CN207945817U - A kind of electric heater - Google Patents

Abstract

The utility model provides a kind of electric heater, including liner, liner is equipped with sewage draining exit, blowdown valve module is equipped at sewage draining exit, blowdown valve module includes adapter and valve body, and adapter is fixedly connected with sewage draining exit, valve body connect with adapter and can be moved relative to adapter, adapter is equipped with dewatering orifice, and valve body is equipped with mudhole, and dewatering orifice can be connected to or misplace with mudhole closure.The utility model may be used on household appliance technical field, the mudhole on valve body is set to be connected to or misplace with the dewatering orifice on adapter closure by valve body movement, it can easily realize the opening and closing of blowdown valve module, switch blowdown maintenance or the normal heating function of liner, it is simple to operate, the problem of solving blowdown plug dismounting difficulty, be not easy to liner blowdown maintenance, and the problem of avoiding the liner poor sealing caused by being dismounted for multiple times blowdown plug, causing leak.

Description

A kind of electric heater

Technical field

The utility model is related to household appliance technical field more particularly to a kind of electric heaters.

Background technology

Dirt, the impurity in liner are discharged generally by dismantling blowdown plug, by flow for existing electric heater, then from Water inlet tube of intaking rinses liner, realizes liner maintenance.

Disadvantage：

1, the dismounting of blowdown plug is difficult, and user carries out blowdown maintenance inconvenience, and heating pipe surface attached water dirt is be easy to cause Dry combustion method damages；

2, blowdown plug being dismounted for multiple times be easy to cause liner poor sealing, causes electric heater leak.

Utility model content

The utility model, which provides a kind of can be moved by valve body, makes discharging water on mudhole and adapter on valve body Hole is connected to or dislocation is closed, you can easily realize that blowdown valve module opens or closes, keep liner blowdown easy maintenance quick and It is easy to operate, avoid the dismounting of blowdown plug difficult and seepy question.

In order to solve the above technical problems, the utility model adopts the following technical solution：

The embodiments of the present invention provide a kind of electric heater, and the electric heater includes liner, and liner is equipped with Sewage draining exit, is equipped with blowdown valve module at the sewage draining exit, and the blowdown valve module includes adapter and valve body, the adapter with The sewage draining exit is fixedly connected, and the valve body connect with the adapter and can be moved relative to the adapter, the switching Head is equipped with dewatering orifice, and the valve body is equipped with mudhole, and the dewatering orifice can be connected to or misplace with the mudhole closure.

The electric heater of the utility model, is equipped with blowdown valve module at the sewage draining exit of liner, and blowdown valve module includes turning Connector and valve body, wherein adapter are fixed at sewage draining exit, and adapter is movably coupled with valve body, when adapter moves When being connected to dewatering orifice thereon with the mudhole on valve body, blowdown valve module is in the open state, and water flowing can be in liner Dirt, impurity carry out clean and be discharged by mudhole, realize liner blowdown maintenance function；When adapter moves to thereon When dewatering orifice is closed with the mudhole dislocation on valve body, blowdown valve module is closed, and water can not be flowed out from mudhole, is protected Liner excellent sealing is demonstrate,proved, electric heater can normal use heating function.

By the way that blowdown valve module is arranged, mudhole can be opened to being carried out in liner without dismantling blowdown valve module by realizing Cleaning, solves that existing electric heater blowdown maintenance is inconvenient, poor sealing after blowdown plug being dismounted for multiple times, easy leak are asked Topic.

Optionally, the lower face of the adapter is equipped with dewatering orifice, and the upper surface of the valve body is equipped with mudhole, institute Valve body is stated to be rotatablely connected with the adapter.

The lower face of adapter is equipped with dewatering orifice, and the upper surface of valve body is equipped with mudhole, and rotation valve body makes adapter On dewatering orifice it is opposite with the mudhole on valve body and when being connected to, blowdown valve module is in the open state, you can to liner into Row blowdown is maintained.When need not use liner blowdown maintenance function, rotation valve body makes on mudhole and adapter on valve body Dewatering orifice dislocation is closed, and blowdown valve module is made to close, you can ensures that liner excellent sealing, electric heater can normal use heating work( Energy.

The technical solution of the present embodiment, valve body are rotatablely connected with adapter, make the mudhole on valve body by rotating valve body Be connected to or misplace with the dewatering orifice on adapter closure, you can the state that opens or closes for easily switching blowdown valve module uses The blowdown maintenance of liner and normal heating function.When user needs to carry out the blowdown maintenance of liner, valve body is rotated by blowdown valve group Part open, the mudhole on valve body is connected to the dewatering orifice on adapter at this time, water flowing can by liner dirt, impurity from Mudhole is discharged；After blowdown is maintained, make dewatering orifice on mudhole and adapter on valve body by rotating backward valve body Dislocation is closed, you can closes blowdown valve module, at this point, mudhole seals, liner keeps sealing state, electric heater that can normally make Use heating function.The technical solution keeps liner blowdown easy maintenance quick and easy to operate, and electric heater is carried out convenient for user The switching of blowdown maintenance function and heated sealed function not only solves blowdown plug dismounting difficulty in existing electric heater, no The problem of being maintained convenient for liner blowdown, causing heating pipe surface sediment incrustation that dry combustion method is caused to damage, while also avoiding repeatedly tearing open The problem of dress blowdown plug be easy to cause liner poor sealing, causes electric heater leak.

