CN217271931U - High-sealing bayonet needle type valve - Google Patents

Abstract

The utility model discloses a high sealed cutting ferrule needle type valve, including valve body, valve gap and valve rod, both ends are equipped with import runner and export runner respectively about the valve body, and the lower part fixed mounting of valve rod has the sealed cap that is used for shutoff export runner inner, and the case is located under the sealed cap, be sealed sliding connection between the lateral wall of sealed cap and the epicoele downthehole wall. Be equipped with spacing shaft part on the valve rod, spacing shaft part and sealing cap sliding connection are equipped with reset spring between sealing cap and the valve gap. When the valve rod drives the valve core to move down, under the impact of medium, the sealing cap can move up relatively to the case, avoids closing the valve hard, treats that the case closes the valve after, and the sealing cap can move down under reset spring's effect and carry out the shutoff to export runner inner, has improved the sealing performance of valve, leaks in being difficult to producing, and when the valve rod drives the valve core and shifts up, the sealing cap follows the case and shifts up the realization and open simultaneously, does not influence opening of valve.

Description

High-sealing bayonet needle type valve

Technical Field

The utility model relates to a needle valve especially relates to a high sealed cutting ferrule needle valve.

Background

The cutting sleeve type needle valve is a valve which can be accurately adjusted, and a valve core of the needle valve is a sharp cone which is inserted into a valve seat like a needle. Needle valves are used in a wide variety of applications, such as cutting distances for flame cutting, where a knob for adjusting the flame temperature is the needle valve. The needle valve of the instrument is an important component in a measuring pipeline system of the instrument and is mainly used as a stop valve for opening or cutting off a pipeline passage. The existing needle valve mainly has the following defects: 1. after a valve core of the needle valve is abraded, medium leakage is easily generated inside the needle valve, and although the sleeve joint at the two ends of the valve body 2 is high in connection sealing performance, threads are easily damaged during installation and disassembly, and later maintenance operation is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the problem that above-mentioned prior art exists, provide a high sealed cutting ferrule needle type valve, the leakproofness is good, the inside difficult medium that produces of valve body leaks.

The utility model provides a technical scheme that its technical problem adopted: the utility model provides a high sealed ka trocars type valve, includes valve body, valve gap and valve rod, both ends are equipped with inlet flow channel and export runner respectively about the valve body, and inlet flow channel and export runner's outer end all are equipped with the cutting ferrule and connect, the valve body middle part is equipped with last accent and the cavity of resorption hole that is the counter bore structure, it is linked together with export runner and inlet flow channel respectively to go up accent and cavity of resorption hole, valve gap fixed mounting is in the top of last accent, and threaded mounting is gone up to the valve gap the valve rod, the valve rod inner be equipped with the sealed complex case in cavity of resorption hole upper end, the fixed hand wheel that is provided with in outer end of valve rod, the lower part fixed mounting of valve rod has the sealed cap that is used for shutoff outlet flow channel inner, the case is located under the sealed cap, be sealed sliding connection between the lateral wall of sealed cap and the last accent downthehole wall. The valve rod is provided with a limiting shaft section, the limiting shaft section is connected with the sealing cap in a sliding mode, and a reset spring is arranged between the sealing cap and the valve cover.

Further perfection, the bottom of the upper cavity hole is provided with an annular groove, and the annular groove is in concave-convex fit with the lower edge of the sealing cap.

Further perfection, be equipped with the spiral groove on the lateral wall of sealing cap, the fixed mounting has the spiral sealing strip in the spiral groove.

Further perfect, the cutting ferrule connects and includes lock nut, first toper cutting ferrule and second toper cutting ferrule, the bottom of valve body is equipped with transverse slide rail, and each slidable mounting in both ends has a slip jack catch, two about transverse slide rail be connected with the extension spring between the inner of slip jack catch, the outer end of slip jack catch is equipped with the hoop, and the hoop cooperatees with the ring groove who sets up in the lock nut outer end.

