CN208487257U - A kind of shut-off valve - Google Patents

Abstract

The utility model discloses a kind of shut-off valves, are used for air-conditioning system, valve rod and adapter tube including valve body, in the valve chamber of valve body, and the valve body is equipped with the interconnecting piece for flow of media；The valve body is made of aluminium, and the adapter tube is connected by adapter with interconnecting piece.In the shut-off valve, valve body is made of aluminium, by using the mode that adapter transition connects, is avoided and is directly welded between adapter tube made of valve body and red copper made of aluminium and the problem of electrochemical corrosion occur, extend the service life of shut-off valve.

Description

A kind of shut-off valve

Technical field

The utility model belongs to valve technology field, more particularly, to a kind of shut-off valve.

Background technique

Within air-conditioning systems, shut-off valve is mainly used for connecting indoor unit and outdoor unit.Fig. 1 is the structure of existing shut-off valve Schematic diagram.The shut-off valve includes valve body 1 ', valve rod 2 ', sealing ring 3 ', bonnet 4 ', upper connecting tube 5 ' and lower linking tube 6 '；The valve The internal screw thread 10 ' of the interior setting dress valve rod 2 ' of body 1 ' and the inner cavity 11 ' of dress valve rod 2；Upper connecting tube 5 ' and 6 ' one end of lower linking tube and valve body 1 ' is all cooperatively connected by welding；And 6 ' the other end of lower linking tube is connect with air-conditioner outdoor unit, the 5 ' other end of upper connecting tube and air conditioning chamber Interior machine connection, the circulation and closing of shut-off valve inner passage is controlled by rotation valve rod 2 ', i.e. control indoor unit and outdoor unit Circulation and closing.

The material of valve body 1 ' is usually brass, and upper connecting tube 5 ' and the material of lower linking tube 6 ' are usually red copper.Due to cathode copper Aluminium manufacture valve body can be used in order to avoid cost is excessively high in price continuous rise.But when valve body is manufactured using aluminum material, aluminium When directly contacting fixed with copper, under the working environment of shut-off valve, caused electrochemical corrosion reaction is more serious, influences shut-off valve Reliability

Therefore, the structure of shut-off valve how is improved, it is ensured that copper adapter tube can be reliably connected with aluminium valve body, be this field The current technical issues that need to address of technical staff.

Utility model content

The purpose of the utility model is to provide a kind of shut-off valves, avoid copper upper lower linking tube and aluminium valve body that electrochemistry occurs Corrosion, it is ensured that copper upper lower linking tube can be reliably connected with aluminium valve body.To solve the above-mentioned problems, the utility model use with Lower technical solution: a kind of shut-off valve is used for air-conditioning system, including valve body, is set to the intracorporal valve rod of valve, adapter tube, on the valve body Equipped with interconnecting piece；The valve body is made of aluminium, and the adapter tube is made of copper product, and the adapter tube passes through adapter and the company Socket part is connected.

Further, the adapter is matched with the first end matched with the interconnecting piece and with the adapter tube Second end is equipped with sealing structure between the first end and the interconnecting piece.

Further, the sealing structure includes the sealing set on the annular groove of the adapter outer wall and set on the annular groove Circle.

Further, the adapter outer wall forms boss, and the interconnecting piece end has an inclined plane part, the inclined plane part with The boss abuts against.

Further, the adapter is made of stainless steel material.

Further, the adapter is fixedly connected with the interconnecting piece by being threadedly engaged.

Further, the second end of the adapter tube and the adapter is welded and fixed.

Shut-off valve provided by the utility model, valve body are made of aluminium, by using adapter transition connect mode, It avoids and is directly welded between valve body made of aluminium and copper adapter tube and the problem of electrochemical corrosion occur, it is ensured that copper adapter tube energy It is enough to be reliably connected with aluminium valve body.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of existing shut-off valve.

Fig. 2 is the structural schematic diagram of shut-off valve provided by the utility model.

