Manual valve device and sintering furnace

Abstract

The utility model discloses a manual valve device and a sintering furnace, and belongs to the technical field of sintering equipment, the sintering furnace comprises the manual valve device, and the manual valve device comprises a screw rod, a connector and a valve cover; an air channel extending in the axial direction is formed in the screw rod. One end of the connector is connected with the sintering furnace system, and the other end of the connector is in threaded connection with one end of the screw. The valve cover is in threaded connection with the other end of the screw rod and is provided with an air hole for communicating the inner side of the valve cover with the outside; wherein the valve cover is provided with a valve opening position and a valve closing position by rotating around the screw rod, and at the valve opening position, the air hole is communicated with the air channel; and at the valve closing position, the air hole and the air channel are separated by the screw. According to the manual valve device and the sintering furnace, gas switch control is achieved, the disassembly and assembly convenience is remarkably improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sintering equipment technical field, concretely relates to a manual valve device and sintering furnace. BACKGROUND

[0002] In the application scene of vacuum sintering furnace, due to the relatively low furnace pressure, this characteristic provides the simplified space for the design of manual valve device. However, the widely used manual valve device in the current market generally relies on ball valve to realize switch control and is closely connected with sintering furnace system through matched flange. Although this kind of device meets the use demand to a certain extent, its higher production cost and inconvenience in maintenance become the problem that cannot be ignored. Specifically, the adoption of ball valve and matched flange increases material cost and processing complexity, and once failure occurs, the maintenance process needs to disassemble more components, and the operation is more cumbersome, which influences the overall operation efficiency and maintenance cost of equipment.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] (I) Technical problem solved

[0005] The utility model provides a manual valve device and sintering furnace, at least solves the technical problem: how to reduce production cost and improve the convenience of maintenance.

[0006] (II) Technical scheme

[0007] To solve the above technical problem, the utility model provides the following technical scheme:

[0008] A kind of manual valve device, comprising: screw rod, joint and valve cover;

[0009] The screw rod is internally provided with axially extending air passage;

[0010] The joint one end is connected with sintering furnace system, the other end is connected with the one end of the screw rod with screw thread, and the joint is internally provided with the passage that is communicated sintering furnace system with the air passage;

[0011] The valve cover is connected with the other end of the screw rod with screw thread, and is provided with the air hole that is communicated inside with outside;

[0012] Wherein, the valve cover has valve opening position and valve closing position by rotating around the screw rod, in the valve opening position, the air hole is communicated with the air passage;In the valve closing position, the air hole and air passage are separated by the screw rod.

[0013] In some embodiments, the manual valve device further comprises a first sealing ring arranged between the valve cover and the end of the screw rod, and in the closed valve position, the end of the screw rod is sealed with the valve cover by the first sealing ring to separate the gas hole and the gas channel.

[0014] In some embodiments, the manual valve device further comprises a second sealing ring arranged between the joint and the screw rod to seal the joint and the screw rod.

[0015] In some embodiments, the screw rod is provided with a limiting portion, and the end of the joint connected with the screw rod is in contact with the limiting portion and is provided with the second sealing ring between the limiting portion.

[0016] In some embodiments, the valve cover is provided with a sleeve, and an internal thread is arranged inside the sleeve, the screw rod is provided with an external thread for connecting with the internal thread, and the gas hole is arranged on the side of the sleeve and communicates the inside and outside of the sleeve.

[0017] In some embodiments, the gas hole is provided with at least two and is uniformly distributed along the circumference of the valve cover.

[0018] The utility model also includes a sintering furnace comprising the manual valve device.

[0019] (Three) beneficial effects

[0020] Compared with the prior art, the manual valve device and the sintering furnace provided by the utility model have the following advantages

[0021] Beneficial effects:

[0022] When the manual valve device works, the opening and closing of the gas are controlled by rotating the valve cover. When the valve cover is rotated to the open valve position, the gas hole and the gas channel are communicated, and the gas in the sintering furnace system can smoothly pass through the joint and the screw rod in turn and finally be discharged from the gas hole, meeting the demand of gas control. When the valve cover is rotated to the closed valve position, the gas hole and the gas channel are effectively separated by the screw rod, and the gas flow is completely blocked, realizing the gas on-off control function.

