CN213176820U

CN213176820U - Large-flow needle valve

Info

Publication number: CN213176820U
Application number: CN202022015811.2U
Authority: CN
Inventors: 叶梓健
Original assignee: Shenzhen Chuangjun Machinery Equipment Co ltd
Current assignee: Shenzhen Chuangjun Machinery Equipment Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-05-11
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses a large-flow needle valve, which comprises a valve body, wherein one end of the upper surface of the inner wall of the valve body is symmetrically provided with a liquid inlet and a liquid outlet, one side of the inner wall of the liquid inlet and the inner wall of the liquid outlet is provided with a flow passage, and the two flow passages are communicated with one end far away from the liquid inlet and the liquid outlet, one side of the valve body is provided with a valve hole, and the valve hole is communicated with the connecting point of the liquid inlet and the liquid outlet, the inner wall of the valve hole is provided with a needle valve device, the needle valve device comprises a fixed groove, an internal thread sleeve, a threaded rod, a valve core, an inserting groove, a limiting block, a limiting groove, a sealing ring and a rotating rod, one end of the valve hole far away from, the utility model discloses the wearing and tearing of reducible case improve life-span, and the people of being convenient for use.

Description

Large-flow needle valve

Technical Field

The utility model relates to a needle valve technical field specifically is a large-traffic needle valve.

Background

The needle valve is one of the throttle valves, and the adjusting precision is high. The valve is needle-shaped, and acts along the water flow direction to change the flow cross-sectional area and is used for cutting off or regulating the flow. The trim valve requires that the valve port be opened progressively larger, and continuously fine-tuned from closed to open to maximum. A needle valve plug accomplishes this function. The needle-shaped valve plug is generally made of a long needle made of quenched steel, and the valve seat is made of soft materials such as tin, copper and the like. The sealing between the valve needle and the valve seat is achieved by the tight fit of the conical surfaces of the valve needle and the valve seat, but most of the existing valve needles are adjusted by rotating and sliding when opened and closed, so that the valve core is greatly abraded, the service life of the valve core is influenced, and therefore a large-flow valve needle is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a large-traffic needle valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a large-traffic needle valve, includes the valve body, inlet and liquid outlet have been seted up to valve body inner wall upper surface one end symmetry, the runner has been seted up to inlet and liquid outlet inner wall one side, and two runners keep away from the one end intercommunication of inlet and liquid outlet, the valve opening has been seted up to valve body one side, and the tie point intercommunication of valve opening and inlet and liquid outlet, the needle valve device that life is high is installed to the valve opening inner wall.

Preferably, the needle valve device comprises a fixing groove, an internal thread sleeve, a threaded rod, a valve core, a slot, a limiting block, a limiting groove, a sealing ring and a rotating rod, a fixing groove is arranged at one end of the valve hole far away from the liquid inlet, an internal thread sleeve is fixed on the inner wall of the fixing groove, the inner wall of the internal thread sleeve is connected with a threaded rod in a threaded manner, one end of the threaded rod is rotationally connected with a valve core through a bearing, and one end of the valve core far away from the threaded rod is arranged in a conical shape, one end of the valve hole close to the liquid inlet and the liquid outlet is provided with a slot matched with the conical shape of the valve core, the valve core is inserted into the slot, one end of the valve core far away from the slot is symmetrically fixed with a limiting block, the inner wall of the valve hole is symmetrically provided with a limiting groove, and the limiting block is connected with the limiting groove in a sliding manner, the sealing rings are embedded and fixed on the outer side of the valve core at equal intervals, and a rotating rod is fixed at one end, away from the valve core, of the threaded rod.

Preferably, the fixed slot inner wall symmetry has seted up the draw-in groove, the internal thread sleeve outside symmetry is fixed with the locating piece, and locating piece and draw-in groove joint, the through-hole has been seted up to locating piece one end, the draw-in groove inner wall seted up with through-hole matched with screw hole, and the locating piece passes through bolt and draw-in groove fixed connection.

Preferably, the valve body upper surface is close to the one end of slot and has seted up the blow-down hole, and the link and the blow-down hole intercommunication of inlet and liquid outlet.

Preferably, the upper surface of the valve body is symmetrically provided with thread grooves.

Preferably, the valve body is integrally formed by cutting.

