CN220468103U - QPQ processing device for valve core and valve sleeve surface - Google Patents
QPQ processing device for valve core and valve sleeve surface Download PDFInfo
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- CN220468103U CN220468103U CN202321954846.XU CN202321954846U CN220468103U CN 220468103 U CN220468103 U CN 220468103U CN 202321954846 U CN202321954846 U CN 202321954846U CN 220468103 U CN220468103 U CN 220468103U
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- 238000012545 processing Methods 0.000 title claims description 3
- 238000009413 insulation Methods 0.000 claims abstract description 77
- 238000005121 nitriding Methods 0.000 claims abstract description 57
- 230000001590 oxidative effect Effects 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 2
- 239000003814 drug Substances 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 2
- 238000004381 surface treatment Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of surface treatment, and discloses a QPQ treatment device for the surface of a valve core valve sleeve, which comprises a nitriding furnace, an oxidizing furnace, a first vacuum heat insulation layer and a second vacuum heat insulation layer, wherein the first vacuum heat insulation layer and the second vacuum heat insulation layer are arranged in the nitriding furnace and the oxidizing furnace, the second vacuum heat insulation layer is communicated with the nitriding furnace and the oxidizing furnace, a vacuum pump is used for evacuating the first vacuum heat insulation layer and the second vacuum heat insulation layer, and an oil tank is used for supplying heat conducting oil to the second vacuum heat insulation layer of the nitriding furnace; the first vacuum heat insulation layer and the second vacuum heat insulation layer are in an annular cavity shape along the periphery of the nitriding furnace or the oxidizing furnace, and the first vacuum heat insulation layer is positioned on the opposite outer sides of the second vacuum heat insulation layer. The utility model heats the heat conduction oil pumped into the second vacuum heat insulation layer by utilizing the preheating of the heat conduction oil, pumps the heated heat conduction oil into another furnace to be heated, preheats the heat conduction oil by utilizing the heat dissipation of the heat conduction oil, effectively utilizes the residual temperature, improves the energy utilization rate and saves the energy consumption.
Description
Technical Field
The utility model relates to the technical field of surface treatment, in particular to a QPQ treatment device for the surface of a valve core and a valve sleeve.
Background
The QPQ surface treatment process is a composite surface workpiece surface treatment technology, and is used for treating a workpiece in a nitriding salt bath or an oxidizing salt bath, so that the composite treatment of the nitriding salt bath and the oxidizing salt bath is realized, the physical properties of the workpiece, especially the physical properties under extreme environments, such as important parts of a valve core and a valve sleeve in a valve in the petroleum field, are improved, the environment is poor, and the thermal performance and the corrosion resistance of the valve core and the valve sleeve treated by QPQ can be obviously improved.
The existing nitriding salt bath and oxidizing salt bath are respectively carried out in a nitriding furnace and an oxidizing furnace, and the operation between the nitriding salt bath and the oxidizing salt bath is separated by a certain time sequence, for example, the nitriding furnace and the oxidizing furnace need different time to be heated after the nitriding salt bath is carried out, and the two furnaces are low in energy utilization efficiency due to the fact that the two furnaces are respectively heated, and an effective and recyclable preheating means is lacked, so that the application provides a novel device suitable for QPQ treatment process, and the problems are solved.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides the QPQ treatment device for the valve core and valve sleeve surface, which has the advantages of energy saving, preheating and good heat insulation effect.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a QPQ treatment device for the surface of a valve core and a valve sleeve comprises a nitriding furnace, an oxidizing furnace, a first vacuum heat insulation layer and a second vacuum heat insulation layer which are arranged in the nitriding furnace and the oxidizing furnace,
a second vacuum heat insulation layer used for communicating the nitriding furnace and the oxidizing furnace,
a vacuum pump for evacuating the first vacuum insulation layer and the second vacuum insulation layer,
an oil tank for supplying heat conduction oil into the second vacuum heat insulation layer of the nitriding furnace;
the first vacuum heat insulation layer and the second vacuum heat insulation layer are in an annular cavity shape along the periphery of the nitriding furnace or the oxidizing furnace, and the first vacuum heat insulation layer is positioned on the opposite outer sides of the second vacuum heat insulation layer.
As a preferable technical scheme of the utility model, the top of the second vacuum heat insulation layer is provided with a through-stop valve, the through-stop valve comprises a valve core and a valve sleeve which are mutually matched, the valve core is always supported by an elastic element to be upwards separated from the valve sleeve,
the top end of the valve core is provided with a top support, and the top support is pressed down when the top cover of the furnace is covered to enable the valve core and the valve sleeve to be closed and cut off.
As a preferable technical scheme of the utility model, the elastic element is a spring, a step is arranged on the inner cavity wall of the second vacuum heat insulation layer, a clamping ring is arranged on the outer peripheral surface of the valve core, and the spring is elastically supported between the step and the clamping ring.