Optionally, the blowdown valve module further includes active joint, and described active joint one end is sleeved on outside the valve body simultaneously It is rotatablely connected with the valve body, the other end is fixed with the adapter.

Blowdown valve module further includes active joint, and one end of active joint is sleeved on outside valve body so that valve body valve body can be relative to Active joint rotates, and the other end of active joint is fixedly connected with adapter, to realize that valve body is rotatablely connected with adapter.

Optionally, the valve body is connected by clip with the active joint, is set on the madial wall of the active joint There are boss, the valve body to be equipped with card slot, be contained in the card slot on the inside of the clip, the outside-supporting of the clip exists On the boss；Or

The madial wall of the active joint is equipped with boss, and the lateral wall of the valve body is equipped with flange, the flange branch Support is on the boss.

Valve body is connected by clip with active joint, specifically, valve body peripheral surface is equipped with card slot, the height of card slot Essentially identical with the thickness size of clip, the width of card slot is less than the width of clip, when by hoop sleeve in card slot, clip it is interior Side is contained in card slot, and outside protrudes from card slot；The madial wall of active joint is equipped with boss, may be supported on the outside of clip On boss, active joint is made mutually to be fixed in the axial direction with valve body, but active joint can be relative to valve body in circumferential direction Upper rotation, to realize the rotation connection between valve body and active joint.

Alternatively, valve body can directly be connect with active joint, specifically, the madial wall of active joint is equipped with boss, The lateral wall of valve body be equipped with flange, when active joint is sleeved on outside valve body, the flange support of valve body on the boss of active joint, Realize that active joint is mutually fixed in the axial direction with valve body, but active joint can in circumferential direction turn relative to valve body It is dynamic.

Optionally, gasket is equipped between the valve body and the adapter, the gasket is mutually solid with the adapter Fixed, the gasket is equipped with intercommunicating pore and sealing surface, and the dewatering orifice can be connected to by the intercommunicating pore with the mudhole, institute The mudhole can be sealed by stating sealing surface；

Alternatively, being equipped with gasket between the valve body and the adapter, the gasket is mutually fixed with the valve body, institute It states gasket and is equipped with intercommunicating pore and sealing surface, the dewatering orifice can be connected to by the intercommunicating pore with the mudhole, described close Cover can seal the dewatering orifice.

Gasket is equipped between valve body and adapter, gasket can play the connection improved between valve body and adapter and seal Property effect, prevent the connecting portion of valve body and adapter occur leak.In addition, gasket is equipped with intercommunicating pore and sealing Face, when valve body turn to the mudhole on valve body it is corresponding with the dewatering orifice on adapter when, mudhole can pass through with dewatering orifice Intercommunicating pore is connected to, and blowdown valve module is opened at this time；When valve body turns to the mistake of the dewatering orifice on mudhole and adapter on valve body When position, sealing surface can close mudhole or dewatering orifice sealing, so that mudhole is not connected to dewatering orifice, blowdown valve module closes at this time It closes.

Specifically, when gasket and adapter are mutually fixed, putting on the intercommunicating pore and adapter on gasket at this time Water hole is connected and relative position is kept to fix, when rotation valve body keeps the position of mudhole, intercommunicating pore, dewatering orifice corresponding, row Dirty hole is connected to intercommunicating pore, dewatering orifice, i.e. blowdown valve module is in the open state, and liner blowdown maintenance function can be used；Reversely Rotation valve body makes mudhole on valve body misplace with intercommunicating pore, dewatering orifice, and when being overlapped with sealing surface, sealing surface is close by mudhole Envelope, i.e. blowdown valve module are closed, and ensure liner good seal, can normal use heating function.

When gasket is mutually fixed with valve body, the intercommunicating pore on gasket is connected and protects with the mudhole on valve body at this time It holds relative position to fix, rotation valve body is when keeping the position of mudhole, intercommunicating pore, dewatering orifice corresponding, mudhole, intercommunicating pore and puts Water hole is connected to, i.e. blowdown valve module is in the open state, and liner blowdown maintenance function can be used；Rotating backward valve body makes dewatering orifice When misplacing with mudhole, dewatering orifice, and being overlapped with sealing surface, sealing surface seals dewatering orifice, i.e., blowdown valve module, which is in, closes State ensures liner good seal, can normal use heating function.

Optionally, when the gasket is mutually fixed with the adapter, one in the adapter and the gasket It is equipped with positioning column, another is equipped with location hole, and the positioning column coordinates with the location hole；

Alternatively, when the gasket is mutually fixed with the valve body, one in the valve body and the gasket is equipped with Positioning column, another is equipped with location hole, and the positioning column coordinates with the location hole.

When gasket and adapter are mutually fixed, one in adapter and gasket equipped with positioning column, on another Equipped with location hole, gasket is set to realize circumferentially positioned fixation with adapter by the cooperation of positioning column and location hole, so that Dewatering orifice contraposition on intercommunicating pore and adapter on gasket is accurate and relative position is kept to fix, and is constantly in conducting shape State prevents gasket in valve body rotation process from transfer occurs relative to adapter, influences the intercommunicating pore on gasket and sealing surface Conducting and sealing performance.

When gasket and the valve body are mutually fixed, one in valve body and gasket equipped with positioning column, on another Equipped with location hole, gasket is set to realize circumferentially positioned fixation with valve body by the cooperation of positioning column and the location hole, and then make It obtains the contraposition of the mudhole on intercommunicating pore and valve body on gasket accurately and relative position is kept to fix, and be constantly in conducting shape State prevents gasket in valve body rotation process from cannot influence the intercommunicating pore on gasket and sealing relative to the timely transfer of valve body The conducting in face and sealing performance.

