CN206036258U - Prevent control valve of leakage - Google Patents

Abstract

The utility model discloses a prevent control valve of leakage, including valve body and case, it has liquid chlorine runner to open in the valve body, and the valve body both sides are equipped with import and export with liquid chlorine runner intercommunication, and the case includes case body and disk seat, and the level is placed the disk seat of U -shaped and is installed at the middle part of liquid chlorine runner, and the disk seat will liquid chloride channel separates into first section runner and second section runner, is equipped with external diameter circle conic section under the sprue on the terminal surface, has all opened the intercommunication cavity in two vertical sections of disk seat, and the valve rod is vertical to run through two intercommunication cavitys, is being equipped with a plurality of fixture blocks along circle conic section circumference on its outer wall, and it has a plurality of draw -in grooves to open on intercommunication cavity inner wall, is fixed with the sealing ring at round conic section's lower terminal surface. Through the valve rod at the ascending reciprocating motion of vertical side, can realize intercommunication and switching between liquid chlorine storage tank and the transport tank, and then realize liquid chlorine filling in -process liquid chlorine flow's accurate control fast, avoid untimely or dam the poor leakage that results in liquid chlorine of precision because of damming of liquid chlorine.

Description

The control valve of anti-leak

Technical field

This utility model is related to a kind of control valve of liquid chlorine filling system, specifically refers to the control valve of anti-leak.

Background technology

In chemical industry chlor-alkali production industry, product is related to the harmful influences such as liquid chlorine, and its sale is filled with very big difficulty, and Fill the very various complexity of formality；As liquid chlorine has toxicity, easily gasifies, once occurring to reveal, process not in time or cannot locate During reason, the person will be caused serious injury, so as to cause serious accident, therefore which fills requirement strictly, safety guarantee Measure must be perfect.When liquefied chlorine cistern car is carried out, tank car pressure can rise with liquid chlorine temperature in tank car and increase, once hypertonia Tank car tank body just has the danger that blast occurs.Any liquid chloro container, its volumetric efficiency must not exceed 80%, it is seen that liquid chlorine filling During accurate metering just seem particularly significant, to not only consider safety factorss, and as benefit unit, its measuring accuracy Also it is directly connected to sales achievement.However, the metering that fills of liquid chlorine is a complex process affected by many factors, such as fill Error in dipping that the type selecting and alignment error of device itself causes, fill pipeline gas-liquid two-phase and evacuate error in dipping, the ring for causing Error that error in dipping that border temperature causes, extraneous vibration interference cause etc..Simultaneously for improving quantifying and loading metering benefit, reduce The lost on sale that error in dipping brings, had not only been had higher measuring accuracy, stability but also had been compared proper measurement environment from a kind of Mass flowmenter and open the quantitative controller for stopping and seem necessary to improve safety, just.

Utility model content

The purpose of this utility model is the control valve for providing anti-leak, it is ensured that flexible of the liquid chlorine when filling, and is carried The measuring accuracy of high liquid chlorine.

The purpose of this utility model is achieved through the following technical solutions：

The control valve of anti-leak, including valve body and valve element, is provided with liquid chlorine runner in valve body, valve body both sides be provided with respectively with liquid The inlet and outlet of chlorine flow passage, the valve element include insert body and matched U-shaped valve seat, horizontal positioned U-shaped Valve seat be arranged on liquid chlorine runner middle part, valve seat is by the liquid chlorine channel partition into first paragraph runner and second segment runner, institute Stating insert body includes valve rod and two sprues being disposed on valve rod, is provided with external diameter along stem shaft on sprue lower surface The conical section that line direction is successively decreased downwards, conical section are set on the outer circle wall of valve rod, the valve seat horizontal positioned, and in valve seat Two vertical sections on be provided with the connection cavity being engaged with conical section, valve rod vertically runs through two connection cavitys, Multiple fixture blocks are provided with its external wall circumferentially along the conical section, be provided with and multiple mutually fit with the fixture block on connection cavity inner wall The draw-in groove answered, is fixed with sealing ring in the lower surface of the conical section, and the external diameter of the sealing ring is more than under the connection cavity The internal diameter of end opening；Two baffles just to connection cavity lower ending opening, the baffle epimere is provided with the valve rod External diameter successively decreases upwards along the valve rod axis, and is circumferentially provided with multiple guiding gutters, institute on its external wall along the baffle epimere The width for stating guiding gutter is incremented by along the valve rod axis downwards；Supporter is installed in valve body upper end, gripper shoe is fixed on support Body upper surface, is provided with cavity in the middle part of supporter, is provided with drive rod in valve rod upper end, and the drive rod activity runs through the sky Upwardly extend behind chamber, gripper shoe, be provided with filler in the cavity, be additionally provided with retreat stop block in valve inner, retreat stop block it is upper End face is provided with the retaining hole just to valve rod bottom.

