CN215487752U - Novel water curtain valve - Google Patents

Abstract

The utility model provides a novel water curtain valve. The novel water curtain valve comprises a valve body assembly, a valve seat assembly, a valve core assembly, a cylinder assembly and a supporting assembly. The valve body assembly is provided with a water inlet end and a water outlet end. The valve core assembly is abutted against the valve seat assembly, the air cylinder assembly is used for driving the valve core assembly to move along the length direction of the valve body, the supporting assembly is connected to one side, away from the water inlet end, of the valve body assembly in a sealing mode, the air cylinder assembly is connected with the supporting assembly and is enclosed to form a buffer cavity, and the valve core assembly is connected with the supporting assembly and the air cylinder assembly in a sealing mode respectively. This novel water curtain valve's supporting component encloses with the cylinder subassembly and establishes and form the cushion chamber for during the cylinder subassembly drove case subassembly reciprocating motion, even sealed when producing the weeping because wearing and tearing between case subassembly and the supporting component, the medium can get into the cushion chamber, has avoided the medium directly to get into inside the cylinder subassembly and has leaded to the water curtain valve can not normally work.

Description

Novel water curtain valve

Technical Field

The utility model relates to the technical field of hot rolling machinery, in particular to a novel water curtain valve.

Background

The novel water curtain valve is mainly used for controlling the quick on-off function of pipeline fluid media in a medium-low pressure water system.

The prior art water curtain valve has the following defects in structure: only one gland part is fixedly connected between the valve body and the cylinder, once the middle seal is abraded and leaks, fluid media can directly enter the cylinder, and the use safety and the service life of the valve are seriously influenced; the upper end only has a cylinder cap to seal up epicoele air supply in the cylinder through its centre bore inner wall and valve rod sealing connection in the cylinder subassembly, nevertheless because with the sealed slot size undersize of valve rod junction, must carry out the hand nest or bend the sealing member during installation just can pack into, lead to the sealing member to produce invisible tiny deformation, make cylinder upper end air supply leak to at valve operation in-process valve rod because of the not enough phenomenon of crawling that produces of air supply power, influence valve normal use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel water curtain valve which comprises a valve body assembly, a valve seat assembly, a valve core assembly, a cylinder assembly and a supporting assembly. Wherein the supporting component presss from both sides and locates between valve body subassembly and the cylinder subassembly, and the supporting component encloses with the cylinder subassembly and establishes and form the cushion chamber for during the cylinder subassembly drove case subassembly reciprocating motion, even sealed when producing the weeping because wearing and tearing between case subassembly and the supporting component, the medium can get into the cushion chamber, has avoided the medium directly to get into inside the cylinder subassembly and has leaded to the water curtain valve can not normally work.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

according to one aspect of the present invention, a novel water curtain valve is provided. The novel water curtain valve comprises a valve body assembly, a valve seat assembly, a valve core assembly, a cylinder assembly and a supporting assembly. One side of the valve body assembly is provided with a water inlet end, and the side wall of the valve body assembly, which is close to the water inlet end, is provided with a water outlet end. The valve seat assembly is received within and sealingly coupled to the valve body assembly. One side of the valve core assembly, which is close to the water inlet end, is abutted against the valve seat assembly, and the other end of the valve core assembly is connected with the trigger nut. The air cylinder assembly is used for driving the valve core assembly to move along the axial direction of the valve core assembly, and a first through hole for the valve core assembly to pass through is formed in the center of the air cylinder assembly. And a second through hole for the valve core assembly to pass through is formed in the center of the supporting assembly. The valve core assembly is arranged in the second through hole and the first through hole in a penetrating mode and is in sealing connection with the supporting assembly and the cylinder assembly.

According to an embodiment of the utility model, the novel water curtain valve further comprises a water drainage component, the side wall of the support component is provided with at least one water drainage hole at intervals along the circumferential direction of the side wall, and one side of the water drainage component is connected with the support component so that the inner cavity of the support component is communicated with the outside through the water drainage component.

According to an embodiment of the utility model, the support assembly comprises a support sleeve and a guide sleeve, two ends of the support sleeve are respectively connected with the valve body assembly and the cylinder assembly, the support sleeve and the cylinder assembly are surrounded to form the buffer cavity, the second through hole is formed in the center of the support sleeve, and the guide sleeve is nested at the second through hole and is in sealing connection with the valve core assembly.