Optionally, when the gasket is mutually fixed with the adapter, the adapter is equipped with two positioning columns, described in two Positioning column is inserted into the intercommunicating pore and is abutted against with the intercommunicating pore；

Alternatively, when the gasket is mutually fixed with the valve body, the valve body is equipped with two positioning columns, two positioning columns It is inserted into the intercommunicating pore and is abutted against with the intercommunicating pore.

When gasket and adapter are mutually fixed, two positioning columns on adapter be inserted into the intercommunicating pore on gasket and with Connection bore edges abut against, and on the one hand realize being relatively fixed for adapter and gasket, on the other hand two positioning columns can be to close Intercommunicating pore on packing is supported, and frictional force causes connection bore deformation when preventing valve body from being rotated relative to gasket, influences to connect The conduction property of through-hole；Alternatively, when gasket is mutually fixed with valve body, two positioning columns on valve body are inserted into the connection on gasket It is abutted against in hole and with bore edges are connected to, on the one hand realizes being relatively fixed for valve body and gasket, on the other hand two positioning columns Intercommunicating pore on gasket can be supported, frictional force causes when preventing valve body and gasket from being rotated together relative to adapter It is connected to bore deformation, influences the conduction property of intercommunicating pore.

Optionally, one in the adapter and the valve body is equipped with rotary spacing portion, another is equipped with rotation Spacing auxiliary section, the rotary spacing auxiliary section have first limit mating surface and second limit mating surface, the dewatering orifice with When the mudhole connection or dislocation are closed, the rotary spacing portion can be with the first limit mating surface or second limit Mating surface abuts against.

Come control of sewage disposal hole to improve rotation valve body with dewatering orifice be connected to or misplace the operability and accuracy of closure, turn One in connector and valve body is equipped with rotary spacing portion, another is equipped with rotary spacing auxiliary section, rotary spacing auxiliary section With the first limit mating surface and the second limit mating surface, when valve body turns to rotary spacing portion and the first limit mating surface or the When abutting against, valve body can not be rotated further two limit mating surfaces, and dewatering orifice is connected to or misplaces with mudhole closure at this time.

Optionally, the valve body is equipped with driving portion, and the driving portion is multilateral shape or round.

Valve body is equipped with driving portion, and driving portion may be configured as multilateral shape or round, is conducive to user manually or makes Rotation or disassembling operations are carried out to valve body with tool.

Optionally, magnesium stick is equipped in the liner, the magnesium stick is fixedly connected with the adapter, the adapter and institute It is detachably connected to state sewage draining exit.

Magnesium stick is equipped in liner, magnesium stick is fixed on by being fixedly connected with adapter in liner, and adapter is removably It is fixed at sewage draining exit, when something goes wrong so as to magnesium stick, can be removed the magnesium stick for being secured to connection by dismantling adapter, into The replacement of row magnesium stick is overhauled.

The technical solution of the utility model has the advantages that compared with prior art：

1, by the detachably connected adapter on the sewage draining exit of liner, by active joint, clip by adapter with Valve body is flexibly connected, and so that the mudhole on valve body is connected to or misplace with the dewatering orifice on adapter closure by rotating valve body, i.e., It can easily realize opening or closing for blowdown valve module, switch blowdown maintenance or the normal heating function of liner, side easy to operate Just；

2, by the way that gasket is arranged between valve body and adapter, the connection not only improved between valve body and adapter seals Property, meanwhile, mudhole or dewatering orifice are connected to and are sealed with sealing surface by the intercommunicating pore on gasket, realizes blowdown valve The opening and closing of component；

3, by the way that positioning column and location hole is arranged, gasket is fixedly connected with valve body or fixes gasket and adapter Connection, with prevent gasket in valve body rotation process can not in time transfer or occur transfer, ensure that the connection on gasket Hole and sealing surface are communicated or sealed function；By the way that the positioning column on valve body or adapter is inserted into the intercommunicating pore of gasket, Gasket is distorted deformation when preventing valve body from rotating, and influence the intercommunicating pore and sealing surface on gasket is communicated or sealed work( Energy；

4, by the way that rotary spacing portion and rotary spacing auxiliary section are respectively set on adapter and valve body, make the rotation of valve body Control convenient reliable, can accurately realize that mudhole be connected to or misplace with dewatering orifice closure, raising blowdown valve module opening or The operability of closing.

Other features and advantages of the utility model will illustrate in the following description, also, partly from specification In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages can pass through Specifically noted structure is realized and is obtained in specification, claims and attached drawing.

Description of the drawings

Attached drawing is used for providing further understanding technical solutions of the utility model, and a part for constitution instruction, With for explaining the technical solution of the utility model, do not constituted to technical solutions of the utility model together with embodiments herein Limitation.