For, in prior art, control valve element easily occurs the inaccurate and caused leakage problem that dams when in use, sends out It is bright that existing valve element is improved, on the premise of control valve element flexible is ensured, improve damming precisely for control valve element Degree, to ensure measuring accuracy of the liquid chlorine in filling process, what the loss for reducing liquid chlorine improved liquid chlorine simultaneously fills efficiency；Use When, it is provided with liquid chlorine runner in valve body, and the valve seat horizontal positioned of U-shaped is arranged on the middle part of liquid chlorine runner so that valve body enters Mouth connects cavitys and outlet by two be opened on valve seat, and before filling, conical section is contacted with connection cavity wall, while Fixture block is cooperated with draw-in groove so that two connection cavitys realize primary seal, and the sealing ring on conical section lower surface is then real The secondary seal of cavity lower ending opening is connected now, by primary seal and secondary seal so that liquid chlorine runner is insulated completely Into two parts, to maintain to control valve element to liquid chlorine storage tank and extraneous isolation effect；When filling, liquid chlorine is flowed into by import In the first paragraph runner constituted between U-shaped valve base inner wall and import, now stir valve rod so that conical section with connect cavity wall it Between be gradually disengaged, liquid chlorine then along connection cavity and conical section between gap enter into U-shaped valve seat outer wall and outlet between constitute Second segment runner in, eventually pass outlet and be injected in transfer cask body.By the reciprocating motion of valve rod in the vertical direction, i.e., Connection and opening and closing between achievable liquid chlorine storage tank and transfer cask, and then quickly realize the essence of liquid chlorine flow during liquid chlorine filling Really control, it is to avoid damming not in time or dam low precision and cause the leakage of liquid chlorine because of liquid chlorine, ensure that liquid chlorine exists to reach Flexible when filling, improves the purpose of the measuring accuracy of liquid chlorine.

Wherein, move on the valve rod until conical section with connect after cavity inner wall completely disengages from, liquid chlorine is quickly through connecting chamber Body is flowed in second segment runner by first paragraph runner, and now the liquid chlorine in first paragraph runner can be because under connection cavity above End opening internal diameter it is less and select it is underlying connection cavity in flow out, and in first paragraph runner the overwhelming majority liquid chlorine can be right The valve interior wall of the connection cavity lower ending opening for being just pointed to lower section in second segment runner forms intense impact, can lead when serious Valve interior wall is caused to be subject to sharp impacts and be damaged, inventor is provided with two on valve rod and just leads to connecting cavity lower ending opening Block is flowed, and the epimere external diameter of the baffle successively decreases upward along valve rod axis, i.e., a circular cone is formed in the lower end of connection cavity The guide face of shape so that the liquid chlorine in first paragraph runner is again divided into two plumes and goes out, i.e., guiding of the first strand liquid chlorine in guide face Flow out at lower edge connection cavity lower ending opening above, and second strand of liquid chlorine is along underlying connection cavity lower ending opening Place flows out, and second strand of liquid chlorine is spread apart to surrounding after flowing in second segment runner under the guiding of guide face, it is to avoid can To a little carrying out constant impingement on valve interior wall, and then the loss percentage of valve interior wall is reduced, while ensureing by first paragraph runner The flow for branching in second segment runner two strands of liquid chlorines tends to balance, equal with the stress for ensureing upper and lower two parts in valve body Weighing apparatus, it is to avoid the lower section excessive wear of valve interior wall and reduce its service life.Further, what is be provided with guide face multiple leads Chute can improve the water conservancy diversion effect in first paragraph runner and second segment runner, the width of guiding gutter along valve rod axially down It is incremented by, i.e., in first strand of liquid chlorine when flowing out, the flow velocity of first strand of liquid chlorine in the guiding gutter that flow area gradually successively decreases can be by Edge up height, i.e., guiding gutter to outside first strand of liquid chlorine arrange effect play booster action so that along above within the unit interval Guide face flow out liquid chlorine flow increase；And when second strand of liquid chlorine flows out, second strand of liquid chlorine gradually increases in flow area Plus guiding gutter in flow velocity can be gradually lowered, i.e., guiding gutter now plays the work for slowing down to the flowing velocity of second strand of liquid chlorine With so that the liquid chlorine flow-reduction flowed out along underlying guide face within the unit interval, to reduce second strand of liquid chlorine to valve The impact dynamics in internal portion.

