CN208793662U - A kind of soft seal regulating valve - Google Patents

Abstract

The utility model discloses a kind of soft seal regulating valves, it is intended to provide a kind of long service life, the soft seal regulating valve of good seal performance, its key points of the technical solution are that, including valve body, the valve inner is equipped with valve seat, the top of the valve seat is equipped with soft sealing valve seat, outer wall at the top of the soft sealing valve seat is equipped with groove, the soft sealing valve seat and valve body form confined space and wrap valve seat, the top of the soft sealing valve seat is equipped with soft sealer, the soft sealer includes the soft seal ontology for being embedded in the inserting block of trench interiors and being equipped at the top of inserting block, the soft seal bodies top offers the first groove, the soft seal body bottom portion offers the second groove, first inside grooves are connected with valve rod, second inside grooves are connected with cage spool.By the design of soft sealing structure, internal part generates the case where damaging when reducing valve running, enhances the sealing performance of valve.

Description

A kind of soft seal regulating valve

Technical field

The utility model relates to valve manufacture field, in particular to a kind of soft seal regulating valve.

Background technique

Soft seal refers to that the two sides side of sealing pair be the metal material other side is flexible nonmetallic materials, this close The sealing performance of envelope is preferable, but non-refractory, and is prone to wear, and mechanicalness is poor, therefore the easily aging of general soft seal, The service life of itself is usually shorter, and the valve service life that common soft seal is arranged is also usually shorter.

Currently, the air bladder that the Chinese patent of Publication No. CN207333733U discloses a kind of soft sealing structure is adjusted Valve, it includes valve body, valve seat, spool, valve deck, valve rod and pneumatic diaphragn actuating mechanism, is threadedly coupled valve seat in the valve seat Compacting ring is equipped with soft seal seat between the seat compression circle and valve seat.

Although the pneumatic diaphragm control valve of this soft sealing structure is firmly wrapped up soft sealing valve seat by seat compression circle Sealing surface is only reserved in valve seat, soft sealing valve seat is prevented to be washed, and maintains the good sealing performance of soft seal, but does not have In view of soft seal and the service life problem of setting flexible sealing valve, the shorter soft seal of service life not only need continually Replacement, equally also will affect the matched valve used, causes the service life of valve entirety shorter, the sealing of valve internal Performance can also be affected therewith.

Utility model content

The purpose of the utility model is to provide a kind of soft seal regulating valve, with long service life, good seal performance Advantage.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of soft seal regulating valve, including valve body, the valve inner are equipped with valve seat, and the top of the valve seat is equipped with soft close Valve seat is sealed, the outer wall at the top of the soft sealing valve seat is equipped with groove, and the soft sealing valve seat and valve body form confined space package Firmly valve seat, the top of the soft sealing valve seat are equipped with soft sealer, and the soft sealer includes being embedded in inserting for trench interiors The soft seal ontology for entering block and being equipped at the top of inserting block, the soft seal bodies top offers the first groove, described soft Seal body bottom offers the second groove, and first inside grooves are connected with valve rod, and second inside grooves are connected with Cage spool.By using above-mentioned technical proposal, the adjusting of valve and sealing function are separated from each other by the design of soft sealing structure, To be effectively protected soft seal, the inserting block of soft sealer bottom setting can be embedded in the groove of soft sealing valve seat, into One step strengthens the sealing performance of soft seal bottom, solved compared to common soft sealing structure be not easy positioning be not easy to lock ask Topic, the structure of soft seal are full enclosed, the deformation that cold flow properties occur for soft sealing valve seat can be effectively prevented, to reduce soft There is a situation where slow permanent deformations for sealing, that is, reduce a possibility that creep occurs for soft sealing valve seat, extend soft close The service life of envelope, thus the service life of poppet entirety, soft sealing valve seat can be uniform by cage spool and valve deck Ground applies pressure to valve seat, and pressure can keep constant constant, and solving common soft sealing structure, there are stress alternations Problem forms confined space and wraps up valve seat, so that having between soft sealing valve seat and valve seat sufficiently between soft sealing valve seat and valve body Contact surface, thus guarantee contact surface can it is allowable than pressure work.

Further setting: the inner wall of first bottom portion of groove is equipped with internal screw thread, and the valve rod is located at bottom in the first groove The outer wall in portion is equipped with the external screw thread used with screw-internal thread fit.