As a preferable technical scheme of the utility model, the inner side wall of the valve sleeve and the outer side wall of the valve core are inclined peripheral surfaces with angle adaptation.
As a preferable technical scheme of the utility model, the inclined circumferential surface of the valve sleeve is provided with a sealing rubber layer which is matched with the inclined circumferential surface of the outer side wall of the valve core to form labyrinth seal.
As a preferable technical scheme of the utility model, heaters are arranged at the top and bottom parts of the inner cavity of the nitriding furnace and the oxidizing furnace.
As a preferable technical scheme of the utility model, an oil drain port is arranged at the bottom of the second vacuum heat insulation layer of the oxidation furnace.
As a preferable technical scheme of the utility model, the inner cavities of the nitriding furnace and the oxidizing furnace are respectively provided with a part box, the bottom of the part box consists of a plurality of round rods which are horizontally arranged, and the two adjacent round rods are provided with workpieces to be processed.
As a preferable technical scheme of the utility model, the part box is arranged in the middle of the nitriding furnace and the oxidizing furnace and is positioned between the two heaters.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the nitriding furnace and the oxidizing furnace are combined together, the second vacuum heat insulation layers of the nitriding furnace and the oxidizing furnace are communicated through the valve, the gas in the second vacuum heat insulation layers is pumped out by utilizing the vacuum pump in the early treatment period, after one furnace finishes nitriding or oxidizing, the heat conduction oil pumped into the second vacuum heat insulation layers is heated by utilizing the preheating of the gas, and the heated heat conduction oil is pumped into the other furnace to be heated, so that the heat conduction oil is utilized to radiate heat to preheat the heat conduction oil, the residual temperature is effectively utilized, the energy utilization rate is improved, and the energy consumption is saved.
2. According to the utility model, the through-stop valve is arranged to seal the second vacuum heat insulation layer and conduct the external environment, when the furnace cover is covered, the through-stop valve can be pressed to stop by the pressure of the furnace cover, so that the sealing state in the second vacuum heat insulation layer is kept, and after the oxidation or nitridation reaction is completed, the furnace cover can be uncovered, so that the second vacuum heat insulation layer is conducted with the external environment, and the heat conduction oil in the furnace cover can be smoothly released.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of portion A of FIG. 1 in accordance with the present utility model;
FIG. 3 is a schematic view of portion B of FIG. 1 according to the present utility model.
In the figure: 1. a nitriding furnace; 2. a first vacuum insulation layer; 3. a second vacuum insulation layer; 4. a heater; 5. an oil tank; 6. a furnace cover; 7. a vacuum pump; 8. a valve; 9. an oil drain port; 10. a stop valve; 101. a valve sleeve; 102. a valve core; 103. a top support; 104. a step; 105. a clasp; 106. a spring; 11. a parts box; 111. a round bar; 12. a workpiece to be machined; 13. oxidation furnace
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 3, the present utility model provides a device for QPQ treatment of the surface of a valve core and a valve sleeve, comprising a nitriding furnace 1, an oxidizing furnace 13, and further comprising,
a first vacuum heat insulating layer 2 and a second vacuum heat insulating layer 3 provided in the nitriding furnace 1 and the oxidizing furnace 13,
a second vacuum heat insulating layer 3 for communicating the nitriding furnace 1 and the oxidizing furnace 13,
a vacuum pump 7 for evacuating the first vacuum insulation layer 2 and the second vacuum insulation layer 3,
a tank 5 for supplying heat transfer oil into the second vacuum insulation layer 3 of the nitriding furnace 1;
wherein, the first vacuum heat insulation layer 2 and the second vacuum heat insulation layer 3 are in a ring cavity shape along the periphery of the nitriding furnace 1 or the oxidizing furnace 13, and the first vacuum heat insulation layer 2 is positioned at the opposite outer sides of the second vacuum heat insulation layer 3;
as shown in fig. 1, when the nitriding reaction is performed, the furnace cover 6 is closed, the valve 8 is closed, the second vacuum heat insulation layer 3 in the nitriding furnace 1 is in a vacuum or near-vacuum state, after the nitriding reaction is finished, a communication pipeline between the second vacuum heat insulation layer 3 and the oil tank 5 is conducted, heat conduction oil is pumped into the second vacuum heat insulation layer 3 of the nitriding furnace 1 through negative pressure in the second vacuum heat insulation layer 3, the second vacuum heat insulation layer 3 is used for absorbing heat and reducing the temperature of the nitriding furnace 1, after the temperature of the second vacuum heat insulation layer 3 rises and is balanced, the valve 8 is conducted, the second vacuum heat insulation layer 3 in the vacuum state of the oxidizing furnace 13 is used for pumping the heat conduction oil in the second vacuum heat insulation layer 3 of the nitriding furnace 1, so that the heat conduction oil dissipates in the second vacuum heat insulation layer 3 of the oxidizing furnace 13 to improve the inner cavity temperature of the oxidizing furnace 13, and preheat the heat conduction oil is performed, and therefore energy consumption is saved, and the first vacuum heat insulation layer 2 is arranged outside the second vacuum heat insulation layer 3 to be favorable for reducing heat conduction oil loss outwards of the second vacuum heat insulation layer 3.