Further, in valve body, liquid chlorine cut-off sealing is realized by the cooperation between valve element and valve seat, and the drive of valve rod Dynamic part is same easily to there is leakage, therefore inventor, in the upper surface fixed support body of valve body, the upper end of supporter is fixed with Gripper shoe, the gripper shoe are used for installing the driver parts such as cylinder, and the upper end of valve rod is provided with drive rod, and sets in the middle part of supporter There is a cavity, in cavity, be filled with filler, drive rod is upwardly extended after cavity and gripper shoe of the activity in supporter successively, Until being connected with the outfan of driver part, similarly, sealing gasket is installed in supporter lower end, the sealing gasket will can drive Between the lower end of bar and cavity, isolation is opened, and by sealing gasket and dual-seal of the filler to drive rod, can avoid the liquid in valve body Leak at the driver part of chlorine Jing valve elements, also, axle sleeve is installed in gripper shoe with the junction of supporter, drive rod activity is passed through The axle sleeve is worn, to ensure that drive rod can be realized up and down reciprocatingly transporting after being connected with driver part outfan under air-proof condition It is dynamic.

The width of the fixture block successively decreases along the axis direction of the valve rod downwards.Fixture block causes conical section with the cooperation of draw-in groove Increase with the contact area between cavity wall is connected, that is, increase the sealing effectiveness of primary seal, while the width of fixture block is along valve rod Axis direction successively decrease downwards, similarly connect cavity wall on draw-in groove groove width also successively decrease along the axis direction of valve rod downwards, i.e., The liquid chlorine residual quantity in draw-in groove can be reduced when blocking to liquid chlorine runner, and fixture block is in the contact process with draw-in groove, The deformation quantity that fixture block is squeezed and occurs can be restricted in the part that draw-in groove groove width is gradually reduced, i.e., fixture block and draw-in groove it Between interaction force along valve rod axially direction directed downwardly be incremented by, and then increase primary seal sealing effectiveness.

U-shaped of the longitudinal cross-section of the sealing ring for horizontal positioned.Preferably, the longitudinal cross-section of sealing ring is U-shaped, i.e., In the folding process of valve rod, sealing ring is gradually contacted with the lower ending opening of connection cavity, until draw-in groove is agreed with completely with fixture block, Valve rod stops movement, and now sealing ring occurs certain deformation and secondary seal is realized in the lower end to connecting cavity, and longitudinal cross-section For U-shaped sealing ring when with connecting cavity and occurring mutually to extrude, the deformation of sealing ring outer circumference is by its U-shaped portion point Possess certain deformation space, that is, prevent the part for playing sealing function on sealing ring not result in internal action stress concentration And be damaged, to guarantee the stability of secondary seal, while extending the service life of sealing ring.

The fixture block and sealing ring adopt politef material.Preferably, liquid chlorine possesses active chemical Matter, is provided simultaneously with corrosivity, and the service life of the general elastomeric material as sealing medium under liquid chlorine environment is shorter, easily There is the phenomenon of hardening cracking, and inventor selects politef material as fixture block and the raw material of sealing ring, utilize Its good decay resistance, to ensure to ensure the stability of primary seal and secondary seal in control valve, while extend The frequency that low control valve inner part is changed, drops in the service life of fixture block and sealing ring.

