CN220060576U

CN220060576U - High-pressure straight-through needle valve assembly

Info

Publication number: CN220060576U
Application number: CN202320439548.0U
Authority: CN
Inventors: 刘生玉; 霍俊逸
Original assignee: Smetik Kunshan Precision Machinery Co ltd
Current assignee: Smetik Kunshan Precision Machinery Co ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-11-21
Anticipated expiration: 2033-03-09

Abstract

The utility model discloses a high-pressure straight needle valve assembly, which relates to the technical field of straight needle valves and comprises a valve seat and a valve core unit; a material conveying hole is formed in the valve seat, and a first connecting seat and a second connecting seat are respectively arranged at two ends of the valve seat; the valve core unit comprises a mounting groove, a valve cover, an upper valve rod, a handle, a lower valve rod, an arc-shaped groove, a bushing, a connecting hole, a hole sealing, a pressing plate and a filler, wherein the mounting groove is arranged on the upper surface of a valve seat, the mounting groove is communicated with the material conveying hole, the bushing is slidably connected with the bottom end of the mounting groove, the connecting hole is formed in the part, located in the material conveying hole, of the bushing, the hole sealing is conducted on the bushing, the hole sealing is communicated with the connecting hole, the valve cover, the pressing plate and the filler are slidably connected in the mounting groove, and the filler is slidably connected with the upper surface of the bushing. The utility model reduces the upward force applied to the valve rod when the needle valve is closed, reduces the abrasion of the connecting screw thread of the valve rod, and ensures the service life of the valve rod.

Description

High-pressure straight-through needle valve assembly

Technical Field

The utility model relates to the technical field of straight-through needle valves, in particular to a high-pressure straight-through needle valve assembly.

Background

The needle valve is one kind of throttle valve, mainly comprises valve body, valve rod, needle and last valve gap, is equipped with the disk seat on the valve body, and the needle links to each other with the valve rod, threaded connection between valve rod and the last valve gap, and rotatory valve rod can change the overflow area between needle and the disk seat, realizes cutting off or adjusting the flow of medium, and the seal between needle and the disk seat relies on the conical surface of needle and the tight cooperation between the disk seat to reach.

The patent with the publication number of CN214617933U discloses an ultrahigh pressure straight-through hard seal needle valve, which comprises a valve body, the top threaded connection of valve body has the filler nut that extends to its inside, the inside swing joint of filler nut has the upper valve rod, the top movable mounting of upper valve rod has the handle main part, the top swing joint of handle main part has the handle screw with upper valve rod threaded connection, the top threaded connection of valve body has the fixed screw.

During the use process, when the needle valve is closed, the lower valve rod is continuously pushed upwards, so that abrasion of connecting threads of the valve rod is increased, the service life of the valve rod is influenced, and therefore, the high-pressure straight-through needle valve assembly is provided.

Disclosure of Invention

The utility model aims to overcome the existing defects, and provides a high-pressure straight-through needle valve assembly, which reduces upward force applied to a valve rod when the needle valve is closed, reduces abrasion of connecting threads of the valve rod, ensures service life of the valve rod and can effectively solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a high pressure straight needle valve assembly comprises a valve seat and a valve core unit;

valve seat: a material conveying hole is formed in the valve seat, and a first connecting seat and a second connecting seat are respectively arranged at two ends of the valve seat;

valve core unit: the novel valve comprises a mounting groove, a valve cover, an upper valve rod, a handle, a lower valve rod, an arc-shaped groove, a bushing, a connecting hole, sealing holes, a pressing plate and filling materials, wherein the mounting groove is formed in the upper surface of a valve seat, the mounting groove is communicated with the material conveying hole, the bushing is slidably connected with the bottom end of the mounting groove, the connecting hole is formed in the portion, located in the material conveying hole, of the bushing, sealing holes are formed in the bushing, the sealing holes are communicated with the connecting hole, the valve cover, the pressing plate and the filling materials are slidably connected in the mounting groove, the filling materials are slidably connected with the upper surface of the bushing, the pressing plate is slidably connected with the upper surface of the filling materials, the valve cover is slidably connected with the upper surface of the pressing plate, locking units are arranged on two sides of the valve cover, the upper valve rod is in threaded connection with the center of the upper valve rod, the handle is arranged at the upper end of the upper valve rod, the lower valve rod is rotatably connected with the lower valve rod, the sealing holes are slidably connected with the valve cover, the sealing holes and the pressing plate and the filling materials are arranged on two sides of the lower end of the lower valve rod.

