CN204805590U - Valving, slide valve and sludge treatment system - Google Patents
Valving, slide valve and sludge treatment system Download PDFInfo
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- CN204805590U CN204805590U CN201520379183.2U CN201520379183U CN204805590U CN 204805590 U CN204805590 U CN 204805590U CN 201520379183 U CN201520379183 U CN 201520379183U CN 204805590 U CN204805590 U CN 204805590U
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Abstract
The utility model discloses a valving, slide valve and sludge treatment system relates to engineering machinery technical field. The problem of prior art have the technique that sealing element easily weares and teares is solved. This valving includes the valve body, disk seat and sealing device, wherein: sealing device sets up between the valve body and disk seat, the removal of the valve body is to closing the valve position or removing sealing element removal to the sealed position that offsets and press with the valve body that can drive sealing device and make sealing device when the convergence closes the valve position from driving the valve position, and/or the valve body can drive sealing device and maybe can remove being connected of the valve body and sealing device toward opening from closing the valve position when valve position moves, makes to offset the sealing element who presses with the valve body and throw off the valve body. This slide valve includes the utility model provides a valving. This sludge treatment system includes the utility model provides a slide valve. The utility model is used for improve sealing element's reliability and life.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly relates to a kind of valving, arranges the gate valve of this valving and arranges the sludge treating system of this gate valve.
Background technique
Sludge treating system is as a kind of novel environment friendly industry, and the extensive concern obtaining being subject to all circles develops rapidly.
Sludge treating system comprises multiple link, in order to carrying out in order of sludge treating system, often needs to use gate valve between each link interface.Material because of sludge treating system process is mud, its complicated component, comprises various corrosive material or sharp granule, very easily damages Sealing, so require that gate valve has reliable sealability.
As shown in Figure 1, existing gate valve is primarily of compositions such as oil cylinder 51, gate sheet 52, upper bracket 54, lower support frame 55, rubber sealing element 57 and nylon pads 56.Upper bracket 54 and lower support frame 55 form framework, and before and after gate sheet 52, both sides seal by rubber sealing element 57; The left and right sides seals by nylon pad 56.When gate valve closed by needs, oil cylinder 51 drives gate sheet 52 to protract, until compress rubber sealing element 57 foremost.When gate valve opened by needs, oil cylinder 51 moves to after driving gate sheet 52 and all opens.
The applicant finds: prior art at least exists following technical problem:
As shown in Figure 1, in prior art, before and after gate sheet 52, the rubber sealing element 57 being in sealing station on pressured its surface tight, both sides realizes sealing; The nylon pad 56 that the left and right sides abuts against its surface of pressure realizes sealing, reduces the frictional force between gate sheet 52 and framework simultaneously.Adopt nylon pad 56 to be because nylon friction factor is little, can wearing and tearing be reduced, but will realize sealing and need have certain impacting force to ensure to fit tightly to side plate.
Gate valve is because of frequent unlatching, cut out, a large amount of particle will inevitably be filled between gate sheet 52 and nylon pad 56, rubber sealing element 57, these particles move with gate sheet 52 and constantly cause wearing and tearing to nylon pad 56 and rubber sealing element 57 under the effect of impacting force, again because nylon material is harder, amount of deformation is little, finally make gate valve lose sealability, cause mud to leak.
Model utility content
One of them object of the present utility model is a kind of valving of proposition, arranges the gate valve of this valving and arrange the sludge treating system of this gate valve, solves prior art and there is seal element technical problem easy to wear.Many technique effects that optimal technical scheme in many technological schemes that the utility model provides can produce refer to hereafter sets forth.
For achieving the above object, the utility model provides following technological scheme:
The valving that the utility model embodiment provides, comprises valve body, valve seat and seal arrangement, wherein: described seal arrangement is arranged between described valve body and described valve seat;
Described valve body moves to close valve position or move to from valve opening position when convergence closes valve position and described seal arrangement can be driven to make the seal element of described seal arrangement move to the sealing station compressed mutually with described valve body; And/or described valve body can drive described seal arrangement maybe can remove the connection of described valve body and described seal arrangement when pass valve position moves toward valve opening position, makes the described seal element compressed mutually with described valve body throw off described valve body.