According to an embodiment of the present invention, the valve seat assembly includes a valve seat body and a valve sleeve, the valve seat body is accommodated in the valve body assembly and is hermetically connected to one side of the valve body assembly close to the water inlet end, two ends of the valve sleeve along a central axis of the valve sleeve are respectively connected to the valve seat body and the valve body assembly, a side wall of the valve sleeve abuts against a side wall of the valve body assembly, and the valve sleeve is provided with first water through holes at positions corresponding to the water outlet end at intervals.

According to an embodiment of the utility model, the valve core assembly comprises a valve core body and a valve rod, the valve core body is abutted with the valve seat assembly, one side of the valve rod, which is close to the water inlet end, is connected with the valve core body, the valve rod is arranged in the second through hole and the first through hole in a penetrating manner, the other side of the valve rod is connected with the trigger nut, and the valve core body is abutted with the valve seat assembly.

According to an embodiment of the present invention, a side wall of the valve plug body away from the central axis of the valve plug body includes a first guide surface and a second guide surface, the first guide surface transitions to the second guide surface to form a first conical valve surface, and the valve seat assembly is provided with a second conical valve surface, and the first conical valve surface and the second conical valve surface abut.

According to an embodiment of the present invention, a water containing cavity is formed in one side of the valve core body close to the water inlet end, second water through holes are formed in a side wall of the water containing cavity at a position corresponding to the water inlet end at intervals, and third water through holes for communicating inner cavities at two sides of the valve core body are annularly formed in a top wall of the water containing cavity far away from the water inlet end at intervals.

According to an embodiment of the present invention, the cylinder assembly includes a cylinder body and a piston, the piston is accommodated in the cylinder body and connected to the cylinder body, the first through hole is opened in the center of the piston, third through holes for the valve core assembly to pass through are respectively opened at two ends of the cylinder body along a central axis of the cylinder body, and both the piston and the cylinder body are hermetically connected to the valve core assembly.

According to an embodiment of the utility model, the cylinder body comprises a cylinder barrel, a cylinder head and a cylinder cover, wherein the cylinder head and the cylinder cover are respectively arranged at two ends of the cylinder barrel, the third through hole is respectively arranged at the center of the cylinder head and the center of the cylinder cover, one side of the cylinder barrel, which is close to the water inlet end, is connected with the supporting component, and the cylinder head and the supporting component are surrounded to form the buffer cavity.

According to an embodiment of the present invention, the cylinder assembly further includes a first sealing element and an upper gland, a fourth through hole is formed in the center of the upper gland, the third through hole in the cylinder cover is a stepped hole, the upper gland is fixed to the cylinder cover at the stepped hole, the first sealing element is clamped between the upper gland and the cylinder cover, and the valve core assembly is inserted into the fourth through hole.

One embodiment of the present invention has the following advantages or benefits:

the novel water curtain valve comprises a valve body assembly, a valve seat assembly, a valve core assembly, a cylinder assembly and a supporting assembly. Wherein the supporting component presss from both sides and locates between valve body subassembly and the cylinder subassembly, and the supporting component encloses with the cylinder subassembly and establishes and form the cushion chamber for during the cylinder subassembly drove case subassembly reciprocating motion, even sealed when producing the weeping because wearing and tearing between case subassembly and the supporting component, the medium can get into the cushion chamber, has avoided the medium directly to get into inside the cylinder subassembly and has leaded to the water curtain valve can not normally work.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is a front view of a novel water curtain valve shown according to an exemplary embodiment.

FIG. 2 is a cross-sectional view of a novel water curtain valve shown in accordance with an exemplary embodiment.

Fig. 3 is an enlarged view at a of fig. 2 of a novel water curtain valve according to an exemplary embodiment.