The material conveying hole is a straight through hole, the first connecting seat and the second connecting seat are internal thread connecting pipes, the valve seat is connected with an external pipeline through the first connecting seat and the second connecting seat, the bushing is installed at the inner bottom end of the mounting groove, the connecting holes are communicated with the connecting holes, the filling material and the pressing plate are sequentially installed in the mounting groove, the filling material is positioned above the bushing, the pressing plate is positioned above the filling material, the valve cover is installed in the mounting groove, the valve cover installs the lower valve rod in the mounting groove through the upper valve rod, the lower valve rod is in sealing sliding connection with the pressing plate and the filling material, the lower end of the lower valve rod is positioned at the upper end of the hole sealing, and make the orientation of arc wall and connecting hole the same, compress tightly the valve gap on the disk seat through locking unit, compress tightly clamp plate and filler on the bush through the valve gap, during the use, carry out the material through straight-through defeated material hole and connecting hole, when needs are closed to the needle valve, drive the upper valve rod through the handle and rotate, the upper valve rod drives down the valve rod and remove, make the lower valve rod slide into in the hole sealing, seal the connecting hole through the lower valve rod, thereby realize closing the needle valve, when the needle valve is closed, the material in the defeated material hole is to the lower extreme both sides of lower valve rod exert pressure, disperse the pressure that the lower valve rod received through the arc wall, thereby protect the lower valve rod.

Further, the locking unit comprises a mounting seat, movable blocks, bolts, clamping seats and transverse plates, wherein the mounting seat is arranged on two sides of the valve cover, the movable blocks are connected to the mounting seat in a rotating mode, the movable blocks are connected with the bolts in a threaded mode, the transverse plates are connected to the end portions of the bolts in a rotating mode, the clamping seats are arranged on two sides of the valve seat, and the clamping seats are connected with the bolts in a sliding mode. After the valve deck is mounted on the valve seat, the bolt is moved, so that the bolt is slidably connected to the clamping seat, the transverse plate is located below the clamping seat, the bolt is rotated, the bolt drives the transverse plate to move, the transverse plate is pressed on the clamping seat, and the valve deck is firmly connected to the valve seat through the mounting seat, the movable block, the bolt, the clamping seat and the transverse plate.

Further, the device also comprises a first sealing ring, wherein the first sealing ring is arranged in the first connecting seat and the second connecting seat. The sealing performance of the first connecting seat and the second connecting seat when being connected with an external pipeline is improved through the first sealing ring.

Further, the protective sleeve is arranged on the handle and is provided with anti-skid patterns. The anti-skid property of the handle is improved through the protective sleeve, so that the handle can be rotated better.

Further, the valve further comprises a sealing groove and a second sealing ring, wherein the sealing groove is arranged on the upper surface of the valve seat, the second sealing ring is arranged on the valve cover, and the second sealing ring is in sealing sliding connection with the sealing groove. And the tightness between the valve cover and the valve seat is improved through the sealing groove and the second sealing ring.

Further, still include liftout hole and sealed end cap, the liftout hole sets up the lower surface at the disk seat, and communicates the material conveying hole and be located under the bush, and the liftout hole is the screw hole, and liftout hole internal thread connection has sealed end cap. Seal the liftout hole through the seal plug, when needs change the bush, take off the seal plug, use the screw rod to promote the bush through the liftout hole to can make the better taking out of bush change.

Compared with the prior art, the utility model has the beneficial effects that:

1. wear between lower valve rod and the disk seat is reduced through the bush to protect the disk seat, carry out the transport of material through straight-through delivery hole and connecting hole, block up the connecting hole through the lower valve rod, the lower valve rod is from the atress about changing into, and disperses the power that the lower valve rod received through the arc wall, thereby effectively reduce the impact force that valve rod and valve rod connecting screw received under the valve closing, guarantee the life of upper valve rod and lower valve rod.