As the further optimization of arbitrary technological scheme that the utility model provides above or hereinafter, described seal arrangement comprises driving mechanism and described seal element, and described driving mechanism is leverage.
As the further optimization of arbitrary technological scheme that the utility model provides above or hereinafter, described driving mechanism comprises clamping lever, described clamping lever comprises first end, the second end and the stage casing part between described first end and described second end, wherein:
Described first end is connected with described seal element, described stage casing part and described valve seat are rotationally connected, and second end that can compress described clamping lever when described valve body moves to described pass valve position drives described seal element to move to described sealing station to make described first end.
As the further optimization of arbitrary technological scheme that the utility model provides above or hereinafter, described driving mechanism comprises at least two described clamping levers, the described center section part of clamping lever described at least one is divided into the rotating shaft be rotationally connected with described valve seat, and described first end and described second end are the rod member or plate that are fixedly connected with described rotating shaft separately.
As the further optimization of arbitrary technological scheme that the utility model provides above or hereinafter, described center section part is divided into the described seal element that the described clamping lever of described rotating shaft connects to be positioned at the side of valve body, when described valve body moves to described pass valve position, the sidepiece end face of described seal element and described valve body abuts against.
As the further optimization of arbitrary technological scheme that the utility model provides above or hereinafter, described seal element is rubber gasket.
As the further optimization of arbitrary technological scheme that the utility model provides above or hereinafter, described driving mechanism comprises at least two described clamping levers, and clamping lever described at least one is U-shaped bar, and described U-shaped bar is rotationally connected by coupling shaft and described valve seat.
As the further optimization of arbitrary technological scheme that the utility model provides above or hereinafter, the described seal element be connected with described U-shaped bar is located at side, front or the side, the back side of described valve body, when described valve body moves to described pass valve position, front or the back side of described seal element and described valve body abut against.
As the further optimization of arbitrary technological scheme that the utility model provides above or hereinafter, mounting groove is provided with in described valve seat, described seal element is connected with the inwall liquid sealing of described mounting groove, described valve body moves to from described valve opening position when to close valve position described in convergence or move to described pass valve position and described seal element can be made in described mounting groove to slide into described sealing station, and described valve body can make described seal element throw off described valve body from described pass valve position and slide back to described mounting groove when described valve opening position is moved.
As the further optimization of arbitrary technological scheme that the utility model provides above or hereinafter, described valve body is provided with trigger component, and described valve body moves to described trigger component when to close valve position described in convergence or move to described pass valve position and described seal arrangement can be driven to run from described valve opening position.
As the further optimization of arbitrary technological scheme that the utility model provides above or hereinafter, described trigger component is the domatic or driveshaft be arranged on described valve body.
The gate valve that the utility model embodiment provides, comprises the valving that the arbitrary technological scheme of the utility model provides, and wherein: described valve body is gate sheet, described valve seat is the framework of gate valve.
The sludge treating system that the utility model embodiment provides, comprises the gate valve that the arbitrary technological scheme of the utility model provides.