Wherein the reference numerals are as follows:

1. a valve body assembly; 11. a water inlet end; 12. a water outlet end; 13. a valve body; 14. sealing sleeves; 15. Pressing the sleeve; 2. a valve seat assembly; 21. a valve seat body; 211. a second tapered valve surface; 22. a valve housing; 221. a first water passage hole; 3. a valve core assembly; 31. a valve core body; 311. a first guide surface; 312. a second guide surface; 313. a first conical valve face; 314. a water containing cavity; 315. a second water through hole; 316. a third water through hole; 32. a valve stem; 33. a compression nut; 34. locking the nut; 4. a cylinder assembly; 41. a piston; 411. A first through hole; 42. a cylinder body; 421. a cylinder barrel; 422. a cylinder head; 4221. a second channel; 423. a cylinder cover; 4231. a first channel; 424. a third through hole; 43. a first seal member; 44. a gland is arranged; 441. A fourth via hole; 5. a support assembly; 51. a support sleeve; 511. a second through hole; 512. a buffer chamber; 52. A guide sleeve; 53. a water drain hole; 54. a second seal member; 6. triggering the nut; 7. a water drainage assembly; 8. A water inlet pipe; 9. and (5) discharging a water pipe.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

As shown in fig. 1 to 3, fig. 1 is a front view of a novel water curtain valve provided by the present invention. Fig. 2 shows a cross-sectional view of a novel water curtain valve provided by the present invention. Fig. 3 shows an enlarged view at a in fig. 2 provided by the present invention.

The novel water curtain valve comprises a valve body assembly 1, a valve seat assembly 2, a valve core assembly 3, a cylinder assembly 4 and a supporting assembly 5. One side of the valve body component 1 is provided with a water inlet end 11, and the side wall of the valve body component 1 close to the water inlet end 11 is provided with a water outlet end 12. The valve seat assembly 2 is accommodated in the valve body assembly 1 and is connected with the valve body assembly 1 in a sealing mode. One side of the valve core component 3 close to the water inlet end 11 is abutted against the valve seat component 2, and the other end of the valve core component 3 is connected with the trigger nut 6. The cylinder assembly 4 is used for driving the valve core assembly 3 to move along the axial direction of the valve core assembly 3, and a first through hole 411 for the valve core assembly 3 to pass through is formed in the center of the cylinder assembly 4. The center of the support component 5 is provided with a second through hole 511 for the valve core component 3 to pass through. Wherein, the supporting component 5 is connected to one side of the valve body component 1 far from the water inlet end 11 in a sealing manner, the air cylinder component 4 is connected with the supporting component 5 and encloses to form a buffer cavity 512, and the valve core component 3 is respectively arranged in the second through hole 511 and the first through hole 411 in a penetrating manner and is connected with the supporting component 5 and the air cylinder component 4 in a sealing manner.

Wherein, the water inlet end 11 of the valve body component 1 is connected with the water inlet pipe 8, the water outlet end 12 of the valve body component 1 is connected with the water outlet pipe 9, the upper end of the valve body component 1 is connected with the supporting component 5, the upper end of the supporting component 5 is connected with the cylinder component 4, the valve body component 1 is enclosed to form a cavity structure, the valve seat component 2 is accommodated in the cavity structure and is connected with the valve body component 1 below the water outlet end 12, the lower part of the valve core component 3 is abutted against the valve seat component 2, the middle section of the valve core component 3 is hermetically connected with the supporting component 5 when passing through the second through hole 511, the middle section of the valve core component 3 is hermetically connected with the cylinder component 4 when passing through the first through hole 411, the valve core component 3 is driven to reciprocate along the axial direction of the valve core component 3 by the movement of the cylinder component 4, and then the lower part of the valve core component 3 is abutted against or released from the valve seat component 2, the water curtain valve is closed when the valve core component 3 is abutted against the valve seat component 2, when the valve core component 3 is released from the valve seat component 2, the water curtain valve is opened to communicate the water inlet pipe 8 and the water outlet pipe 9. The supporting component 5 is clamped between the cylinder component 4 and the valve body component 1, the supporting component 5 and the cylinder component 4 are surrounded to form a buffer cavity 512, even if the sealing connection between the guide sleeve 52 and the valve rod 32 fails, a medium can enter the buffer cavity 512, the medium is periodically discharged from the buffer cavity 512, and the medium is prevented from directly entering the cylinder component 4 and affecting the normal use of the water curtain valve.

