CN208381435U - A kind of preload locking nut structure for check valve valve body - Google Patents

Abstract

A kind of preload locking nut structure for check valve valve body, it is related to technical field of fastening, including valve body, valve nut and valve seat, the lower part of valve body is arranged in valve seat, valve nut is installed on the top of valve body, rubber ring is equipped between valve body and valve nut, nut is equipped on the top of valve nut, it is evenly spaced on the table top above valve nut to be equipped with multiple boss, the middle part between recess step and taper hole in the middle part of valve nut table top is equipped with threaded hole, the lower semisection of thread segment is threadedly coupled with threaded hole on valve rod, the rubber ring matched is equipped between bottom surface taper hole of the upper surface of the Cone Disc with valve nut, nut includes top nut and the pedestal that nut lower part is arranged in, pedestal is arranged in the recess step in the middle part of valve nut table top, wire hole inside nut is threadedly coupled with the upper semisection of thread segment on valve rod；The utility model structure is simple, convenient disassembly, and does not reduce the service life of rubber pad.

Description

A kind of preload locking nut structure for check valve valve body

Technical field

The utility model relates to technical field of fastening, more particularly, to a kind of preload locking screw for check valve valve body Parent structure.

Background technique

Well known, nut is a kind of common fastener, is had extensively in fields such as aviation, metallurgy, transport, mine, lathes General application；If junction is especially subject under alternating load vibratory impulse, the fastening of plain nut in heavy duty, large impact Effect can weaken, and lead to nut loosening；It is mainly to lean on the angle conical surface α certainly that high-pressure diaphragm pump check valve valve body is locking with valve nut at present Frictional force between lock and screw thread is easy vibration pine by 45 to 55 jerks per minute in equipment running process, and reliability is very It is low, it causes a whole set of check valve and associated components to scrap, not only influences to use, lead to unplanned halt production, increase maintenance and dimension Frequency repair, considerably increases maintenance workload and labor intensity of workers, while also increasing production cost；It is typically employed at present Threaded connection place spot welding is locking, locking using adhesive；After welding or using adhesive, nut cannot be dismantled again, no It can reuse.

Summary of the invention

In order to overcome the shortcomings in the background art, the utility model discloses a kind of preload lockings for check valve valve body Nut structure.

In order to realize the goal of the invention, the utility model adopts the following technical solution:

A kind of preload locking nut structure for check valve valve body, including valve body, valve nut and valve seat, the lower part of valve body It is arranged in valve seat, valve nut is installed on the top of valve body, rubber ring is equipped between valve body and valve nut, in valve nut Top is equipped with nut, and valve body includes the valve rod that integral structure is arranged and the Cone Disc being arranged in the middle part of valve rod, on Cone Disc top Valve rod be equipped with thread segment, the upper surface of Cone Disc is set as pyramidal, and the periphery of Cone Disc, which is set as diameter, successively to be reduced Chamfering shape, the lower end of valve rod is applied in valve seat, and the periphery of Cone Disc is matched with the internal taper hole of valve seat upper inner to be set It sets, it is evenly spaced on the table top above valve nut to be equipped with multiple boss, it is equipped with and tilts down at the outer ledge of boss Inclined-plane, the middle part of valve nut table top be equipped with downward recess step, on the bottom surface of valve nut be equipped with taper hole, recess platform Middle part between rank and taper hole is equipped with threaded hole, and the lower semisection of thread segment is threadedly coupled with threaded hole on valve rod, in Cone Disc The rubber ring that matches is equipped between the bottom surface taper hole of valve nut above, on the lower part of rubber ring periphery and valve seat internal taper hole Portion's inner conical surface is in contact setting, and nut includes top nut and the pedestal that nut lower part is arranged in, and the pedestal is arranged in valve spiral shell In recess step in the middle part of female table top, the wire hole inside nut is threadedly coupled with the upper semisection of thread segment on valve rod.

The preload locking nut structure for check valve valve body, inside valve seat from top to bottom be equipped with internal taper hole and Through-hole.

By adopting the above-described technical solution, the utility model has the following beneficial effects:

Preload locking nut structure described in the utility model for check valve valve body, by by the pedestal of nut lower part Setting is matched with the recess step in the middle part of valve nut table top, and the wire hole inside nut is connected through a screw thread with valve rod, increased The frictional force of pretightning force and threaded connection, effectively increases anti-loosing effect；The utility model structure is simple, convenient disassembly, and The service life of rubber pad is not reduced.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model nut；

Fig. 3 is the structural schematic diagram of the utility model valve nut；

Fig. 4 is the top view of Fig. 3；

Fig. 5 is the structural schematic diagram of the utility model valve body；

Fig. 6 is the structural schematic diagram of the utility model valve seat；

In figure: 1, valve body；2, nut；3, valve nut；4, rubber ring；5, valve seat；6, wire hole；7, pedestal；8, boss；9, tiltedly Face；10, table top；11, recess step；12, threaded hole；13, taper hole；14, thread segment；15, Cone Disc；16, internal taper hole；17, lead to Hole.

Specific embodiment

By the following examples can detailed explanation the utility model, open the purpose of this utility model is intended to protect All technological improvements in the scope of the utility model.