This utility model compared with prior art, has the following advantages and advantages：

1st, this utility model is by the reciprocating motion of valve rod in the vertical direction, you can realize liquid chlorine storage tank and transfer cask it Between connection and opening and closing, and then quickly realize the precise control of liquid chlorine flow during liquid chlorine filling, it is to avoid because of damming for liquid chlorine Not in time or dam low precision and cause the leakage of liquid chlorine, ensure flexible of the liquid chlorine when filling to reach, improve liquid The purpose of the measuring accuracy of chlorine；

2nd, the draw-in groove groove width on connection cavity wall of the present utility model is also successively decreased along the axis direction of valve rod downwards, i.e., right Liquid chlorine runner can reduce the liquid chlorine residual quantity in draw-in groove when being blocked, and fixture block is in the contact process with draw-in groove, fixture block The deformation quantity for being squeezed and occurring can be restricted in the part that draw-in groove groove width is gradually reduced, i.e., between fixture block and draw-in groove Interaction force along valve rod axially direction directed downwardly be incremented by, and then increase primary seal sealing effectiveness；

3rd, this utility model selects politef material as fixture block and the raw material of sealing ring, good using which Decay resistance, to ensure to ensure the stability of primary seal and secondary seal in control valve, while extend fixture block and The frequency that low control valve inner part is changed, drops in the service life of sealing ring.

Description of the drawings

Accompanying drawing described herein is used for providing further understanding this utility model embodiment, constitutes the one of the application Part, does not constitute the restriction to this utility model embodiment.In the accompanying drawings：

Structural representations of the Fig. 1 for insert body；

Fig. 2 is the installation diagram of insert body and valve body.

Labelling and corresponding parts title in accompanying drawing：

1- valve bodies, 2- imports, 3- retainings hole, 4- valve seats, 5- connection cavity, 51- draw-in grooves, 6- insert bodies, 61- valve rods, 62- sprues, 63- conical sections, 64- fixture blocks, 65- sealing rings, 66- baffles, 67- guiding gutters, 7- outlets, 8- sealing gaskets, 9- drive Lever, 10- fillers, 11- supporters, 12- axle sleeves, 13- gripper shoes.

Specific embodiment

For making the purpose of this utility model, technical scheme and advantage become more apparent, with reference to embodiment and accompanying drawing, The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this Utility model, is not intended as to restriction of the present utility model.

Embodiment 1

As depicted in figs. 1 and 2, the present embodiment includes valve body 1 and valve element, is provided with liquid chlorine runner, 1 both sides of valve body in valve body 1 The import 2 and outlet 7 respectively with liquid chlorine flow passage is provided with, the valve element includes insert body 6 and matched U-shaped valve Seat 4, the valve seat 4 of horizontal positioned U-shaped are arranged on the middle part of liquid chlorine runner, and valve seat 4 is by the liquid chlorine channel partition into first paragraph stream Road and second segment runner, the insert body 6 include valve rod 61 and two sprues 62 being disposed on valve rod 61, in sprue 62 lower surfaces are provided with the conical section 63 that external diameter successively decreases along 61 axis direction of valve rod downwards, and conical section 63 is set in the outer of valve rod 61 In circumferential wall, 4 horizontal positioned of the valve seat, and the company being engaged with conical section 63 is provided with two vertical sections of valve seat 4 Cavity body 5, valve rod 61 vertically through two connection cavitys 5, are circumferentially being provided with many along the conical section 63 on its external wall Individual fixture block 64, is provided with multiple draw-in grooves 51 being adapted with the fixture block 64, on connection 5 inwall of cavity in the conical section 63 Lower surface is fixed with sealing ring 65, and the external diameter of the sealing ring 65 is more than the internal diameter for connecting 5 lower ending opening of cavity；Described Valve rod 61 is provided with two baffles 66 just to connection 5 lower ending opening of cavity, and 66 epimere external diameter of the baffle is along the valve 61 axis of bar successively decreases upwards, and is circumferentially provided with multiple guiding gutters 67, the water conservancy diversion on its external wall along 66 epimere of the baffle The width of groove 67 is incremented by along 61 axis of the valve rod downwards；Supporter 11 is installed in 1 upper end of valve body, gripper shoe 13 is fixed on props up 11 upper surface of support body, is provided with the middle part of supporter 11, is provided with drive rod 9 in 61 upper end of valve rod, and 9 activity of the drive rod runs through Upwardly extend after the cavity, gripper shoe 13, filler 10 be provided with the cavity, inside valve body 1 be additionally provided with retreat stop block, The upper surface of retreat stop block is provided with the retaining hole 3 just to 61 bottom of valve rod.