Preferably, the valve body assembly 1 includes a valve body 13, and a sealing sleeve 14 and a pressing sleeve 15 sequentially and hermetically connected to one side of the valve body 13 away from the water inlet end 11, the water inlet end 11 and the water outlet end 12 are respectively disposed on the valve body 13, an outer side wall of the valve sleeve 22 abuts against a side wall of the valve body 13, the valve seat body 21 is hermetically connected to the valve body 13, two ends of the valve sleeve 22 along a central axis of the valve sleeve 22 respectively abut against the valve seat body 21 and the sealing sleeve 14, a side wall of the sealing sleeve 14 close to the central axis of the sealing sleeve 14 abuts against the valve core body 31, so that the sealing sleeve 14 tightly presses the valve sleeve 22 above the valve seat body 21, two ends of the pressing sleeve 15 along the central axis of the pressing sleeve are respectively connected to the supporting assembly 5 and the sealing sleeve 14, and when the supporting assembly 5 is hermetically connected to the valve body assembly 1, the pressing sleeve 15 is utilized to sequentially abut against the valve sleeve 22 and the sealing sleeve 14 on the valve seat body 21.

In a preferred embodiment of the present invention, the novel water curtain valve further comprises a drainage assembly 7, the side wall of the support assembly 5 is provided with at least one drainage hole 53 at intervals along the circumferential direction thereof, and one side of the drainage assembly 7 is connected with the support assembly 5 so as to enable the inner cavity of the support assembly 5 to be communicated with the outside through the drainage assembly 7.

As shown in figures 1 and 2, the guide sleeve 52 and the valve rod 32 are connected in a sealing manner through the sealing element, even if the sealing element fails to cause leakage, the medium can be guided to the ground or a drainage ditch through the drainage holes 53 to be discharged, the medium is prevented from entering the cylinder assembly 4, the normal use of the water curtain valve is influenced, meanwhile, the drainage holes 53 are formed at intervals along the circumferential direction of the side wall of the supporting assembly 5 and face a plurality of directions, and even if leakage is found through the drainage holes 53, an operator can be reminded to take necessary maintenance measures, and the service life of the water curtain valve is prolonged.

Preferably, the upper end face of the support sleeve 51 is provided with a threaded hole, and a screw is installed during assembly, and a screw cap is clamped in a countersunk hole on the end face of a concave hole below the cylinder head 422 of the cylinder assembly 4 for assembly positioning, so that the installed water drainage assembly 7 is prevented from interfering with the water outlet end 12 of the valve body assembly 1.

In a preferred embodiment of the present invention, the support assembly 5 includes a support sleeve 51 and a guide sleeve 52, two ends of the support sleeve 51 are respectively connected with the valve body assembly 1 and the cylinder assembly 4, the support sleeve 51 and the cylinder assembly 4 are enclosed to form a buffer chamber 512, the second through hole 511 is opened in the center of the support sleeve 51, and the guide sleeve 52 is nested in the second through hole 511 and is hermetically connected with the valve core assembly 3.

As shown in fig. 1 and 2, the supporting sleeve 51 surrounds the peripheral side wall and the bottom wall of the buffer chamber 512, the cylinder head 422 of the cylinder assembly 4 is located on the top wall of the buffer chamber 512, the center of the supporting sleeve 51 is provided with a second through hole 511, and the guide sleeve 52 is clamped between the supporting sleeve 51 and the valve rod 32 when the valve rod 32 passes through the second through hole 511, so as to prevent the valve rod 32 from deviating during the reciprocating motion to affect the normal starting of the valve.

Preferably, the inner side wall and the outer side wall of the guide sleeve 52 are respectively provided with an annular groove which is recessed into the guide sleeve 52, a second sealing element 54 is arranged in the groove, the guide sleeve 52 is respectively connected with the support sleeve 51 and the valve rod 32 in a sealing manner through the second sealing element 54, the second sealing element 54 is an effective pressing type one-way sealing for the piston 41 rod, and consists of a U-shaped ring and a rubber energizing element which are embedded, when the pressure is low, the pre-compression of the sealing end surface provides low-pressure pre-tightening force to obtain effective low-pressure sealing, and when the pressure is increased, the rubber energizing element applies force to the U-shaped ring to deform the U-shaped ring, so that the sealing contact surface is increased to achieve good sealing effect.

In a preferred embodiment of the present invention, the valve seat assembly 2 comprises a valve seat body 21 and a valve sleeve 22, the valve seat body 21 is accommodated in the valve body assembly 1 and is connected to one side of the valve body assembly 1 close to the water inlet end 11 in a sealing manner, the valve sleeve 22 is connected to the valve seat body 21 and the valve body assembly 1 along two ends of the central axis thereof, respectively, the side wall of the valve sleeve 22 abuts against the side wall of the valve body assembly 1, and the valve sleeve 22 is provided with first water through holes 221 at positions corresponding to the water outlet end 12 at intervals.

