Bypass valve welding structure

Abstract

The utility model discloses a bypass valve welding structure which solves the problem that in the prior art, the welding position of a valve plate and a valve shaft is prone to falling off in the using process. The bypass valve comprises a valve plate arranged in the bypass valve, a valve shaft arranged in the valve plate, a pair of limiting mechanisms arranged between the valve plate and the valve shaft, and soldering paste A arranged between the valve plate and the valve shaft, the two limiting mechanisms are distributed in a spaced mode, and the soldering paste A is located between the pair of limiting mechanisms. The valve plate is arranged in the bypass valve, the valve shaft is arranged in the valve plate, the limiting mechanism is arranged between the valve plate and the valve shaft, and the position of the valve shaft in the valve plate can be conveniently limited through the limiting mechanism, so that the welding error of the valve plate and the valve shaft is reduced; and meanwhile, the molten soldering paste A can be blocked by the limiting mechanism, so that the position between the valve plate and the valve shaft can be filled with the soldering paste A, and the welding strength of the valve plate and the valve shaft is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bypass valves, and particularly relates to a bypass valve welding structure. Background Art

[0002] The cooler bypass valve is a key component in the automotive engine's EGR system (exhaust gas recirculation system), playing a vital role in ensuring emissions compliance and reducing fuel consumption. When the engine's water temperature is low, the cooler bypass valve redirects exhaust gas around the cooler and directly into the intake manifold through the EGR valve, rapidly raising engine temperature and reducing engine friction. When the engine's water temperature reaches normal, the exhaust gas passes through the bypass valve and cools the cooler, lowering the engine's combustion temperature, thereby reducing nitrogen oxide (NOx) formation and reducing exhaust emissions.

[0003] Typically, the valve plate assembly of a cooler bypass valve is made of stainless steel, and argon arc welding or laser welding is generally used to secure the valve plate and valve shaft. When using argon arc welding or laser welding to weld the valve plate and valve shaft, the temperature difference between the welding area of ​​the valve plate and valve shaft and the temperature of the rest of the valve plate and valve shaft is large, and the melted solder paste A has poor fluidity during welding, resulting in a thin weld thickness between the valve plate and valve shaft. This can cause the weld between the valve plate and valve shaft to fall off during use of the bypass valve. Furthermore, the valve plate and valve shaft are typically welded directly by placing the valve shaft inside the valve plate. This can result in large welding errors between the valve plate and valve shaft, affecting the use of the bypass valve. Utility Model Content

[0004] The utility model provides a bypass valve welding structure to at least solve some of the above technical problems.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A bypass valve welding structure includes a valve plate arranged in the bypass valve and a valve shaft arranged in the valve plate, a pair of limiting mechanisms arranged between the valve plate and the valve shaft, and solder paste A arranged between the valve plate and the valve shaft; the two limiting mechanisms are distributed at intervals, and the solder paste A is also located between the pair of limiting mechanisms.

[0007] Furthermore, the limiting mechanism is distributed around the valve shaft, and the limiting mechanism includes a limiting ring plate A provided on the inner wall of the valve plate, a limiting ring plate B provided on the outer wall of the valve shaft and adapted to the limiting ring plate A, and a fixed structure provided between the limiting ring plate A and the limiting ring plate B.

[0008] Further, the limiting ring plate A and the limiting ring plate B are mutually butted, the fixing structure is located at the butt joint part, and the fixing structure comprises a solder paste accommodating groove A arranged on the limiting ring plate B and a solder paste B arranged between the limiting ring plate A and the limiting ring plate B and located in the solder paste accommodating groove A.

[0009] Further, the solder paste A and the solder paste B are both nickel-based solder paste A.

[0010] Further, a plurality of solder paste accommodating grooves B are arranged on the outer wall of the valve shaft and located between the two limiting mechanisms.

[0011] Further, the solder paste accommodating grooves B are in V-shaped structures.

[0012] Further, the solder paste accommodating grooves B are distributed around the outer wall of the valve shaft for one circle, the number of the solder paste accommodating grooves B on the outer wall of the valve shaft is not less than three, and the solder paste accommodating grooves B are equidistantly distributed.

[0013] Further, a connecting hole matched with the valve shaft is arranged in the valve plate, and the valve shaft is fixed in the connecting hole.