2. Make diaphragm chucking on the cassette through mount pad, movable block and bolt to make valve gap fixed connection on the disk seat, be convenient for valve gap and disk seat carry out quick dismantlement installation, thereby be convenient for carry out inspection maintenance to the disk seat is inside, improve the convenience of overhauling.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a partial enlarged structure of the portion A in FIG. 1 according to the present utility model;

FIG. 3 is a schematic cross-sectional elevation view of the present utility model;

fig. 4 is a schematic top view of the present utility model.

In the figure: the valve comprises a valve seat 1, a valve core unit 2, a mounting groove 21, a valve cover 22, an upper valve rod 23, a handle 24, a lower valve rod 25, an arc-shaped groove 26, a bushing 27, a connecting hole 28, a hole sealing 29, a pressing plate 210, a filling material 211, a locking unit 3, a mounting seat 31, a movable block 32, a bolt 33, a clamping seat 34, a transverse plate 35, a material conveying hole 4, a first connecting seat 5, a second connecting seat 6, a first sealing ring 7, a protective sleeve 8, a sealing groove 9, a second sealing ring 10, a jacking hole 11 and a sealing plug 12.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present embodiment provides a technical solution: a high-pressure straight needle valve assembly comprises a valve seat 1 and a valve core unit 2;

valve seat 1: a material conveying hole 4 is formed in the valve seat, and a first connecting seat 5 and a second connecting seat 6 are respectively arranged at two ends of the valve seat 1;

valve core unit 2: the valve comprises a mounting groove 21, a valve cover 22, an upper valve rod 23, a handle 24, a lower valve rod 25, an arc-shaped groove 26, a bushing 27, a connecting hole 28, a hole sealing 29, a pressing plate 210 and a filler 211, wherein the mounting groove 21 is arranged on the upper surface of a valve seat 1, the mounting groove 21 is communicated with a material conveying hole 4, the bushing 27 is slidably connected with the bottom end of the inside of the mounting groove 21, the connecting hole 28 is arranged on the part of the bushing 27, the hole sealing 29 is arranged on the bushing 27, the hole sealing 29 is communicated with the connecting hole 28, the valve cover 22, the pressing plate 210 and the filler 211 are slidably connected in the mounting groove 21, the filler 211 is slidably connected with the upper surface of the bushing 27, the upper surface of the filler 211 is slidably connected with the pressing plate 210, the upper surface of the pressing plate 210 is slidably connected with the valve cover 22, locking units 3 are arranged on two sides of the valve cover 22, the upper valve rod 23 is in threaded connection with the center position of the upper valve rod 23, the lower valve rod 25 is rotatably connected with the lower valve rod 25, the lower valve rod 25 is hermetically slidably connected with the hole sealing 22, the hole sealing 210 and the filler 211, and the two sides of the lower end of the arc-shaped valve rod 25 are respectively provided with the arc-shaped groove 26.

The material conveying hole 4 is a straight through hole, the connecting seat I5 and the connecting seat II 6 are internally threaded connecting pipes, the valve seat 1 is connected with an external pipeline through the connecting seat I5 and the connecting seat II 6, the lining 27 is installed at the inner bottom end of the mounting groove 21, the connecting hole 28 is communicated with the connecting hole 28, the filling material 211 and the pressing plate 210 are sequentially installed in the mounting groove 21, the filling material 211 is located above the lining 27, the pressing plate 210 is located above the filling material 211, the valve cover 22 is installed in the mounting groove 21, the valve cover 22 is used for installing the lower valve rod 25 into the mounting groove 21 through the upper valve rod 23, the lower valve rod 25 is in sealing sliding connection with the pressing plate 210 and the filling material 211, the lower end of the lower valve rod 25 is located at the upper end of the sealing groove 29, the arc groove 26 is in the same with the orientation of the connecting hole 28, the valve cover 22 is pressed on the valve seat 1 through the locking unit 3, the pressing plate 210 and the filling material are pressed on the lining 27, the through the material conveying hole 4 and the connecting hole needle valve 28 are sequentially conveyed, when the needle valve cover 210 is needed to be closed, the needle valve rod 25 is driven to be closed, the upper valve rod 25 is driven to be in a sliding manner, and the lower valve rod 25 is driven to be in a sliding manner through the upper valve rod 25 and the lower valve rod 25 is driven to be in a sliding manner, and the lower valve rod 25 is in a sliding manner is driven to be in a sliding manner to be closed, and the lower end 25 is in a sliding manner, and the sealing groove 25 is in a sliding manner is driven to be in a sealing position and a sealing position, and a sealing rod 25 is in a sealing position, and a sealing position is in a sealing position.

