CN215635002U

CN215635002U - High-pressure needle valve with split type valve rod

Info

Publication number: CN215635002U
Application number: CN202122020904.9U
Authority: CN
Inventors: 史艳斌
Original assignee: Shanxi Sidiren Hydraulic Technology Co ltd
Current assignee: Shanxi Sidiren Hydraulic Technology Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-01-25
Anticipated expiration: 2031-08-26

Abstract

The utility model discloses a high-pressure needle valve with a split-type valve rod, which comprises a valve body, wherein the bottom of the valve body is fixedly connected with a valve seat, the left side of the valve seat is fixedly connected with a medium inlet, the right side of the valve seat is fixedly connected with a medium outlet, the top of the valve body is provided with a connecting part, a fastening nut is arranged at the connecting part and the valve body, the bottom of the connecting part is provided with a vertical lower valve rod, the surface of the lower valve rod is sleeved with a packing gland and four groups of anti-abrasion gaskets from top to bottom, the top of the connecting part is fixedly connected with a movable mechanism, a rotating handle drives an upper valve rod and a threaded sleeve to rotate, the upper valve rod and the lower valve rod are enabled to move up and down through the mutual matching of the threaded sleeve and a threaded section, the valve head is enabled to realize on-off operation, the sensitivity of the lifting motion of the valve rod due to the over-tight joint force of the valve body and the valve rod is avoided, the lower valve rod moves downwards, the valve head is enabled to be clamped into a transition channel, the inclined surface of the seal sleeve and the inclined surface at the top of the transition channel are tightly jointed with the seal gasket, the sealing effect is improved.

Description

High-pressure needle valve with split type valve rod

Technical Field

The utility model belongs to the technical field of high-pressure needle valves, and particularly relates to a high-pressure needle valve with a split type valve rod.

Background

The high-pressure needle valve is a valve needle-shaped valve, the sealing between the valve needle and a valve seat depends on the close fit of the conical surface, the flow cross-sectional area is changed by the action of the sealing along the direction of a fluid, the high-pressure needle valve is used for stopping or adjusting the flow, the high-pressure needle valve is widely applied to the opening and closing action of pipelines of media such as petroleum, gas, water, steam and the like, the valve rod of a common high-pressure needle valve is tightly attached to the valve body, the lifting sensitivity of the valve rod is influenced, and after the high-pressure needle valve is used for a long time, the valve head is easy to wear, the sealing effect is influenced, and therefore, the high-pressure needle valve of a split type valve rod is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-pressure needle valve with a split type valve rod, and aims to solve the problem that the valve rod and a valve body are attached too tightly to influence the sensitivity of lifting movement in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: high-pressure needle valve with split type valve rod, which comprises a valve body, the bottom fixedly connected with disk seat of valve body, the left side fixedly connected with medium import of disk seat, the right side fixedly connected with medium export of disk seat, the top of valve body is equipped with connecting portion, and the bottom of connecting portion runs through the inner chamber that the top of valve body extended to the valve body, the junction of connecting portion and valve body is equipped with fastening nut, the bottom of connecting portion is equipped with vertical lower valve rod, gland and four groups of wear-resisting gaskets have been cup jointed from top to bottom to the surface of lower valve rod, and gland and four inner chamber wall fixed connection of group wear-resisting gasket and valve body, the top fixedly connected with movable mechanism of connecting portion, movable mechanism's right side is equipped with horizontal first pivot pole, the rotatory handle of right-hand member fixedly connected with of first pivot pole.

Preferably, the valve seat top is equipped with the transition chamber, and the transition chamber extends to the inner chamber top of valve seat, is equipped with the inlet channel of slope form between the inner chamber left side of transition chamber and valve seat, and the bottom of transition chamber is equipped with vertical transition passageway, and the inner chamber right side of transition passageway and valve seat is equipped with the play liquid passageway of slope form.