[0014] Compared with the prior art, the utility model has the advantages of the following:

[0015] The utility model discloses simple structure, scientific and reasonable in design, convenient to use, the utility model discloses a valve plate is arranged in the bypass valve, the valve shaft is arranged in the valve plate, and the limiting mechanism is arranged between the valve plate and the valve shaft, and the position of the valve shaft in the valve plate can be limited through the limiting mechanism, thereby reducing the welding error of the valve plate and the valve shaft, and the limiting mechanism can block the melted solder paste A, so that the solder paste A can be filled between the valve plate and the valve shaft, thereby improving the welding strength of the valve plate and the valve shaft. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is Figure 1 It is an enlarged view of the position A in the figure.

[0018] Figure 3 It is a schematic diagram of the valve plate of the utility model.

[0019] Figure 4 It is a schematic diagram of the valve shaft of the utility model.

[0020] Figure 5 It is Figure 4 It is an enlarged view of the position B in the figure.

[0021] Among them, the name corresponding to the reference sign is:

[0022] 1. Valve plate; 2. Valve shaft; 3. Solder paste A; 4. Limit ring plate A; 5. Limit ring plate B; 6. Solder paste receiving groove A; 7. Solder paste B; 8. Solder paste receiving groove B; 9. Connection hole. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described herein are merely a portion of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; of course, they can also refer to mechanical connections or electrical connections; in addition, they can also refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0026] Example 1.

[0027] like Figures 1-5 As shown, the utility model provides a bypass valve welding structure, including a valve plate 1 arranged in the bypass valve and a valve shaft 2 arranged in the valve plate 1, and also including a pair of limiting mechanisms arranged between the valve plate 1 and the valve shaft 2, and soldering paste A3 arranged between the valve plate 1 and the valve shaft 2; the two limiting mechanisms are distributed at intervals, and the soldering paste A3 is also located between the pair of limiting mechanisms.

[0028] The utility model discloses a valve plate 1 sets up in the bypass valve, valve shaft 2 sets up in valve plate 1, two limiting mechanisms set up between valve plate 1 and valve shaft 2, can be convenient for the position of valve shaft 2 in valve plate 1 is limited through two limiting mechanisms, thereby reduce the welding error of valve plate 1 and valve shaft 2, and the welding paste A 3 is located between a pair of limiting mechanisms, can be convenient for valve plate 1 and valve shaft 2 are welded through the welding paste A 3, and limiting mechanism can block the melted welding paste A 3 simultaneously, make the welding paste A 3 can fill between valve plate 1 and valve shaft 2, to this improves the welding strength of valve plate 1 and valve shaft 2.

[0029] The utility model discloses a valve plate 1 and valve shaft 2 when welding, evenly daub the welding paste A 3 on valve shaft 2 outer wall, carry out the butt joint of valve shaft 2 and valve plate 1 and carry out the limiting through limiting mechanism, put into the vacuum brazing furnace and heat up after the butt joint of valve plate 1 and valve shaft 2, when valve plate 1 and valve shaft 2 heat up to 1120 DEG C around, the welding paste A 3 melts, thereby welds valve plate 1 and valve shaft 2, after welding, carry out heat preservation treatment, when the temperature of valve plate 1 and valve shaft 2 reduces to 700 DEG C around, temper valve plate 1 and valve shaft 2, cool after tempering valve plate 1 and valve shaft 2, thereby reduce the probability of the welding defect such as hot crack, deformation, discoloration that easily appears in the welding piece.

[0030] Embodiment 2.

[0031] As Figures 1-5 The utility model discloses a kind of welding structures of bypass valve, including the valve plate 1 in bypass valve and the valve shaft 2 in valve plate 1, further include a pair of limiting mechanisms between valve plate 1 and valve shaft 2, and welding paste A 3 between valve plate 1 and valve shaft 2;Two limiting mechanisms are distributed with interval, and welding paste A 3 is also located between a pair of limiting mechanisms simultaneously.

[0032] Limiting mechanism surrounds valve shaft 2 and is distributed in a circle, limiting mechanism includes the limiting ring plate A 4 on the inner wall of valve plate 1, the limiting ring plate B 5 on the outer wall of valve shaft 2 and being matched with limiting ring plate A 4, and fixed structure between limiting ring plate A 4 and limiting ring plate B 5.