Fig. 1 is the structural schematic diagram according to the electric heater of the utility model embodiment one；

Fig. 2 is the dimensional structure diagram of blowdown valve module shown in FIG. 1；

Fig. 3 is the schematic cross-sectional view of blowdown valve module shown in Fig. 2, and wherein blowdown valve module is closed；

Fig. 4 is the portions the A structure enlargement diagram of blowdown valve module in Fig. 3；

Fig. 5 is the schematic cross-sectional view of blowdown valve module shown in Fig. 2, and wherein blowdown valve module is in the open state；

Fig. 6 is the dimensional structure diagram of valve body in Fig. 2；

Fig. 7 is the schematic cross-sectional view of valve body in Fig. 6；

Fig. 8 is the overlooking structure diagram of valve body in Fig. 6；

Fig. 9 is the portions the B structure enlargement diagram of valve body in Fig. 8；

Figure 10 is the dimensional structure diagram of adapter in Fig. 2；

Figure 11 is the schematic cross-sectional view of adapter in Figure 10；

Figure 12 is the present invention looks up structural representation of adapter in Figure 10；

Figure 13 is the portions the C structure enlargement diagram of adapter in Figure 12；

Figure 14 is the dimensional structure diagram of gasket in Fig. 2；

Figure 15 is the schematic cross-sectional view of gasket in Figure 14；

Figure 16 is the schematic cross-sectional view according to the blowdown valve module of the electric heater of the utility model embodiment two；

Figure 17 is the portions the D structure enlargement diagram of blowdown valve module in Figure 16；

Figure 18 is the overlooking structure diagram of the valve body of the embodiment of the present invention three；

Figure 19 is the present invention looks up structural representation of the adapter of the embodiment of the present invention three；

Figure 20 is the dimensional structure diagram of the gasket of the embodiment of the present invention three.

Wherein, the relationship in Fig. 1-Figure 20 between reference numeral and component names is：

1 liner, 2 water stopping caps, 3 water inlet components, 4 outlet components, 5 sewage draining exits, 6 blowdown valve modules, 61,61 ' valve bodies, 611 Mudhole, 612 card slots, 613,613 ' driving portions, 614 rotary spacing portions, 615 ' flanges, 62 gaskets, 621 intercommunicating pores, 622 is close Cover, 623 sealed muscles, 624 relief holes, 63 adapters, 631 dewatering orifices, 632 boss, 633 positioning columns, the cooperation of 634 rotary spacings Portion, 6,341 first limit mating surfaces, 6,342 second limit mating surfaces, 64 clips, 65 active joints, 651 boss, 66 gaskets, 7 Magnesium stick.

Specific implementation mode

To make the purpose of this utility model, technical solution and advantage be more clearly understood, below in conjunction with attached drawing to this The embodiment of utility model is described in detail.It should be noted that in the absence of conflict, embodiment in the application and Feature in embodiment mutually can be combined arbitrarily.

Embodiment one：

The embodiments of the present invention provide a kind of electric heater, and can easily realize blowdown valve module 6 plays on or off It closes, keeps 1 blowdown easy maintenance of liner quick and easy to operate.As shown in Figure 1, the electric heater include liner 1, water stopping cap 2, into Water assembly 3, outlet component 4, liner 1 are equipped with sewage draining exit 5, blowdown valve module 6 are equipped at sewage draining exit 5.Such as Fig. 2, Fig. 3 and Fig. 5 Shown, blowdown valve module 6 includes adapter 63 and valve body 61, and 63 one end of adapter connect to be fixed on liner 1 with sewage draining exit 5 On, the other end is connect with valve body 61, and valve body 61 can be moved relative to adapter 63, so that the dewatering orifice being arranged on adapter 63 631 are connected to the mudhole 611 being arranged on valve body 61, and blowdown valve module 6 is in the open state at this time, can arrange liner 1 Dirt maintenance can also be such that the dewatering orifice 631 on adapter 63 is closed with the dislocation of mudhole 611 on valve body 61, at this time blowdown valve Component 6 is closed, and ensures 1 excellent sealing of liner, electric heater can normal use heating function.

Optionally, adapter 63 is detachably connected on sewage draining exit 5, makes 63 convenient disassembly of adapter, facilitate user into The disassembling, assembling and replacing of row blowdown valve module 6.Specifically, in the present embodiment, the internal face of adapter 63 is equipped with internal thread, blowdown The outside wall surface of mouth 5 is equipped with external screw thread, adapter 63 and 5 bolt of sewage draining exit.Further, between sewage draining exit 5 and adapter 63 It is provided with gasket 66, the internal face of adapter 63 is equipped with boss 632 to support gasket 66, gasket 66 to play sealing and make With preventing leak from the side gap between sewage draining exit 5 and adapter 63.

Optionally, valve body 61 is rotatablely connected with adapter 63.Specifically, as shown in Figure 10-Figure 13, the lower end of adapter 63 Face is equipped with one group of symmetrical dewatering orifice 631；As shown in Fig. 6-Fig. 9, the upper surface of valve body 61 is symmetrically divided equipped with one group The mudhole 611 of cloth.As shown in figure 5, rotation valve body 61 makes the dewatering orifice 631 on adapter 63 and the mudhole on valve body 61 When 611 connection, blowdown valve module 6 is in the open state, you can carries out blowdown maintenance to liner 1.1 blowdown of liner need not be used When maintenance function, as shown in figure 3, rotation valve body 61 keeps the mudhole 611 on valve body 61 and the dewatering orifice 631 on adapter 63 wrong Position is closed, and blowdown valve module 6 is made to close, you can ensures 1 excellent sealing of liner, electric heater can normal use heating function.