Wherein, the top of the second vacuum heat insulation layer 3 is provided with a through-stop valve 10, the through-stop valve 10 comprises a valve core 102 and a valve sleeve 101 which are mutually matched, the valve core 102 always has a trend of upwards separating from the valve sleeve 101 through the support of an elastic element,
the top end of the valve core 102 is provided with a top support 103, and the top support 103 is pressed down when the furnace top cover is covered, so that the valve core 102 and the valve sleeve 101 are closed and cut off;
when the furnace cover 6 is covered and then nitriding or oxidizing reaction is carried out, the through-stop valve 10 is needed to cut off the inner cavity of the auxiliary second vacuum heat insulation layer 3 to carry out vacuumizing, and when the furnace cover 6 is opened, the cut-off state of the through-stop valve 10 is released.
The elastic element is a spring 106, a step 104 is arranged on the inner cavity wall of the second vacuum heat insulation layer 3, a clamping ring 105 is arranged on the outer peripheral surface of the valve core 102, and the spring 106 is elastically supported between the step 104 and the clamping ring 105;
the step 104 is fixed, the snap ring 105 is a stress point on the valve core 102, and when the top of the top support 103 is not pressurized, the valve core 102 and the top support 103 can be integrally supported by the elastic force of the spring 106. Thereby disengaging the valve body 102 from the valve housing 101 and releasing the closed state.
Wherein, the inner side wall of the valve sleeve 101 and the outer side wall of the valve core 102 are inclined circumferential surfaces with angle adaptation;
the angle adaptation, both can laminate furthest, and the cooperation area is great, is favorable to sealing.
Wherein, a sealing rubber layer is arranged on the inclined circumferential surface of the valve sleeve 101 and is matched with the inclined circumferential surface of the outer side wall of the valve core 102 to form labyrinth seal;
as shown in fig. 2, the sealing performance is improved by this means, and when the upper furnace cover 6 is pressed down, the entire top support 103 can be pressed down, and the sealing rubber layer is deformed to be in sufficient contact with the outer wall of the valve body 102, thereby forming a multi-ring labyrinth seal.
Wherein, the top and bottom parts of the inner cavities of the nitriding furnace 1 and the oxidizing furnace 13 are provided with heaters 4;
the heater 4 is used for heating the environment in the furnace, is used for raising the temperature therein, is convenient to reach the temperature condition of nitriding or oxidizing reaction, and keeps the temperature for 10-30min, and is generally about 300-500 ℃.
Wherein, the bottom of the second vacuum heat insulation layer 3 of the oxidation furnace 13 is provided with an oil drain port 9;
the oil drain port 9 is used for draining the heat conduction oil in the second vacuum heat insulation layer 3, so that the space in the second vacuum heat insulation layer 3 is vacated, and the heat insulation performance of the nitriding or oxidizing furnace is recovered conveniently.
Wherein, the inner cavities of the nitriding furnace 1 and the oxidizing furnace 13 are respectively provided with a part box 11, the bottom of the part box 11 consists of a plurality of round rods 111 which are horizontally arranged, and the adjacent two round rods 111 are provided with workpieces 12 to be processed;
the bottom is arranged by round bars 111 equidistance or unequally to form a rail, is applicable to the gap in front of two round bars 111 to hold the focus of the workpiece 12 to be processed, thereby prop up the workpiece 12 to be processed, its cylindricality surface and round bar 111 contact at the global surface, have very little area of contact, conveniently carry out all-round nitridation or oxidation reaction, wherein can also apply the bump of relative small volume at the surface of round bar 111, thereby support the jack-up through a plurality of bumps to be processed 12 and form the point contact with the workpiece 12 to be processed, further reduce area of contact.
Wherein the part box 11 is arranged in the middle of the nitriding furnace 1 and the oxidizing furnace 13 and is positioned between the two heaters 4;
the heater 4 heats the inner cavities of the nitriding furnace 1 and the oxidizing furnace 13, and is provided at the upper and lower positions of the component box 11, respectively, so that the component box 11 and the inner cavities of the nitriding furnace 1 and the oxidizing furnace 13 can be heated uniformly and comprehensively.