By using above-mentioned technical proposal, valve rod and soft seal are detachable structure, when soft sealing structure and other valves When interior components are damaged, valve easy to disassemble is replaced the components of damage, valve rod and the close spiral shell of soft seal Line connection can guarantee integrally-built reliability when valve running.

Further setting: the outer wall that the soft seal bottom does not open up the second groove is equipped with the metal block of protrusion, described It is located at the top of soft sealing valve seat in valve body and is equipped with bracket.

By using above-mentioned technical proposal, the height of soft seal bottom protrusion metal block is tightly controlled, and prevents valve from transporting As when generate excessive compression so as to cause soft seal conquassation damage, will be lost when soft seal is damaged rebound sealing Effect makes valve finally completely lose sealing performance so as to cause leakage, and bracket is fixed on valve inner, for being fixed Soft sealing valve seat.

Further setting: the outer wall of the valve stem top is arranged with bearing.

By using above-mentioned technical proposal, valve rod driving rubs when the bearing of stem exterior installation can reduce valve running Torque is wiped, when what is installed at the top of regulating valve is the wheel shaft of manual operation, the comfort level of manual operation is able to ascend, works as regulating valve When what top was installed is Pneumatic actuator, it is equally able to ascend the timeliness of valve rod rotation, reducing may deposit in control system Error.

Further setting: the top of the valve body is equipped with valve deck, and the valve deck is equipped with the fixation through valve deck and valve body Bolt.

By using above-mentioned technical proposal, the confined space of valve is formed between valve deck and valve body, fixing bolt is in valve Valve deck and valve body are capable of fixing when running, when needing to be replaced valve internal part of damage, valve easy to disassemble.

Further setting: being filled with airtight and watertight padding between the bearing and valve deck, the top of the airtight and watertight padding, which is equipped with, to be filled out Expect gland.

By using above-mentioned technical proposal, airtight and watertight padding can enhance the sealing performance between valve rod and valve deck, filler pressure Lid can compress airtight and watertight padding and further enhance sealing performance, and be set to when can reduce valve running pair of Bearing outer The abrasion that airtight and watertight padding generates, extends the service life of valve.

Further setting: the screw top of the valve deck is connected with the clamping screw at the top of valve deck.

By using above-mentioned technical proposal, being set to the clamping screw at the top of valve deck can give gland bigger pressure Clamp force enhances the sealing performance of valve top part to give airtight and watertight padding bigger pressing force.

In conclusion the utility model has the following beneficial effects: the good seal performance of soft sealer, service life Long, the design of soft sealer structure can adequately protect the internal part of soft seal itself and valve, and then extension valve Service life.

Detailed description of the invention

Fig. 1 is the overall structure diagram of embodiment 1；

In figure, 1, valve body；2, valve seat；3, soft sealing valve seat；4, groove；5, soft sealer；51, inserting block；52, soft close Seal ontology；6, the first groove；7, the second groove；8, valve rod；9, cage spool；10, internal screw thread；11, external screw thread；12, metal block； 13, bearing；14, valve deck；15, fixing bolt；16, airtight and watertight padding；17, gland；18, clamping screw, 19, bracket.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

Embodiment 1: a kind of soft seal regulating valve, as shown in Figure 1, valve body 1 is equipped with inside soft seal regulating valve, on valve body 1 Equipped with valve seat 2, the top of valve seat 2 is equipped with soft sealing valve seat 3, and the outer wall at 3 top of soft sealing valve seat is equipped with groove 4, soft sealing valve Seat 3 and valve body 1 form confined space and wrap valve seat 2, thus make to generate sufficient contact surface between soft sealing valve seat 3 and valve seat 2, Guarantee contact surface in ratio pressure work allowable, the top of soft sealing valve seat 3 is equipped with soft sealer 5, is embedded with insertion inside groove 4 One piece, the top of inserting block 51 is equipped with soft seal ontology 52, and soft seal ontology 52 is divided to for two parts, and a part is soft seal The second groove 7 that 52 bottom of ontology is equipped with, another part are the first groove 6 being equipped at the top of soft seal ontology 52, and second is recessed Slot 7 is internally connected with cage spool 9, and the first groove 6 is internally connected with valve rod 8, and soft seal is by the adjusting and sealing of valve Function separates, and is effectively protected soft seal, extends the service life of soft seal and mating valve, 52 bottom of soft seal ontology The outer wall for not opening up the second groove 7 is equipped with the metal block 12 of protrusion, and the length of metal block 12 is tightly controlled, and protects soft seal Soft seal ontology 52 is crushed forfeiture rebound sealing effect when ontology 52 prevents valve seat 2 from operating, and is equipped with and uses at the top of soft sealing valve seat 3 In the bracket 19 for compressing soft sealing valve seat 3.