Fig. 3 is the enlarged drawing in Fig. 2 at B.

Fig. 4 is the side view of shut-off valve provided by the utility model.

Wherein, the one-to-one relationship in Fig. 1 between component names and appended drawing reference is as follows:

Valve body 1 ', valve rod 2 ', sealing ring 3 ', bonnet 4 ', upper connecting tube 5 ', lower linking tube 6 ', screw thread 10 ', inner cavity 11 '；

Wherein, one-to-one relationship of the Fig. 2 into Fig. 4 between component names and appended drawing reference is as follows:

Valve body 1, adapter tube 2, interconnecting piece 11, entrance interconnecting piece 11a, outlet connections 11b, inclined-plane 111, adapter 3, first End 31, second end 32, annular groove 41, sealing ring 42, valve rod 5 fill connector 6, and valve inside 7 fills cap 8.

Specific embodiment

In order to make those skilled in the art better understand the utility model, with reference to the accompanying drawing and it is embodied The utility model is described in further detail for mode.

It is succinct with description for ease of understanding, illustrate together below in conjunction with shut-off valve, beneficial effect part is not repeated to discuss.

Fig. 2-4 is please referred to, the utility model provides a kind of shut-off valve, as shown in Fig. 2, shut-off valve includes made of aluminium Valve body 1, the valve rod 5 in the valve chamber of valve body, the spool and adapter tube 2 matched with valve rod, the valve body 1 are equipped with for medium The interconnecting piece 11 of circulation, the interconnecting piece 11 include entrance interconnecting piece 11a and outlet connections 11b, and entrance interconnecting piece 11a is by connecing Pipe is connected to outdoor unit, and outlet connections 11b is connected to by adapter tube with indoor unit, therefore, when entrance interconnecting piece 11a and outlet connect When socket part 11b is connected, refrigerant can enter the room machine from outdoor unit；Valve interior wall has internal screw thread, has external screw thread on valve rod, Therefore valve rod 5 may make to move up and down in valve chamber by rotation valve rod, to realize entrance interconnecting piece 11a and outlet connection The connection or blocking of portion 11b.

Specifically, the adapter tube 2 is made of copper product, and adapter tube 2 is connected by adapter 3 with the interconnecting piece 11；? That is adapter tube 2 is connected by adapter 3 with entrance interconnecting piece 11a and outlet connections 11b respectively；The adapter 3 is served as reasons Connector made of stainless steel material.

It is worth noting that, relative to the mode that aluminum valve body 1 and copper adapter tube 2 directly weld, it is provided in this embodiment Shut-off valve can reduce as far as possible the seriousness of weld electrochemical corrosion, and non-fully avoid weld that electrochemical corrosion occurs, In addition, adapter 3 is not limited to the form of stainless steel material, it is theoretically slighter with copper 2 electrochemical corrosion phenomenon of adapter tube Material is all feasible.

It directly welds between adapter tube 2 made of valve body 1 and copper made of aluminium so set, avoiding and electrochemistry corruption occurs The problem of erosion, guarantees on the basis of cost reduction, to extend the service life of shut-off valve.

Specifically, as shown in Fig. 2, the adapter 3 have the first end 31 that is matched with interconnecting piece 11 and with 2 phase of adapter tube The second end 32 of cooperation, when assembly, first end 31 is penetrated to interconnecting piece 11, and adapter tube 2 is penetrated to second end 32, and passes through weldering It connects and is connected with second end 32.

Specifically, 3 first end of adapter, 31 outer surface is provided with external thread structure, interconnecting piece 11 and 3 first end of adapter The 31 external screw thread place of matching is provided with internal thread structure, and adapter 3 is connected through a screw thread with valve body 1, and/or, adapter 3 First end 31 and interconnecting piece weld, so that adapter 3 is fixedly connected with valve body 1.

