CN103062419A

CN103062419A - Steel forged refrigeration valve

Info

Publication number: CN103062419A
Application number: CN2013100200499A
Authority: CN
Inventors: 许炎章
Original assignee: CHANGZHOU AMG REFRIGERATION EQUIPMENT Co Ltd
Current assignee: CHANGZHOU AMG REFRIGERATION EQUIPMENT Co Ltd
Priority date: 2012-08-27
Filing date: 2013-01-18
Publication date: 2013-04-24
Also published as: CN203082226U; CN203131156U

Abstract

The invention relates to a valve, in particular to a steel forged valves including ammonia valves fluorine valves and the like which are applicable to all universal refrigerants, and mainly solves the problem that the refrigerant use for refrigeration utilizing a conventional valve is prone to leak since a bonnet mounted into a valve seat is eccentric and the conventional valve seat has multiple welding points. The steel forged refrigeration valve comprises a valve seat, a bonnet, a valve stem, a valve stem sleeve, a valve flap and a sealing cover, wherein the bonnet is in bolted connection with the valve seat, the valve stem sleeve is arranged on the bonnet, a clamp groove formed by an upper U-shaped chute and a lower U-shaped chute is arranged on the valve flap which is in clamping connection with the valve stem via the clamp groove, an elastic gasket is arranged between the valve stem and the valve flap, the valve flap and a valve body are enabled to be automatically adjusted concentrically, a valve flap gasket contacts with a sealing surface of the valve seat via a conical surface to form sealing, double O-shaped rubber sealing rings are arranged between the valve stem and the sealing cover for sealing, the valve stem sleeve is arranged on the valve bonnet, the sealing cover is arranged on the valve stem sleeve, and a bonded gasket seal is arranged between the sealing cover and the valve stem cover to improve sealing performance.

Description

The forged steel refrigeration valve

Technical field

The present invention relates to a kind of valve, especially a kind of forged steel refrigeration valve that is applicable to all general refrigeration agents and noncorrosive gases and liquid control comprises ammonia valve, fluorine valve etc.

Background technique

Valve uses in the cooling machine set such as freezing, air-conditioning, cold chain and system more and more, the steel valve that is used at present universal refrigerant mostly adopts traditional cast steel valve or welding valve, valve commonly used such as stop valve, adjustable cut-off valve, safety check, screw down nonreturn valve etc., because:

1. the reason of its structure, so that must have the slipper seal point between valve rod and valve stem casing, but be difficult to solve the leakage problem of refrigeration agent according to traditional packing seal;

2. there is off-centre unavoidably in the reason of accuracy of manufacturing, the valve gap valve base chamber of packing into, and leakage phenomenon appears in the sealing when flap and valve body decentraction can affect valve closing, and flap is subjected to frictional force to affect easy wearing and tearing, affects working life;

3. the valve seat, the valve gap that weld valve all are welded structures, and solder joint is many, and revealing often appears in difficult quality control;

4. cast-steel valve is difficult to control shrinkage porosite, shrinkage cavity, is particularly using a period of time leakage phenomenon to occur easily after corrosion.Above situation gently then causes heavy losses to production, and is heavy then jeopardize the people's lives and property safety.

Summary of the invention

The technical problem to be solved in the present invention is: a kind of forged steel refrigeration valve is provided, and the automatic centering of flap energy is not easy to wear in the using process.

The technical solution adopted for the present invention to solve the technical problems is: a kind of forged steel refrigeration valve, have valve seat, valve gap, valve rod, valve stem casing and flap, valve seat is provided with the inlet pipe body and goes out body, and valve stem casing is arranged on the valve gap, and be connected with valve gap, flap is arranged on the valve rod front end, and valve stem casing is enclosed within on the valve rod, and valve rod is threaded with valve stem casing, valve seat is connected with bolt with valve cover chamber, valve gap and valve base chamber flange gasket seal, the front end of valve rod is provided with the valve rod boss

Described flap upper-end surface is formed with U-shaped chute, be positioned at U-shaped chute bottom and be formed with width greater than the lower U-shaped chute of upper U-shaped chute width, valve rod and the flap valve rod boss by the valve rod front end snaps in to form in the lower U-shaped chute on the flap and is slidingly connected, the bottom surface of described valve rod boss forms the valve rod plush copper, be connected with on the described valve rod plush copper for the resilient pad that elastic force is provided to flap and valve rod, make between valve rod and the flap by resilient pad to remain elastic force and keep appropriateness closely to be connected;

Be provided with sealing cover between valve rod and valve stem casing, sealing cover is threaded with valve stem casing, is provided with the bonded washer for sealing between sealing cover lower end surface and valve stem casing, is provided with between valve rod and sealing cover for the seal ring that improves sealability.