As shown in fig. 1 to 3, the valve seat body 21 is disposed below a side of the valve body 13 of the valve body assembly 1 close to the water inlet end 11, an upper end of the valve sleeve 22 abuts against the sealing sleeve 14 of the valve body assembly 1, a lower end of the valve sleeve 22 abuts against the valve seat body 21, a plurality of first water through holes 221 are annularly disposed on the valve sleeve 22 at intervals, the first water through holes 221 are long strips with the same length and size and longitudinally extend along a central axis of the valve sleeve 22, and the first water through holes 221 are disposed at positions corresponding to the water outlet end 12 to facilitate the medium to reach the water outlet end 12.

In a preferred embodiment of the present invention, the valve core assembly 3 includes a valve core body 31 and a valve rod 32, the valve core body 31 abuts against the valve seat assembly 2, one side of the valve rod 32 near the water inlet end 11 is connected to the valve core body 31, the valve rod 32 is inserted through the second through hole 511 and the first through hole 411, and the other side of the valve rod is connected to the trigger nut 6, and the valve core body 31 abuts against the valve seat assembly 2.

As shown in fig. 1 and 2, the side wall of the valve core body 31 away from the central axis thereof abuts against the valve seat body 21 and the valve sleeve 22, the two ends of the valve rod 32 are connected with the valve core body 31 and the trigger nut 6, respectively, and when the valve rod 32 passes through the first through hole 411, the cylinder assembly 4 is used to drive the valve rod 32 to move back and forth along the axial direction of the valve rod 32, and simultaneously, the valve core body 31 is driven to move back and forth to abut against the valve seat assembly 2 or to release the abutment.

Preferably, the valve core body 31 is provided with a chamfer on one side away from the central axis and close to the water inlet end 11, so that the sealing element can be effectively prevented from being scratched during installation.

Preferably, when the valve rod 32 passes through the first through hole 411, the valve rod 32 is connected with the piston 41 and moves synchronously with the piston 41, when the valve rod 32 passes through the second through hole 511, a sealing member is respectively clamped between the valve rod 32 and the cylinder head 422 and the cylinder cover 423, and the valve rod 32 is respectively connected with the cylinder head 422 and the cylinder cover 423 in a sealing manner through the sealing member.

In a preferred embodiment of the present invention, the sidewall of the valve plug body 31 away from the central axis thereof includes a first guide surface 311 and a second guide surface 312, the first guide surface 311 transitions to the second guide surface 312 to form a first conical valve surface 313, the valve seat assembly 2 is provided with a second conical valve surface 211, and the first conical valve surface 313 and the second conical valve surface 211 abut.

As shown in fig. 2 and 3, the first guide surface 311 is located on the outer side wall of the valve body 31 on the side far from the water inlet end 11, the second guide surface 312 is located on the outer side wall of the valve body 31 on the side near the water inlet end 11, the first guide surface 311 abuts against the sealing sleeve 14, the second guide surface 312 abuts against the valve seat body 21, the first guide surface 311 extends obliquely downward to the side near the central axis to the second guide surface 312 to form a first conical valve surface 313, the valve seat body 21 forms a second conical valve surface 211 inclined downward to the central axis at the position corresponding to the first conical valve surface 313, and the first conical valve surface 313 and the second conical valve surface 211 form surface-to-surface matching, thereby having excellent sealing effect. The cylinder assembly 4 drives the valve core assembly 3 to move up and down, so that the first conical valve surface 313 and the second conical valve surface 211 are abutted to seal, and the quick shut-off function of the valve is realized.

Preferably, an included angle exists between the cross sections of the first conical valve surface 313 and the second conical valve surface 211, so that a line-to-line fit is formed between the first conical valve surface 313 and the second conical valve surface 211, and the anti-pollution capacity between the first conical valve surface 313 and the second conical valve surface is improved.

In a preferred embodiment of the present invention, a water containing cavity 314 is formed on one side of the valve core body 31 close to the water inlet end 11, second water through holes 315 are formed at intervals on a side wall of the water containing cavity 314 corresponding to the position, and third water through holes 316 for communicating inner cavities at two sides of the valve core body 31 are formed at intervals on a top wall of the water containing cavity 314 far from the water inlet end 11.

