Continuous vacuum diffusion furnace

Abstract

The utility model discloses a continuous type vacuum diffusion furnace, relates to vacuum diffusion welding technical field, the utility model discloses a continuous type vacuum diffusion furnace, it includes base and furnace body, base internal lower part is provided with heat dissipation subassembly, heat dissipation subassembly includes water tank, and water tank external surface is equipped with deionized water pump, and deionized water pump water outlet end is connected with the inflow rate regulating valve, and the furnace body is equipped with the water inlet flow rate regulating valve. And heat insulation plates are connected to two sides in the furnace body. Through the arrangement of the heat dissipation assembly, the deionized water circularly flows through the deionized water pump, and the deionized water starts from the deionized water pump on the outer surface of the water tank; the water sequentially flows through a water inlet flow regulating valve, a sealing ring, a water return flow regulating valve, a primary heat exchanger, a deionizing water pump between the two heat exchangers, a secondary heat exchanger and a water tank through a water conveying pipe and then returns to the deionizing water pump on the outer surface of the water tank; the sealing ring is effectively prevented from being in a high-temperature state for a long time to be aged and damaged, so that the vacuum diffusion furnace can be continuously used, and the effects of no scale, waste heat recovery and abrasion reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum diffusion welding, in particular to a continuous vacuum diffusion furnace. Background Art

[0002] Diffusion welding refers to a solid-state welding method in which the workpiece is placed inside a vacuum diffusion furnace and pressurized at high temperature without producing visible deformation or relative movement. It is suitable for joining dissimilar metal materials, heat-resistant alloys and ceramics, intermetallic compounds, composite materials and other new materials. Diffusion welding is divided into two types: diffusion welding without an intermediate layer and diffusion welding with an intermediate layer.

[0003] The vacuum diffusion welding furnace with application number 202021187536.6 includes a furnace door and a furnace body. The furnace door opening periphery is provided with a furnace door frame, the furnace body opening periphery is provided with a furnace body frame, the furnace door frame and the furnace body frame are respectively provided with cooling water channels inside, and the two ends of each cooling water channel are respectively connected with a water inlet interface and a water outlet interface, and the water inlet interface and the water outlet interface are further connected to the cooling tower respectively; the furnace door and the furnace body are connected through a door control mechanism. The utility model has a simple structure and can effectively take away the heat dissipated from the furnace, thereby reducing the heat loss of the sealing ring on the furnace door caused by the heat dissipation inside the furnace body.

[0004] Although the impact of heat dissipation on the sealing ring can be reduced, firstly, the direct discharge of cold water without subsequent recycling will lead to heat waste. Secondly, the circulation of cold water will easily condense scale, causing the small circulation path to be blocked or affecting the heat absorption effect. Thirdly, when the furnace door is opened and closed, the sealing ring will easily cause friction with the furnace door or furnace body, thereby being subject to certain wear and tear, resulting in poor effect. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a continuous vacuum diffusion furnace to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a continuous vacuum diffusion furnace, comprising a base and a furnace body, a heat dissipation component is arranged at the lower part of the base, and the heat dissipation component includes a water tank, and a deionized water pump is installed on the outer surface of the water tank, and the water outlet of the deionized water pump is connected to a water inlet flow regulating valve, insulation boards are connected on both sides of the furnace body, and a sealing ring passes through the outer surface of the insulation board, a primary heat exchanger and a secondary heat exchanger are respectively installed on the top of the furnace body, and one side of the outer surface of the primary heat exchanger is connected to a return water flow regulating valve through a water pipe.

[0007] By adopting the above technical solution, the deionized water is circulated by the deionized water pump. The deionized water starts from the deionized water pump on the outer surface of the water tank, is transported by the water pipe, flows through the water inlet flow regulating valve, the sealing ring, the return water flow regulating valve, the primary heat exchanger, the deionized water pump between the two heat exchangers, the secondary heat exchanger, the water tank, and then returns to the deionized water pump on the outer surface of the water tank. Since deionized water is used as the medium, it is avoided that scale will block the pipeline, and heat is exchanged through the primary heat exchanger and the secondary heat exchanger, so that the heat in the deionized water can be used to heat water or air, so as to recover and utilize the waste heat and reduce the waste of heat energy. At the same time, the inlet and outlet water flows are adjusted by the inlet flow regulating valve and the return water flow regulating valve, so that the sealing ring expands or contracts. When the furnace door is closed, the inlet water is increased and the return water is reduced to make the sealing ring expand and fit the furnace door to complete the sealing. Then, the inlet and return water flows are balanced to ensure the shape of the sealing ring. When the furnace door is opened and closed, the inlet water is reduced and the return water is increased to make the sealing ring shrink, so as to avoid wear between the furnace door switch and the sealing ring.