Based on technique scheme, the utility model embodiment at least can produce following technique effect: due in the valving that the utility model provides, and valve body (being preferably gate sheet) moves to close valve position or move to from valve opening position when convergence closes valve position and seal arrangement can be driven to make the seal element of seal arrangement move to the sealing station compressed mutually with valve body; Thus avoid valve body, in the valve process of pass, wearing and tearing are caused to seal element, seal arrangement can be driven maybe to remove the connection with seal arrangement when valve body moves from pass valve position toward valve opening position, seal element is made to throw off valve body, thus avoid valve body, in valve opening process, wearing and tearing are caused to seal element, to sum up, the utility model is implemented valve body and seal element all can be avoided to cause wearing and tearing, so solve prior art to there is seal element technical problem easy to wear when closing valve and/or valve opening action at valve body.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the stereochemical structure of gate valve in prior art;
Fig. 2 is the enlarged diagram in A cross section on gate valve shown in Fig. 1;
Fig. 3 is the enlarged diagram in B cross section on gate valve shown in Fig. 1;
The schematic diagram of the stereochemical structure of the gate valve that Fig. 4 provides for the utility model embodiment;
Fig. 5 is the enlarged diagram in C cross section on gate valve shown in Fig. 4;
Fig. 6 is the enlarged diagram in D cross section on gate valve shown in Fig. 4;
Reference character: 1, valve body; 2, valve seat; 21, upper bracket; 22, lower support frame; 3, seal arrangement; 31, seal element; 32, clamping lever; 321, first end; 322, the second end; 323, stage casing part; 33, mounting groove; 41, domatic; 42, driveshaft; 51, oil cylinder; 52, gate sheet; 53, guiding groove; 54, upper bracket; 55, lower support frame; 56, nylon pad; 57, rubber gasket; A, cross section; B, cross section; C, cross section; D, cross section.
Embodiment
Content of the present utility model and the distinctive points between the utility model and prior art can be understood below with reference to accompanying drawing Fig. 1 ~ Fig. 6 and word content.Hereafter by accompanying drawing and the mode enumerating embodiment more of the present utility model, the technical solution of the utility model (comprising optimal technical scheme) is described in further detail.It should be noted that: any technical characteristics in the present embodiment, any technological scheme is all one or more in the technical characteristics of plurality of optional or optional technological scheme, cannot exhaustive all alternative technical characteristicss of the present utility model and alternative technological scheme in order to describe succinct to need in presents, also the mode of execution being not easy to each technical characteristics all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: arbitrary technological means that the utility model can be provided carries out two or more technological means any of replacing or being provided by the utility model or technical characteristics carries out mutually combining and obtaining new technological scheme.Any technical characteristics in the present embodiment and any technological scheme all do not limit protection domain of the present utility model, protection domain of the present utility model should comprise those skilled in the art do not pay creative work thinkable any alternate embodiments and those skilled in the art two or more technological means any that the utility model is provided or the technical characteristics new technological scheme carrying out mutually combining and obtain.
The utility model embodiment provides the nonabradable valving of a kind of seal element, arranges the gate valve of this valving and arrange the sludge treating system of this gate valve.
Below in conjunction with the elaboration that Fig. 1 ~ Fig. 6 carries out specifically to the technological scheme that the utility model provides.
As shown in Fig. 4 ~ Fig. 6, the valving that the utility model embodiment provides, comprises valve body 1 (being preferably gate sheet), valve seat 2 (being preferably the framework be formed by connecting by upper bracket 21 and lower support frame 22) and seal arrangement 3, wherein:
Valve body 1 is flexibly connected with valve seat 2, the formation fluid passage, gap between valve seat 2 and valve body 1, and valve body 1 can move to the pass valve position of closing fluid passage and the valve opening position of opening fluid passage; Seal arrangement 3 is arranged between valve body 1 and valve seat 2;
Valve body 1 moves to close valve position or move to from valve opening position when convergence closes valve position and seal arrangement 3 can be driven to make the seal element 31 (surface that seal element 31 and valve body 1 abut against is provided with sawtooth or fin) of seal arrangement 3 move to the sealing station compressed mutually with valve body 1; And/or valve body 1 can drive seal arrangement 3 maybe can remove the connection with seal arrangement 3 from pass valve position when valve opening position is moved, makes the seal element 31 compressed mutually with valve body 1 throw off valve body 1.