For, in prior art, control valve element easily occurs the inaccurate and caused leakage problem that dams when in use, sends out It is bright that existing valve element is improved, on the premise of control valve element flexible is ensured, improve damming precisely for control valve element Degree, to ensure measuring accuracy of the liquid chlorine in filling process, what the loss for reducing liquid chlorine improved liquid chlorine simultaneously fills efficiency；Use When, liquid chlorine runner is provided with valve body 1, and 4 horizontal positioned of valve seat of U-shaped is arranged on the middle part of liquid chlorine runner so that valve body 1 Import 2 is connected with exporting 7 by be opened on valve seat 4 two connection cavitys 5, before filling, conical section 63 with connect 5 wall of cavity Contact, while fixture block 64 cooperates with draw-in groove 51 so that two connect cavitys 5 and realize primary seal, and 63 lower end of conical section Sealing ring 65 on face is then realized connecting the secondary seal of 5 lower ending opening of cavity, by primary seal and secondary seal so that Liquid chlorine runner is insulated into two parts completely, to maintain to control valve element to liquid chlorine storage tank and extraneous isolation effect；When filling, Liquid chlorine is flowed in the first paragraph runner constitute between 4 inwall of U-shaped valve seat and import 2 by import 2, now stirs valve rod 61, So that conical section 63 is gradually disengaged between 5 wall of cavity with connecting, gap of the liquid chlorine then between connection cavity 5 and conical section 63 is entered Enter in the second segment runner constituted between 4 outer wall of U-shaped valve seat and outlet 7, eventually pass outlet 7 and be injected in transfer cask body. By the reciprocating motion of 61 in the vertical direction of valve rod, you can realize the connection and opening and closing between liquid chlorine storage tank and transfer cask, enter And quickly realize the precise control of liquid chlorine flow during liquid chlorine filling, it is to avoid damming not in time or dam precision because of liquid chlorine Differ from and cause the leakage of liquid chlorine, ensure flexible of the liquid chlorine when filling to reach, improve the purpose of the measuring accuracy of liquid chlorine.

Wherein, move on the valve rod 61 until conical section 63 with connect after 5 inwall of cavity completely disengages from, liquid chlorine is quickly through company Cavity body 5 is flowed in second segment runner by first paragraph runner, and now the liquid chlorine in first paragraph runner can be because of connection above 5 lower ending opening internal diameter of cavity it is less and select it is underlying connection cavity 5 in flow out, and in first paragraph runner the overwhelming majority Liquid chlorine can form intense impact to 1 inwall of valve body of connection 5 lower ending opening of cavity for being just pointed to lower section in second segment runner, 1 inwall of valve body can be caused when serious to be subject to sharp impacts and be damaged, inventor is provided with two on valve rod 61 just to connecting chamber The baffle 66 of 5 lower ending opening of body, and the epimere external diameter of the baffle 66 successively decreases upward along 61 axis of valve rod, i.e., in connection chamber The lower end of body 5 forms a cone shape guide face so that the liquid chlorine in first paragraph runner is again divided into two plumes and goes out, i.e., and first Stock liquid chlorine is flowed out at the guiding lower edge of guide face 5 lower ending opening of connection cavity above, and second burst of liquid chlorine edge is located at Flow out at 5 lower ending opening of connection cavity of lower section, and second burst of liquid chlorine leading in guide face after flowing in second segment runner Draw and lower spread apart to surrounding, it is to avoid to a little carrying out constant impingement on 1 inwall of valve body, and then receiving for 1 inwall of valve body can be reduced Loss rate, while ensure that the flow for being branched to two strands of liquid chlorines in second segment runner by first paragraph runner tends to balance, to ensure valve The stress equalization of upper and lower two parts in body 1, it is to avoid the lower section excessive wear of 1 inwall of valve body and reduce its service life.Enter one Step ground, the multiple guiding gutters 66 being provided with guide face can improve the water conservancy diversion effect in first paragraph runner and second segment runner Really, the width of guiding gutter 66 is incremented by down along the axial direction of valve rod 1, i.e., in first strand of liquid chlorine when flowing out, first strand of liquid chlorine is in stream The flow velocity in guiding gutter 66 that logical section is gradually successively decreased can gradually rise, i.e., guiding gutter 66 to outside first strand of liquid chlorine arrange effect rise To booster action so that increase along the liquid chlorine flow that guide face above flows out within the unit interval；And in second strand of liquid When chlorine flows out, the flow velocity in the guiding gutter 66 that flow area gradually increases of second strand of liquid chlorine can be gradually lowered, i.e., now The flowing velocity of 66 pairs of second strand of liquid chlorines of guiding gutter plays a part of to slow down so that along underlying water conservancy diversion within the unit interval The liquid chlorine flow-reduction that surface current goes out, to reduce second strand of liquid chlorine to the impact dynamics inside valve body 1.