[0008] Furthermore, the sealing ring is hollow inside.

[0009] By adopting the above technical scheme, the water inlet and outlet flows are adjusted by the cooperation of the water inlet flow regulating valve and the water return flow regulating valve, so that the sealing ring can expand or contract. When the furnace door is closed, the water inlet is increased and the water return is reduced to make the sealing ring expand and fit the furnace door to complete the seal. Then, the water inlet and water return flows are balanced to ensure the shape of the sealing ring. When the furnace door is opened and closed, the water inlet is reduced and the water return is increased to make the sealing ring contract, thereby avoiding wear between the furnace door switch and the sealing ring.

[0010] Furthermore, the outer surface and the back of the first-stage heat exchanger are both connected to a first delivery pipe, and the outer surface and the back of the second-stage heat exchanger are both connected to a second delivery pipe.

[0011] By adopting the above technical solution, heat is exchanged through the primary heat exchanger and the secondary heat exchanger, so that the heat in the deionized water can be used to heat water or air, so as to recover the waste heat and reduce the waste of heat energy.

[0012] Furthermore, the water inlet flow regulating valve and the sealing ring, the sealing ring and the return water flow regulating valve, and the secondary heat exchanger and the deionized water pump are all connected by water pipes, and the primary heat exchanger and the secondary heat exchanger are connected by water pipes and the deionized water pump.

[0013] By adopting the above technical solution, after the two deionized water pumps are started, the deionized water circulates. The deionized water starts from the deionized water pump on the outer surface of the water tank, is transported through the water pipe, flows through the water inlet flow regulating valve, the sealing ring, the return water flow regulating valve, the primary heat exchanger, the deionized water pump between the two heat exchangers, the secondary heat exchanger, the water tank, and then returns to the deionized water pump on the outer surface of the water tank.

[0014] Furthermore, there is a gap between the primary heat exchanger and the secondary heat exchanger and the furnace body.

[0015] By adopting the above technical solution, the heat on the surface of the furnace body is prevented from being transferred to the two heat exchangers through the gap between the primary heat exchanger, the secondary heat exchanger and the furnace body.

[0016] Furthermore, the furnace body is connected to the top of the base, and a furnace door is hinged on the outer surface of the furnace body, and a furnace cavity is arranged in the middle of the furnace body.

[0017] By adopting the above technical solution, the staff opens the furnace door and puts the workpiece into the furnace cavity. After placing the workpiece, the staff closes the furnace door, and the heating mechanism in the furnace body is started to start diffusion welding of the workpiece.

[0018] Furthermore, a control cabinet is installed on one side of the base, and the furnace body, the return water flow regulating valve, the inlet water flow regulating valve and the deionized water pump are all electrically connected to the control cabinet.

[0019] By adopting the above technical solution, the staff opens or closes the furnace body, the return water flow regulating valve, the inlet water flow regulating valve and the deionized water pump through the control cabinet.

[0020] Furthermore, a heat insulation component is arranged on the back of the heat insulation board, and the heat insulation component includes a heat insulation seat, and a heat insulation filler and a support ring are arranged between the heat insulation seat and the heat insulation board respectively.

[0021] By adopting the above technical solution, while using deionized water to recover waste heat to lower the temperature of the sealing ring, the high temperature in the furnace is reduced by heat conduction through the cooperation of the insulation board, the insulation seat and the insulation filler. At the same time, the support ring supports the insulation board and the insulation seat, reducing the heat transfer area between the two and thus reducing heat conduction.

[0022] Furthermore, the cross section of the support ring is in the shape of an I.

[0023] By adopting the above technical solution, the support ring can support the insulation board and the insulation seat to prevent the insulation filler from being compressed and damaged, while reducing the heat transfer area between the insulation board and the insulation seat to reduce heat conduction.

[0024] Furthermore, four support rings are provided, and the four support rings are distributed vertically.

[0025] By adopting the above technical solution, the support ring supports the heat insulation plate and the heat insulation seat, reducing the heat transfer area between the two and thus reducing heat conduction.