Due in the valving that the utility model provides, valve body 1 (being preferably gate sheet) moves to close valve position or move to from valve opening position when convergence closes valve position and seal arrangement 3 can be driven to make the seal element 31 of seal arrangement 3 move to the sealing station compressed mutually with valve body 1; Thus avoid valve body 1, in the valve process of pass, wearing and tearing are caused to seal element 31, seal arrangement 3 can be driven maybe to remove the connection with seal arrangement 3 when valve body 1 moves from pass valve position toward valve opening position, seal element 31 is made to throw off valve body 1, thus avoid valve body 1, in valve opening process, wearing and tearing are caused to seal element 31, to sum up, the utility model is implemented all to avoid valve body 1 and seal element 31 to cause wearing and tearing when closing valve and/or valve opening action at valve body 1.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, seal arrangement 3 comprises driving mechanism and seal element 31, and driving mechanism is leverage.It is simple that leverage has structure, is convenient to the advantage of loading and unloading, keeping in repair.Certainly, other driving mechanisms (such as gear drive, chain drive, belt gear) outside leverage are all within protection domain of the present utility model.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, driving mechanism comprises clamping lever 32, clamping lever 32 comprises first end 321, second end 322 and the stage casing part 323 between first end 321 and the second end 322, wherein: first end 321 is connected with seal element 31, stage casing part 323 and valve seat 2 are rotationally connected, and valve body 1 moves to second end 322 that can compress clamping lever 32 when closing valve position and is with moving sealing element 31 to move to sealing station to make first end 321.Its pressure coming from valve body 1 wherein suffered by one end can be converted to by its other end impacting force, the sealing force that seal element 31 pairs of valve bodies 1 apply by clamping lever 32, thus achieves the interlock of seal element 31 and valve body 1.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, driving mechanism comprises at least two clamping levers 32, the stage casing part 323 of at least one clamping lever 32 is the rotating shaft be rotationally connected with valve seat 2, and first end 321 is with the second end 322 rod member or plate that are fixedly connected with rotating shaft separately.The schematic diagram in the cross section of D shown in Fig. 6 illustrates the structure of above-mentioned clamping lever 32.It is simple that this structure not only has structure, is convenient to the advantage of assembling, and first end 321 and the second end 322 are spaced valve seat 2 between the two, and respective installing space is larger.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, stage casing part 323 is the side that the seal element 31 that the clamping lever 32 of rotating shaft connects is positioned at valve body 1, when valve body 1 moves to and closes valve position, seal element 31 abuts against with the sidepiece end face of valve body 1.
Side and the upper bracket of static nylon pad sealed gate plate is used in prior art, gap between lower support frame, nylon pad has sealing and the effect reducing to rub concurrently, very large for guaranteeing the impacting force that sealing effect nylon pad applies gate sheet, so nylon pad is easy to wearing and tearing, the utility model uses clamping lever 32 to drive seal element 31 to realize sealing, can not rub between seal element 31 and valve body 1, not easy to wear, so the seal element 31 that the material without the need to using wear resistance good makes, only use the better seal element 31 of elasticity can meet the requirement of sealing.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, seal element 31 is rubber gasket.Use rubber gasket to not only increase sealing effect, and rubber gasket is with low cost, is convenient to processing, manufactures.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, driving mechanism comprises at least two clamping levers 32, and at least one clamping lever 32 is U-shaped bar, and U-shaped bar is rotationally connected by coupling shaft and valve seat 2.The schematic diagram in the cross section of C shown in Fig. 5 illustrates the structure of above-mentioned clamping lever 32.U-shaped bar can make full use of the space of valve body 1 wherein side, and makes full use of the abutting power that this side of valve body 1 applies U-shaped bar, realizes utilizing seal element 31 to the sealing in gap between the valve body 1 of this side and valve seat 2.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, the seal element 31 be connected with U-shaped bar is located at side, front or the side, the back side of valve body 1, when valve body 1 moves to and closes valve position, front or the back side of seal element 31 and valve body 1 abut against.Said structure can by the front of valve body 1 or between the back side and valve seat 2 gap carry out reliable sealing.The first end 321 of U-shaped bar is provided with fillet, chamfering, or, the first end 321 of U-shaped bar is spherical or cylindric, and the stress produced when the first end 321 that this structure can reduce U-shaped bar occurs to clash into valve body 1 is concentrated, so contribute to the reliability of raising clamping lever 32 and valve body 1.