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

when the utility model is used, the pipeline is connected through the liquid inlet and the liquid outlet, and the plug is fixed in the vent hole, liquid enters through the liquid inlet and flows into the vent hole, and is discharged from the liquid outlet through the flow passage and can be opened and closed by the convection of the needle valve device, thereby driving the threaded rod to rotate in the internal threaded sleeve, leading the threaded rod to be screwed in the inner wall of the internal threaded sleeve, thereby pushing the valve core to slide, the threaded rod is rotationally connected with the valve core through the bearing, and the valve core is limited by the limiting block and the limiting groove, so that the valve core can only slide in the valve hole and can not rotate, thereby reducing the abrasion of the valve core, plugging the flow passage by inserting the valve core into the slot, and slowly sliding the valve core out of the slot and the flow passage, the opening of the flow passage can be controlled, the abrasion of the valve core can be reduced, the service life is prolonged, and the valve is convenient for people to use.

Drawings

FIG. 1 is a schematic view of the overall top view structure of the present invention;

FIG. 2 is a schematic view of the overall top cross-sectional structure of the present invention;

fig. 3 is a schematic view of the sectional structure of the needle valve device of the present invention.

In the figure: 1. a valve body; 2. a liquid inlet; 3. a liquid outlet; 4. a flow channel; 5. a valve bore; 6. a needle valve device; 61. fixing grooves; 62. an internally threaded sleeve; 63. a threaded rod; 64. a valve core; 65. a slot; 66. a limiting block; 67. a limiting groove; 68. a seal ring; 69. a rotating rod; 7. a card slot; 8. positioning blocks; 9. an emptying hole; 10. a thread groove.

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 and 2, a large-flow needle valve in the drawings comprises a valve body 1, a liquid inlet 2 and a liquid outlet 3 are symmetrically formed in one end of the upper surface of the inner wall of the valve body 1, the valve body 1 is integrally formed by cutting, flow channels 4 are formed in one sides of the inner walls of the liquid inlet 2 and the liquid outlet 3, one ends of the two flow channels 4 far away from the liquid inlet 2 and the liquid outlet 3 are communicated, a valve hole 5 is formed in one side of the valve body 1, the valve hole 5 is communicated with a connection point of the liquid inlet 2 and the liquid outlet 3, and a needle valve device 6 with a long.

Referring to fig. 3, the needle valve device 6 includes a fixing groove 61, an internal thread sleeve 62, a threaded rod 63, a valve core 64, a slot 65, a limiting block 66, a limiting groove 67, a sealing ring 68 and a rotating rod 69, the fixing groove 61 is formed at one end of the valve hole 5 away from the liquid inlet 2, the internal thread sleeve 62 is fixed on the inner wall of the fixing groove 61, the threaded rod 63 is connected to the inner wall of the internal thread sleeve 62 in a threaded manner, the valve core 64 is rotatably connected to one end of the threaded rod 63 through a bearing, the end of the valve core 64 away from the threaded rod 63 is arranged in a tapered manner, the slot 65 matched with the taper of the valve core 64 is formed at one end of the valve hole 5 close to the liquid inlet 2 and the liquid outlet 3, the valve core 64 is inserted into the slot 65, the limiting block 66 is symmetrically fixed at one end of, the outer side of the valve core 64 is equidistantly embedded and fixed with a sealing ring 68, one end of the threaded rod 63, which is far away from the valve core 64, is fixed with a rotating rod 69, the rotating rod 69 is rotated to drive the threaded rod 63 to rotate in the inner threaded sleeve 62, so that the threaded rod 63 is screwed in the inner threaded sleeve 62, the valve core 64 is further pushed to slide, the threaded rod 63 and the valve core 64 are rotatably connected through a bearing, the valve core 64 is limited by a limiting block 66 and a limiting groove 67, the valve core 64 can only slide in the valve hole 5 and cannot rotate, the abrasion of the valve core 64 is reduced, the valve core 64 is inserted into the slot 65 through the valve core 64, the flow channel 4 is blocked, the valve core 64 slowly slides out of the slot 65 and the flow channel.

Referring to fig. 3, the inner wall of the fixing groove 61 is symmetrically provided with clamping grooves 7, the outer side of the internal thread sleeve 62 is symmetrically fixed with positioning blocks 8, the positioning blocks 8 are clamped with the clamping grooves 7, one end of each positioning block 8 is provided with a through hole, the inner wall of each clamping groove 7 is provided with a threaded hole matched with the through hole, and the positioning blocks 8 are fixedly connected with the clamping grooves 7 through bolts, so that the internal thread sleeve 62 can be fixed conveniently.