The technical solution of the present embodiment, valve body 61 are rotatablely connected with adapter 63, are made on valve body 61 by rotating valve body 61 Mudhole 611 and the dewatering orifice 631 on adapter 63 be connected to or misplace closure, you can easily switching blowdown valve module 6 is beaten Open or close closed state, the blowdown maintenance using liner 1 and normal heating function.When user needs to carry out the blowdown maintenance of liner 1, Rotation valve body 61 opens blowdown valve module 6, and the mudhole 611 on valve body 61 connects with the dewatering orifice 631 on adapter 63 at this time Logical, dirt, the impurity in liner 1 can be discharged from mudhole 611 for water flowing；After blowdown is maintained, by rotating backward valve Body 61 makes the mudhole 611 on valve body 61 be closed with the dislocation of dewatering orifice 631 on adapter 63, you can blowdown valve module 6 is closed, At this point, mudhole 611 seals, liner 1 keeps sealing state, and electric heater can normal use heating function.The technical solution makes 1 blowdown easy maintenance of liner is quick and easy to operate, and the blowdown maintenance function and heated sealed of electric heater are carried out convenient for user The switching of function not only solves blowdown plug dismounting difficulty in existing electric heater, is not easy to 1 blowdown of liner maintenance, causes The problem of heating pipe surface sediment incrustation causes dry combustion method to damage, while also avoiding being dismounted for multiple times blowdown plug and be easy to causeing liner 1 poor sealing, the problem of causing electric heater leak.

It should be appreciated that it is contemplated that valve body 61 and adapter 63 carry out the mode of other movement connections, such as valve body 61 with turn Dewatering orifice 631 and mudhole 611 are respectively equipped on the side wall of connector 63, and adapter 63 is set in outside valve body 61, works as dewatering orifice 631 and when mudhole 611 corresponding in the axial direction, it can be discharged water by the relative rotation of adapter 63 and valve body 61, realization The closure that is connected to or misplaces in hole 631 and mudhole 611, or when dewatering orifice 631 and mudhole 611 are corresponding in circumferential direction When, can by adapter 63 and when moving to axial of valve body 61, realize dewatering orifice 631 and mudhole 611 be connected to or mistake Position is closed.

As shown in Figures 2 and 3, blowdown valve module 6 further includes active joint 65, and one end of active joint 65 is sleeved on valve body 61 It connect outside and with valve body 61, in the case where active joint 65 is motionless, valve body 61 can limit range relative to active joint 65 Interior rotation；The other end of active joint 65 is fixedly connected with adapter 63, to realize that valve body 61 is rotated with adapter 63 Connection.Optionally, in the present embodiment, the outside wall surface of adapter 66 is equipped with external screw thread, is set on the internal face of active joint 65 There are internal thread, active joint 65 and 63 bolt of adapter.

As shown in figure 4, valve body 61 is connected by clip 64 with active joint 65.Specifically, the inside of active joint 65 The bottom end of wall is equipped with the boss 651 protruded inwardly, and the outside wall surface of valve body 61 is equipped with the card slot 612 of indent, card slot 612 Height is essentially identical with the thickness size of clip 64, and the width of card slot 612 is less than the width of clip 64.Clip 64 is sleeved on card slot When in 612, the inside of clip 64 is contained in card slot 612, and the outside of clip 64 protrudes from card slot 612, and may be supported on boss On 651, active joint 65 is made mutually to be fixed in the axial direction with valve body 61, but active joint 65 can be relative to valve body 61 in week It is rotated up to side, to realize the rotation connection between valve body 61 and active joint 65, and active joint 65 and adapter 63 It is fixedly connected, and then realizes the rotation connection between valve body 61 and adapter 63.

Wherein, clip 64 is in the annular shape with opening, and ring-shaped clip 64 has certain elastic force, further selects stainless steel material It makes.When assembly, 64 small range of the circular flexible collar opening of one end open is put into card slot 612,64 shape of ring-shaped clip Shape meeting nature rebound, makes the inside of cyclic annular clip 64 be contained in card slot 612, outside protrudes from card slot 612 and may be supported on On boss 651.

Further, as shown in figure 3, being equipped with gasket 62 between valve body 61 and adapter 63, as shown in Figure 14 and Figure 15, Gasket 62 is equipped with the sealed muscle 623 of a ring shape, and sealed muscle 623 is located at the edge of gasket 62, and sealed muscle 623 is by valve Clearance seal between the edge and the edge of adapter 63 of body 61, in edge when preventing blowdown valve module 6 from opening or closing Leak occurs.

Further, it is additionally provided with intercommunicating pore 621 and sealing surface 622 on gasket 62, passes through the intercommunicating pore 621 on gasket 62 Mudhole 611 is connected to by realization with dewatering orifice 631, by the sealing surface 622 on gasket 62, by mudhole 611 or can be discharged water Hole 631 seals, and makes mudhole 611 that can not be connected to dewatering orifice 631, realizes the open and close function of blowdown valve module 6.

Optionally, the gasket 62 between valve body 61 and adapter 63, which is arranged, to be fixed with 61 phase of valve body, can also It is relatively fixed with the holding of adapter 63.

Example one：

Optionally, when gasket 62 is fixed with 63 phase of adapter, the intercommunicating pore 621 and adapter on gasket 62 at this time Dewatering orifice 631 on 63 is connected and relative position is kept to fix always, rotation valve body 61 make mudhole 611 and intercommunicating pore 621, When the position of dewatering orifice 631 is corresponding, mudhole 611 is connected to intercommunicating pore 621, dewatering orifice 631, i.e., blowdown valve module 6 is in 1 blowdown maintenance function of liner can be used in opening state；Rotating backward valve body 61 makes mudhole 611 and intercommunicating pore on valve body 61 621, dewatering orifice 631 misplaces, and when being overlapped with sealing surface 622, sealing surface 622 seals mudhole 611, i.e. blowdown valve module 6 It is closed, ensures 1 good seal of liner, it can normal use heating function.