The locking unit 3 comprises a mounting seat 31, movable blocks 32, bolts 33, clamping seats 34 and transverse plates 35, wherein the mounting seat 31 is arranged on two sides of the valve cover 22, the movable blocks 32 are rotatably connected to the mounting seat 31, the movable blocks 32 are in threaded connection with the bolts 33, the transverse plates 35 are rotatably connected to the end parts of the bolts 33, the clamping seats 34 are arranged on two sides of the valve seat 1, and the clamping seats 34 are slidably connected with the bolts 33. After the valve cover 22 is mounted on the valve seat 1, the bolt 33 is moved, so that the bolt 33 is slidably connected to the clamping seat 34, the transverse plate 35 is located below the clamping seat 34, the bolt 33 is rotated, the bolt 33 drives the transverse plate 35 to move, the transverse plate 35 is pressed on the clamping seat 34, and the valve cover 22 is firmly connected to the valve seat 1 through the mounting seat 31, the movable block 32, the bolt 33, the clamping seat 34 and the transverse plate 35.

The novel connecting seat further comprises a first sealing ring 7, and the first sealing ring 7 is arranged in the first connecting seat 5 and the second connecting seat 6. The sealing performance of the first connecting seat 5 and the second connecting seat 6 when being connected with an external pipeline is improved through the first sealing ring 7.

The protective cover 8, the protective cover 8 sets up on the handle 24, and the protective cover 8 is provided with the anti-skidding line. The anti-slip performance of the handle 24 is increased through the protective sleeve 8, so that the handle 24 can be rotated better.

The valve seat further comprises a sealing groove 9 and a second sealing ring 10, wherein the sealing groove 9 is arranged on the upper surface of the valve seat 1, the second sealing ring 10 is arranged on the valve cover 22, and the second sealing ring 10 is in sealing sliding connection with the sealing groove 9. The sealing between the valve cap 22 and the valve seat 1 is improved by the sealing groove 9 and the second sealing ring 10.

Still include liftout hole 11 and sealed end cap 12, liftout hole 11 sets up the lower surface at disk seat 1, and communicates delivery hole 4 and be located the bush 27 under, liftout hole 11 is the screw hole, and liftout hole 11 internal thread connection has sealed end cap 12. Seal plug 12 seals liftout hole 11, when needs change bush 27, take off seal plug 12, use the screw rod to promote bush 27 through liftout hole 11 to can make the better taking out of bush 27 change.

The working principle of the high-pressure straight-through needle valve assembly provided by the utility model is as follows: the bushing 27 is installed to the inner bottom end of the installation groove 21, the connecting hole 28 and the connecting hole 28 are communicated, the filler 211 and the pressing plate 210 are installed in the installation groove 21 in sequence, the filler 211 is located above the bushing 27, the pressing plate 210 is located above the filler 211, the valve cover 22 is installed in the installation groove 21, the valve cover 22 installs the lower valve rod 25 into the installation groove 21 through the upper valve rod 23, the lower valve rod 25 is connected to the pressing plate 210 and the filler 211 in a sealing sliding manner, the lower end of the lower valve rod 25 is located at the upper end of the hole sealing 29, the arc-shaped groove 26 and the connecting hole 28 face the same, the bolt 33 is moved, the bolt 33 is connected to the clamping seat 34 in a sliding manner, the transverse plate 35 is located below the clamping seat 34, the bolt 33 is rotated, the bolt 33 drives the transverse plate 35 to move, the transverse plate 35 is pressed on the clamping seat 34, the valve cover 22 is firmly connected to the valve seat 1, the pressing plate 210 and the filling material 211 are tightly pressed on the bushing 27 through the valve cover 22, the tightness between the valve cover 22 and the valve seat 1 is improved through the sealing groove 9 and the sealing ring II 10, the valve seat 1 is connected with an external pipeline through the connecting seat I5 and the connecting seat II 6, the tightness when the connecting seat I5, the connecting seat II 6 and the external pipeline are connected is improved through the sealing ring I7, during use, the material is conveyed through the through material conveying hole 4 and the connecting hole 28, when the needle valve is required to be closed, the handle 24 drives the upper valve rod 23 to rotate, the upper valve rod 23 drives the lower valve rod 25 to move, the lower valve rod 25 slides into the sealing hole 29, the connecting hole 28 is sealed through the lower valve rod 25, thereby realizing the closing of the needle valve, when the bushing 27 is worn and needs to be replaced, the sealing plug 12 is removed, the screw rod is used to push the bushing 27 through the jacking hole 11, thereby enabling better removal and replacement of the bushing 27.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A high pressure straight needle valve assembly, characterized by: comprises a valve seat (1) and a valve core unit (2);