As shown in Figure 1, the inner wall of 6 bottom of the first groove is equipped with internal screw thread 10, valve rod 8 is located at bottom in the first groove 6 Outer wall is equipped with the external screw thread 11 being used cooperatively with internal screw thread 10, and the threaded connection relation between soft sealer 5 and valve rod 8 is convenient for Disassembly is convenient for the replacement of component when other component is damaged in soft seal or valve, and the outer wall at 8 top of valve rod is set There is the moment of friction to reduce moment of friction, the top of valve body 1 is equipped with valve deck 14, and valve deck 14, which is equipped with, runs through valve deck 14 and valve The fixing bolt 15 of body 1 is filled with airtight and watertight padding 16 between bearing 13 and valve deck 14, it is close that the top of airtight and watertight padding 16 is equipped with compression The gland 17 of packing material 16, the screw top of valve deck 14 are connected with the clamping screw through the top of valve deck 14, and 18.

In the embodiments of the present invention, when needing using valve, valve rod 8 is screwed in the first groove of soft seal In 6, valve deck 14 is fixed on valve body 1 by the bolt 15 that is tightened, and the inner space of sealed valve, circulation medium passes through runner Flow into valve, valve is in close state, and soft sealing valve seat 3 wraps valve seat 2 using sufficient contact surface, circulation medium by Block to cage spool 9, can not circulate in valve internal, the inserting block 51 of insertion groove 4 plays good sealing function, soft close The bracket 19 for sealing the top of valve seat 3 compresses soft sealing valve seat 3 and inserting block 51, when valve running, by pneumatic actuator or Handle control valve bar 8 is taken turns, valve rod 8 drives the valve cage in soft seal and the second groove 7 to move upwards, and the closed face of valve is gradually opened It opens, circulation medium is flowed out by valve.

The above embodiments are only the explanation to the utility model, are not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (7)

1. a kind of soft seal regulating valve, including valve body (1), the valve body (1) is internal to be equipped with valve seat (2), it is characterised in that: described The top of valve seat (2) is equipped with soft sealing valve seat (3), and the outer wall at the top of the soft sealing valve seat (3) is equipped with groove (4), described soft Seal valve seat (3) and valve body (1) form confined space and wrap valve seat (2), and the top of the soft sealing valve seat (3) is equipped with soft close Seal apparatus (5), the soft sealer (5) include the internal inserting block (51) of insertion groove (4) and push up set on inserting block (51) The soft seal ontology (52) that portion is equipped with, soft seal ontology (52) top offer the first groove (6), the soft seal ontology (52) bottom offers the second groove (7), and first groove (6) is internally connected with valve rod (8), in second groove (7) Portion is connected with cage spool (9).

2. a kind of soft seal regulating valve according to claim 1, it is characterised in that: the first groove (6) bottom it is interior Wall is equipped with internal screw thread (10), and the outer wall that the valve rod (8) is located at the first groove (6) interior bottom is equipped with to be made with internal screw thread (10) cooperation External screw thread (11).

3. a kind of soft seal regulating valve according to claim 2, it is characterised in that: soft seal ontology (52) bottom is not The outer wall for opening up the second groove (7) is equipped with the metal block (12) of protrusion, is located at the top of soft sealing valve seat in the valve body and is equipped with Bracket (19).

4. a kind of soft seal regulating valve according to claim 3, it is characterised in that: the outer wall set at the top of the valve rod (8) Equipped with bearing (13).

5. a kind of soft seal regulating valve according to claim 4, it is characterised in that: the top of the valve body (1) is equipped with valve It covers (14), the valve deck (14) is equipped with the fixing bolt (15) through valve deck (14) and valve body (1).

6. a kind of soft seal regulating valve according to claim 5, it is characterised in that: the bearing (13) and valve deck (14) it Between be filled with airtight and watertight padding (16), the top of the airtight and watertight padding (16) is equipped with gland (17).

7. a kind of soft seal regulating valve according to claim 6, it is characterised in that: the screw top of the valve deck (14) connects The clamping screw (18) being connected at the top of valve deck (14).