Further, it when gasket 62 is fixed with 63 phase of adapter, can be set on one in adapter 63 and gasket 62 There is positioning column 633, location hole can be equipped on another, gasket 62 and switching are made by the cooperation of positioning column 633 and location hole First 63 realize circumferentially positioned fixation, so that the intercommunicating pore 621 on gasket 62 is aligned with the dewatering orifice 631 on adapter 63 It is accurate and relative position is kept to fix, and be constantly in conducting state, prevent in 61 rotation process of valve body gasket 62 relative to Transfer occurs for adapter 63, influences conducting and the sealing performance of the intercommunicating pore 621 and sealing surface 622 on gasket 62.

Specifically, in the present embodiment, positioning column 633 is set in adapter 63, the intercommunicating pore 621 on gasket 62 is used as Location hole.As shown in fig. 10 and fig. 12, the marginal position of the dewatering orifice 631 on adapter 63 can be symmetrical arranged two positioning columns 633, two positioning columns 633 can be inserted into the intercommunicating pore 621 of gasket 62 and be abutted against with 621 edge of intercommunicating pore.Pass through positioning column 633 can effectively ensure that gasket 62 is accurately fixed on the lower face of adapter 63 with the cooperation of intercommunicating pore 621, in addition, two Positioning column 633 can be supported the intercommunicating pore 621 on gasket 62, prevent gasket 62 in valve body 61 with respect to 63 turns of adapter Torsional deformation during dynamic, in turn results in intercommunicating pore 621 or sealing surface 622 deforms, influence intercommunicating pore 621 conduction property and The sealing performance of sealing surface 622.

In addition, by positioning column 633 and intercommunicating pore 621 coordinating, can avoid that location hole is in addition arranged on gasket 62, Reduce the quantity of trepanning on gasket 62 so that the structure of gasket 62 is simple, easy to process, and avoids trepanning to sealing 62 sealing performances are padded to adversely affect.

Example two：

Optionally, when gasket 62 is fixed with 61 phase of valve body, at this time on the intercommunicating pore 621 on gasket 62 and valve body 61 Mudhole 611 be connected always and relative position kept to fix, rotation valve body 61 makes dewatering orifice 631 and mudhole 611, is connected to When the position in hole 621 is corresponding, mudhole 611, intercommunicating pore 621 are connected to dewatering orifice 631, i.e., blowdown valve module 6, which is in, opens 1 blowdown maintenance function of liner can be used in state；Rotating backward valve body 61 keeps dewatering orifice 631 and mudhole 611, intercommunicating pore 621 wrong Position, and when being overlapped with sealing surface 622, sealing surface 622 seals dewatering orifice 631, i.e. blowdown valve module 6 is closed, guarantor 1 good seal of liner is demonstrate,proved, it can normal use heating function.

Further, it when gasket 62 is fixed with 61 phase of the valve body, can be set on one in valve body 61 and gasket 62 Have positioning column 633, location hole can be equipped on another, by the cooperation of positioning column 633 and the location hole make gasket 62 with Valve body 61 realizes circumferentially positioned fixation, so that the intercommunicating pore 621 on gasket 62 is aligned with the mudhole 611 on valve body 61 It is accurate and relative position is kept to fix, and be constantly in conducting state, prevent in 61 rotation process of valve body that gasket 62 cannot phase For 61 timely transfer of valve body（I.e. gasket 62 rotates relative to valve body 61）, influence the intercommunicating pore 621 on gasket 62 Conducting with sealing surface 622 and sealing performance.

Further, two positioning columns can be symmetrical arranged at the position at 611 edge of mudhole on valve body 61, two is fixed Position column is inserted into the intercommunicating pore 621 of gasket 62 and is abutted against with 621 edge of intercommunicating pore, realizes gasket 62 and the valve body 61 Fixation.

It, can be in one in adapter 63 and valve body 61 to improve the convenience of mudhole 611 and 631 opening and closing operations of dewatering orifice A to be equipped with rotary spacing portion 614, another is equipped with rotary spacing auxiliary section 634.Specifically, in the present embodiment, as schemed Shown in 6- Fig. 9, valve body 61 is equipped with rotary spacing portion 614, and as shown in Figure 10-Figure 13, adapter 63 is matched equipped with rotary spacing Conjunction portion 634, there is the first limit mating surface 6341 and second to limit mating surface 6342 for rotary spacing auxiliary section 634, when valve body 61 It turns to rotary spacing portion 614 and first and limits mating surface 6341 when abutting against, valve body 61 can not be rotated further, at this time dewatering orifice 631 are closed with the dislocation of mudhole 611, and blowdown valve module 6 is closed；When valve body 61 turn to rotary spacing portion 614 with When second limit mating surface 6342 abuts against, valve body 61 can not be rotated further, and dewatering orifice 631 is connected to mudhole 611 at this time, row Dirty valve module 6 is in the open state.

