Constant-temperature foaming tool for water heater

Abstract

The invention discloses a constant-temperature foaming tool for a water heater, and belongs to the technical field of equipment for water heater production. A constant-temperature foaming tool for a water heater comprises a containing base plate, a supporting mechanism used for protecting the water heater is installed on one side of the containing base plate, a connecting frame is fixedly installed on the other side of the containing base plate, a cover body is installed on one side of the connecting frame, a lifting mechanism is installed on one side of the cover body, an air distribution ring is installed below the cover body, and air outlet holes are densely formed in the lower end of the air distribution ring. A hot air assembly is installed on the other side of the connecting frame, and a plurality of exhaust pipes are further arranged on the cover body in a penetrating mode. According to the technical scheme, the air distribution ring, the air heater and the lifting mechanism are arranged, additional heating equipment is not needed, the water heater can rapidly reach the appropriate temperature needed by foaming, meanwhile, the exhaust pipe is arranged, entering airflow can blow out dust or sundries involved in the shell of the water heater, and smooth foaming is fully guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of equipment for water heater production, and more specifically, to a constant temperature foaming tooling for water heaters. Background Art

[0002] In order to improve the thermal insulation performance of water heaters, extend their service life, and ensure that users can obtain a stable supply of hot water during use, relevant staff will inevitably use foaming technology in the process of manufacturing water heaters. Therefore, foaming tooling is widely used in the field of water heaters.

[0003] The document with the prior art publication number CN214872177U provides a foaming tooling, which has a simple structure and is easy to use. The bracket is composed of two cross bars and a plurality of connecting bars, which can not only provide sufficient support force, but also greatly reduce the weight of the bracket and reduce the amount of material. The foaming tooling composed of two brackets is light and thin, easy to carry and move, and suitable for the use scene of the general assembly workshop.

[0004] Although the above-mentioned existing technical solutions are convenient for the staff to carry and move the water heater, they still have the following defects; in the water heater foaming process, temperature is a very critical parameter, which has a significant impact on the foaming process and the quality of the foaming material. If the foaming temperature is too low, it will not only affect the chemical reaction rate of the foaming agent and prolong the foaming time, but also significantly reduce the density and stability of the foaming layer. When using the above-mentioned technical solution and most of the similar tooling on the market for foaming, it is often necessary to use a separate preheating equipment to preheat the water heater shell to be foamed. This method not only requires the use of many external equipment, but also is cumbersome to operate, which seriously affects the efficiency of the foaming process. In view of this, we propose a constant temperature foaming tooling for water heaters. Summary of the invention

[0005] The purpose of the present application is to provide a constant temperature foaming tool for a water heater, which solves the technical problem in the prior art that a preheating device is required to preheat the water heater shell to be foamed, and then a hot air device in the foaming tool is used to insulate and foam the water heater shell, thereby achieving the technical effect of integrating the preheating and foaming processes.

[0006] The embodiment of the present application provides a water heater constant temperature foaming tool, comprising: Place the bottom plate for placing the water heater to be foamed; The cover body is arranged on the top of the placing chassis through a connecting frame, and a lifting mechanism is arranged on one side of the cover body, and the lifting mechanism can drive the cover body to move toward the placing chassis; An air distribution ring is installed at the top of the cover body, a plurality of air outlet holes are opened below the air distribution ring, and the air distribution ring can move up and down with the cover body; A hot air component is arranged on one side of the connecting frame, and the hot air component includes a hot air blower, and the hot air blower is connected to the air distribution ring; Wherein, a plurality of exhaust pipes are provided on the cover body.

[0007] Preferably, the output end of the hot air blower is connected to an output pipe; The lifting mechanism comprises: The linear module is arranged on one side of the connecting frame; A receiving pipe is rotatably connected to the end of the output pipe, and the receiving pipe passes through the connecting frame; The driving ring is connected to the end of the receiving tube away from the output tube, the driving ring is communicated with the inner cavity of the air distribution ring, and the driving ring is driven by the linear module.

[0008] Preferably, the lifting mechanism further comprises: A driving pipe connected to the top of the driving ring, and the driving pipe is slidably arranged inside the receiving pipe; A connecting ring is rotatably embedded in the top of the driving ring, and the connecting ring is connected to the output end of the linear module; Wherein, a follower ring is rotatably embedded on the cover body, and the driving ring is connected with the air distribution ring via a connecting pipe passing through the follower ring.