Further, described seal ring is two " 0 " type rubber seal.

Further, described valve gap and valve stem casing are that whole forged steel is made.

Further, have valve body, sealing surface of seat, valve seat effluent mouth, valve seat flange, inlet pipe body on the described valve seat and go out body, and described valve seat is that whole forged steel is made.

Further, described valve seat is straight-through type valve seat or angie type valve seat, the straight-through type valve seat has the inlet pipe body, go out body, with inlet pipe body and the valve body that is connected body and all is connected, described valve body top is provided with the valve seat flange, the sealing surface of seat that is processed in the described valve body is communicated with the import of inlet pipe body, the effluent mouth that is processed in the described valve body is communicated with the outlet that goes out body, the import center line of described inlet pipe body overlaps with the center line of discharge that goes out body or is parallel, and the center line of the sealing surface of seat that is processed in the described valve body is 45 ° with the formed angle of center line of discharge that goes out body.

Further, described valve seat is the angie type valve seat, the angie type valve seat has the inlet pipe body, go out body, with inlet pipe body and the valve body that is connected body and all is connected, described valve body top is provided with the valve seat flange, the sealing surface of seat that is processed in the described valve body is communicated with the import of inlet pipe body, the effluent mouth that is processed in the described valve body is communicated with the outlet that goes out body, the central lines of the sealing surface of seat that is processed in the center line of the import of described inlet pipe body and the valve body or parallel, the center line of the sealing surface of seat that is processed in the described valve body is 90 ° with the formed angle of center line that goes out the outlet of body.

Further, be formed with the retaining boss on the valve rod of described U-shaped chute top, described retaining boss and valve rod boss are formed with the first draw-in groove between the two, described retaining boss and valve rod boss between the two the axial distance of formed the first draw-in groove greater than upper U-shaped chute formed thickness on flap, the width of described U-shaped chute is greater than the diameter of the first draw-in groove inner valve stem, the width of lower U-shaped chute is greater than the diameter of valve rod boss, when described valve rod boss is in the lower U-shaped chute, there is the gap between the valve rod plush copper on the valve rod and the lower U-shaped chute bottom surface.

The invention has the beneficial effects as follows: the invention provides a kind of forged steel refrigeration valve; has best design; compact structure; negotiability is large; effect is high, and the forged steel fabrication yield is high, without revealing; safe and reliable; two " 0 " the type rubber rings of movement parts valve rod employing and bonded washer are multi-sealed, and good seal performance is the most reliable Seal Design; flap and valve body concentricity are regulated automatically; sealing when having guaranteed valve closing and protection flap are avoided the impact of frictional force, long service life, inlet pipe be connected pipe and can directly be connected with pipeline welding; lightweight, cost is low.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the structural representation of straight-through type forged steel refrigeration valve;

Fig. 2 is the structural representation of angie type forged steel refrigeration valve;

Fig. 3 is the long splice composition between valve rod and the flap;

Fig. 4 be flap partly cut open structural representation;

Fig. 5 is the plan view of Fig. 4;

Fig. 6 is the plan view of resilient pad;

Fig. 7 is the plan view of Fig. 6;

Fig. 8 be on the valve rod with the structural representation of flap connecting end;

Fig. 9 is the structural representation of straight-through type valve seat;

Figure 10 is the structural representation of angie type valve seat;

Figure 11 be bonnet partly cut open structural representation;

Figure 12 is the work schematic representation of straight-through type forged steel refrigeration valve band bonnet;

Figure 13 is the work schematic representation of angie type forged steel refrigeration valve band bonnet.

Among the figure 1, valve seat, 1.1, valve body, 1.11, sealing surface of seat, 1.12, valve seat effluent mouth, 1.13, the valve seat flange, 2, valve gap, 3, valve rod, 3.1, the valve rod boss, 3.2, the valve rod plush copper, 3.3, the retaining boss, 4, valve stem casing, 5, flap, 5.1, lower U-shaped chute, 5.2, upper U-shaped chute, 6, the inlet pipe body, 7, go out body, 8, sealing cover, 9, two " 0 " type rubber seal, 10, resilient pad, 11, the flap pad, 12, the flap pressing plate, 13, bonded washer, 14, flange gasket, 15, bolt, 16, handwheel, 17, bonnet, 18, rubber o-ring.

