CN209041584U - Multi-level Fluorine-lined bellows regulating valve - Google Patents

Abstract

The utility model discloses multi-level Fluorine-lined bellows regulating valves, including Fluorine-lined valve body and PTFE bellows, the inside center of the Fluorine-lined valve body is mounted with Fluorine-lined valve rod, and the bottom end of Fluorine-lined valve rod is fixed with valve seat, it is punch forming between the Fluorine-lined valve rod and valve seat, Fluorine-lined valve deck is provided with above the PTFE bellows, the interior surface of the Fluorine-lined valve rod is fitted with filler, the positioned inside of the Fluorine-lined valve deck has fixing bolt, the inside center of the bracket is mounted with push rod, fixed link is connected with above the push rod, and push rod is externally-arranged with screw thread snap ring, the outer surface of the bracket is provided with mounting hole, and thin-film heads are installed above bracket, the thin-film heads are fixedly arranged above ring flange, and the top end surface of ring flange is fixed with screw.The multi-level Fluorine-lined bellows regulating valve valve body structure is compact, and droop loss is small, and flow is big, adjustable extent is wide, can thoroughly eliminate a possibility that processing medium is leaked out from stem movement gap.

Description

Multi-level Fluorine-lined bellows regulating valve

Technical field

The utility model relates to regulating valve technical field, specially multi-level Fluorine-lined bellows regulating valve.

Background technique

Regulating valve also known as control valve, in industrial automation process control field, by receiving regulation unit output Control signal, go the final control for changing the technological parameters such as rate-of flow, pressure, temperature and liquid level first by power operation Part, in the automatic control of modern plant, regulating valve is played a very important role, and the production of these factories depends on flowing Medium correctly distribute and control, the either simple container charging of these controls either exchange of energy, the reduction of pressure, Certain final control elements are required to go to complete.

However, existing regulating valve processing medium is easy to leak out from stem movement gap location, it is difficult to there is severe toxicity, It is difficult in the automatic control program of the rare special media such as strong corrosive or radioactivity, filler is easy aging, and the temperature difference is sensitive Difference, and structure is not compact enough, power output is smaller, more troublesome, for this purpose, it is proposed that a kind of valve body structure is compact, droop loss Small, flow is big, adjustable extent is wide, can thoroughly eliminate the multi-level of a possibility that processing medium is leaked out from stem movement gap Fluorine-lined bellows regulating valve.

Utility model content

The purpose of this utility model is to provide multi-level Fluorine-lined bellows regulating valves, to solve to mention in above-mentioned background technique The regulating valve processing medium that has is easy to leak out from stem movement gap location, it is difficult to there is severe toxicity, strong corrosive or It is difficult in the automatic control program of the rare special media such as radioactivity, filler is easy aging, and the temperature difference is sensitive poor, and structure is not Enough compact, power output is smaller, more troublesome problem.

To achieve the above object, the utility model provides the following technical solutions: multi-level Fluorine-lined bellows regulating valve, including Fluorine-lined valve body and PTFE bellows, the inside center of the Fluorine-lined valve body is mounted with Fluorine-lined valve rod, and the bottom end of Fluorine-lined valve rod is solid Surely there is valve seat, be punch forming between the Fluorine-lined valve rod and valve seat, and the outer surface of valve seat is fitted with fluoroplastic layer, it is described Fluorine-lined valve deck is provided with above PTFE bellows, and PTFE bellows is located at the outer surface of Fluorine-lined valve rod, the fluorine-lining valve The interior surface of bar is fitted with filler, and the positioned inside of the Fluorine-lined valve deck has fixing bolt, and the top connection of Fluorine-lined valve deck There is bracket, the inside center of the bracket is mounted with push rod, and link block is fixed on the left of push rod, connects above the push rod It is connected to fixed link, and push rod is externally-arranged with screw thread snap ring, the outer surface of the bracket is provided with mounting hole, and bracket Top is equipped with thin-film heads, and the thin-film heads are fixedly arranged above ring flange, and the top end surface of ring flange is fixed with screw.