[0009] Preferably, it also includes a rotating component for driving the receiving tube to rotate.

[0010] Preferably, the connecting pipe comprises: A driving pipe, connected to the driving ring, and connected to the following ring; A ventilation pipe is connected to the air distribution ring, and one end of the ventilation pipe is slidably disposed in the driving pipe; An elastic member connected between the driving pipe and the ventilation pipe; Wherein, the driving tube is made of transparent material.

[0011] Preferably, it further comprises a heat-insulating shell arranged opposite to each other, and a support mechanism is arranged on one side of each heat-insulating shell; Wherein, the supporting mechanism comprises: A protection plate connected to the corresponding heat-insulating shell; The driving blocks are slidably arranged on both sides of the placing chassis, the driving blocks are connected to the corresponding protection plates, and the driving blocks can drive the protection plates to move.

[0012] Preferably, the heat-insulating shell is a hollow structure, and the hollow cavity of the heat-insulating shell is connected to the output pipe through a connecting valve.

[0013] Preferably, the connecting valve comprises: A bearing cylinder is connected and penetrates the output pipe, and the output pipe is connected to both ends of the bearing cylinder through fixed pipes; An air supply hose is connected to one side of the bearing tube, and the other end of the air supply hose is communicated with the corresponding hollow cavity in the heat-insulating shell; The pushing frame is slidably arranged on both sides of the bearing tube, and the pushing frame is connected to the corresponding protection plate. A blocking block is arranged at one end of the pushing frame located in the bearing tube.

[0014] Preferably, the hot air assembly further comprises a filtering mechanism, and the filtering mechanism comprises: A filter cartridge is connected to the air suction end of the hot air blower, and a filter screen is installed in the filter cartridge; The air intake pipe is connected to one side of the filter cartridge.

[0015] Preferably, a return air hose is fixedly connected to the heat-insulating shell, and the other end of the return air hose extends to the inner cavity of the filter cartridge.

[0016] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. The technical solution of the present application can allow the water heater to quickly reach the appropriate temperature required for foaming by providing an air distribution ring, a hot air blower and a lifting mechanism without the need for additional heating equipment. At the same time, by providing an exhaust duct, the incoming air flow can also blow out dust or debris inside the water heater shell, fully ensuring the smooth progress of foaming.

[0017] 2. The technical solution of the present application can deliver the hot air flow to various positions inside the water heater shell by setting a driving pipe, a spline shaft and a rotating assembly, which can not only improve the preheating efficiency, but also ensure the uniformity of the temperature inside the water heater shell, effectively ensuring the smooth advancement of foaming.

[0018] 3. The technical solution of the present application provides a driving pipe, a ventilation pipe and an elastic member so that the staff can intuitively judge the foaming situation inside the water heater shell by observing the position of the ventilation pipe in the driving pipe, thereby facilitating the staff to control the foaming process.

[0019] 4. The technical solution of the present application can insulate the water heater shell after preheating the water heater shell by providing a sealing block, an air supply hose and an insulation shell, thereby ensuring that the internal temperature of the water heater shell is always maintained within a certain range during the entire foaming process, preventing the internal temperature of the water heater shell from decreasing and affecting the foaming quality, and further ensuring the smooth progress of foaming.