The utility model discloses profitable effect is: the utility model discloses be provided with the sealed cap that can move about from top to bottom in the outside of case, valve rod drive valve core moves down the time, under the impact of medium, sealed cap can move up by relative case, it is hard to avoid closing the valve, treat the case and close the valve after, sealed cap can move down and carry out the shutoff to export runner the inner under reset spring's effect, the sealing performance of valve has been improved, leak in being difficult to produce, the life of extension valve, when valve rod drive valve core shifts up, sealed cap follows the case and shifts up the realization and open simultaneously, do not influence opening of valve.

Drawings

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

description of the reference numerals: 1. the valve comprises a valve body, 11, an inlet flow passage, 12, an outlet flow passage, 13, an upper cavity hole, 14, a lower cavity hole, 15, an annular groove, 2, a valve cover, 3, a valve rod, 31, a valve core, 32, a hand wheel, 33, a sealing cap, 34, a spiral groove, 35, a spiral sealing strip, 36, a return spring, 4, a clamping sleeve connector, 41, a locking nut, 42, a first conical clamping sleeve, 43, a second conical clamping sleeve, 44, a transverse sliding rail, 45, a sliding clamping jaw, 46, a tension spring, 47, a clamping ring, 48 and an annular clamping groove.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

referring to figure 1: the high-sealing clamping sleeve needle type valve in the embodiment comprises a valve body 1, a valve cover 2 and a valve rod 3, wherein an inlet flow passage 11 and an outlet flow passage 12 are respectively arranged at the left end and the right end of the valve body 1, clamping sleeve joints 4 are respectively arranged at the outer ends of the inlet flow passage 11 and the outlet flow passage 12, an upper cavity hole 13 and a lower cavity hole 14 which are in counter bore structures are arranged in the middle of the valve body 1, the upper cavity hole 13 and the lower cavity hole 14 are respectively communicated with the outlet runner 12 and the inlet runner 11, the valve cover 2 is fixedly arranged at the top of the upper cavity hole 13, the valve rod 3 is arranged on the valve cover 2 in a threaded manner, the inner end of the valve rod 3 is provided with a valve core 31 which is in sealing fit with the upper end of the lower cavity hole 14, the outer end of the valve rod 3 is fixedly provided with a hand wheel 32, a sealing cap 33 for sealing the inner end of the outlet flow passage 12 is fixedly arranged at the lower part of the valve rod 3, the valve core 31 is positioned right below the sealing cap 33, and the outer side wall of the sealing cap 33 is in sealing sliding connection with the inner wall of the upper cavity hole 13. Be equipped with spacing shaft part on the valve rod 3, spacing shaft part and sealing cap 33 sliding connection are equipped with reset spring 36 between sealing cap 33 and the valve gap 2. The working principle is as follows: when the valve needs to be opened, the valve rod 3 can be rotated in the forward direction through the hand wheel 32, the valve rod 3 drives the valve core 31 to move upwards to be opened under the action of the threads, the sealing cap 33 moves upwards to be opened along with the valve core 31 at the same time, the opening of the valve is not influenced, at the moment, the return spring 36 is compressed, the inlet flow channel 11 and the outlet flow channel 12 are communicated, and a medium can normally pass through the valve; when the valve needs to be closed, the hand wheel 32 rotates in the reverse direction to rotate the valve rod 3, the valve rod 3 drives the valve core 31 to move downwards under the action of the threads to close, the medium impacts the sealing cap 33 upwards in the process that the valve core 31 moves downwards, the sealing cap 33 slides upwards relative to the valve core 31, the problem that the valve is hard to close is avoided, after the valve core 31 completely closes the valve, the sealing cap 33 can move downwards under the elastic action of the reset spring 36 to plug the inner end of the outlet flow channel 12, the sealing performance of the valve is improved, inner leakage is not prone to being generated, and the service life of the valve is prolonged.

The bottom of the upper cavity hole 13 is provided with an annular groove 15, the annular groove 15 is in concave-convex fit with the lower edge of the sealing cap 33, and the sealing performance of the sealing cap 33 on the inner end of the outlet flow passage 12 can be further improved.