As shown in fig. 1 and fig. 2, the lower end of the valve core body 31 is provided with the water containing cavity 314, which can effectively reduce the weight of the valve core body 31, the second water through holes 315 are annularly opened on the valve core body 31, the second water through holes 315 are long holes with different lengths, and the length direction extends along the central axis extending direction of the valve core body 31, so that water can reach the water outlet end 12 through the second water through holes 315, the third water through holes 316 are annularly arranged on the valve core body 31 at intervals, the third water through holes 316 extend from the bottom wall of the water containing cavity 314 to the side of the valve core body 31 far away from the water inlet end 11 along the central axis direction of the valve core body 31, and communicate the water containing cavity 314 with the upper inner cavity of the valve core body 31, which helps to achieve mutual cancellation of most of hydraulic forces at the upper and lower ends of the valve core body 31 when the water curtain valve operates, thereby achieving the purpose of self-balancing, and facilitating the opening and closing of the water curtain valve.

Preferably, the upper portion central authorities of case body 31 have set gradually first counter bore and second counter bore from top to bottom, the diameter of second counter bore is less than the diameter of first counter bore, third through water hole 316 ring is located the circumference of first counter bore and is extended to first counter bore by holding water chamber 314, the bottom of valve rod 32 holds in the second counter bore, be provided with the internal thread in the second counter bore, valve rod 32 passes through gland nut 33 and is connected with case body 31, scribble screw thread fastening and glue back fixed connection in the upper end screw hole of case body 31 in gland nut 33's the outside lower extreme screw thread department during the installation, thereby with valve rod 32 and case body 31 fixed connection, prevent to become flexible.

In a preferred embodiment of the present invention, the cylinder assembly 4 includes a cylinder 42 and a piston 41, the piston 41 is accommodated in the cylinder 42 and connected to the cylinder 42, the first through hole 411 is opened in the center of the piston 41, the cylinder 42 is opened at two ends along the central axis thereof with third through holes 424 for the valve core assembly 3 to pass through, and both the piston 41 and the cylinder 42 are hermetically connected to the valve core assembly 3.

As shown in fig. 1 and 2, the cylinder 42 encloses to form a cavity structure, the piston 41 is accommodated in the cavity structure and is abutted to the side wall of the cylinder 42, the piston 41 divides the cavity structure into an upper sub-cavity and a lower sub-cavity, the valve rod 32 is respectively connected with the cylinder 42 at the upper third through hole 424 and the lower third through hole 424 in a sealing and sliding manner, the first through hole 411 is arranged on the piston 41, the valve rod 32 is fixed to the piston 41 when passing through the first through hole 411, and when gas is respectively introduced into the two sub-cavities, the piston 41 drives the valve rod 32 to move back and forth.

Preferably, the valve rod 32 is connected with a piston 41 arranged in the cylinder assembly 4 in a sealing way at the middle shaft shoulder, and the piston 41 is pressed and fixed through a gasket and a locking nut 34.

In a preferred embodiment of the present invention, the cylinder 42 includes a cylinder 421, and a cylinder head 422 and a cylinder cap 423 respectively disposed at two ends of the cylinder 421, the third through hole 424 is respectively disposed at the center of the cylinder head 422 and the center of the cylinder cap 423, one side of the cylinder 421 near the water inlet end 11 is connected to the support assembly 5, and the cylinder head 422 and the support assembly 5 enclose to form the buffer chamber 512.

As shown in fig. 1 and 2, the cylinder 421 connects the cylinder head 422 and the cylinder cover 423, the cylinder 421, the cylinder head 422 and the cylinder cover 423 are surrounded to form a cavity structure, the third through hole 424 is respectively disposed at the center of the cylinder head 422 and the center of the cylinder cover 423, the valve rod 32 sequentially passes through the third through hole 424 of the cylinder head 422, the first through hole 411 of the piston 41 and the third through hole 424 of the cylinder cover 423 from bottom to top, the valve rod 32 is respectively connected with the cylinder head 422 and the cylinder cover 423 in a sealing manner through a sealing member, and the cylinder head 422 is located at the lower end of the cylinder body 42 and is connected with the components.