[0023] The manual valve device can improve the convenience of disassembly and assembly: the joint and the screw rod are connected by the threaded connection mode, and the valve cover and the screw rod are connected by the threaded connection mode, compared with the traditional flange connection, not only the connection steps are simplified, but also the convenience of disassembly and assembly is improved, the maintenance time is shortened, and the maintenance cost is reduced.

[0024] The manual valve device can reduce the production cost: by omitting the redundant components such as flange and ball valve, the device realizes the simplification of the structure while maintaining the functional integrity, thereby effectively reducing the production cost and improving the market competitiveness of the product. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A schematic view of the manual valve device connected with the pipeline in the embodiment.

[0026] Figure 2 A front view of the manual valve device in the embodiment.

[0027] Figure 3 A schematic view of the manual valve device in the closed valve position in the embodiment.

[0028] Figure 4 A schematic view of the manual valve device in the open valve position in the embodiment.

[0029] Reference signs:

[0030] Screw rod 1, air passage 11, annular groove 12, limiting part 13;

[0031] Joint 2, channel 21;

[0032] Valve cover 3, air hole 31, sleeve 32;

[0033] First sealing ring 4, second sealing ring 5, pipeline 6. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model.

[0035] In the existing vacuum sintering furnace, there is no excessive air pressure in the furnace, so that the manual valve device thereof can be appropriately simplified. Meanwhile, the existing manual valve device mainly controls the opening and closing by using a ball valve, and is connected with the sintering furnace system through a matched flange, so that the problem of high cost and inconvenient maintenance exists.

[0036] To solve the above technical problems, the embodiment provides a manual valve device, please refer to Figures 1 to 4 as shown, Figure 1 a schematic view of the manual valve device connected with the pipeline in the embodiment, Figure 2 a front view of the manual valve device in the embodiment, Figure 3 a schematic view of the manual valve device in the closed valve position in the embodiment, Figure 4 a schematic view of the manual valve device in the open valve position in the embodiment.

[0037] The manual valve device of the embodiment comprises a screw rod 1, a joint 2 and a valve cover 3.

[0038] The screw rod 1 is internally provided with an air passage 11 extending in the axial direction, and the air passage 11 is used for conveying gas.

[0039] One end of the joint 2 is connected with the sintering furnace system, such as fixedly connected with the pipeline 6 of the sintering furnace system, and the other end is threadedly connected with one end of the screw rod 1. The joint 2 is internally provided with a channel 21 which is communicated between the sintering furnace system and the air passage 11.

[0040] The valve cover 3 is threadedly connected with the other end of the screw rod 1 and is provided with an air hole 31 which is communicated between the inside of the valve cover 3 and the outside.

[0041] The valve cover 3 is moved along the axial direction of the screw rod 1 by rotating around the screw rod 1, and has an open valve position and a closed valve position. In the open valve position, the air hole 31 is communicated with the air passage 11, and the gas in the sintering furnace system is sequentially discharged to the outside through the channel 21, the air passage 11 and the air hole 31. In the closed valve position, the air hole 31 is separated from the air passage 11 by the screw rod 1, and the gas in the air passage 11 cannot be discharged.

[0042] The manual valve device of the above technical scheme works by rotating the valve cover 3 to control the opening and closing. When the valve cover 3 is rotated to the open valve position, referring to Figure 4 , the air hole 31 is communicated with the air passage 11, and the gas in the sintering furnace system is sequentially discharged from the joint 2 and the screw rod 1 and finally from the air hole 31. When the valve cover 3 is rotated to the closed valve position, referring to Figure 3 , the air hole 31 is separated from the air passage 11 by the screw rod 1, and the gas is prevented from being discharged, thereby realizing the function of controlling the opening and closing of the gas. It can be understood that the valve cover 3 can also control the discharge speed by adjusting the size of the opening of the air hole 31. The joint between the joint 2 and the screw rod 1 and the joint between the valve cover 3 and the screw rod 1 are threadedly connected, which is more convenient to disassemble and assemble than the traditional flange connection, and can improve the convenience of maintenance. At the same time, the flange and ball valve components are saved, and the production cost is reduced.

[0043] In one embodiment of the above-mentioned threadedly connected valve cover 3 and screw rod 1, referring to Figure 3 , the valve cover 3 is provided with a sleeve 32, and an internal thread is arranged on the inside of the sleeve 32. The screw rod 1 is provided with an external thread for connecting with the internal thread. The air hole 31 is arranged on the side of the sleeve 32 and is communicated between the inside of the sleeve 32 and the outside.