As shown in figure 14, the center of gasket 62 is additionally provided with round relief hole 624, when between adapter 63 and valve body 61 plus When filling gasket 62, rotary spacing portion 614 and rotary spacing auxiliary section 634 on adapter 63 and valve body 61 can stretch into sealing To be coordinated in the relief hole 624 of pad 62, relief hole 624 is the mutual of rotary spacing portion 614 and rotary spacing auxiliary section 634 Movement is stepped down, and ensures excellent sealing between rotary spacing portion 614 and rotary spacing auxiliary section 634 and relief hole 624.

As shown in Figure 8 and Figure 9, rotary spacing portion 614 is in semicircle shape, the straight flange in the rotary spacing portion 614 of semicircle shape and row The straight flange in dirty hole 611 is parallel and conllinear（As shown in phantom in Figure 9）；As shown in Figure 12 and Figure 13, rotary spacing auxiliary section 634 is cyclic annular in fan, and it is 90 degree to fan the central angle corresponding to ring, and the first limit mating surface 6341 and second limits mating surface 6342 The both ends of fan turning annular spacing auxiliary section 634 are located at, the first limit mating surface 6341 and second limits mating surface 6342 The angles of extended line of two straight flanges be 90 °, be based on angle design, rotary spacing auxiliary section 634 limits 614, rotary spacing portion It can be rotated within the scope of 90 °, valve body 61 is made to turn to two extreme positions（I.e. rotary spacing portion 614 matches with the first limit respectively Conjunction face 6341 or second limits mating surface 6342 and offsets）When realize that 611 fully on state of mudhole or mudhole 611 are complete respectively Whole sealing status ensures that blowdown valve module 6 opens or closes state.

As shown in fig. 6, the peripheral surface of 61 lower end of valve body is equipped with driving portion 613, and driving portion 613 may be configured as polygon Shape（Such as regular hexagon）, user is facilitated to carry out driving rotation or disassembling operations manually or using tool to valve body 61.

As shown in Figure 1, being equipped with magnesium stick 7 in liner 1, magnesium stick 7 is fixed on liner 1 by being fixedly connected with adapter 63 It is interior.Since adapter 63 is screwed onto on sewage draining exit 5, it is easy to assembly to dismantle, can replacement maintenance easily be carried out to magnesium stick 7, Improve the service life of electric heater.

Embodiment two：

Present embodiments provide a kind of electric heater, with embodiment one the difference is that：Valve body and active joint Between realize that the mode of rotation connection is different.

As shown in Figure 16 and Figure 17, in the present embodiment, the flange 615 ' of annular, active joint are provided on valve body 61 ' 65 be sleeved on valve body 61 ' it is outer when, be supported on the boss 651 on active joint 65 by the flange 615 ' on valve body 61 ', realize live Dynamic connector 65 is mutually fixed in the axial direction with valve body 61 ', but active joint 65 can be relative to valve body 61 ' in circumferential direction Rotation.

In the present embodiment, as shown in figure 16, the exposed parts of 61 ' lower end of valve body are cylinder, and active joint 65 can be from valve The lower end of body 61 ' is directly set in 61 ' outside wall surface of valve body, by flange 615 ' on valve body 61 ' with it is convex on active joint 65 Platform 651 abuts against, and valve body 61 ' is mounted on 65 inside of active joint, and valve body 61 ' can be rotated relative to active joint 65.

Compared to embodiment one, in the present embodiment, without adding clip between valve body 61 ' and active joint 65, directly lead to It crosses the flange 615 ' on valve body 61 ' with the boss 651 on active joint 65 to be connected, simplifies connection component and assemble flow, more Be conducive to the processing of valve body 61 ' and 65 structure of active joint, improve production efficiency.

The cylindrical exposed parts of 61 ' lower end of valve body are driving portion 613 ', can be by driving manually or using tool operation Dynamic portion 613 ' drives valve body 61 ' to be rotated.

In conjunction with attached drawing Fig. 1-Figure 17, the concrete operating principle of electric heater provided by the utility model is as follows：

When needing using blowdown maintenance function, driving portion 613 is rotated（Or 613 '）Make valve body 61（Or 61 '）90 ° of rotation, It is abutted against until the straight flange of rotary spacing auxiliary section 634 limits mating surface 6342 with second, at this point, mudhole 611 and intercommunicating pore 621, dewatering orifice 631 is connected to, i.e., blowdown valve module 6 is in the open state, and liner 1 is cleaned in water flowing, the sewage after cleaning It is discharged by dewatering orifice 631, intercommunicating pore 621, mudhole 611 at sewage draining exit 5.

Conversely, rotating backward driving portion 613（Or 613 '）Make valve body 61（Or 61 '）90 ° of revolution, until rotary spacing coordinates Portion 634 is reversely rotated until its straight flange and the first limit mating surface 6341 abut against, at this point, mudhole 611 and intercommunicating pore 621 and The dislocation of its corresponding dewatering orifice 631 is closed, and mudhole 611 is overlapped with sealing surface 622, i.e., blowdown valve module 6 is closed, Ensure that 1 good seal of liner, electric heater can be normally carried out heating.

Embodiment three：

The present embodiment and embodiment one or embodiment two the difference is that：The connection and dislocation of dewatering orifice and mudhole Closing structure is different.