Further, retreat stop block is additionally provided with inside valve body 1, the upper surface of retreat stop block is provided with the retaining hole just to valve rod 61 3, during valve rod 61 is moved down, the end of valve rod 61 can move along a straight line along retaining hole 3, it is to avoid liquid chlorine is when filling to valve Bar 61 and conical section 63 are impacted and cause valve rod 61 that circular runout occurs, to improve the control accuracy of insert body 6.Its In, liquid chlorine cut-off sealing in valve body 1 is realized by the cooperation between valve element and valve seat 4, and the drive part of valve rod 61 is same Easily there is leakage, therefore inventor, in the upper surface fixed support body 11 of valve body 1, the upper end of supporter 11 is fixed with gripper shoe 13, the gripper shoe 13 is used for installing the driver parts such as cylinder, and the upper end of valve rod 61 is provided with drive rod 9, and in supporter 11 Portion is provided with cavity, and cavity is interior to be filled with filler 10, the cavity that activity runs through in supporter 11 successively of drive rod 9 and gripper shoe 13 After upwardly extend, until be connected with the outfan of driver part, similarly, sealing gasket 8 is installed in 11 lower end of supporter, this is close Isolation between the lower end of drive rod 9 and cavity can be opened by packing 8, by sealing gasket 8 with filler 10 to the dual close of drive rod Envelope, leaks at the driver part that can avoid the liquid chlorine Jing valve elements in valve body 1, also, in the connection of gripper shoe 13 and supporter 11 Place is provided with axle sleeve 12, and 9 activity of drive rod runs through the axle sleeve 12, to ensure that drive rod 9 is being connected with driver part outfan After can realize pumping under air-proof condition.

The width of the fixture block 64 successively decreases along the axis direction of the valve rod 61 downwards.Fixture block 64 is made with the cooperation of draw-in groove 51 Obtain conical section 63 and connect the contact area increase between 5 wall of cavity, that is, increase the sealing effectiveness of primary seal, while fixture block 64 Width successively decrease along the axis direction of valve rod 61 downwards, similarly connect 5 wall of cavity on 51 groove width of draw-in groove also along valve rod 61 Axis direction successively decreases downwards, i.e., can reduce the liquid chlorine residual quantity in draw-in groove 51, and fixture block when blocking to liquid chlorine runner 64 in the contact process of draw-in groove 51, and the deformation quantity that fixture block 64 is squeezed and occurs can be gradually reduced in 51 groove width of draw-in groove It is restricted in part, i.e., the interaction force between fixture block 64 and draw-in groove 51 is being passed along valve rod 61 axially direction directed downwardly Increase, and then increase the sealing effectiveness of primary seal.