[0044] In another embodiment of the above-mentioned threadedly connected valve cover 3 and screw rod 1 (not shown), the valve cover 3 is provided with a sleeve 32. The air hole 31 is arranged on the side of the sleeve 32 and is communicated between the inside of the sleeve 32 and the outside. An external thread is arranged on the outside of the sleeve 32. The screw rod 1 is provided with an internal thread for connecting with the external thread on the inside of the air passage 11.

[0045] In one embodiment of the above-mentioned air hole 31 and air passage 11 separated by the screw rod 1, referring to Figure 3As shown, the manual valve device also includes a first sealing ring 4, which is located between the valve cover 3 and the end of the screw 1. In the closed position, the end of the screw 1 and the valve cover 3 are sealed together by the first sealing ring 4 to separate the air hole 31 from the air passage 11.

[0046] For example, see Figure 3 As shown, the end of the screw 1 or the inner side of the valve cover 3 is provided with an annular groove 12 for accommodating the first sealing ring 4.

[0047] In one embodiment where the airway 11 and the channel 21 are connected, see [reference needed]. Figure 3 As shown, the manual valve device also includes a second sealing ring 5, which is disposed between the connector 2 and the screw 1 to make the connector 2 and the screw 1 sealed together.

[0048] For example, see Figure 3 As shown, the second sealing ring 5 can be installed in the following way: the screw 1 is provided with a limiting part 13, the end of the connector 2 connected to the screw 1 contacts the limiting part 13, and a second sealing ring 5 is provided between the connector 2 and the limiting part 13.

[0049] For example, the second sealing ring 5 can also be disposed between the connecting surfaces of the screw 1 and the connector 2.

[0050] To improve the uniformity of force distribution on valve cover 3 during gas discharge, refer to... Figure 2 As shown, there are at least two air holes 31, which are evenly distributed along the circumference of the valve cover 3.

[0051] For example, see Figure 2 As shown, all vents 31 are located at the same height.

[0052] This embodiment discloses a sintering furnace, see reference. Figure 1 As shown, the sintering furnace includes the aforementioned manual valve device and a pipe 6. The connector 2 of the manual valve device is fixedly connected to the pipe 6 for controlling the discharge of internal gas. Through the application of the aforementioned manual valve device, the sintering furnace of this embodiment not only achieves gas on / off control but also significantly improves the ease of assembly and disassembly, reducing production costs.

[0053] Although embodiments of the present invention 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hand valve device, characterized in that The manual valve device comprises: a screw rod, a joint and a valve cover; the screw rod is internally provided with an axially extending air passage; the joint is connected with a sintering furnace system at one end and is threadedly connected with one end of the screw rod at the other end, and the joint is internally provided with a channel for connecting the sintering furnace system with the air passage; the valve cover is threadedly connected with the other end of the screw rod and is provided with air holes for connecting the inside of the valve cover with the outside; wherein the valve cover has an open valve position and a closed valve position by rotating around the screw rod, in the open valve position, the air holes are communicated with the air passage; in the closed valve position, the air holes and the air passage are separated by the screw rod.

2. The manual valve device of claim 1, wherein The manual valve device further comprises a first sealing ring, which is arranged between the valve cover and the end of the screw rod, in the closed valve position, the end of the screw rod and the valve cover are sealingly matched by the first sealing ring to separate the air holes and the air passage.

3. The manual valve device of claim 1, wherein The manual valve device further comprises a second sealing ring, which is arranged between the joint and the screw rod to sealingly connect the joint and the screw rod.

4. The manual valve device of claim 3, wherein The screw rod is provided with a limiting portion, one end of the joint connected with the screw rod is in contact with the limiting portion, and the second sealing ring is arranged between the limiting portion.

5. The manual valve device of claim 1, wherein The valve cover is provided with a sleeve, and an internal thread is arranged in the inside of the sleeve, the screw rod is provided with an external thread for connecting with the internal thread, the air holes are arranged on the side of the sleeve and are communicated with the inside of the sleeve and the outside.

6. The manual valve device of claim 1, wherein The air holes are at least two and are uniformly distributed along the circumference of the valve cover.

7. A sintering furnace characterized by comprising: The manual valve device comprises any one of claims 1 to 6.

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