[0033] This embodiment 2 is more preferred structure of limiting mechanism based on embodiment 1, specifically: limiting mechanism surrounds valve shaft 2 and is distributed in a circle, limiting mechanism includes the limiting ring plate A 4 on the inner wall of valve plate 1, the limiting ring plate B 5 on the outer wall of valve shaft 2 and being matched with limiting ring plate A 4, and fixed structure between limiting ring plate A 4 and limiting ring plate B 5.

[0034] The utility model discloses a limit mechanism surrounds valve shaft 2 and distributes in a week, in order to carry out positioning when the valve plate 1 and valve shaft 2 are welded, limit ring plate A4 is arranged on the inner wall of valve plate 1, and limit ring plate B5 is arranged on the outer wall of valve shaft 2, and when the valve plate 1 and valve shaft 2 are welded, limit ring plate A4 is respectively abutted with corresponding limit ring plate B5, and simultaneously fixed structure is arranged between limit ring plate A4 and limit ring plate B5, and fixed structure can further fix the valve plate 1 and valve shaft 2, to avoid the phenomenon that the valve plate 1 and valve shaft 2 fall off in the use process.

[0035] Example 3.

[0036] As Figures 1-5 The utility model provides a bypass valve welding structure, including the valve plate 1 of being located in the bypass valve and the valve shaft 2 of being located in the valve plate 1, still including a pair of limit mechanism between the valve plate 1 and valve shaft 2 and the welding cream A3 between the valve plate 1 and valve shaft 2, two limit mechanism interval distribution, and the welding cream A3 is also located between a pair of limit mechanism.

[0037] Limit mechanism surrounds valve shaft 2 and distributes in a week, and limit mechanism includes limit ring plate A4 being located on the inner wall of valve plate 1, limit ring plate B5 being located on the outer wall of valve shaft 2 and being matched with limit ring plate A4 and fixed structure being located between limit ring plate A4 and limit ring plate B5.

[0038] Limit ring plate A4 and limit ring plate B5 butt joint each other, and fixed structure is located at the butt joint part, and fixed structure includes welding cream accommodating groove A6 being located on limit ring plate B5 and welding cream B7 being located between limit ring plate A4 and limit ring plate B5 and being located in welding cream accommodating groove A6.

[0039] The utility model discloses a limit mechanism surrounds valve shaft 2 and distributes in a week, in order to carry out positioning when the valve plate 1 and valve shaft 2 are welded, limit ring plate A4 is arranged on the inner wall of valve plate 1, and limit ring plate B5 is arranged on the outer wall of valve shaft 2, and when the valve plate 1 and valve shaft 2 are welded, limit ring plate A4 is respectively abutted with corresponding limit ring plate B5, and simultaneously fixed structure is arranged between limit ring plate A4 and limit ring plate B5, and fixed structure can further fix the valve plate 1 and valve shaft 2, to avoid the phenomenon that the valve plate 1 and valve shaft 2 fall off in the use process.

[0040] The utility model discloses a welding cream accommodating groove A6 is set up on the end of limit ring plate B5, and welding cream B7 is equipped in welding cream accommodating groove A6, and welding cream B7 is located between limit ring plate A4 and limit ring plate B5, when the valve plate 1 and valve shaft 2 are welded, and welding cream B7 in welding cream accommodating groove A6 will melt synchronously with welding cream A3 between the valve plate 1 and valve shaft 2, and after melting, welding cream B7 can weld limit ring plate B5 and limit ring plate A4, to further improve the welding strength of valve plate 1 and valve shaft 2.

[0041] The utility model discloses limit ring plate A4 and limit ring plate B5 are annular structure, and the limit ring plate A4 and limit ring plate B5 of annular structure can conveniently abut to limit ring plate A4 and limit ring plate B5, can conveniently simultaneously soldering paste B7 is to limit ring plate A4 and limit ring plate B5 is welded, thereby improves the welding strength of valve shaft 2 and valve shaft 2.

[0042] Example 4.

[0043] As Figures 1-5 The utility model provides a kind of by-pass valve welding structure, including the valve plate 1 being located in by-pass valve and the valve shaft 2 being located in valve plate 1, further include a pair of limiting mechanism between valve plate 1 and valve shaft 2, and soldering paste A3 between valve plate 1 and valve shaft 2;Two limiting mechanisms are distributed with interval, and soldering paste A3 is also located between a pair of limiting mechanism simultaneously.

[0044] Limiting mechanism surrounds valve shaft 2 and is distributed in a circle, and limiting mechanism includes limit ring plate A4 on the inner wall of valve plate 1, limit ring plate B5 on the outer wall of valve shaft 2 and adapted with limit ring plate A4, and fixed structure between limit ring plate A4 and limit ring plate B5.

