CN212717992U

CN212717992U - High-pressure needle type stop valve

Info

Publication number: CN212717992U
Application number: CN202020838649.1U
Authority: CN
Inventors: 洪文振
Original assignee: Jiangsu Huaying Valves Co ltd
Current assignee: Jiangsu Huaying Valves Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-03-16
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a high pressure needle type stop valve, include valve gap, valve rod, valve body and end the cavity, the inside top of valve body is provided with by the cavity, and the all fixedly connected with pipeline in both sides that ends the cavity, the inside threaded connection who ends the cavity has the valve gap, and the inside swing joint of valve gap has the valve rod, the bottom fixedly connected with valve clack sealing surface of valve rod, the bottom of the outside both sides of valve rod all is provided with first recess, and the first sealing washer of the all fixedly connected with in inside of first recess, the bottom of the outside both sides of valve gap all is provided with the second recess, and the all fixedly connected with second sealing washer in inside of second recess, fixedly connected with lock nut between valve gap and the valve body, the inside bottom of valve gap is provided with sliding structure, the top fixedly connected with drive structure of valve rod. The utility model discloses a top fixedly connected with drive structure at the valve rod can realize preventing that the valve rod pine from taking off, strengthens the seal stability of this device.

Description

High-pressure needle type stop valve

Technical Field

The utility model relates to a stop valve technical field specifically is a high-pressure needle type stop valve.

Background

The needle-type stop valve is widely applied to the field of transportation and transmission of various pipelines due to the convenience and simplicity in use, the convenience in disassembly, assembly and maintenance, but the flow regulation performance is poor, and the conveying speed cannot be controlled, so that the needle-type stop valve is not suitable for the regulation of large-flow and large-pressure-difference conveying pipelines.

In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art and are not solved:

(1) if the traditional high-pressure needle type stop valve stops materials with high flow rate, the valve rod is easy to rub the valve cover, so that the valve rod is inclined and abraded;

(2) if the traditional high-pressure needle type stop valve is impacted by high-flow-rate materials, the valve rod is easy to loosen, the sealing performance is poor, and the instability is caused;

(3) traditional high pressure needle type stop valve, it is difficult to control the material velocity of flow, consequently restricts to the velocity of flow and is suitable for with the less field of pressure differential, lacks the practicality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high pressure needle type stop valve to provide the valve rod in solving above-mentioned background art and easily incline, the valve rod easily returns smooth pine and take off and be difficult to the problem of the regulation velocity of flow.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high pressure needle type stop valve, includes valve gap, valve rod, valve body and ends the cavity, the inside top of valve body is provided with by the cavity, and ends the all fixedly connected with pipeline in both sides of cavity, the inside threaded connection who ends the cavity has the valve gap, and the inside swing joint of valve gap has the valve rod, the bottom fixedly connected with valve clack sealing surface of valve rod, the bottom of the outside both sides of valve rod all is provided with first recess, and the first sealing washer of the all fixedly connected with in inside of first recess, the bottom of the outside both sides of valve gap all is provided with the second recess, and the all fixedly connected with second sealing washer in inside of second recess, fixedly connected with lock nut between valve gap and the valve body, the inside bottom of valve gap is provided with sliding construction, the top fixedly connected with drive structure.

Preferably, sliding structure's inside has set gradually smooth pearl, buffer spring, spring groove and stopper, the spring groove all sets up in the inboard bottom of valve gap, the equal fixedly connected with stopper in one side of spring groove, and all evenly be provided with buffer spring between the stopper and one side of spring groove.

Preferably, the inside of stopper all is provided with the smooth pearl, and the diameter of smooth pearl all is less than the internal diameter of stopper.

Preferably, fixed block, casing, spout, telescopic link, fixed loop bar, reset spring and fixing bolt have set gradually in drive structure's inside, the bottom fixedly connected with valve rod of fixed block, the outside fixedly connected with casing of fixed block, and the inside of casing both sides all is provided with the spout, the inside all fixedly connected with telescopic links in top of spout, and the bottom swing joint of telescopic link has fixed loop bar, all fixedly connected with fixing bolt between fixed loop bar and the telescopic link.

Preferably, the outer side of the fixed loop bar is uniformly provided with return springs which are symmetrically distributed relative to the vertical middle line of the shell.

Preferably, the inner diameter of the fixed loop bar is larger than the diameter of the telescopic bar, the telescopic bars are embedded in the fixed loop bar, and the telescopic bars and the diameter of the fixed loop bar form a sliding structure.

