a compact structure, beautiful appearance, sensitive action, and convenient installation and debugging.

[0046] It should be understood that the specific embodiments described herein are only for understanding the present invention and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Claims

1. A pneumatically controlled high-pressure water valve group, characterized in that: it includes an integrated block structure (1), on the side of the integrated block structure (1) there are a plurality of high-pressure balanced cartridge water valves (3), and on the upper part of the integrated block structure (1) there are a plurality of electromagnetic pneumatic control valves (2) corresponding to the high-pressure balanced cartridge water valves (3); the integrated block structure (1) includes a block body (101), on one axial side of the block body (101) there is a water inlet channel (102), on the other side of the block body (101) there are a plurality of water valve channels (104) communicating with the water inlet channel (102), the water valve channels (104) are respectively connected to air channel A (106) and air channel B (107), on the upper axial part of the block body (101) there is a compressed air inlet channel (103), and the compressed air inlet channel (103) is connected to the air source channel (105); the electromagnetic pneumatic control valve (2) includes a valve housing (204), the valve housing (204) is sleeved on the reset end cover (201) and forms a through hole (216) with the top of the reset end cover (201), inside the valve housing (204) there is a movable valve stem (203), on the valve stem (203) there are symmetrical seals (205), at one end of the valve housing (204) there is a reset end cover (201), and at the other end there is an electromagnetic control device. From left to right in the valve housing (204) there are a vent port R (212), a working port A (210), a gas source port P (209), a working port B (211), and a vent port S (213). The gas source port P (209) is connected through to the through hole (216). One end of the valve stem (203) is fixed to the side of the valve housing (204) through a return spring (202), and the other end is connected to a reversing piston (206); the high-pressure balanced cartridge water valve (3) includes a valve body (304), at both ends of the valve body (304) there are respectively a water inlet assembly (301) and a water outlet assembly (306), the inside of the valve body (304) is divided into an air chamber (312) and a working chamber (313) through a partition guide (311), inside the valve body (304) there is a valve core (303), the valve core (303) is cross-shaped, on the valve body (304) there are an air port A (307) and an air port B (308), the air port A (307) and the air port B (308) are respectively located on both sides of the upper and lower end faces of the valve core (303), the upper and lower ends of the valve core (303) are in close contact with the inner wall of the valve body (304), the left end and the upper and lower ends of the valve core (303) are located in the air chamber (312), the left end of the valve core (303) is connected to the water inlet assembly (301) through a spring (302), and the right end of the valve core (303) penetrates through the partition guide (311) and is connected to a valve component (305) arranged in the working chamber (313); the water inlet channel (102) is connected to a high-pressure water pipe; the water valve channel (104) is connected to a cartridge water valve; on the side of the block body (101) there is a mounting hole (108); on the upper part of the block body (101) there is a fixing hole (109).

2. The pneumatically controlled high-pressure water valve group according to claim 1, characterized in that: the electromagnetic control device includes a commutation iron core assembly (207) connected to the valve housing (204), and the commutation iron core assembly (207) is connected to the electromagnetic coil (208).

3. The pneumatically controlled high-pressure water valve group according to claim 1, characterized in that: the left end of the valve core (303) is closely and slidably connected to the water inlet assembly (301) through a seal I (309).

4. The pneumatically controlled high-pressure water valve group according to claim 1, characterized in that: the right end of the valve core (303) is closely and slidably connected to the partition guide (311) through a seal II (310).

5. The pneumatically controlled high-pressure water valve group according to claim 1, characterized in that: the upper and lower ends of the valve core (303) are closely and slidably connected to the valve body (304) through a seal III (314).

6. The pneumatically controlled high-pressure water valve group according to claim 1, characterized in that: the left and right outer diameters of the valve core (303) are exactly the same, and the valve core (303) and the valve assembly (305) are sealed by circumferential sealing.

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