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, mounting groove 33 is provided with in valve seat 2, seal element 31 is connected with the inwall liquid sealing of mounting groove 33, valve body 1 moves to from valve opening position when convergence closes valve position or moves to pass valve position and seal element 31 can be made in mounting groove 33 to slide into sealing station, and valve body 1 can make seal element 31 throw off valve body 1 from pass valve position and slide back to mounting groove 33 when valve opening position is moved.Mounting groove 33 not only has protection, spacing and leading role to seal element 31, and contributes to the sealing effect improving seal element 31 setting position.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, valve body 1 is provided with trigger component, valve body 1 moves to trigger component when convergence closes valve position or moves to pass valve position and seal arrangement 3 can be driven to run from valve opening position.The mechanical energy realization that trigger component can utilize valve body 1 to move, to the driving of seal arrangement 3 and control, not only takes full advantage of the kinetic energy of valve body 1, and achieves the interlock of valve body 1 and seal arrangement 3.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, trigger component be arranged on valve body 1 domatic 41 (this is domatic be preferably arranged on be fixedly connected on valve body 1 wedge-shaped blocks on) or driveshaft 42.In said structure domatic 41 expands the connection area of trigger component and seal arrangement 3, and contribute to the reliability improving trigger action, driveshaft 42 structure is simple, saves material, is convenient to processing, manufactures.
As the Alternate embodiments of the arbitrary technological scheme of the utility model, the second end 322 is tabular, and it is fixedly connected with seal element 31.Second end 322 of tabular is comparatively large with seal element 31 connection area, and it is more firm to connect.
The gate valve that the utility model embodiment provides, comprises the valving that the arbitrary technological scheme of the utility model provides, and wherein: valve body 1 is gate sheet, valve seat 2 is the framework of gate valve.Gate valve is suitable for applying the utility model to improve reliability and the working life of seal element 31.
The sludge treating system that the utility model embodiment provides, comprises the gate valve that the arbitrary technological scheme of the utility model provides.In the sewage of sludge treating system process, sand content is comparatively large, is suitable for applying the utility model to improve the reliability of its seal element 31 and even seal arrangement 3, and then guarantees efficiency reliable and constant of sewage treatment.
Above-mentioned arbitrary technological scheme disclosed in the utility model unless otherwise stated, if the number range of it discloses, so disclosed number range is preferred number range, anyly it should be appreciated by those skilled in the art: preferred number range is only the numerical value that in many enforceable numerical value, technique effect is obvious or representative.Because numerical value is more, cannot be exhaustive, so the utility model just discloses component values to illustrate the technical solution of the utility model, and the above-mentioned numerical value enumerated should not form restriction the utility model being created to protection domain.
If employ the word such as " first ", " second " herein to limit component, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe carry out difference as not having outside Stated otherwise to component, the implication that above-mentioned word is not special.
Simultaneously, if above-mentioned the utility model discloses or relate to component or the structural member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can releasably be fixedly connected with (such as using bolt or screw to connect), also can be understood as: to be non-removablely fixedly connected with (such as rivet, weld), certainly, connection fastened to each other also can be replaced by integral type structure (such as use casting technique is integrally formed create) (obviously cannot adopt except integrally formed technique).In addition, apply in arbitrary technological scheme disclosed in above-mentioned the utility model for represent position relationship or shape term unless otherwise stated its implication comprise approximate with it, similar or close state or shape.Arbitrary parts that the utility model provides both can be assembled by multiple independent constituent element, and also can be one of the forming manufacture technics separate part out.If employ term " " center " in description of the present utility model, " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward " etc., orientation or the position relationship of so above-mentioned term instruction are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the gate valve of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the utility model protection domain can not be interpreted as.Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technological scheme scope of the utility model request protection.