Preferably, the inner chamber of transition chamber is equipped with the valve head of toper form, and the top fixedly connected with assembly head of valve head, the bottom of lower valve rod run through in the middle of the bottom of valve body with the top fixed connection of assembly head, the fixed surface of valve head is connected with sealed the pad, the sealed seal cover of bottom fixedly connected with toper form that fills up, and the seal cover cup joints in the surperficial bottom of valve head.

Preferably, two sets of screw thread sections of fixedly connected with in the middle of the inner chamber left and right sides of connecting portion, the inner chamber of connecting portion are equipped with vertical last valve rod, and go up the valve rod and be located between two sets of screw thread sections, go up fixedly connected with thread bush in the middle of the surface of valve rod, and thread bush and two sets of screw thread section threaded connection, the bottom that the top through connection portion of lower valve rod extends to the valve rod is bottom, lower valve rod is equipped with the connecting piece with the one end that last valve rod is close to each other.

Preferably, the moving mechanism is including the mount pad, the inner chamber right side of mount pad is equipped with first bevel gear, the horizontal connecting rod of first bevel gear's right side fixedly connected with, and the right-hand member of connecting rod runs through the right side of mount pad and the left end fixed connection of first dwang, the left side top of first bevel gear be equipped with first bevel gear assorted second bevel gear, the vertical through connection of second bevel gear has the second dwang, the top of second dwang runs through the top of mount pad in the middle of extending to the top fixedly connected with locating piece of mount pad, the bottom of second dwang runs through the top fixed connection of the top of the middle and connecting portion of bottom of mount pad and last valve rod.

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

1. the rotating handle drives the first rotating rod, the connecting rod and the first conical gear to rotate, and the first conical gear is meshed with the second conical gear, so that the second conical gear drives the second rotating rod, the upper valve rod and the threaded sleeve to rotate;

2. the lower valve rod moves downwards to enable the valve head to be clamped into the transition passage, the inclined plane of the sealing sleeve is tightly attached to the inclined plane at the top of the transition passage and is matched with the sealing gasket, and the sealing effect is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a valve seat according to the present invention;

fig. 3 is a schematic structural diagram of the connecting part and the movable mechanism of the utility model.

In the figure: 1 valve body, 2 valve seats, 21 transition cavities, 22 liquid inlet channels, 23 transition channels, 24 liquid outlet channels, 25 valve heads, 26 assembling heads, 27 sealing gaskets, 28 sealing sleeves, 3 medium inlets, 4 medium outlets, 5 connecting parts, 51 threaded sections, 52 upper valve rods, 53 threaded sleeves, 54 connecting pieces, 6 fastening nuts, 7 lower valve rods, 8 packing gland covers, 9 anti-abrasion gaskets, 10 movable mechanisms, 101 mounting seats, 102 first conical gears, 103 connecting rods, 104 second conical gears, 105 second rotating rods, 106 positioning blocks, 11 first rotating rods and 12 rotating handles.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides a technical solution: a high-pressure needle valve with a split-type valve rod comprises a valve body 1, a valve seat 2 is fixedly connected at the bottom of the valve body 1, a medium inlet 3 is fixedly connected at the left side of the valve seat 2, a medium outlet 4 is fixedly connected at the right side of the valve seat 2, a connecting part 5 is arranged at the top of the valve body 1, the bottom of the connecting part 5 penetrates through the top of the valve body 1 and extends to the inner cavity of the valve body 1, a fastening nut 6 is arranged at the connecting part of the connecting part 5 and the valve body 1, a vertical lower valve rod 7 is arranged at the bottom of the connecting part 5, a packing gland 8 and four groups of anti-wear gaskets 9 are sleeved on the surface of the lower valve rod 7 from top to bottom, and the packing gland 8 and four groups of anti-wear gaskets 9 are fixedly connected with the inner cavity wall of the valve body 1, the top of the connecting part 5 is fixedly connected with a movable mechanism 10, the right side of the movable mechanism 10 is provided with a transverse first rotating rod 11, and the right end of the first rotating rod 11 is fixedly connected with a rotating handle 12.