Referring to fig. 1, a vent hole 9 is formed at an end of the upper surface of the valve body 1 close to the slot 65, and a connection end of the liquid inlet 2 and the liquid outlet 3 is communicated with the vent hole 9, so that the liquid in the flow channel 4 can be discharged through the vent hole 9.

Referring to fig. 1, the upper surface of the valve body 1 is symmetrically provided with thread grooves 10 for fixing the valve body 1.

The working principle is as follows:

when in use, the liquid inlet 2 and the liquid outlet 3 are connected with a pipeline, a plug is fixed in the emptying hole 9, liquid enters through the liquid inlet 2 and flows into the emptying hole, and is discharged from the liquid outlet 3 through the flow passage 4, and is convected to be opened and closed through the needle valve device 6, and when in use, by rotating the rotating rod 69, thereby driving the threaded rod 63 to rotate in the internal threaded sleeve 62, so that the threaded rod 63 is screwed in the inner wall of the internal threaded sleeve 62, further pushing the valve core 64 to slide, the threaded rod 63 is rotationally connected with the valve core 64 through a bearing, and the valve core 64 is limited by the limiting block 66 and the limiting groove 67, so that the valve core 64 can only slide in the valve hole 5 and can not rotate, further, the abrasion of the valve core 64 is reduced, the valve core 64 is inserted into the insertion groove 65 to block the flow passage 4, and the valve core 64 slowly slides out of the insertion groove 65 and the flow passage 4 to control the opening of the flow passage 4.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a large-traffic needle valve, includes valve body (1), its characterized in that: inlet (2) and liquid outlet (3) have been seted up to valve body (1) inner wall upper surface one end symmetry, runner (4) have been seted up to inlet (2) and liquid outlet (3) inner wall one side, and two runner (4) keep away from the one end intercommunication of inlet (2) and liquid outlet (3), valve opening (5) have been seted up to valve body (1) one side, and the tie point intercommunication of valve opening (5) and inlet (2) and liquid outlet (3), needle valve device (6) is installed to valve opening (5) inner wall.

2. A high flow needle valve according to claim 1, characterized in that: the needle valve device (6) comprises a fixing groove (61), an internal thread sleeve (62), a threaded rod (63), a valve core (64), a slot (65), a limiting block (66), a limiting groove (67), a sealing ring (68) and a rotating rod (69), wherein the fixing groove (61) is formed in one end, away from the liquid inlet (2), of the valve hole (5), the internal thread sleeve (62) is fixed on the inner wall of the fixing groove (61), the threaded rod (63) is connected to the inner wall of the internal thread sleeve (62) in a threaded mode, one end of the threaded rod (63) is rotatably connected with the valve core (64) through a bearing, one end, away from the threaded rod (63), of the valve core (64) is arranged in a conical mode, the slot (65) matched with the conical shape of the valve core (64) is formed in one end, close to the liquid inlet (2, the one end symmetry that slot (65) were kept away from in case (64) is fixed with stopper (66), spacing groove (67) have been seted up to valve opening (5) inner wall symmetry, and stopper (66) and spacing groove (67) sliding connection, case (64) outside equidistance is inlayed and is fixed with sealing washer (68), the one end that case (64) were kept away from in threaded rod (63) is fixed with bull stick (69).

3. A high flow needle valve according to claim 2, characterized in that: draw-in groove (7) have been seted up to fixed slot (61) inner wall symmetry, internal thread sleeve (62) outside symmetry is fixed with locating piece (8), and locating piece (8) and draw-in groove (7) joint, the through-hole has been seted up to locating piece (8) one end, draw-in groove (7) inner wall seted up with through-hole matched with screw hole, and locating piece (8) pass through bolt and draw-in groove (7) fixed connection.

4. A high flow needle valve according to claim 2, characterized in that: emptying hole (9) has been seted up to the one end that valve body (1) upper surface is close to slot (65), and the link and the emptying hole (9) intercommunication of inlet (2) and liquid outlet (3).

5. A high flow needle valve according to claim 1, characterized in that: the upper surface of the valve body (1) is symmetrically provided with thread grooves (10).

6. A high flow needle valve according to claim 1, characterized in that: the valve body (1) is integrally formed by cutting.