[0020] 5. The technical solution of the present application can filter the external air by setting a filter to prevent dirt in the external environment from entering the water heater shell, thereby effectively ensuring the cleanliness of the inside of the water heater shell; at the same time, by setting a return air hose, the hot air flow input into the insulation shell can be returned to the filter cartridge through the return air hose for reuse, thereby effectively reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a water heater constant temperature foaming tooling disclosed in a preferred embodiment of the present application; Figure 2 This is a schematic diagram of the overall structure of a water heater constant temperature foaming tooling disclosed in a preferred embodiment of the present application when foaming a water heater; Figure 3 This is a structural schematic diagram of a support mechanism in a water heater constant temperature foaming tooling disclosed in a preferred embodiment of the present application; Figure 4 It is a bottom view schematic diagram of the structure of the air distribution ring in the constant temperature foaming tooling of the water heater disclosed in a preferred embodiment of the present application; Figure 5 It is a schematic cross-sectional view of the structure of the cover body, the air distribution ring and the driving ring in the constant temperature foaming tooling of the water heater disclosed in a preferred embodiment of the present application; Figure 6 This is a schematic diagram of the structure of a hot air component in a constant temperature foaming tooling of a water heater disclosed in a preferred embodiment of the present application; Figure 7 It is a schematic cross-sectional view of the structure of the heat preservation shell in the constant temperature foaming tooling of the water heater disclosed in a preferred embodiment of the present application; Figure 8 It is a schematic cross-sectional view of the structure of the connecting valve in the constant temperature foaming tooling of the water heater disclosed in a preferred embodiment of the present application; Fig. 9 This is a schematic cross-sectional view of the structure of a valve connected after the protective plate in the constant temperature foaming tooling of a water heater disclosed in a preferred embodiment of the present application moves toward the middle.

[0022] Explanation of the reference numerals in the figure: 1. Placement chassis; 2. Mounting shell; 3. Protection plate; 4. Connecting frame; 5. Cover; 501. Storage slot; 6. Air distribution ring; 601. Air outlet; 7. Rotating assembly; 701. First motor; 702. Driving gear; 703. Driven gear; 8. Hot air assembly; 801. Filter cartridge; 802. Filter screen; 803. Output pipe; 804. Intake pipe; 805. Hot air blower; 9. Connecting valve; 901. Carrying cylinder; 902. Pushing frame; 903. Output pipe; 804. Intake pipe; 805. Hot air blower; 906. Connecting valve; 907. Carrying cylinder; 908. Pushing frame; 909. 03, blocking block; 904, fixing pipe; 905, plug rod; 906, connecting groove; 907, air supply hose; 10, screw rod; 11, second motor; 12, drive block; 13, return air hose; 14, follower ring; 15, insulation shell; 16, receiving tube; 1601, spline groove; 17, linear module; 18, driving ring; 19, driving tube; 20, ventilation tube; 21, driving tube; 22, spline shaft; 23, exhaust tube; 24, connecting ring; 25, elastic part. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present application is further described in detail below in conjunction with the accompanying drawings.

[0025] Reference Figure 1 , Figure 3 , Figure 4 and Figure 6 The embodiment of the present application discloses a constant temperature foaming tooling for a water heater, comprising: a placing chassis 1, a supporting mechanism for protecting the water heater is installed on one side of the placing chassis 1, a connecting frame 4 is fixedly installed on the other side of the placing chassis 1, a cover body 5 is installed on one side of the connecting frame 4, a lifting mechanism is installed on one side of the cover body 5, the lifting mechanism is used to drive the cover body 5 to move up and down, an air distribution ring 6 is installed under the cover body 5, and the lower end of the air distribution ring 6 is densely covered with air outlet holes 601, a hot air component 8 is installed on the other side of the connecting frame 4, the hot air component 8 includes a hot air blower 805, and the air outlet end of the hot air blower 805 is connected to the inner cavity of the air distribution ring 6, and a plurality of exhaust pipes 23 are also pierced on the cover body 5.

[0026] The air outlet end of the hot air blower 805 is fixedly connected to an output pipe 803, and the end of the output pipe 803 is connected to a receiving pipe 16. The receiving pipe 16 is passed through the connecting frame 4. A driving ring 18 is installed below the receiving pipe 16. The driving ring 18 is connected to the inner cavity of the air distribution ring 6. The lifting mechanism includes a linear module 17 fixedly installed on the connecting frame 4, and the output end of the linear module 17 is connected to the driving ring 18.

[0027] When the temperature is low, after the water heater to be foamed is placed on the base plate 1, under the action of the linear module 17, the cover body 5 drives the air distribution ring 6 to move downward, the cover body 5 covers the water heater shell, and the air distribution ring 6 extends into the space of the water heater shell to be filled with the foaming material. The hot air blower 805 is running, and the hot air is blown out through the air outlet 601 to preheat the space of the water heater shell to be filled with the foaming material. The water heater can quickly reach the appropriate temperature for foaming without the aid of external heating equipment. At the same time, by setting the exhaust pipe 23, the incoming air flow can also blow out the dust or debris remaining inside the water heater shell, fully ensuring the smooth progress of foaming.