Preferably, the vertical centerline between the Fluorine-lined valve rod and valve seat coincides, and the surface area of valve seat is greater than fluorine The surface area of plastic layer, and the outer surface of valve seat and the interior surface of fluoroplastic layer fit closely.

It preferably, is in coated structure between the PTFE bellows and Fluorine-lined valve rod, and Fluorine-lined valve rod and Fluorine-lined valve deck Between to be slidably connected.

Preferably, the bracket is fixedly connected by fixing bolt with Fluorine-lined valve deck, and is between bracket and screw thread snap ring It is fixedly connected.

It preferably, is rotation connection between the push rod and Fluorine-lined valve rod, and push rod passes through link block and screw thread snap ring spiral shell Line connection, and push rod constitutes rotation and lifting structure by the cooperation between link block and screw thread snap ring.

Preferably, it is punch forming between the thin-film heads and ring flange, and passes through ring flange and screw between thin-film heads Between cooperation flanged joint.

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

1, the utility model is by the setting of PTFE bellows, Fluorine-lined valve rod and Fluorine-lined valve deck, under normal circumstances this valve with By means of sylphon seal, medium will not with valve stem contacts, when occur having particulate matter in medium, super service life use causes bellows old In the case of the extreme case of change causes bellows damaged or murther medium, Fluorine-lined valve rod and Fluorine-lined valve deck can effectively resist Jie The corrosion of matter, this valve still can be used normally, and not will lead to medium leakage, have double insurance effect, virtually extend One times of service life or more of valve has high cost performance；

2, the utility model is by the setting of fluoroplastic layer, Fluorine-lined valve body, Fluorine-lined valve rod and Fluorine-lined valve deck, make this valve with Media contact makes, and can bear any corrosive media in addition to molten alkali metal and element fluorine, enhance its high temperature resistant, it is corrosion-resistant, Abrasion resistance properties expand use scope；

3, the utility model passes through link block, screw thread snap ring, fixed link, push rod, Fluorine-lined valve body, Fluorine-lined valve rod and fluorine-lining valve The setting of lid drives fixed link by the corresponding pneumatically or electrically device of external connection, makes fixed link that push rod be driven to be revolved Turn, by the threaded connection between link block and screw thread snap ring, according to the direction of rotation, while rotating push rod can downwards or Top is mobile, thus the adjusting for making push rod that Fluorine-lined valve rod be driven to carry out position on vertical direction, it is vertical to be carried out by Fluorine-lined valve rod The adjusting of direction position controls the circulation of this valve, and old between opening and closing element to have fluoroplastics, the coefficient of friction of fluoroplastics is very small, therefore This valve opening and closing thrust is very light, and adjusting, the opening and closing of valve can be realized using lesser executing agency, operates conveniently, solves Need to consume the trouble of more active force when valve is adjusted.

Detailed description of the invention

Fig. 1 is the utility model schematic view of the front view；

Fig. 2 is the utility model thin-film heads overlooking structure diagram；

Fig. 3 is enlarged structure schematic diagram at the utility model A.