Compared with the prior art, the beneficial effects of the utility model are that: the high-pressure needle type stop valve not only realizes the sliding fixation of the auxiliary valve rod and the valve cover, realizes the prevention of the valve rod from loosening, but also realizes the adjustment of the flow rate of materials;

(1) the sliding structure is arranged at the bottom end inside the valve cover, the sliding ball, the buffer spring, the spring groove and the limiting block are sequentially arranged inside the sliding structure, when the rotary driving structure drives the valve cover to spirally lift up and down inside the valve body, the shell is pressed at the moment, so that the sliding ball in the limiting block pulls the sliding rod downwards to perform cut-off sealing under the action force of the buffer spring through sliding assistance, the valve rod is prevented from being inclined and abraded due to high flow speed, and the whole operation is simple, convenient and quick;

(2) the top end of the valve rod is fixedly connected with a driving structure, a fixed block, a shell, a sliding chute, a telescopic rod, a fixed sleeve rod, a reset spring and a fixed bolt are sequentially arranged in the driving structure, when the pipeline material needs to be cut off and sealed, the shell is firstly rotated to drive the valve cover to be screwed and fastened downwards, at the moment, the shell is properly pressed, so that the valve rod fixedly connected with the bottom end of the shell moves downwards in the valve cover, and then the valve rod is locked and fixed through the fixed bolt, so that the valve rod can be prevented from loosening, and the sealing stability of the device is enhanced;

(3) can stably fasten the position of telescopic link in fixed loop bar under reset spring's effect through pressing down casing and locking fixing bolt to under the dual fixed of first sealing washer and second sealing washer, rely on the position of valve rod at the inside slide adjusting valve clack sealing surface of valve gap, realize the regulation to the inside material velocity of flow of pipeline, thereby improve the practicality of this device.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

fig. 2 is an enlarged partial cross-sectional view of the utility model at a in fig. 1;

fig. 3 is a schematic top view of the sliding structure of the present invention;

fig. 4 is a schematic view of the front cross-sectional structure of the driving structure of the present invention.

In the figure: 1. a valve cover; 2. a valve stem; 3. a valve body; 4. a pipeline; 5. a shut-off chamber; 6. a valve flap sealing surface; 7. a first seal ring; 8. a first groove; 9. a second seal ring; 10. a second groove; 11. locking the nut; 12. a sliding structure; 1201. a sliding bead; 1202. a buffer spring; 1203. a spring slot; 1204. a limiting block; 13. a drive structure; 1301. a fixed block; 1302. a housing; 1303. a chute; 1304. a telescopic rod; 1305. fixing the loop bar; 1306. a return spring; 1307. and (5) fixing the bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a high-pressure needle type stop valve comprises a valve cover 1, a valve rod 2, a valve body 3 and a stop chamber 5, wherein the stop chamber 5 is arranged at the top end inside the valve body 3, pipelines 4 are fixedly connected to two sides of the stop chamber 5, the valve cover 1 is in threaded connection inside the stop chamber 5, the valve rod 2 is movably connected inside the valve cover 1, a valve clack sealing surface 6 is fixedly connected to the bottom end of the valve rod 2, first grooves 8 are formed in the bottom ends of two outer sides of the valve rod 2, first sealing rings 7 are fixedly connected inside the first grooves 8, second grooves 10 are formed in the bottom ends of two outer sides of the valve cover 1, second sealing rings 9 are fixedly connected inside the second grooves 10, locking nuts 11 are fixedly connected between the valve cover 1 and the valve body 3, and a sliding structure 12 is arranged at the bottom end inside the valve cover;

the sliding ball 1201, the buffer spring 1202, the spring groove 1203 and the limiting block 1204 are sequentially arranged in the sliding structure 12, the spring grooves 1203 are all arranged at the bottom end of the inner side of the valve cover 1, the limiting block 1204 is fixedly connected to one side of the spring groove 1203, and the buffer springs 1202 are uniformly arranged between the limiting block 1204 and one side of the spring groove 1203;

sliding balls 1201 are arranged inside the limiting block 1204, and the diameters of the sliding balls 1201 are smaller than the inner diameter of the limiting block 1204;

specifically, as shown in fig. 1, fig. 2 and fig. 3, when the structure is used, firstly, when the rotary driving structure 13 drives the valve cover 1 to spirally lift up and down in the valve body 3, at this time, the housing 1302 is pressed, so that the sliding ball 1201 in the limiting block 1204 pulls the sliding rod 2 downwards to perform stop sealing under the action force of the buffer spring 1202 through the sliding assistance, thereby preventing the valve rod from inclining and wearing caused by fast flow rate, and enabling the whole operation to be simple, convenient and quick;

the top end of the valve rod 2 is fixedly connected with a driving structure 13;

a fixed block 1301, a shell 1302, a chute 1303, an expansion link 1304, a fixed loop bar 1305, a return spring 1306 and a fixed bolt 1307 are sequentially arranged in the driving structure 13, the bottom end of the fixed block 1301 is fixedly connected with a valve rod 2, the outer side of the fixed block 1301 is fixedly connected with the shell 1302, chutes 1303 are arranged in the two sides of the shell 1302, the top ends of the chutes 1303 are fixedly connected with the expansion link 1304, the bottom end of the expansion link 1304 is movably connected with the fixed loop bar 1305, and the fixed bolt 1307 is fixedly connected between the fixed loop bar 1305 and the expansion link 1304;

the outer sides of the fixed loop bars 1305 are uniformly provided with return springs 1306, and the return springs 1306 are symmetrically distributed around the vertical middle line of the shell 1302;

the inner diameters of the fixed loop bars 1305 are larger than the diameters of the telescopic bars 1304, the telescopic bars 1304 are embedded in the fixed loop bars 1305, and the diameters of the telescopic bars 1304 and the fixed loop bars 1305 form a sliding structure;

specifically, as shown in fig. 1 and 4, when the structure is used, firstly, when the pipeline 4 material needs to be sealed, firstly, the housing 1302 is rotated to drive the valve cap 1 to be screwed and fastened downwards, at this time, the housing 1302 is properly pressed, so that the valve rod 2 fixedly connected with the bottom end of the housing 1302 moves downwards in the valve cap 1, and then is locked and fixed by the fixing bolt 1307, and the valve rod 2 can be prevented from loosening, and the sealing stability of the device is enhanced.