Embodiment

In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic representation of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.

Forged steel refrigeration valve as shown in Figure 1 is for adopting the formed straight-through type steel refrigeration valve of straight-through type valve seat shown in Fig. 9; Forged steel refrigeration valve shown in Figure 2 is for adopting the formed angie type steel refrigeration valve of angie type valve seat shown in Figure 10, angie type steel refrigeration valve shown in Fig. 2 is identical with straight-through type steel refrigeration valve working principle among Fig. 1, difference only is to select different valve seats, therefore is divided into two kinds of multi-form valves.

Straight-through type steel refrigeration valve as shown in Figure 1, has valve seat 1, valve gap 2, valve rod 3, valve stem casing 4 and flap 5, valve seat 1 is the straight-through type valve seat, valve seat 1 is provided with inlet pipe body 6 and goes out body 7, valve stem casing 4 is arranged on the valve gap 2 and with valve gap 2 and is connected, flap 5 is arranged on valve rod 3 front ends after flap pressing plate 12 fastens flap pad 11, valve stem casing 4 is enclosed within on the valve rod 3, valve rod 3 is threaded with

valve stem casing

4,4 of valve rod 3 and valve stem casings are provided with sealing cover 8, and sealing cover 8 is threaded with valve stem casing 4, seal with bonded washer 13 between sealing cover 8 and the

valve stem casing

4,8 of valve rod 3 and sealing covers are provided with two " 0 " type rubber seal 9 sealings, 2 of valve seat 1 and valve gaps are connected with

bolt

15, and 1 of valve gap 2 and valve seat are with flange gasket 14 sealings, as shown in Figure 8, be provided with valve rod boss 3.1 on the valve rod 3, the end is provided with valve rod plush copper 3.2, and valve gap 2 and valve stem casing 4 are for adopting whole forged steel to make, formed structure, densification, without leak source, seal the most reliable.

Shown in Figure 8 such as Fig. 3 Fig. 4 Fig. 5 such as Fig. 6 Fig. 7, be provided with U-shaped chute 5.2 and lower U-shaped chute 5.1 on the flap 5, valve rod 3 is slidingly connected by the upper U-shaped chute 5.2 interior formation that the valve rod boss 3.1 on the valve rod 3 snaps in flap 5 with flap 5, and on the middle plush copper 3.2 that is added with before one group of resilient pad 10 is stuck in valve rod boss 3.1.

Be positioned on the valve rod 3 on U-shaped chute 5.2 tops and also be provided with retaining boss 3.3, the first draw-in groove and mutually clamping of flap 5 that rely on retaining boss 3.3 and valve rod boss 3.1 to form between the two, after the clamping, valve rod boss 3.1 is in the lower U-shaped chute 5.1, the width of upper U-shaped chute 5.2 is greater than the diameter of the first draw-in groove inner valve stem 3, the width of lower U-shaped chute 5.1 is greater than the diameter of valve rod boss 3.1, retaining boss 3.3 and valve rod boss 3.1 between the two the axial distance of formed the first draw-in groove greater than upper U-shaped chute 5.2 formed thickness on flap 5, after flap 5 is connected on the valve rod 3, there is the gap between valve rod plush copper 3.2 on the valve rod 3 and lower U-shaped chute 5.1 bottom surfaces, this gap is used for laying resilient pad 10

Resilient pad 10 is arranged between valve rod 3 and the flap 5 by valve rod plush copper 3.2, effectively fix by valve rod plush copper 3.2, resilient pad 10 relies on the elastic force of self to provide axial thrust to valve rod and flap 5, so that be connected tightr between valve rod and the flap 5, be difficult for mobile, resilient pad 10 is providing in the situation of end thrust, also provide certain radial frictional force to flap 5, preventing that flap 5 from radially going up arbitrarily at valve rod 3 slides, the elastic force that relies on 10 pairs of valve rods 3 of resilient pad, valve rod 3 was rotated arbitrarily, made again 3 of flap 5 and valve rods remain certain elastic force.