The working principle and the using flow of the utility model are as follows:
instructions for expressing techniques or methods of operation;
after the nitriding reaction is finished, a communicating pipeline between the nitriding furnace and the oil tank 5 is conducted, heat conduction oil is pumped into the second vacuum heat insulation layer 3 of the nitriding furnace 1 through vacuum negative pressure in the second vacuum heat insulation layer 3, the second vacuum heat insulation layer 3 is used for absorbing heat and reducing temperature of the nitriding furnace 1, after the temperature of the heat conduction oil rises and is balanced, a valve 8 is conducted, the heat conduction oil in the second vacuum heat insulation layer 3 of the nitriding furnace 1 is pumped by the second vacuum heat insulation layer 3 of the oxidizing furnace 13, and therefore the heat conduction oil dissipates in the second vacuum heat insulation layer 3 of the oxidizing furnace 13 to improve the inner cavity temperature of the oxidizing furnace 13, and the heat conduction oil is preheated.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The QPQ treatment device for the valve core and valve sleeve surface comprises a nitriding furnace (1) and an oxidizing furnace (13), and is characterized in that: also comprises a medicine liquid, and the medicine liquid also comprises,
a first vacuum heat insulation layer (2) and a second vacuum heat insulation layer (3) which are arranged in the nitriding furnace (1) and the oxidizing furnace (13),
a second vacuum heat insulation layer (3) used for communicating the nitriding furnace (1) and the oxidizing furnace (13),
a vacuum pump (7) for evacuating the first vacuum heat-insulating layer (2) and the second vacuum heat-insulating layer (3),
an oil tank (5) for supplying heat transfer oil to the second vacuum heat insulating layer (3) of the nitriding furnace (1);
the first vacuum heat insulation layer (2) and the second vacuum heat insulation layer (3) are in an annular cavity shape along the periphery of the nitriding furnace (1) or the oxidizing furnace (13), and the first vacuum heat insulation layer (2) is positioned on the opposite outer sides of the second vacuum heat insulation layer (3).
2. The valve core and valve housing surface QPQ processor of claim 1 wherein: the top of the second vacuum heat insulation layer (3) is provided with a through-stop valve (10), the through-stop valve (10) comprises a valve core (102) and a valve sleeve (101) which are mutually matched, the valve core (102) is supported by an elastic element and always has a trend of being separated from the valve sleeve (101) upwards,
the top end of the valve core (102) is provided with a top support (103), and the top support (103) is pressed down when the furnace top cover is covered, so that the valve core (102) and the valve sleeve (101) are closed and cut off.
3. The valve core and valve housing surface QPQ processor of claim 2 wherein: the elastic element is a spring (106), a step (104) is formed in the inner cavity wall of the second vacuum heat insulation layer (3), a clamping ring (105) is arranged on the outer circumferential surface of the valve core (102), and the spring (106) is elastically supported between the step (104) and the clamping ring (105).
4. A valve core and valve housing surface qp processing apparatus according to claim 2 or 3, characterized in that: the inner side wall of the valve sleeve (101) and the outer side wall of the valve core (102) are inclined circumferential surfaces with angle adaptation.
5. The valve core and valve housing surface QPQ processor of claim 4 wherein: the inclined circumferential surface of the valve sleeve (101) is provided with a sealing rubber layer which is matched with the inclined circumferential surface of the outer side wall of the valve core (102) to form labyrinth seal.
6. The valve core and valve housing surface QPQ processor of claim 1 wherein: heaters (4) are arranged at the top and bottom parts of the inner cavities of the nitriding furnace (1) and the oxidizing furnace (13).
7. The valve core and valve housing surface QPQ processor of claim 1 wherein: an oil drain port (9) is arranged at the bottom of the second vacuum heat insulation layer (3) of the oxidation furnace (13).
8. The valve core and valve housing surface QPQ processor of claim 1 wherein: the nitriding furnace (1) and the oxidizing furnace (13) are characterized in that a part box (11) is erected in the inner cavities of the nitriding furnace (1) and the oxidizing furnace (13), the bottom of the part box (11) is composed of a plurality of round rods (111) which are horizontally arranged, and workpieces (12) to be machined are erected on two adjacent round rods (111).
9. The valve core and valve housing surface QPQ processor of claim 8 wherein: the part box (11) is arranged in the middle of the nitriding furnace (1) and the oxidizing furnace (13), and is positioned between the two heaters (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321954846.XU CN220468103U (en) | 2023-07-24 | 2023-07-24 | QPQ processing device for valve core and valve sleeve surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321954846.XU CN220468103U (en) | 2023-07-24 | 2023-07-24 | QPQ processing device for valve core and valve sleeve surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220468103U true CN220468103U (en) | 2024-02-09 |
Family
ID=89780736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321954846.XU Active CN220468103U (en) | 2023-07-24 | 2023-07-24 | QPQ processing device for valve core and valve sleeve surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220468103U (en) |
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2023
- 2023-07-24 CN CN202321954846.XU patent/CN220468103U/en active Active
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