In figure: 1, Fluorine-lined valve body；2, Fluorine-lined valve rod；3, valve seat；4, fluoroplastic layer；5, PTFE bellows；6, filler；7, it serves as a contrast Fluorine valve deck；8, fixing bolt；9, bracket；10, push rod；11, link block；12, fixed link；13, screw thread snap ring；14, mounting hole； 15, thin-film heads；16, ring flange；17, screw.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: multi-level Fluorine-lined bellows regulating valve, including lining Fluorine valve body 1 and PTFE bellows 5, the inside center of Fluorine-lined valve body 1 is mounted with Fluorine-lined valve rod 2, and the bottom end of Fluorine-lined valve rod 2 is fixed There is valve seat 3, is punch forming between Fluorine-lined valve rod 2 and valve seat 3, and the outer surface of valve seat 3 is fitted with fluoroplastic layer 4, Fluorine-lined Vertical centerline between valve rod 2 and valve seat 3 coincides, and the surface area of valve seat 3 is greater than the surface area of fluoroplastic layer 4, and The outer surface of valve seat 3 and the interior surface of fluoroplastic layer 4 fit closely, and the coefficient of friction of fluoroplastic layer 4 is very small, therefore this Valve is opened and closed that thrust is very light, and adjusting, the opening and closing of valve can be realized using lesser executing agency, operates conveniently, solves pair Needing to consume the trouble of more active force when valve is adjusted, the top of PTFE bellows 5 is provided with Fluorine-lined valve deck 7, and PTFE bellows 5 is located at the outer surface of Fluorine-lined valve rod 2, is in coated structure between PTFE bellows 5 and Fluorine-lined valve rod 2, and To be slidably connected between Fluorine-lined valve rod 2 and Fluorine-lined valve deck 7, PTFE bellows 5 provides protection to Fluorine-lined valve rod 2, reduces Fluorine-lined The probability that valve rod 2 damages, at the same when particulate matter occur having in medium, the super service life uses the pole for leading to 5 aging of PTFE bellows Situation is held, in the case of causing PTFE bellows 5 damaged or murther medium, Fluorine-lined valve rod 2 and Fluorine-lined valve deck 7 can be resisted effectively This valve can be used normally still in the corrosion of medium, and the interior surface of Fluorine-lined valve rod 2 is fitted with filler 6, Fluorine-lined valve deck 7 Positioned inside has fixing bolt 8, and the top of Fluorine-lined valve deck 7 is connected with bracket 9；

The inside center of bracket 9 is mounted with push rod 10, and the left side of push rod 10 is fixed with link block 11, the top of push rod 10 It is connected with fixed link 12, and push rod 10 is externally-arranged with screw thread snap ring 13, bracket 9 is solid by fixing bolt 8 and Fluorine-lined valve deck 7 Fixed connection, and to be fixedly connected between bracket 9 and screw thread snap ring 13, fixing bolt 8 improves between Fluorine-lined valve deck 7 and bracket 9 The fastness of connection is rotation connection between push rod 10 and Fluorine-lined valve rod 2, and push away to improve the fastness of this valve entirety Bar 10 is threadedly coupled by link block 11 with screw thread snap ring 13, and push rod 10 passes through between link block 11 and screw thread snap ring 13 Cooperation constitutes rotation and lifting structure, drives fixed link 12 by the corresponding pneumatically or electrically device of external connection, makes fixed link 12 drive push rods 10 are rotated, and are made by the threaded connection between link block 11 and screw thread snap ring 13 according to the direction of rotation Push rod 10 can downwards while rotation or top is mobile, to make push rod 10 that Fluorine-lined valve rod 2 be driven to carry out position on vertical direction Adjusting, pass through Fluorine-lined valve rod 2 carry out vertical position adjusting control this valve circulation, bracket 9 outer surface setting There is mounting hole 14, and the top of bracket 9 is equipped with thin-film heads 15, thin-film heads 15 are fixedly arranged above ring flange 16, and ring flange 16 top end surface is fixed with screw 17, is punch forming between thin-film heads 15 and ring flange 16, and pass through between thin-film heads 15 Cooperation flanged joint between ring flange 16 and screw 17, the inside adapted multiple springs formula diaphragm actuator of thin-film heads 15, It is compact-sized, High power output, and by the cooperation flanged joint between ring flange 16 and screw 17 between thin-film heads 15, flange connects Connecing has the characteristics that convenient disassembly, intensity height, good seal performance, simplifies the installation difficulty of this valve.