The working principle is as follows: the utility model discloses when using, at first, when needing to cut off sealed to pipeline 4 material, at first rotatory casing 1302 drives valve gap 1 spiral fastening downwards, suitably presses down casing 1302 this moment for casing 1302 bottom fixed connection's valve rod 2 moves down in valve gap 1's inside, and it is fixed that the back is locked through fixing bolt 1307, can realize preventing that valve rod 2 pine from taking off, strengthens the sealing stability of this device.

Afterwards, when the rotary driving structure 13 drives the valve cap 1 to spirally lift up and down in the valve body 3, the housing 1302 is pressed at this time, so that the sliding ball 1201 in the limiting block 1204 is under the acting force of the buffer spring 1202, the sliding rod 2 is pulled downwards to perform stop sealing through sliding assistance, the valve rod inclination and abrasion caused by fast flow rate are prevented, and the whole operation is simple, convenient and quick.

Finally, the position of the telescopic rod 1304 in the fixed sleeve rod 1305 can be stably fastened under the action of the return spring 1306 by pressing the shell 1302 and locking the fixed bolt 1307, and under the double fixation of the first sealing ring 7 and the second sealing ring 9, the position of the valve rod 2 on the sliding adjusting valve clack sealing surface 6 inside the valve cover 1 is used for adjusting the flow rate of the materials inside the pipeline 4, so that the practicability of the device is improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a high pressure needle type stop valve, includes valve gap (1), valve rod (2), valve body (3) and ends cavity (5), its characterized in that: a stop chamber (5) is arranged at the top end inside the valve body (3), pipelines (4) are fixedly connected to two sides of the stop chamber (5), a valve cover (1) is connected to the inner threads of the stop chamber (5), a valve rod (2) is movably connected to the inner portion of the valve cover (1), a valve clack sealing surface (6) is fixedly connected to the bottom end of the valve rod (2), first grooves (8) are arranged at the bottom ends of two outer sides of the valve rod (2), first sealing rings (7) are fixedly connected to the inner portions of the first grooves (8), second grooves (10) are arranged at the bottom ends of two outer sides of the valve cover (1), second sealing rings (9) are fixedly connected to the inner portions of the second grooves (10), a locking nut (11) is fixedly connected between the valve cover (1) and the valve body (3), and a sliding structure (12) is arranged at the bottom end of the inner portion of, the top end of the valve rod (2) is fixedly connected with a driving structure (13).

2. A high pressure needle type stop valve according to claim 1, wherein: the novel valve is characterized in that a sliding ball (1201), a buffer spring (1202), a spring groove (1203) and a limiting block (1204) are sequentially arranged inside the sliding structure (12), the spring groove (1203) is arranged at the bottom end of the inner side of the valve cover (1), the limiting block (1204) is fixedly connected to one side of the spring groove (1203), and the buffer spring (1202) is uniformly arranged between the limiting block (1204) and one side of the spring groove (1203).

3. A high pressure needle type stop valve according to claim 2, wherein: the inside of the limiting block (1204) is provided with a sliding ball (1201), and the diameter of the sliding ball (1201) is smaller than the inner diameter of the limiting block (1204).

4. A high pressure needle type stop valve according to claim 1, wherein: the improved electric motor is characterized in that a fixing block (1301), a shell (1302), a sliding groove (1303), an expansion rod (1304), a fixing sleeve rod (1305), a reset spring (1306) and a fixing bolt (1307) are sequentially arranged inside the driving structure (13), the bottom end of the fixing block (1301) is fixedly connected with a valve rod (2), the shell (1302) is fixedly connected with the outer side of the fixing block (1301), the sliding grooves (1303) are arranged inside two sides of the shell (1302), the top ends of the sliding grooves (1303) are fixedly connected with the expansion rod (1304), the bottom end of the expansion rod (1304) is movably connected with the fixing sleeve rod (1305), and the fixing bolt (1307) is fixedly connected between the fixing sleeve rod (1305) and the expansion rod (1304).

5. A high pressure needle type shut-off valve according to claim 4, wherein: the outer sides of the fixed loop bars (1305) are uniformly provided with return springs (1306), and the return springs (1306) are symmetrically distributed around the vertical middle line of the shell (1302).

6. A high pressure needle type shut-off valve according to claim 4, wherein: the inner diameter of the fixed loop bar (1305) is larger than the diameter of the telescopic bar (1304), the telescopic bar (1304) is embedded in the fixed loop bar (1305), and the diameters of the telescopic bar (1304) and the fixed loop bar (1305) form a sliding structure.