Be equipped with spiral groove 34 on the lateral wall of sealing cap 33, fixed mounting has spiral sealing strip 35 in the spiral groove 34, can strengthen sealing cap 33 and go up between the cavity hole 13 sealing performance, when sealing cap 33 and 3 circumference of valve rod fixed, axial sliding connection, sealing cap 33 can follow valve rod 3 and rotate, reduces the damping that sealing cap 33 reciprocated, reduces the wearing and tearing of spiral sealing strip 35.

The ferrule joint 4 comprises a locking nut 41, a first tapered ferrule 42 and a second tapered ferrule 43, a transverse slide rail 44 is arranged at the bottom of the valve body 1, a sliding claw 45 is slidably mounted at each of the left end and the right end of the transverse slide rail 44, a tension spring 46 is connected between the inner ends of the sliding claws 45, a hoop 47 is arranged at the outer end of the sliding claw 45, and the hoop 47 is matched with an annular clamping groove 48 arranged at the outer end of the locking nut 41. The locking nut 41 is in threaded connection with two ends of the valve body, and when the locking nut 41 is locked, the first conical clamping sleeve 42 and the second conical clamping sleeve 43 can clamp the outer pipe tightly to form a hard sealing structure. Two slip jack catchs 45 can exert the pressure of lasting inside direction to two lock nuts 41 through ferrule 47 under the spring action of extension spring 46, and first toper cutting ferrule 42 and second toper cutting ferrule 43 deformation act on the stress on lock nut 41 during the sharing locking, can solve the screw thread and break down, the dead condition of card, make the cutting ferrule connect 4 easy to assemble and dismantle.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims (4)

1. A high-sealing cutting sleeve needle valve comprises a valve body (1), a valve cover (2) and a valve rod (3), the left end and the right end of the valve body (1) are respectively provided with an inlet flow passage (11) and an outlet flow passage (12), the outer ends of the inlet flow passage (11) and the outlet flow passage (12) are respectively provided with a cutting sleeve joint (4), an upper cavity hole (13) and a lower cavity hole (14) which are in a counter bore structure are arranged in the middle of the valve body (1), the upper cavity hole (13) and the lower cavity hole (14) are respectively communicated with the outlet runner (12) and the inlet runner (11), valve gap (2) fixed mounting is in the top of last accent (13), and threaded mounting is gone up in valve gap (2) valve rod (3), valve rod (3) the inner be equipped with down accent (14) upper end seal fit's case (31), the outer end of valve rod (3) is fixed and is provided with hand wheel (32), its characterized in that: a sealing cap (33) for sealing the inner end of the outlet flow channel (12) is fixedly mounted at the lower part of the valve rod (3), the valve core (31) is positioned right below the sealing cap (33), and the outer side wall of the sealing cap (33) is in sealing sliding connection with the inner wall of the upper cavity hole (13); be equipped with spacing shaft part on valve rod (3), spacing shaft part and sealing cap (33) sliding connection are equipped with reset spring (36) between sealing cap (33) and valve gap (2).

2. A high seal bayonet needle valve as defined in claim 1, wherein: the bottom of the upper cavity hole (13) is provided with an annular groove (15), and the annular groove (15) is in concave-convex fit with the lower edge of the sealing cap (33).

3. A high seal ferrule needle valve as in claim 1, wherein: the outer side wall of the sealing cap (33) is provided with a spiral groove (34), and a spiral sealing strip (35) is fixedly mounted in the spiral groove (34).

4. A high seal bayonet needle valve as defined in claim 1, wherein: cutting ferrule connects (4) and includes lock nut (41), first toper cutting ferrule (42) and second toper cutting ferrule (43), the bottom of valve body (1) is equipped with transverse slide rail (44), and each slidable mounting in both ends has one slip jack catch (45) about transverse slide rail (44), two be connected with extension spring (46) between the inner of slip jack catch (45), the outer end of slip jack catch (45) is equipped with hoop (47), and hoop (47) cooperate with ring groove (48) of setting in lock nut (41) outer end.

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