[0028] Reference Figure 4 and Figure 5 A driving tube 21 is fixedly connected to the driving ring 18, a spline shaft 22 is sleeved on the outer side of the driving tube 21, a spline groove 1601 is provided in the receiving tube 16, the spline shaft 22 is slidably connected to the spline groove 1601, the receiving tube 16 is rotatably penetrated on the connecting frame 4, one side of the receiving tube 16 is limited by the output tube 803 and is rotatably connected thereto, a connecting ring 24 is rotatably embedded on the driving ring 18, the output end of the linear module 17 is fixedly connected to the connecting ring 24, a receiving groove 501 is also provided on the cover body 5, one side of the receiving groove 501 is rotatably connected to a follower ring 14, a connecting tube is penetrated on the follower ring 14, the connecting tube is fixedly connected between the driving ring 18 and the air distribution ring 6, a rotating component 7 is installed on one side of the receiving tube 16, and the rotating component 7 is used to drive the receiving tube 16 to rotate.

[0029] The rotating assembly 7 includes a first motor 701 fixedly mounted on the connecting frame 4, a driving gear 702 is fixedly connected to the output end of the first motor 701, a driven gear 703 is sleeved and fixed on one side of the receiving tube 16, and the driving gear 702 is meshedly connected with the driven gear 703.

[0030] During the preheating process, the first motor 701 runs, and under the connection between the driving gear 702 and the driven gear 703, the receiving tube 16 drives the spline shaft 22 and the driving ring 18 to rotate. Under the connection of the connecting tube, the air distribution ring 6 then rotates around the axis of the cover body 5 to deliver the hot air flow to various positions inside the water heater shell, which not only improves the preheating efficiency, but also ensures the uniformity of the temperature inside the water heater shell, and effectively ensures the smooth progress of foaming; in addition, the rotating setting of the air distribution ring 6 can also effectively blow up impurities in the space of the water heater shell to be filled with foaming material, so that the impurities are raised in a disordered state, which facilitates the impurities to enter the exhaust pipe 23.

[0031] The connecting tube includes a driving tube 19 fixedly connected to the driving ring 18. The driving tube 19 is fixedly connected to the following ring 14. A ventilation tube 20 is slidably connected to one side of the driving tube 19. An elastic member 25 is fixedly connected between the ventilation tube 20 and the driving tube 19. The driving tube 19 is made of a transparent material.

[0032] After the foaming material is injected into the foaming space of the water heater shell, a layer of plastic film is covered on the foaming material in the water heater shell, and then under the action of the linear module 17, the cover body 5 will cover the water heater shell. As the foaming material continues to expand, the air distribution ring 6 will drive the ventilation pipe 20 to move upward under the push of the foaming material. Since the driving pipe 19 is made of transparent material, the foaming situation inside the water heater shell can be intuitively judged by observing the position of the ventilation pipe 20 in the driving pipe 19, which is convenient for the staff to control the foaming process.

[0033] Reference Figure 2 , Figure 7 , Figure 8 and Fig. 9 The supporting mechanism includes a mounting shell 2 fixedly mounted on one side of the chassis 1, two driving blocks 12 are slidably connected in the mounting shell 2, a protective plate 3 is fixedly mounted on the inner side of the driving block 12, a driving mechanism is also installed in the mounting shell 2, the driving mechanism is used to drive the driving blocks 12 on both sides to move linearly in opposite directions, the driving mechanism includes a second motor 11, a screw rod 10 is fixedly connected to the output end of the second motor 11, and the driving block 12 is threadedly connected to the screw rod 10.

[0034] A heat-insulating shell 15 is fixedly mounted on the inner end surface of the protection plate 3 . The heat-insulating shell 15 is a hollow structure. The heat-insulating shell 15 is connected to the output pipe 803 via a connecting valve 9 .