In this embodiment, referring to fig. 2, a transition cavity 21 is arranged at the top of the valve seat 2, the transition cavity 21 extends to the top of the inner cavity of the valve seat 2, an inclined liquid inlet channel 22 is arranged between the transition cavity 21 and the left side of the inner cavity of the valve seat 2, a vertical transition channel 23 is arranged at the bottom of the transition cavity 21, an inclined liquid outlet channel 24 is arranged at the right side of the transition channel 23 and the inner cavity of the valve seat 2, and liquid is in flow transmission by the mutual cooperation of the liquid inlet channel 22, the transition cavity 21, the transition channel 23 and the liquid outlet channel 24;

in this embodiment, referring to fig. 3, two sets of threaded sections 51 are fixedly connected to the middle of the left side and the right side of an inner cavity of the connecting portion 5, the inner cavity of the connecting portion 5 is provided with a vertical upper valve rod 52, the upper valve rod 52 is located between the two sets of threaded sections 51, a threaded sleeve 53 is fixedly connected to the middle of the surface of the upper valve rod 52, the threaded sleeve 53 is in threaded connection with the two sets of threaded sections 51, the top end of the lower valve rod 7 extends to the bottom end of the upper valve rod 52 through the bottom of the connecting portion 5, a connecting member 54 is arranged at one end of the lower valve rod 7, which is close to the upper valve rod 52, the upper valve rod 52 drives the threaded sleeve 53 to rotate, and the upper valve rod 52 and the lower valve rod 7 move up and down through the mutual matching of the threaded sleeve 53 and the threaded sections 52;

in this embodiment, referring to fig. 1 and 3, the movable mechanism 10 includes an installation seat 101, a first bevel gear 102 is disposed on the right side of an inner cavity of the installation seat 101, a transverse connecting rod 103 is fixedly connected to the right side of the first bevel gear 102, the right end of the connecting rod 103 penetrates through the right side of the installation seat 101 and is fixedly connected to the left end of the first rotating rod 11, a second bevel gear 104 matched with the first bevel gear 102 is disposed on the top of the left side of the first bevel gear 102, the second bevel gear 104 is vertically connected to a second rotating rod 105 in a penetrating manner, the top end of the second rotating rod 105 penetrates through the middle of the top of the installation seat 101 and extends to the upper side of the installation seat 101 and is fixedly connected to a positioning block 106, the bottom end of the second rotating rod 105 penetrates through the middle of the bottom of the installation seat 101 and the top of the connecting portion 5 and is fixedly connected to the top end of the upper valve rod 52, the rotating handle 12 drives the first rotating rod 11, the connecting rod 103 and the first bevel gear 102 to rotate, due to the meshing connection between the first bevel gear 102 and the second bevel gear 104, the second bevel gear 104 drives the second rotating rod 105 and the upper valve rod to rotate;

example 2

Referring to fig. 1 and 2, this embodiment differs from the first embodiment in that: the inner chamber of transition chamber 21 is equipped with the valve head 25 of toper form, the top fixedly connected with assembly head 26 of valve head 25, the bottom of lower valve rod 7 runs through the bottom of valve body 1 in the middle of with the top fixed connection of assembly head 26, the fixed surface of valve head 25 is connected with sealed pad 27, the seal cover 28 of the bottom fixedly connected with toper form of sealed pad 27, and seal cover 28 cup joints in the surface bottom of valve head 25, lower valve rod 7 moves down, make the valve head 25 block advance in the transition passageway 23, the inclined plane of seal cover 28 closely laminates and seals up pad 27 and mutually support with the inclined plane at transition passageway 23 top, sealing effect has been improved.