Preferably, the cylinder cover 423 is provided with a first passage 4231, the cylinder head 422 is provided with a second passage 4221, and the upper and lower sub-cavities are respectively communicated with an external air source through the first passage 4231 and the second passage 4221. It is convenient to respectively inject gas into the upper sub-cavity or the lower sub-cavity to push the piston 41 to drive the valve rod 32 to reciprocate.

In a preferred embodiment of the present invention, the cylinder assembly 4 further includes a first sealing element 43 and an upper gland 44, a fourth through hole 441 is formed in the center of the upper gland 44, the third through hole 424 on the cylinder head 423 is a stepped hole, the upper gland 44 is fixed to the cylinder head 423 at the stepped hole, the first sealing element 43 is clamped between the upper gland 44 and the cylinder head 423, and the valve core assembly 3 is inserted into the fourth through hole 441.

As shown in fig. 2, a certain gap is left between the upper end of the stepped hole of the cylinder head 423 and the upper end of the stepped hole, and the first sealing member 43 is placed in the gap before the upper gland 44 is mounted, so that the first sealing member 43 is prevented from being deformed, and a good sealing effect is achieved.

Preferably, the first sealing member 43 is formed by combining a rubber "O" ring and a teflon ring, and has the advantages of low friction, no creep, low starting force, high pressure resistance, etc., wherein the "O" ring is a force application element, provides sufficient sealing force, and compensates for the teflon ring.

The novel water curtain valve comprises a valve body assembly 1, a valve seat assembly 2, a valve core assembly 3, a cylinder assembly 4 and a supporting assembly 5. Wherein the supporting component 5 is clamped between the valve body component 1 and the air cylinder component 4, and the supporting component 5 and the air cylinder component 4 are enclosed to form a buffer cavity 512, so that in the reciprocating motion of the valve core component 3 driven by the air cylinder component 4, even if the sealing between the valve core component 3 and the supporting component 5 generates liquid leakage due to abrasion, the medium can enter the buffer cavity 512, and the phenomenon that the water curtain valve cannot work normally due to the fact that the medium directly enters the interior of the air cylinder component 4 is avoided. The surface-to-surface abutment of the first conical valve surface 313 and the second conical valve surface 211 reliably fulfills the requirement of a quick shut-off function of the valve. Through set up a plurality of outlet 53 at the lateral wall interval of support cover 51, discharge through outlet 53 with medium guide to ground or escape canal, prevent that the medium from scurrying into cylinder assembly 4, influence the normal use of water curtain valve, outlet 53 is seted up along the circumference interval of support component 5 lateral wall simultaneously, and towards a plurality of directions, even can discover the leakage problem through outlet 53, remind the operating personnel to take necessary maintenance measures, extension water curtain valve's life.

In embodiments of the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or units must have a specific direction, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the embodiments of the present invention.

In the description herein, the appearances of the phrase "one embodiment," "a preferred embodiment," or the like, are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims (10)

1. A novel water curtain valve, comprising:

the water inlet valve comprises a valve body assembly (1), wherein a water inlet end (11) is arranged on one side of the valve body assembly (1), and a water outlet end (12) is arranged on the side wall, close to the water inlet end (11), of the valve body assembly (1);

the valve seat assembly (2), the valve seat assembly (2) is accommodated in the valve body assembly (1) and is connected with the valve body assembly (1) in a sealing way;

the side, close to the water inlet end (11), of the valve core assembly (3) is abutted to the valve seat assembly (2), and the other end of the valve core assembly (3) is connected with the trigger nut (6);

the air cylinder assembly (4) is used for driving the valve core assembly (3) to move along the axial direction of the valve core assembly (3), and a first through hole (411) for the valve core assembly (3) to pass through is formed in the center of the air cylinder assembly (4); and

the center of the support component (5) is provided with a second through hole (511) for the valve core component (3) to pass through;

the supporting component (5) is connected to one side, far away from the water inlet end (11), of the valve body component (1) in a sealing mode, the air cylinder component (4) is connected with the supporting component (5) and is surrounded to form a buffer cavity (512), and the valve core component (3) penetrates through the second through hole (511) and the first through hole (411) respectively and is connected with the supporting component (5) and the air cylinder component (4) in a sealing mode.