Further, sealing structure is equipped between the first end 31 and interconnecting piece 11, which includes annular groove 41 With sealing ring 42, the annular groove 41 is set as adapter 3 and penetrates to the outer wall radial contraction of interconnecting piece and formed, described close Seal 42 is O-shaped rubber ring, positioned at above-mentioned annular groove 41；So set, 3 first end 31 of adapter is made to be inserted into interconnecting piece 11 Afterwards, sealing ring 42 and 11 inner wall of interconnecting piece directly form soft seal, prevent the two junction from the risk of coolant leakage occur.

In addition, as shown in figure 3, there are boss 21, usual feelings on the outer wall of corresponding 32 position of second end of above-mentioned adapter 3 Under condition, boss 21 is the protrusion that the annular extended to form is directed out by 3 end outer wall of adapter, and boss 21 and adapter are one Forming structure；Further, there is the inclined plane part 111 matched with the boss 21, the inclined-plane on the outer end of interconnecting piece 11 Portion 111 is to be arranged by interior to outer incline, and inclined plane part is cone structure；Shut-off valve after the assembly is completed, the part table of the boss 21 Face and 111 gluing, sealing of inclined plane part, that is to say, that the inclined-plane 111 is the sealing surface of boss and interconnecting piece.

So set, working as shut-off valve after the assembly is completed, the soft seal between 11 inner wall of sealing ring 42 and interconnecting piece, which is realized, to be cut The only once sealing of valve；The secondary seal of shut-off valve is realized in sealing between inclined-plane 111 and boss 21, effectively reduces shut-off valve Junction there is a possibility that coolant leakage, sealing performance is more reliable；And by secondary seal, external environment pair is reduced The influence of sealing ring improves the service life of shut-off valve.

In addition, we are provided with filling on the valve body as shown in figure 4, filling refrigerant into air conditioner for convenience Connector 6, the filling connector 6 are fixed together with valve body by welding；It is provided with valve inside 7 in filling connector 6, fills connector 6 Filling cap 8 is bolted on outer end can be filled when needing to fill refrigerant into air conditioner by valve inside 7.

A kind of shut-off valve provided by the utility model and its adapter tube connecting tubes are described in detail above.This It applies specific case in text to be expounded the principles of the present invention and embodiment, the explanation of above embodiments is It is used to help understand the method and its core concept of the utility model.It should be pointed out that for the ordinary skill people of the art For member, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, this A little improvement and modification are also fallen into the protection scope of the utility model claims.

Claims (7)

1. a kind of shut-off valve, it to be used for air-conditioning system, including valve body (1), is set to the intracorporal valve rod of valve (5), adapter tube (2), the valve Body (1) is equipped with interconnecting piece (11)；It is characterized by: the valve body (1) is made of aluminium, the adapter tube (2) is by copper product system At the adapter tube (2) is connected by adapter (3) with the interconnecting piece (11).

2. shut-off valve according to claim 1, it is characterised in that: the adapter (3) has and the interconnecting piece (11) The first end (31) matched and the second end (32) matched with the adapter tube (2), the first end (31) and the connection Sealing structure is equipped between portion (11).

3. shut-off valve according to claim 2, it is characterised in that: the sealing structure includes being set to the adapter (3) The annular groove (41) of outer wall and the sealing ring (42) for being set to the annular groove (41).

4. shut-off valve according to claim 1, it is characterised in that: adapter (3) outer wall forms boss (21), described Interconnecting piece (11) end has inclined plane part (111), and the inclined plane part (111) abuts against with the boss (21).

5. shut-off valve according to claim 1, it is characterised in that: the adapter (3) is made of stainless steel material.

6. shut-off valve according to claim 1, it is characterised in that: the adapter (3) passes through with the interconnecting piece (11) It is threadedly engaged and is fixedly connected.

7. shut-off valve according to claim 2, it is characterised in that: the second end of adapter tube (2) and the adapter (3) (32) it is welded and fixed.