The working principle is as follows: during the use, rotatory handle 12 drives first dwang 11, connecting rod 103 and first conical gear 102 rotate, because meshing connection between first conical gear 102 and the second conical gear 104, make second conical gear 104 drive second dwang 105 and go up valve stem and screw thread cover 53 and rotate, mutually support through screw thread cover 53 and screw thread section 52, make upper valve stem 52 and lower valve stem 7 reciprocate, make valve head 25 block enter transition passageway 23 or remove from transition passageway 23 in, realize the operation of switching on and off, lower valve stem 7 moves down, make valve head 25 block enter transition passageway 23 in, the inclined plane of seal cover 28 closely laminates with the inclined plane at transition passageway 23 top and seals up pad 27 and mutually supports, sealing effect has been improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. High pressure needle valve with split type valve rod, including valve body (1), its characterized in that: the bottom of the valve body (1) is fixedly connected with a valve seat (2), the left side of the valve seat (2) is fixedly connected with a medium inlet (3), the right side of the valve seat (2) is fixedly connected with a medium outlet (4), the top of the valve body (1) is provided with a connecting part (5), the bottom of the connecting part (5) penetrates through the top of the valve body (1) and extends to the inner cavity of the valve body (1), a fastening nut (6) is arranged at the joint of the connecting part (5) and the valve body (1), the bottom of the connecting part (5) is provided with a vertical lower valve rod (7), a packing gland (8) and four groups of anti-wear gaskets (9) are sleeved on the surface of the lower valve rod (7) from top to bottom, the packing gland (8) and the four groups of anti-wear gaskets (9) are fixedly connected with the inner cavity wall of the valve body (1), the top of the connecting part (5) is fixedly connected with a movable mechanism (10), the right side of the movable mechanism (10) is provided with a transverse first rotating rod (11), and the right end of the first rotating rod (11) is fixedly connected with a rotating handle (12).

2. The high pressure needle valve with split valve stem of claim 1, wherein: disk seat (2) top is equipped with transition chamber (21), just transition chamber (21) extend to the inner chamber top of disk seat (2), transition chamber (21) with be equipped with inlet channel (22) of slope form between the inner chamber left side of disk seat (2), the bottom of transition chamber (21) is equipped with vertical transition passageway (23), transition passageway (23) with the inner chamber right side of disk seat (2) is equipped with play liquid channel (24) of slope form.

3. The high pressure needle valve with split valve stem of claim 2, wherein: the inner chamber of transition chamber (21) is equipped with valve head (25) of toper form, the top fixedly connected with assembly head (26) of valve head (25), the bottom of lower valve rod (7) runs through in the middle of the bottom of valve body (1) with the top fixed connection of assembly head (26), the fixed surface of valve head (25) is connected with sealed the pad (27), the bottom fixedly connected with conical seal cover (28) of sealed pad (27), just seal cover (28) cup joint the surface bottom of valve head (25).

4. The high pressure needle valve with split valve stem of claim 1, wherein: two sets of screw thread sections (51) of fixedly connected with in the middle of the inner chamber left and right sides of connecting portion (5), the inner chamber of connecting portion (5) is equipped with vertical last valve rod (52), just go up valve rod (52) and be located two sets of between screw thread section (51), go up fixedly connected with thread bush (53) in the middle of the surface of valve rod (52), just thread bush (53) and two sets of screw thread section (51) threaded connection, the top of lower valve rod (7) is run through the bottom of connecting portion (5) extends to go up the bottom of valve rod (52), lower valve rod (7) with the one end that last valve rod (52) are close to each other is equipped with connecting piece (54).

5. The high pressure needle valve with split valve stem of claim 4, wherein: moving mechanism (10) is including mount pad (101), the inner chamber right side of mount pad (101) is equipped with first bevel gear (102), the horizontal connecting rod (103) of right side fixedly connected with of first bevel gear (102), just the right-hand member of connecting rod (103) runs through the right side of mount pad (101) with the left end fixed connection of first dwang (11), the left side top of first bevel gear (102) be equipped with first bevel gear (102) assorted second bevel gear (104), the vertical through connection of second dwang (105) of second bevel gear (104), the top of second dwang (105) is run through extend to in the middle of the top of mount pad (101) the top fixedly connected with locating piece (106) of mount pad (101), the bottom of second dwang (105) runs through in the middle of the bottom of mount pad (101) with the top of connecting portion (5) with go up (a), (101) the top of valve rod 52) The top ends of the two are fixedly connected.