[0026] In summary, the utility model mainly has the following beneficial effects:

[0027] The utility model arranges the heat dissipation component and the deionized water pump to circulate the deionized water. The deionized water starts from the deionized water pump on the outer surface of the water tank, is transported through the water delivery pipe, flows through the water inlet flow regulating valve, the sealing ring, the return flow regulating valve, the primary heat exchanger, the deionized water pump between the two heat exchangers, the secondary heat exchanger, the water tank and then returns to the deionized water pump on the outer surface of the water tank. Since the deionized water is used as the medium, the scale is prevented from blocking the pipeline, and the heat is exchanged through the primary heat exchanger and the secondary heat exchanger, so that the heat in the deionized water can be used to heat water or air, so as to recover the waste heat. Recycling reduces heat energy waste. At the same time, the inlet and outlet water flows are adjusted through the inlet flow regulating valve and the return water flow regulating valve to make the sealing ring expand or contract. When the furnace door is closed, the inlet water is increased and the return water is reduced to make the sealing ring expand and fit the furnace door to complete the seal. Then the inlet and return water flows are balanced to ensure the shape of the sealing ring. When the furnace door is opened and closed, the inlet water is reduced and the return water is increased to make the sealing ring contract, avoiding wear between the furnace door switch and the sealing ring; effectively avoiding aging and damage of the sealing ring due to long-term high temperature state, so as to facilitate the continuous use of the vacuum diffusion furnace, and it has the effects of no scale, waste heat recovery and reduced wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the cross-sectional structure of the furnace body of the utility model;

[0030] Figure 3 This is a schematic diagram of the back structure of the furnace body of the utility model;

[0031] Figure 4 It is a schematic diagram of the side section structure of the heat insulation board of the utility model;

[0032] Figure 5 For the utility model Figure 4 A magnified view of the structure in Figure 2.

[0033] In the figure: 1. base; 2. furnace body; 3. furnace door; 4. control cabinet; 5. furnace cavity; 6. heat dissipation component; 601. primary heat exchanger; 602. first delivery pipe; 603. secondary heat exchanger; 604. second delivery pipe; 605. return water flow regulating valve; 606. water delivery pipe; 607. inlet water flow regulating valve; 608. deionized water pump; 609. insulation board; 610. sealing ring; 611. water tank; 7. insulation component; 701. insulation seat; 702. insulation filler; 703. support ring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0035] The following describes an embodiment of the utility model based on its overall structure.

[0036] Embodiment 1:

[0037] A continuous vacuum diffusion furnace, such as Figure 1-Figure 5 As shown, it includes a base 1 and a furnace body 2, and a heat dissipation component 6 is arranged at the lower part of the base 1.

[0038] Specifically, the heat dissipation component 6 includes a water tank 611 installed at the lower part of the base 1, so as to store excess deionized water when adjusting the flow rate of deionized water; a deionized water pump 608 is installed on the outer surface of the water tank 611, so that the deionized water circulates and takes away the heat of the sealing ring 610 to recover the dissipated heat; the water outlet of the deionized water pump 608 is connected to a water inlet flow regulating valve 607, and insulation plates 609 are connected on both sides of the furnace body 2 to reduce the influence of heat conduction on the sealing ring 610; a sealing ring 610 runs through the outer surface of the insulation plate 609, and the sealing ring 610 is hollow inside, and the sealing ring 610 can expand or contract, thereby reducing the wear of the sealing ring 610 and increasing the sealing performance; a primary heat exchanger 601 and a secondary heat exchanger are installed on the top of the furnace body 2 respectively. The first heat exchanger 601 and the second heat exchanger 603 are connected to the furnace body 2, the outer surface and the back of the first heat exchanger 601 are connected to the first delivery pipe 602, and the outer surface and the back of the second heat exchanger 603 are connected to the second delivery pipe 604. Heat is exchanged through the first heat exchanger 601 and the second heat exchanger 603, so that the heat in the deionized water can be used to heat water or air, so as to recover and utilize the waste heat and reduce the waste of heat energy; there are gaps between the first heat exchanger 601 and the second heat exchanger 603 and the furnace body 2, so as to reduce the influence of heat conduction on the first heat exchanger 601 and the second heat exchanger 603; one side of the outer surface of the first heat exchanger 601 is connected to the return water flow regulating valve 605 through the water delivery pipe 606, and the inlet and outlet water flows are adjusted by the cooperation of the inlet water flow regulating valve 607 and the return water flow regulating valve 605.