valve seat (1): a material conveying hole (4) is formed in the valve seat, and a first connecting seat (5) and a second connecting seat (6) are respectively arranged at two ends of the valve seat (1);

valve core unit (2): the valve comprises a mounting groove (21), a valve cover (22), an upper valve rod (23), a handle (24), a lower valve rod (25), an arc-shaped groove (26), a bushing (27), a connecting hole (28), a hole sealing (29), a pressing plate (210) and a filling material (211), wherein the mounting groove (21) is arranged on the upper surface of a valve seat (1), the mounting groove (21) is communicated with a material conveying hole (4), the bushing (27) is slidably connected with the bottom end of the mounting groove (21), the connecting hole (28) is arranged on the part, located in the material conveying hole (4), of the bushing (27), the hole sealing (29) is arranged on the bushing (27), the hole sealing (29) is communicated with the connecting hole (28), the valve cover (22), the pressing plate (210) and the filling material (211) are slidably connected in the mounting groove (21), the upper surface of the filling material (211) is slidably connected with the pressing plate (210), the upper surface of the pressing plate (210) is slidably connected with the valve cover (22), locking units (3) are arranged on two sides of the mounting groove (22), the locking units (22) are arranged on the two sides of the valve cover (3), the center of the valve cover (22) and the valve rod (23) is connected with the upper end of the handle (23), the lower extreme rotation of upper valve rod (23) is connected lower valve rod (25), lower valve rod (25) seal sliding connection valve gap (22), hole sealing (29), clamp plate (210) and filler (211), the lower extreme both sides of lower valve rod (25) are provided with arc groove (26).

2. The high pressure straight through needle valve assembly of claim 1, wherein: the locking unit (3) comprises a mounting seat (31), a movable block (32), bolts (33), clamping seats (34) and transverse plates (35), wherein the mounting seat (31) is arranged on two sides of a valve cover (22), the movable block (32) is rotationally connected to the mounting seat (31), the bolts (33) are connected to the movable block (32) in a threaded mode, the transverse plates (35) are rotationally connected to the end portions of the bolts (33), the clamping seats (34) are arranged on two sides of the valve seat (1), and the clamping seats (34) are connected with the bolts (33) in a sliding mode.

3. The high pressure straight through needle valve assembly of claim 1, wherein: the connecting seat further comprises a first sealing ring (7), and the first sealing ring (7) is arranged in the first connecting seat (5) and the second connecting seat (6).

4. The high pressure straight through needle valve assembly of claim 1, wherein: the anti-skid handle is characterized by further comprising a protective sleeve (8), wherein the protective sleeve (8) is arranged on the handle (24), and the protective sleeve (8) is provided with anti-skid patterns.

5. The high pressure straight through needle valve assembly of claim 1, wherein: the valve seat is characterized by further comprising a sealing groove (9) and a second sealing ring (10), wherein the sealing groove (9) is arranged on the upper surface of the valve seat (1), the second sealing ring (10) is arranged on the valve cover (22), and the second sealing ring (10) is in sealing sliding connection with the sealing groove (9).

6. The high pressure straight through needle valve assembly of claim 1, wherein: still include liftout hole (11) and sealed end cap (12), liftout hole (11) set up the lower surface at disk seat (1), and intercommunication conveying hole (4) and be located under bush (27), liftout hole (11) are the screw hole, and liftout hole (11) internal thread connection has sealed end cap (12).