[0035] The connecting valve 9 includes a supporting cylinder 901 fixedly connected to one side of the output pipe 803, two fixed tubes 904 are fixedly connected between the output pipe 803 and the supporting cylinder 901, air supply hoses 907 are fixedly connected between the two sides of the supporting cylinder 901 and the insulation shell 15, and pushing frames 902 are slidably penetrated on both sides of the supporting cylinder 901, the pushing frames 902 are fixedly connected to the protection plate 3, and a blocking block 903 is fixedly connected to the inner end of the pushing frame 902, an insert rod 905 is fixedly connected to the blocking block 903 on one side, and a connecting groove 906 is opened on the blocking block 903 on the other side, and the insert rod 905 is plugged into the connecting groove 906.

[0036] After preheating is completed, under the action of the second motor 11, the screw 10 rotates, and the driving blocks 12 on both sides then drive the corresponding protection plates 3 to move from the outside to the inside until the insulation shell 15 is in close contact with the outer wall of the water heater, thereby protecting the water heater during foaming.

[0037] During the movement of the protection plate 3, the pushing frame 902 drives the blocking block 903 to move along, and the blocking block 903 will gradually block one side of the output pipe 803 to prevent the air outlet 601 from continuing to discharge hot air into the already closed foaming space during the foaming process. At this time, the hot air flow will enter the outside of the supporting tube 901 through the fixed tube 904, and be input into the insulation shell 15 through the air supply hose 907 to insulate the water heater shell, thereby ensuring that the internal temperature of the water heater shell is always maintained within a certain range during the entire foaming process, preventing the internal temperature of the water heater shell from decreasing and affecting the foaming quality, and further ensuring the smooth progress of foaming.

[0038] Reference Figure 6 and Figure 7 The hot air assembly 8 also includes a filtering mechanism, which includes a filter cartridge 801 connected to the suction end of the hot air blower 805, and a plurality of suction pipes 804 are fixedly connected to one side of the filter cartridge 801. A filter screen 802 is installed in the filter cartridge 801. The setting of the filter screen 802 can filter the external air to prevent dirt in the external environment from entering the water heater shell, thereby effectively ensuring the cleanliness of the inside of the water heater shell.

[0039] The heat-insulating shell 15 is also fixedly connected with a return air hose 13 , and the other end of the return air hose 13 passes through one side of the filter cartridge 801 and extends to the inner cavity of the filter cartridge 801 .

[0040] The hot air flow input into the heat-insulating shell 15 can be returned to the filter cartridge 801 through the return air hose 13 for reuse, thereby effectively reducing energy consumption.

[0041] The implementation principle of a constant temperature foaming tool for water heaters in the embodiment of the present application is as follows: when the technical solution is needed to foam the water heater at a relatively low temperature, the water heater to be foamed is first placed on the placement chassis 1, and under the action of the linear module 17, the cover body 5 drives the air distribution ring 6 to move downward, the cover body 5 covers the water heater shell, and the air distribution ring 6 extends into the space in the water heater shell to be filled with foaming material. Then, the hot air blower 805 is operated, and the hot air is blown out through the air outlet 601 to preheat the space in the water heater shell to be filled with foaming material.

[0042] During the preheating process, the first motor 701 runs and the air distribution ring 6 rotates to deliver the hot air flow to various positions inside the water heater shell, thereby improving the preheating efficiency while ensuring the uniformity of the temperature inside the water heater shell, and effectively lifting and discharging impurities in the space of the water heater shell to be filled with the foaming material.

[0043] After preheating is completed, under the action of the second motor 11, the screw 10 rotates, and the driving blocks 12 on both sides then drive the corresponding protection plates 3 to move from the outside to the inside until the insulation shell 15 is in close contact with the outer wall of the water heater.

[0044] During the movement of the protection plate 3, the pushing frame 902 drives the blocking block 903 to move along, and the blocking block 903 will gradually block one side of the output pipe 803 to prevent the air outlet 601 from discharging hot air into the already closed foaming space during the foaming process. At this time, the hot air flow will enter the outside of the supporting tube 901 through the fixed tube 904, and be input into the insulation shell 15 through the air supply hose 907 to insulate the water heater shell.