[0039] See also Figure 1-Figure 3In the above embodiment, the water inlet flow regulating valve 607 and the sealing ring 610, the sealing ring 610 and the return water flow regulating valve 605, and the secondary heat exchanger 603 and the deionized water pump 608 are all connected through the water pipe 606, and the primary heat exchanger 601 and the secondary heat exchanger 603 are connected through the water pipe 606 and the deionized water pump 608. After the two deionized water pumps 608 are started, the deionized water circulates, and the deionized water starts from the deionized water pump 608 on the outer surface of the water tank 611, is transported through the water pipe 606, and flows through the water inlet flow regulating valve 607, the sealing ring 610, the return water flow regulating valve 605, the primary heat exchanger 601, the deionized water pump 608 between the two heat exchangers, the secondary heat exchanger 603, the water tank 611, and then returns to the deionized water pump 608 on the outer surface of the water tank 611.

[0040] See also Figure 1-Figure 3 In the above embodiment, the furnace body 2 is connected to the top of the base 1, a furnace door 3 is hinged on the outer surface of the furnace body 2, a furnace cavity 5 is arranged in the middle of the furnace body 2, a heating mechanism is arranged inside the furnace cavity 5, a control cabinet 4 is installed on one side of the base 1, and the heating mechanism, return water flow regulating valve 605, inlet water flow regulating valve 607 and deionized water pump 608 in the furnace body 2 are all electrically connected to the control cabinet 4, and the staff switches the heating mechanism, return water flow regulating valve 605, inlet water flow regulating valve 607 and deionized water pump 608 through the control cabinet 4.

[0041] Embodiment 2:

[0042] On the basis of the above-mentioned embodiment 1, although the heat dissipation component 6 is provided to effectively prevent the sealing ring 610 from being in a high temperature state for a long time and causing aging and damage, so as to facilitate the continuous use of the vacuum diffusion furnace, and has the effects of no scale, waste heat recovery and reduced wear; but the heat in the furnace body 2 will cause the sealing ring 610 to heat up through heat conduction, resulting in more heat, which makes it difficult for deionized water to quickly take away the heat and cause damage to the sealing ring 610; now, by providing a heat insulation component 7, the high temperature in the furnace can be reduced from being transferred to the sealing ring 610 through heat conduction.

[0043] See also Figure 2 , Figure 4 and Figure 5 In the above embodiment, a heat insulation component 7 is provided on the back of the heat insulation board 609 .

[0044] Specifically, the thermal insulation assembly 7 includes a thermal insulation seat 701 connected to the back of the thermal insulation board 609, and a thermal insulation filler 702 and a support ring 703 are respectively arranged between the thermal insulation seat 701 and the thermal insulation board 609. The cross-section of the support ring 703 is in the shape of an "I". Four support rings 703 are arranged, and the four support rings 703 are vertically distributed. The thermal insulation board 609, the thermal insulation seat 701 and the thermal insulation filler 702 cooperate to reduce the high temperature in the furnace from being transferred to the sealing ring 610 through heat conduction. At the same time, the support ring 703 supports the thermal insulation board 609 and the thermal insulation seat 701, thereby reducing the heat transfer area between the two and thereby reducing heat conduction.

[0045] The implementation principle of the utility model is as follows: first, the staff controls the water inlet flow regulating valve 607 and the return water flow regulating valve 605 through the control cabinet 4, and adjusts the water inlet and water outlet flow through the water inlet flow regulating valve 607 and the return water flow regulating valve 605, reduces the water inlet and increases the return water to shrink the sealing ring 610, and avoids the wear between the furnace door 3 switch and the sealing ring 610, and then the staff opens the furnace door 3 and puts the workpiece into the furnace chamber 5;

[0046] After placing the workpiece, the staff closes the furnace door 3, and turns on the heating mechanism and deionized water pump 608 in the furnace body 2 through the control cabinet 4, and controls the water inlet flow regulating valve 607 and the return water flow regulating valve 605 again, and adjusts the water inlet and outlet flow through the water inlet flow regulating valve 607 and the return water flow regulating valve 605, increases the water inlet and reduces the return water to make the sealing ring 610 expand and fit with the furnace door 3 to complete the sealing, and then balances the water inlet and return water flow to ensure the shape of the sealing ring 610, and starts the heating mechanism in the furnace body 2 to start the diffusion welding of the workpiece;