[0045] Fixed structure includes soldering paste containing groove A6 on the end of limit ring plate B5, and soldering paste B7 in soldering paste containing groove A6.

[0046] Soldering paste A3 and soldering paste B7 are all nickel-based soldering paste A3.

[0047] This embodiment 4 is more preferred structure of soldering paste A3 and soldering paste B7 on the basis of embodiment 3, specifically: soldering paste A3 and soldering paste B7 are all nickel-based soldering paste A3.

[0048] The utility model soldering paste A3 and soldering paste B7 are all nickel-based soldering paste A3, and nickel-based soldering paste A3 has high welding strength and good corrosion resistance, and simultaneously, the valve shaft 2 in valve plate 1 has good strength and corrosion resistance at welding position, can satisfy the demand under high temperature environment.

[0049] Example 5.

[0050] As Figures 1-5 The utility model provides a kind of by-pass valve welding structure, including the valve plate 1 being located in by-pass valve and the valve shaft 2 being located in valve plate 1, further include a pair of limiting mechanism between valve plate 1 and valve shaft 2, and soldering paste A3 between valve plate 1 and valve shaft 2;Two limiting mechanisms are distributed with interval, and soldering paste A3 is also located between a pair of limiting mechanism simultaneously.

[0051] Valve shaft 2 outer wall is equipped with a plurality of soldering paste containing groove B8 between two limiting mechanisms.

[0052] The embodiment 6 gives more preferred structure of the valve shaft 2 on the basis of the embodiment 1, specifically, a plurality of solder paste containing grooves B8 are arranged on the outer wall of the valve shaft 2 between the two limiting mechanisms.

[0053] The solder paste containing groove B8 is arranged on the outer wall of the valve shaft 2, the solder paste containing groove B8 is preferably four, the solder paste containing groove A6B can facilitate the flow of the melted solder paste A3, so that the melted solder paste A3 can be attached between the valve plate 1 and the valve shaft 2, thereby improving the welding stability of the valve plate 1 and the valve shaft 2.

[0054] Embodiment 6.

[0055] As shown in the figure, the utility model provides a bypass valve welding structure, including being located in the valve plate 1 of bypass valve and being located in the valve shaft 2 of valve plate 1, still including being located between a pair of limiting mechanism of valve plate 1 and valve shaft 2 and being located between the solder paste A3 of valve plate 1 and valve shaft 2. Figures 1-5 Two limiting mechanisms are distributed at intervals, and the solder paste A3 is also located between the pair of limiting mechanisms.

[0056] A plurality of solder paste containing grooves B8 are arranged on the outer wall of the valve shaft 2 in the limiting mechanism.

[0057] The solder paste containing groove B8 is V-shaped structure.

[0058] The embodiment 6 gives more preferred structure of the solder paste containing groove A6 on the basis of the embodiment 5, specifically, the solder paste containing groove B8 is V-shaped structure.

[0059] The solder paste containing groove B8 of the utility model V-shaped structure can facilitate the flow of the melted solder paste A3, thereby providing the welding stability of the valve plate 1 and the valve shaft 2.

[0060] Embodiment 7.

[0061] As shown in the figure, the utility model provides a bypass valve welding structure, including being located in the valve plate 1 of bypass valve and being located in the valve shaft 2 of valve plate 1, still including being located between a pair of limiting mechanism of valve plate 1 and valve shaft 2 and being located between the solder paste A3 of valve plate 1 and valve shaft 2. Figures 1-5 Two limiting mechanisms are distributed at intervals, and the solder paste A3 is also located between the pair of limiting mechanisms.

[0062] A plurality of solder paste containing grooves B8 are arranged on the outer wall of the valve shaft 2 between the two limiting mechanisms.

[0063] The solder paste containing groove B8 is distributed around the outer wall of the valve shaft 2, the number of the solder paste containing groove B8 on the outer wall of the valve shaft 2 is not less than three, and the solder paste containing groove B8 is equidistantly distributed.

[0064] The embodiment 7 gives more preferred structure of the solder paste containing groove B8 based on the embodiment 5, specifically, the solder paste containing groove B8 is distributed around the outer wall of the valve shaft 2, the number of the solder paste containing groove B8 on the outer wall of the valve shaft 2 is not less than three, and the solder paste containing groove B8 is equidistantly distributed.