As depicted in figures 18-20, in the present embodiment, mudhole 611 and dewatering orifice 631 are cyclic annular in fan, and fan corresponding to ring Central angle is 180 °, wherein rotary spacing portion 614 is cyclic annular in fan, and it is 90 ° to fan the central angle corresponding to ring, fans cricoid turn One straight flange of dynamic limiting section 614 is parallel with the straight flange of mudhole 611）；Rotary spacing auxiliary section 634 is cyclic annular in fan, and fans Central angle corresponding to ring is 90 °, and the first limit limit of mating surface 6341 and second mating surface 6342 is located at fan ring-type and turns The both ends of dynamic spacing auxiliary section 634, the first limit mating surface 6341 and second limit the extended line of two straight flanges of mating surface 6342 Angle be 90 °, based on this design, rotary spacing auxiliary section 634 limits rotary spacing portion 614 can only be in 0-180 ° of range inward turning Turn, valve body 61 is made to turn to two extreme positions（I.e. rotary spacing portion 614 is limited with the first limit mating surface 6341 or second respectively Position mating surface 6342 offsets）When realize 611 fully sealed position of 611 fully on state of mudhole or mudhole respectively, in turn Realize that blowdown valve module 6 opens or closes state.

In the present embodiment, two positioning columns, two positioning are symmetrical arranged at the position at 611 edge of mudhole on valve body 61 Column is inserted into the intercommunicating pore 621 of gasket 62 and is abutted against with 621 edge of intercommunicating pore, realizes gasket 62 and the valve body 61 It is fixed.

Optionally, on the adapter 63 close to 631 edge of dewatering orifice position at be symmetrical arranged two positioning columns, described two Positioning column is inserted into the intercommunicating pore 621 of gasket 62 and is abutted against with bore edges are connected to, and realizes gasket 62 and adapter 63 It is fixed.

Although the embodiment disclosed by the utility model is as above, the content only the utility model for ease of understanding And the embodiment used, it is not limited to the utility model.Technical staff in any the utility model fields, Under the premise of not departing from the spirit and scope disclosed by the utility model, it can be carried out in the form and details of implementation any Modification and variation, but the scope of patent protection of the utility model, the appended claims that must still be subject to are defined.

Claims (10)

1. a kind of electric heater, including liner, the liner is equipped with sewage draining exit, which is characterized in that is equipped at the sewage draining exit Blowdown valve module, the blowdown valve module include adapter and valve body, and the adapter is fixedly connected with the sewage draining exit, described Valve body connect with the adapter and can be moved relative to the adapter, and the adapter is equipped with dewatering orifice, the valve body It is equipped with mudhole, the dewatering orifice can be connected to or misplace with the mudhole closure.

2. electric heater according to claim 1, which is characterized in that the lower face of the adapter is equipped with dewatering orifice, The upper surface of the valve body is equipped with mudhole, and the valve body is rotatablely connected with the adapter.

3. electric heater according to claim 2, which is characterized in that the blowdown valve module further includes active joint, institute It states active joint one end to be sleeved on outside the valve body and be rotatablely connected with the valve body, the other end is fixed with the adapter.

4. electric heater according to claim 3, which is characterized in that the valve body passes through clip and the active joint phase The madial wall of connection, the active joint is equipped with boss, and the valve body is equipped with card slot, institute is contained on the inside of the clip It states in card slot, the outside-supporting of the clip is on the boss；Alternatively, the madial wall of the active joint is equipped with boss, The lateral wall of the valve body is equipped with flange, and the flange support is on the boss.

5. according to the electric heater described in any one of claim 2-4, which is characterized in that the valve body and the adapter it Between be equipped with gasket, the gasket mutually fixes with the adapter, and the gasket is described equipped with intercommunicating pore and sealing surface The dewatering orifice can be connected to by intercommunicating pore with the mudhole, and the sealing surface can seal the mudhole；Alternatively, the valve Gasket is equipped between body and the adapter, the gasket is mutually fixed with the valve body, and the gasket is equipped with connection The dewatering orifice can be connected to by hole and sealing surface, the intercommunicating pore with the mudhole, and the sealing surface can be by the dewatering orifice Sealing.

6. electric heater according to claim 5, which is characterized in that when the gasket is mutually fixed with the adapter, One in the adapter and the gasket is equipped with positioning column, another is equipped with location hole, the positioning column and institute State location hole cooperation；Alternatively, when the gasket is mutually fixed with the valve body, on one in the valve body and the gasket Equipped with positioning column, another is equipped with location hole, and the positioning column coordinates with the location hole.

7. electric heater according to claim 5, which is characterized in that when the gasket is mutually fixed with the adapter, The adapter is equipped with two positioning columns, and two positioning columns are inserted into the intercommunicating pore and are abutted against with the intercommunicating pore；Or Person, when the gasket is mutually fixed with the valve body, the valve body is equipped with two positioning columns, and two positioning columns are inserted into the company It is abutted against in through-hole and with the intercommunicating pore.

8. according to the electric heater described in any one of claim 2-4, which is characterized in that in the adapter and the valve body One be equipped with rotary spacing portion, another is equipped with rotary spacing auxiliary section, and the rotary spacing auxiliary section is with first Mating surface and the second limit mating surface are limited, the dewatering orifice be connected to or misplaces with the mudhole when being closed, and the rotation limits Position portion can be abutted against with the first limit mating surface or the second limit mating surface.

9. according to the electric heater described in any one of claim 1-4, which is characterized in that the valve body is equipped with driving portion, The driving portion is multilateral shape or round.

10. according to the electric heater described in any one of claim 1-4, which is characterized in that be equipped with magnesium stick, institute in the liner It states magnesium stick to be fixedly connected with the adapter, the adapter and the sewage draining exit are detachably connected.