During work, with handwheel 16 rotary valve rods 3, valve rod 3 drives flap 5 and flap pad 11 moves down, and the conical surface of flap gasket seal 11 contacts with the sealing surface of seat 1.11 of valve seat 1 inner chamber and forms sealing, valve closing; 3 of counterrotating valve rods are with valve open, such as valve rod 3 and valve body 1.1 decentraction, because flap 5 and valve rod 3 are slidingly connected, flap 5 can be adjusted to valve body 1.1 concentric automatically, reliable sealing when guaranteeing valve closing is slidingly connected and avoids the wearing and tearing of flap gasket seal 11 and valve body 1.1.

Such as Figure 11, Figure 12 and shown in Figure 13, outer installment at valve stem casing 4 has screw thread, if valve does not need frequent switch, detachable lower handwheel 16, the bonnet 17 of screwing on, the work schematic representation of straight-through type forged steel refrigeration valve band bonnet as shown in figure 12, be threaded between bonnet 17 and the valve stem casing 4, and rubber o-ring 18 is set in bonnet 17 and between the valve stem casing, prevent random switch valve so on the one hand, even there is leakage at the valve rod place on the other hand, the rubber o-ring 18 in bonnet 17 and the bonnet 17 and valve stem casing 4 sealings, effectively prevent the too much leakage of medium, avoid losing the generation with security incident.

Figure 12 and Figure 13, because the top is provided with bonnet 17, so the valve of these two kinds of structures is also referred to as the bonnet type, among Fig. 1 and Fig. 2, because the top is provided with handwheel 16, so these two kinds of valves are also referred to as the handwheel type.

The valve seat shown in Figure 10 such as Fig. 9, have valve body 1.1, sealing surface of seat 1.11, valve seat effluent mouth 1.12, valve seat flange 1.13, inlet pipe body 6 on the valve seat 1 and go out body 7 and valve seat 1 is made for whole forged steel, whole forged steel make have no-welding-spot, without shrinkage porosite, without shrinkage cavity, compact structure is without the advantage of leak source.

As shown in Figure 9, valve seat 1 is the straight-through type valve seat, the straight-through type valve seat has inlet pipe body 6, go out body 7, with inlet pipe body 6 and the valve body 1.1 that is connected body 7 and all is connected, valve body 1.1 tops are provided with valve seat flange 1.13, the sealing surface of seat 1.11 that is processed in the valve body 1.1 is communicated with the import of inlet pipe body 6, the valve seat effluent mouth 1.12 that is processed in the valve body 1.1 is communicated with the outlet that goes out body 7, the import center line of inlet pipe body 6 overlaps with the center line of discharge that goes out body 7 or is parallel, the center line of the sealing surface of seat 1.11 that is processed in the valve body 1.1 is 45 ° with the formed angle of center line of discharge that goes out body 7, and sealing surface of seat 1.11 is cone structure.

Valve seat 1 as shown in figure 10 is the angie type valve seat, the angie type valve seat has inlet pipe body 6, go out body 7, with inlet pipe body 6 and the valve body 1.1 that is connected body 7 and all is connected, valve body 1.1 tops are provided with valve seat flange 1.13, the sealing surface of seat 1.11 that is processed in the valve body 1.1 is communicated with the import of inlet pipe body 6, the valve seat effluent mouth 1.12 that is processed in the valve body 1.1 is communicated with the outlet that goes out body 7, the central lines of the sealing surface of seat 1.11 that is processed in the center line of the import of inlet pipe body 6 and the valve body 1.1 or parallel, the center line of the sealing surface of seat 1.11 that is processed in the valve body 1.1 is 90 ° with the formed angle of center line that goes out the outlet of body 7, and sealing surface of seat 1.11 is cone structure.

Forged steel refrigeration valve of the present invention, valve gap and valve rod adopt back seal, can under working state of system, safeguard sealing cover 8, two " 0 " type circle easily, inlet pipe body 6 be connected body 7 and can directly be connected with pipeline welding, good seal performance, the concentricity of flap and valve body can be regulated automatically, the sealing when having guaranteed valve closing, the special friction that reduces flap pad and sealing surface of seat, the long service life of being connected of flap and valve rod.

Take above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on the specification, must determine its technical scope according to the claim scope.