2. The novel water curtain valve as claimed in claim 1, further comprising a water drainage assembly (7), wherein the side wall of the support assembly (5) is provided with at least one water drainage hole (53) at intervals along the circumferential direction of the side wall, and one side of the water drainage assembly (7) is connected with the support assembly (5) so that the inner cavity of the support assembly (5) is communicated with the outside through the water drainage assembly (7).

3. The novel water curtain valve is characterized in that the supporting assembly (5) comprises a supporting sleeve (51) and a guide sleeve (52), two ends of the supporting sleeve (51) are respectively connected with the valve body assembly (1) and the cylinder assembly (4), the supporting sleeve (51) and the cylinder assembly (4) are enclosed to form the buffer cavity (512), the second through hole (511) is formed in the center of the supporting sleeve (51), and the guide sleeve (52) is nested in the second through hole (511) and is in sealing connection with the valve core assembly (3).

4. The novel water curtain valve as claimed in claim 1, wherein the valve seat assembly (2) comprises a valve seat body (21) and a valve sleeve (22), the valve seat body (21) is accommodated in the valve body assembly (1) and is hermetically connected to one side of the valve body assembly (1) close to the water inlet end (11), the valve sleeve (22) is respectively connected with the valve seat body (21) and the valve body assembly (1) along two ends of a central axis thereof, a side wall of the valve sleeve (22) is abutted against a side wall of the valve body assembly (1), and the valve sleeve (22) is provided with first water through holes (221) at a position corresponding to the water outlet end (12) at intervals.

5. The novel water curtain valve is characterized in that the valve core assembly (3) comprises a valve core body (31) and a valve rod (32), the valve core body (31) is abutted to the valve seat assembly (2), one side, close to the water inlet end (11), of the valve rod (32) is connected with the valve core body (31), the valve rod (32) is arranged in the second through hole (511) and the first through hole (411) in a penetrating mode, the other side of the valve rod is connected with the trigger nut (6), and the valve core body (31) is abutted to the valve seat assembly (2).

6. The novel water curtain valve is characterized in that the side wall of the valve core body (31) away from the central axis of the valve core body comprises a first guide surface (311) and a second guide surface (312), the first guide surface (311) is transited to the second guide surface (312) to form a first conical valve surface (313), a second conical valve surface (211) is arranged on the valve seat assembly (2), and the first conical valve surface (313) is abutted to the second conical valve surface (211).

7. The novel water curtain valve as claimed in claim 5, wherein a water containing cavity (314) is formed in one side of the valve core body (31) close to the water inlet end (11), second water through holes (315) are formed in the side wall of the water containing cavity (314) at the corresponding position at intervals, and third water through holes (316) for communicating the inner cavities at two sides of the valve core body (31) are formed in the top wall of the water containing cavity (314) far away from the water inlet end (11) at intervals.

8. The novel water curtain valve is characterized in that the cylinder assembly (4) comprises a cylinder body (42) and a piston (41), the piston (41) is accommodated in the cylinder body (42) and connected with the cylinder body (42), the first through hole (411) is formed in the center of the piston (41), third through holes (424) for the valve core assembly (3) to pass through are respectively formed in two ends of the cylinder body (42) along the central axis of the cylinder body, and the piston (41) and the cylinder body (42) are both connected with the valve core assembly (3) in a sealing mode.

9. The novel water curtain valve as claimed in claim 8, wherein the cylinder body (42) comprises a cylinder barrel (421), and a cylinder head (422) and a cylinder cover (423) which are respectively arranged at two ends of the cylinder barrel (421), the third through hole (424) is respectively arranged at the center of the cylinder head (422) and the center of the cylinder cover (423), one side of the cylinder barrel (421) close to the water inlet end (11) is connected with the supporting component (5), and the cylinder head (422) and the supporting component (5) are enclosed to form the buffer chamber (512).

10. The novel water curtain valve as claimed in claim 9, wherein the cylinder assembly (4) further comprises a first sealing element (43) and an upper gland (44), a fourth through hole (441) is formed in the center of the upper gland (44), the third through hole (424) in the cylinder cover (423) is a stepped hole, the upper gland (44) is fixed to the cylinder cover (423) at the stepped hole, the first sealing element (43) is clamped between the upper gland (44) and the cylinder cover (423), and the valve core assembly (3) is arranged in the fourth through hole (441) in a penetrating manner.

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