Working principle: suitable position is installed to by Fluorine-lined valve body 1 first for this kind of regulating valve, then this valve is equipped with The driving device of the types such as corresponding pneumatic actuator, electric operator drives fixed link by corresponding driving device 12, make fixed link 12 that push rod 10 be driven to be rotated, by the threaded connection between link block 11 and screw thread snap ring 13, according to turning Dynamic direction, can downwards while rotating push rod 10 or top is mobile, to make push rod 10 that Fluorine-lined valve rod 2 be driven to carry out vertically The adjusting of position on direction controls the circulation of this valve by the adjusting that Fluorine-lined valve rod 2 carries out vertical position, as needed will Fluorine-lined valve rod 2 is adjusted to suitable position；

PTFE bellows 5 provides protection to Fluorine-lined valve rod 2, reduces the probability of the damage of Fluorine-lined valve rod 2, while working as and being situated between There are particulate matter, super service life in matter using the extreme case for leading to 5 aging of PTFE bellows, cause PTFE bellows 5 damaged, or In the case of murther medium, Fluorine-lined valve rod 2 and Fluorine-lined valve deck 7 can effectively resist the corrosion of medium, make this valve still can be normal It uses, completes the use process of entire regulating valve like this.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (6)

1. multi-level Fluorine-lined bellows regulating valve, including Fluorine-lined valve body (1) and PTFE bellows (5), it is characterised in that: the lining The inside center of fluorine valve body (1) is mounted with Fluorine-lined valve rod (2), and the bottom end of Fluorine-lined valve rod (2) is fixed with valve seat (3), the lining It is punch forming between fluorine valve rod (2) and valve seat (3), and the outer surface of valve seat (3) is fitted with fluoroplastic layer (4), it is described It is provided with above PTFE bellows (5) Fluorine-lined valve deck (7), and PTFE bellows (5) is located at the external table of Fluorine-lined valve rod (2) The interior surface in face, the Fluorine-lined valve rod (2) is fitted with filler (6), and the positioned inside of the Fluorine-lined valve deck (7) has fixing bolt (8), it and above Fluorine-lined valve deck (7) is connected with bracket (9), the inside center of the bracket (9) is mounted with push rod (10), and pushes away It is fixed on the left of bar (10) link block (11), is connected with fixed link (12) above the push rod (10), and push rod (10) It is externally-arranged with screw thread snap ring (13), the outer surface of the bracket (9) is provided with mounting hole (14), and the top of bracket (9) It is equipped with thin-film heads (15), the thin-film heads (15) are fixedly arranged above ring flange (16), and the top end surface of ring flange (16) It is fixed with screw (17).

2. multi-level Fluorine-lined bellows regulating valve according to claim 1, it is characterised in that: the Fluorine-lined valve rod (2) with Vertical centerline between valve seat (3) coincides, and the surface area of valve seat (3) is greater than the surface area of fluoroplastic layer (4), and valve The interior surface of the outer surface and fluoroplastic layer (4) of seat (3) fits closely.

3. multi-level Fluorine-lined bellows regulating valve according to claim 1, it is characterised in that: the PTFE bellows (5) It is in coated structure between Fluorine-lined valve rod (2), and is to be slidably connected between Fluorine-lined valve rod (2) and Fluorine-lined valve deck (7).

4. multi-level Fluorine-lined bellows regulating valve according to claim 1, it is characterised in that: the bracket (9) passes through solid Determine bolt (8) to be fixedly connected with Fluorine-lined valve deck (7), and is to be fixedly connected between bracket (9) and screw thread snap ring (13).

5. multi-level Fluorine-lined bellows regulating valve according to claim 1, it is characterised in that: the push rod (10) and Fluorine-lined It is rotation connection between valve rod (2), and push rod (10) is threadedly coupled by link block (11) with screw thread snap ring (13), and push rod (10) rotation and lifting structure is constituted by the cooperation between link block (11) and screw thread snap ring (13).

6. multi-level Fluorine-lined bellows regulating valve according to claim 1, it is characterised in that: the thin-film heads (15) and method It is punch forming between blue disk (16), and passes through the cooperation flange between ring flange (16) and screw (17) between thin-film heads (15) Connection.