Claims

1. forged steel refrigeration valve, it is characterized in that: have valve seat (1), valve gap (2), valve rod (3), valve stem casing (4) and flap (5), valve seat (1) is provided with inlet pipe body (6) and goes out body (7), valve stem casing (4) is arranged on the valve gap (2), and be connected with valve gap (2), flap (5) is arranged on valve rod (3) front end, valve stem casing (4) is enclosed within on the valve rod (3), valve rod (3) is threaded with valve stem casing (4), be connected with bolt (15) between valve seat (1) and valve gap (2), seal with flange gasket (14) between valve gap (2) and valve seat (1), the front end of valve rod (3) is provided with valve rod boss (3.1)

Described flap (5) upper-end surface is formed with U-shaped chute (5.2), be positioned at U-shaped chute (5.2) bottom and be formed with width greater than the lower U-shaped chute (5.1) of upper U-shaped chute (5.2) width, valve rod (3) and flap (5) the valve rod boss (3.1) by valve rod (3) front end snaps in that formation is slidingly connected in the lower U-shaped chute (5.1) on the flap (5), the bottom surface of described valve rod boss (3.1) forms valve rod plush copper (3.2), be connected with on the described valve rod plush copper (3.2) for the resilient pad (10) that elastic force is provided to flap (5) and valve rod (3), make between valve rod (3) and the flap (5) by resilient pad (10) to remain elastic force and keep appropriateness closely to be connected;

Be provided with sealing cover (8) between valve rod (3) and valve stem casing (4), sealing cover (8) is threaded with valve stem casing (4), be provided with the bonded washer (13) for sealing between sealing cover (8) lower end surface and valve stem casing (4), be provided with between valve rod (3) and sealing cover (8) for the seal ring that improves sealability.

2. forged steel refrigeration valve according to claim 1 is characterized in that: described seal ring is two " 0 " type rubber seal (9).

3. forged steel refrigeration valve according to claim 1, it is characterized in that: described valve gap (2) and valve stem casing (4) are made for whole forged steel.

4. forged steel refrigeration valve according to claim 1 is characterized in that: have valve body (1.1), sealing surface of seat (1.11), valve seat effluent mouth (1.12), valve seat flange (1.13), inlet pipe body (6) on the described valve seat (1) and go out body (7) and valve seat (1) is made for whole forged steel.

5. forged steel refrigeration valve according to claim 4, it is characterized in that: described valve seat (1) is straight-through type valve seat or angie type valve seat, the straight-through type valve seat has inlet pipe body (6), go out body (7), with inlet pipe body (6) and the valve body (1.1) that is connected body (7) and all is connected, described valve body (1.1) top is provided with valve seat flange (1.13), the sealing surface of seat (1.11) that is processed in the described valve body (1.1) is communicated with the import of inlet pipe body (6), the valve seat effluent mouth (1.12) that is processed in the described valve body (1.1) is communicated with the outlet that goes out body (7), the import center line of described inlet pipe body (6) overlaps with the center line of discharge that goes out body (7) or is parallel, and the center line of the sealing surface of seat (1.11) that is processed in the described valve body (1.1) is 45 ° with the formed angle of center line of discharge that goes out body (7).

6. forged steel refrigeration valve according to claim 4, it is characterized in that: described valve seat (1) is the angie type valve seat, the angie type valve seat has inlet pipe body (6), go out body (7), with inlet pipe body (6) and the valve body (1.1) that is connected body (7) and all is connected, described valve body (1.1) top is provided with valve seat flange (1.13), the sealing surface of seat (1.11) that is processed in the described valve body (1.1) is communicated with the import of inlet pipe body (6), the valve seat effluent mouth (1.12) that is processed in the described valve body (1.1) is communicated with the outlet that goes out body (7), the central lines of the sealing surface of seat (1.11) that is processed in the center line of the import of described inlet pipe body (6) and the valve body (1.1) or parallel, the center line of the sealing surface of seat (1.11) that is processed in the described valve body (1.1) is 90 ° with the formed angle of center line that goes out the outlet of body (7).

7. forged steel refrigeration valve according to claim 1, it is characterized in that: be formed with retaining boss (3.3) on the valve rod (3) of described U-shaped chute (5.2) top, described retaining boss (3.3) and valve rod boss (3.1) are formed with the first draw-in groove between the two, described retaining boss (3.3) and valve rod boss (3.1) the between the two axial distance of formed the first draw-in groove are gone up formed thickness greater than upper U-shaped chute (5.2) at flap (5), the width of described U-shaped chute (5.2) is greater than the diameter of the first draw-in groove inner valve stem (3), the width of lower U-shaped chute (5.1) is greater than the diameter of valve rod boss (3.1), described valve rod boss (3.1) is in lower U-shaped chute (5.1) when interior, has the gap between the valve rod plush copper (3.2) on the valve rod (3) and lower U-shaped chute (5.1) bottom surface.