[0045] Then, the linear module 17 runs in the reverse direction, the cover 5 is separated from the water heater, and an appropriate amount of foaming material can be injected into the foaming space of the water heater shell. After the injection is completed, a layer of plastic film is covered on the foaming material in the water heater shell. Then, under the action of the linear module 17, the cover 5 will cover the water heater shell. As the foaming material continues to expand, the air distribution ring 6 will drive the ventilation pipe 20 to move upward under the push of the foaming material. At this time, the foaming situation inside the water heater shell can be judged by observing the position of the ventilation pipe 20 in the driving pipe 19. In this way, the operation of foaming the inside of the water heater can be completed.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water heater constant temperature foaming tool, characterized in that: include: Place the bottom plate for placing the water heater to be foamed; The cover body is arranged on the top of the placing chassis through a connecting frame, and a lifting mechanism is arranged on one side of the cover body, and the lifting mechanism can drive the cover body to move toward the placing chassis; An air distribution ring is installed at the top of the cover body, a plurality of air outlet holes are opened below the air distribution ring, and the air distribution ring can move up and down with the cover body; A hot air component is arranged on one side of the connecting frame, and the hot air component includes a hot air blower, and the hot air blower is connected to the air distribution ring; Wherein, a plurality of exhaust pipes are provided on the cover body.

2. The water heater constant temperature foaming tooling according to claim 1, characterized in that: The output end of the hot air blower is connected to an output pipe; The lifting mechanism comprises: The linear module is arranged on one side of the connecting frame; A receiving pipe is rotatably connected to the end of the output pipe, and the receiving pipe passes through the connecting frame; The driving ring is connected to the end of the receiving tube away from the output tube, the driving ring is communicated with the inner cavity of the air distribution ring, and the driving ring is driven by the linear module.

3. The water heater constant temperature foaming tooling according to claim 2, characterized in that: The lifting mechanism also includes: A driving pipe connected to the top of the driving ring, and the driving pipe is slidably arranged inside the receiving pipe; A connecting ring is rotatably embedded in the top of the driving ring, and the connecting ring is connected to the output end of the linear module; Wherein, a follower ring is rotatably embedded on the cover body, and the driving ring is connected with the air distribution ring via a connecting pipe passing through the follower ring.

4. The water heater constant temperature foaming tooling according to claim 3, characterized in that: It also includes a rotating assembly for driving the receiving tube to rotate.

5. The water heater constant temperature foaming tooling according to claim 3, characterized in that: The connecting pipe comprises: A driving pipe, connected to the driving ring, and connected to the following ring; A ventilation pipe is connected to the air distribution ring, and one end of the ventilation pipe is slidably disposed in the driving pipe; An elastic member connected between the driving pipe and the ventilation pipe; Wherein, the driving tube is made of transparent material.

6. The water heater constant temperature foaming tooling according to claim 2, characterized in that: It also includes a heat-insulating shell that is arranged opposite to each other, and a support mechanism is arranged on one side of each heat-insulating shell; Wherein, the supporting mechanism comprises: A protection plate connected to the corresponding heat-insulating shell; The driving blocks are slidably arranged on both sides of the placing chassis, the driving blocks are connected to the corresponding protection plates, and the driving blocks can drive the protection plates to move.

7. The water heater constant temperature foaming tooling according to claim 6, characterized in that: The heat-insulating shell is a hollow structure, and the hollow cavity of the heat-insulating shell is connected with the output pipe through a connecting valve.

8. The water heater constant temperature foaming tooling according to claim 7, characterized in that: The connecting valve comprises: A bearing cylinder is connected and penetrates the output pipe, and the output pipe is connected to both ends of the bearing cylinder through fixed pipes; An air supply hose is connected to one side of the bearing tube, and the other end of the air supply hose is communicated with the corresponding hollow cavity in the heat-insulating shell; The pushing frame is slidably arranged on both sides of the bearing tube, and the pushing frame is connected to the corresponding protection plate. A blocking block is arranged at one end of the pushing frame located in the bearing tube.

9. The water heater constant temperature foaming tooling according to claim 6, characterized in that: The hot air assembly also includes a filtering mechanism, which includes: A filter cartridge is connected to the air suction end of the hot air blower, and a filter screen is installed in the filter cartridge; The air intake pipe is connected to one side of the filter cartridge.

10. The water heater constant temperature foaming tooling according to claim 9, characterized in that: The heat-insulating shell is also fixedly connected with a return air hose, and the other end of the return air hose extends to the inner cavity of the filter cartridge.

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