The preload locking nut structure of check valve valve body, including valve body 1,3 and of valve nut are used in conjunction with described in attached drawing 1-6 Valve seat 5, the lower part of valve body 1 are arranged in valve seat 4, are equipped with valve nut 3 on the top of valve body 1, valve body 1 and valve nut 3 it Between be equipped with rubber ring 4, valve body 1 includes the valve rod of integral structure setting and the Cone Disc 15 that is arranged in the middle part of valve rod, in Cone Disc The valve rod on 15 tops is equipped with thread segment 14, and the upper surface of Cone Disc 15 is set as pyramidal, and the periphery of Cone Disc 15 is set as The chamfering shape that diameter successively reduces, the lower end of valve rod are applied in valve seat 5, the periphery and 5 upper inner of valve seat of Cone Disc 15 Internal taper hole 16 match setting, on the table top 10 on valve nut 3 it is evenly spaced be equipped with multiple boss 8, in boss 8 It is equipped with the inclined-plane 9 tilted down at outer ledge, downward recess step 11 is equipped at the middle part of 3 table top 10 of valve nut, in valve The bottom surface of nut 3 is equipped with taper hole 13, and the middle part between recess step 11 and taper hole 13 is equipped with threaded hole 12, screw thread on valve rod The lower semisection of section 14 is threadedly coupled with threaded hole 12, is equipped between bottom surface taper hole 13 of the upper surface of the Cone Disc 15 with valve nut 3 The rubber ring 4 matched, the lower part of 4 periphery of rubber ring are in contact setting with 5 internal taper hole of valve seat, 16 top inner conical surface, nut 2 Including top nut and the pedestal 7 that nut lower part is arranged in, the recess platform at 3 table top of valve nut, 10 middle part is arranged in the pedestal 7 In rank 11, the wire hole 6 inside nut is threadedly coupled with the upper semisection of thread segment 14 on valve rod.

The preload locking nut structure for check valve valve body is equipped with internal taper hole from top to bottom inside valve seat 5 16 and through-hole 17.

Implement the preload locking nut structure described in the utility model for check valve valve body, during installation, by valve body 1 Lower part be mounted in valve seat 5, the lower end of valve rod is arranged in 5 through-hole 17 of valve seat, and Cone Disc 15 and 5 internal taper hole 16 of valve seat match Setting is closed, valve nut 3 passes through valve rod, and rubber ring 4, rubber are arranged between the upper surface of taper hole 13 and Cone Disc 15 of 3 lower part of valve nut The lower part of 4 periphery of cushion rubber is arranged in 5 internal taper hole 16 of valve seat, the screw thread of the lower semisection of thread segment 14 and valve nut 3 on valve rod Hole 12 is threadedly coupled, and the wire hole 6 inside 2 nut of nut is threadedly coupled with the upper semisection of thread segment 14 on valve rod, 2 lower part of nut Pedestal 7 is arranged in the recess step 11 of valve nut 3, by being arranged multiple boss 8 on the top of 3 table top 10 of valve nut, and Downward inclined-plane 9 is set at the outer ledge of boss 8, it is easy to disassemble.

The non-detailed portion of the utility model is the prior art.

The embodiment selected herein to disclose the goal of the invention of the utility model, is presently considered to be suitable, However, it should be understood that the utility model is intended to include the institute for the embodiment that all belong within the scope of this design and utility model It changes and improves.

Claims (2)

1. a kind of preload locking nut structure for check valve valve body, including valve body, valve nut and valve seat, it is characterized in that: valve The lower part of body is arranged in valve seat, is equipped with valve nut on the top of valve body, and rubber ring, valve are equipped between valve body and valve nut Body includes the valve rod of integral structure setting and the Cone Disc being arranged in the middle part of valve rod, and screw thread is equipped on the valve rod on Cone Disc top Section, the upper surface of Cone Disc is set as pyramidal, and the periphery of Cone Disc is set as the chamfering shape that diameter successively reduces, under valve rod End is applied in valve seat, and the periphery of Cone Disc matches setting with the internal taper hole of valve seat upper inner, on valve nut It is evenly spaced on table top to be equipped with multiple boss, the inclined-plane tilted down is equipped at the outer ledge of boss, in valve nut platform The middle part in face be equipped with downward recess step, on the bottom surface of valve nut be equipped with taper hole, between recess step and taper hole in Portion is equipped with threaded hole, and the lower semisection of thread segment is threadedly coupled with threaded hole on valve rod, at the bottom of the upper surface of Cone Disc and valve nut The rubber ring matched is equipped between face cone hole, the lower part of rubber ring periphery is in contact with valve seat internal taper hole top inner conical surface to be set It sets, nut includes top nut and the pedestal that nut lower part is arranged in, and the recess in the middle part of valve nut table top is arranged in the pedestal In step, the wire hole inside nut is threadedly coupled with the upper semisection of thread segment on valve rod.

2. the preload locking nut structure according to claim 1 for check valve valve body, it is characterized in that: inside valve seat It is equipped with internal taper hole and through-hole from top to bottom.