Preferably, the longitudinal cross-section of sealing ring 65 is U-shaped, i.e., in the folding process of valve rod 61, sealing ring 65 is gradually Contact with the lower ending opening of connection cavity 5, until draw-in groove 51 is agreed with completely with fixture block 64, valve rod 61 stops movement, now seals Ring 65 there is certain deformation and the lower end to connecting cavity 5 realize secondary seal, and longitudinal cross-section for U-shaped sealing ring 65 with When connection cavity 5 occurs mutually to extrude, the deformation of 65 outer circumference of sealing ring possesses certain deformation by its U-shaped portion point Space, that is, prevent the part for playing sealing function on sealing ring 65 not result in internal action stress concentration and be damaged, with true The stability of secondary seal is protected, while extending the service life of sealing ring 65.

Preferably, liquid chlorine possesses active chemical property, corrosivity, the general rubber as sealing medium is provided simultaneously with Service life of the glue material under liquid chlorine environment is shorter, the phenomenon for hardening cracking easily occur, and inventor selects polytetrafluoroethyl-ne Alkene material as fixture block 64 and the raw material of sealing ring 65, using its good decay resistance, to ensure in control valve Ensure the stability of primary seal and secondary seal, while extending the service life of fixture block 64 and sealing ring 65, reduce control The frequency that valve inner part processed is changed.

Above-described specific embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect One step is described in detail, be should be understood that to the foregoing is only specific embodiment of the present utility model, is not used to limit Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, equivalent are replaced Change, improve, should be included within protection domain of the present utility model.

Claims (4)

1. the control valve of anti-leak, including valve body（1）And valve element, valve body（1）Liquid chlorine runner, valve body are provided with inside（1）Both sides are provided with Import with liquid chlorine flow passage respectively（2）And outlet（7）, it is characterised in that：The valve element includes insert body（6）And with Cooperation U-shaped valve seat（4）, the valve seat of horizontal positioned U-shaped（4）Installed in the middle part of liquid chlorine runner, valve seat（4）By the liquid chlorine Channel partition is into first paragraph runner and second segment runner, the insert body（6）Including valve rod（61）Be disposed on valve rod （61）On two sprues（62）, in sprue（62）Lower surface is provided with external diameter along valve rod（61）The circle that axis direction successively decreases downwards Cone section（63）, conical section（63）It is set in valve rod（61）Outer circle wall on, the valve seat（4）Horizontal positioned, and in valve seat（4） Two vertical sections on be provided with and conical section（63）The connection cavity being engaged（5）, valve rod（61）Vertically through described in two Connection cavity（5）, along the conical section（63）It is circumferential to be provided with multiple fixture blocks on its external wall（64）, in connection cavity（5）It is interior It is provided with wall multiple with the fixture block（64）Adaptable draw-in groove（51）, in the conical section（63）Lower surface be fixed with sealing Ring（65）, the sealing ring（65）External diameter be more than the connection cavity（5）The internal diameter of lower ending opening；In the valve rod（61）On Two are provided with just to connecting cavity（5）The baffle of lower ending opening（66）, the baffle（66）Epimere external diameter is along the valve rod （61）Axis successively decreases upwards, and along the baffle（66）Epimere is circumferentially provided with multiple guiding gutters on its external wall（67）, it is described Guiding gutter（67）Width along the valve rod（61）Axis is incremented by downwards；In valve body（1）Upper end is provided with supporter（11）, support Plate（13）It is fixed on supporter（11）Upper surface, in supporter（11）Middle part is provided with cavity, in valve rod（61）Upper end is provided with drive Lever（9）, the drive rod（9）Activity runs through the cavity, gripper shoe（13）After upwardly extend, be provided with the cavity Filler（10）, in valve body（1）Inside is additionally provided with retreat stop block, and the upper surface of retreat stop block is provided with just to valve rod（61）The retaining of bottom Hole（3）.

2. the control valve of anti-leak according to claim 1, it is characterised in that：The fixture block（64）Width along the valve Bar（61）Axis direction successively decrease downwards.

3. the control valve of anti-leak according to claim 1, it is characterised in that：The sealing ring（65）Longitudinal cross-section be The U-shaped of horizontal positioned.

4. the control valve of anti-leak according to claim 1, it is characterised in that：The fixture block（64）And sealing ring（65） Politef material is adopted.