Claims (13)
1. a valving, is characterized in that, comprises valve body, valve seat and seal arrangement, wherein:
Described seal arrangement is arranged between described valve body and described valve seat;
Described valve body moves to close valve position or move to from valve opening position when convergence closes valve position and described seal arrangement can be driven to make the seal element of described seal arrangement move to the sealing station compressed mutually with described valve body; And/or described valve body can drive described seal arrangement maybe can remove the connection of described valve body and described seal arrangement when pass valve position moves toward valve opening position, makes the described seal element compressed mutually with described valve body throw off described valve body.
2. valving according to claim 1, is characterized in that, described seal arrangement comprises driving mechanism and described seal element, and described driving mechanism is leverage.
3. valving according to claim 2, is characterized in that, described driving mechanism comprises clamping lever, and described clamping lever comprises first end, the second end and the stage casing part between described first end and described second end, wherein:
Described first end is connected with described seal element, described stage casing part and described valve seat are rotationally connected, and second end that can compress described clamping lever when described valve body moves to described pass valve position drives described seal element to move to described sealing station to make described first end.
4. valving according to claim 3, it is characterized in that, described driving mechanism comprises at least two described clamping levers, the described center section part of clamping lever described at least one is divided into the rotating shaft be rotationally connected with described valve seat, and described first end and described second end are the rod member or plate that are fixedly connected with described rotating shaft separately.
5. valving according to claim 4, it is characterized in that, described center section part is divided into the described seal element that the described clamping lever of described rotating shaft connects to be positioned at the side of valve body, when described valve body moves to described pass valve position, the sidepiece end face of described seal element and described valve body abuts against.
6. valving according to claim 5, is characterized in that, described seal element is rubber gasket.
7., according to the arbitrary described valving of claim 3-6, it is characterized in that, described driving mechanism comprises at least two described clamping levers, and clamping lever described at least one is U-shaped bar, and described U-shaped bar is rotationally connected by coupling shaft and described valve seat.
8. valving according to claim 7, it is characterized in that, the described seal element be connected with described U-shaped bar is located at side, front or the side, the back side of described valve body, when described valve body moves to described pass valve position, front or the back side of described seal element and described valve body abut against.
9. valving according to claim 1, it is characterized in that, mounting groove is provided with in described valve seat, described seal element is connected with the inwall liquid sealing of described mounting groove, described valve body moves to from described valve opening position when to close valve position described in convergence or move to described pass valve position and described seal element can be made in described mounting groove to slide into described sealing station, and described valve body can make described seal element throw off described valve body from described pass valve position and slide back to described mounting groove when described valve opening position is moved.
10. valving according to claim 1, it is characterized in that, described valve body is provided with trigger component, and described valve body moves to described trigger component when to close valve position described in convergence or move to described pass valve position and described seal arrangement can be driven to run from described valve opening position.
11. valvings according to claim 10, is characterized in that, described trigger component is the domatic or driveshaft be arranged on described valve body.
12. 1 kinds of gate valves, is characterized in that, comprise the arbitrary described valving of claim 1-11, wherein: described valve body is gate sheet, described valve seat is the framework of gate valve.
13. 1 kinds of sludge treating systems, is characterized in that, comprise gate valve according to claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520379183.2U CN204805590U (en) | 2015-06-05 | 2015-06-05 | Valving, slide valve and sludge treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520379183.2U CN204805590U (en) | 2015-06-05 | 2015-06-05 | Valving, slide valve and sludge treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805590U true CN204805590U (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520379183.2U Active CN204805590U (en) | 2015-06-05 | 2015-06-05 | Valving, slide valve and sludge treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204805590U (en) |
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2015
- 2015-06-05 CN CN201520379183.2U patent/CN204805590U/en active Active
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