[0047] After the two deionized water pumps 608 are started, the deionized water circulates. The deionized water starts from the deionized water pump 608 on the outer surface of the water tank 611, is transported through the water pipe 606, and sequentially flows through the water inlet flow regulating valve 607, the sealing ring 610, the return water flow regulating valve 605, the primary heat exchanger 601, the deionized water pump 608 between the two heat exchangers, the secondary heat exchanger 603, the water tank 611, and then returns to the deionized water pump 608 on the outer surface of the water tank 611, thereby taking away the heat of the sealing ring 610 to prevent the sealing ring 610 from being affected by high temperature. Since deionized water is used as the medium, the scale is prevented from clogging the pipeline, and heat is exchanged through the primary heat exchanger 601 and the secondary heat exchanger 603, so that the heat in the deionized water can be used to heat water or air, so as to recover the waste heat and reduce the waste of heat energy.

[0048] While utilizing deionized water to recycle waste heat and lower the temperature of the sealing ring 610, the heat insulation plate 609, the heat insulation seat 701 and the heat insulation filler 702 cooperate to reduce the high temperature in the furnace from being transferred to the sealing ring 610 through heat conduction. At the same time, the support ring 703 supports the heat insulation plate 609 and the heat insulation seat 701, thereby reducing the heat transfer area between the two and thus reducing heat conduction.

[0049] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A continuous vacuum diffusion furnace, comprising a base (1) and a furnace body (2), characterized in that: A heat dissipation component (6) is arranged at the lower part of the base (1), and the heat dissipation component (6) comprises a water tank (611), and a deionized water pump (608) is installed on the outer surface of the water tank (611), and a water inlet flow regulating valve (607) is connected to the water outlet of the deionized water pump (608), and a heat insulation board (609) is connected to both sides of the furnace body (2), and a sealing ring (610) passes through the outer surface of the heat insulation board (609), and a primary heat exchanger (601) and a secondary heat exchanger (603) are respectively installed on the top of the furnace body (2), and one side of the outer surface of the primary heat exchanger (601) is connected to a return water flow regulating valve (605) through a water delivery pipe (606).

2. A continuous vacuum diffusion furnace according to claim 1, characterized in that: The sealing ring (610) is hollow inside.

3. The continuous vacuum diffusion furnace according to claim 1, characterized in that: The outer surface and the back of the primary heat exchanger (601) are both connected to a first delivery pipe (602), and the outer surface and the back of the secondary heat exchanger (603) are both connected to a second delivery pipe (604).

4. The continuous vacuum diffusion furnace according to claim 1, characterized in that: The water inlet flow regulating valve (607) and the sealing ring (610), the sealing ring (610) and the return water flow regulating valve (605), and the secondary heat exchanger (603) and the deionized water pump (608) are all connected via a water pipe (606), and the primary heat exchanger (601) and the secondary heat exchanger (603) are connected via a water pipe (606) and the deionized water pump (608).

5. The continuous vacuum diffusion furnace according to claim 1, characterized in that: There is a gap between the primary heat exchanger (601) and the secondary heat exchanger (603) and the furnace body (2).

6. The continuous vacuum diffusion furnace according to claim 1, characterized in that: The furnace body (2) is connected to the top of the base (1), and a furnace door (3) is hingedly connected to the outer surface of the furnace body (2), and a furnace cavity (5) is arranged in the middle of the furnace body (2).

7. A continuous vacuum diffusion furnace according to claim 6, characterized in that: A control cabinet (4) is installed on one side of the base (1), and the furnace body (2), the return water flow regulating valve (605), the inlet water flow regulating valve (607) and the deionized water pump (608) are all electrically connected to the control cabinet (4).

8. The continuous vacuum diffusion furnace according to claim 1, characterized in that: A heat insulation component (7) is arranged on the back of the heat insulation board (609), and the heat insulation component (7) comprises a heat insulation seat (701), and a heat insulation filler (702) and a support ring (703) are arranged between the heat insulation seat (701) and the heat insulation board (609), respectively.

9. The continuous vacuum diffusion furnace according to claim 8, characterized in that: The support ring (703) has an I-shaped cross section.

10. The continuous vacuum diffusion furnace according to claim 9, characterized in that: Four support rings (703) are provided, and the four support rings (703) are distributed vertically.

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