[0065] The solder paste containing groove B8 is preferably four, and the solder paste containing groove B8 is distributed around the outer wall of the valve shaft 2, and the solder paste containing groove B8 is equidistantly distributed, so that the solder paste A3 is facilitated to flow, so as to improve the welding strength of the valve shaft 2 and the valve plate 1.

[0066] Embodiment 8.

[0067] As shown in the embodiment 8, the utility model discloses a bypass valve welding structure, which comprises a valve plate 1 arranged in a bypass valve and a valve shaft 2 arranged in the valve plate 1, a pair of limiting mechanisms arranged between the valve plate 1 and the valve shaft 2, and a solder paste A3 arranged between the valve plate 1 and the valve shaft 2. Figures 1-5 The valve plate 1 is provided with a connecting hole 9 matched with the valve shaft 2, and the valve shaft 2 is fixed in the connecting hole 9.

[0068] The embodiment 8 gives more preferred structure of the valve plate 1 based on the embodiment 1, specifically, the valve plate 1 is provided with a connecting hole 9 matched with the valve shaft 2, and the valve shaft 2 is fixed in the connecting hole 9.

[0069] The connecting hole 9 is arranged on the valve plate 1, and the connecting hole 9 is a conical structure, the limiting ring plate A4 is arranged in the connecting hole 9, the conical connecting hole 9 can guide the valve shaft 2 during installation, and the solder paste A3 on the valve shaft 2 can flow after melting, so as to improve the welding quality of the valve shaft 2 and the valve plate 1.

[0070]

[0071] ​It should be finally pointed out that: the above embodiments are merely the preferred embodiments of the utility model for describing the technical scheme of the utility model, rather than limiting it, of course, it is not the patent range of the utility model; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the range of the technical scheme of the embodiments of the utility model; that is to say, as long as the substantive meaning of the modification or polishing made in the main design idea and spirit of the utility model has no substantive meaning, the technical problem solved is still consistent with the utility model, and should be included in the protection range of the utility model; in addition, the technical scheme of the utility model is directly or indirectly used in other related technical fields, which is also included in the patent protection range of the utility model.

Claims

1. A bypass valve welding structure, comprising a valve plate (1) disposed in the bypass valve and a valve shaft (2) disposed in the valve plate (1), characterized in that: It also includes a pair of limiting mechanisms arranged between the valve plate (1) and the valve shaft (2), and solder paste A (3) arranged between the valve plate (1) and the valve shaft (2); the two limiting mechanisms are spaced apart, and the solder paste A (3) is also located between the pair of limiting mechanisms.

2. A bypass valve welding structure according to claim 1, characterized in that: The limiting mechanism is distributed around the valve shaft (2), and includes a limiting ring plate A (4) provided on the inner wall of the valve plate (1), a limiting ring plate B (5) provided on the outer wall of the valve shaft (2) and adapted to the limiting ring plate A (4), and a fixing structure provided between the limiting ring plate A (4) and the limiting ring plate B (5).

3. A bypass valve welding structure according to claim 2, characterized in that: The limiting ring plate A (4) and the limiting ring plate B (5) are butted against each other, and a fixing structure is located at the butting position. The fixing structure includes a solder paste receiving groove A (6) provided on the limiting ring plate B (5), and solder paste B (7) provided between the limiting ring plate A (4) and the limiting ring plate B (5) and located in the solder paste receiving groove A (6).

4. A bypass valve welding structure according to claim 3, characterized in that: Both solder paste A (3) and solder paste B (7) use nickel-based solder paste A.

5. The bypass valve welding structure according to claim 1, characterized in that: A plurality of solder paste receiving grooves B (8) located between the two limiting mechanisms are provided on the outer wall of the valve shaft (2).

6. A bypass valve welding structure according to claim 5, characterized in that: The solder paste receiving groove B (8) is in a V-shaped structure.

7. The bypass valve welding structure according to claim 5, characterized in that: The solder paste receiving grooves B (8) are distributed around the outer wall of the valve shaft (2). The number of the solder paste receiving grooves B (8) on the outer wall of the valve shaft (2) is not less than three, and the solder paste receiving grooves B (8) are distributed at equal intervals.

8. The bypass valve welding structure according to claim 1, characterized in that: A connecting hole (9) adapted to the valve shaft (2) is provided in the valve plate (1), and the valve shaft (2) is fixed in the connecting hole (9).

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