Steam dewaxing kettle capable of improving waste heat recovery

Abstract

The utility model relates to a steam dewaxing kettle capable of improving waste heat recovery, and relates to the technical field of casting equipment, the steam dewaxing kettle comprises a rack and a kettle body arranged on the rack, a steam generator is arranged on the kettle body, the steam generator injects high-temperature steam into the kettle body, and a recycling device used for recycling high-temperature waste gas generated in the kettle body is arranged on the rack. The gas in the kettle body is pumped into the gas outlet pipe by starting the sucking pump, the gas is guided into the recycling box by the gas outlet pipe, the heated plate is in contact with the gas guided out by the gas outlet pipe, the heated plate absorbs heat energy in the gas and transmits the heat energy to the water supply pipe, and the water supply pipe preheats water entering the steam generator after receiving the heat energy. Therefore, the power consumption required by steam generation in the steam generator is reduced, the work of recycling preheating in the gas is completed, and the waste of heat energy resources is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of casting equipment, and in particular to a steam dewaxing kettle for improving waste heat recovery. Background Art

[0002] The dewaxing kettle is one of the key equipment in the casting industry, mainly used to remove the wax mold in the mold shell during the casting process. In the casting process, first, a mold shell is made through the wax mold, and then the wax mold needs to be removed from the mold shell for subsequent metal pouring. The dewaxing kettle melts the wax mold and discharges it from the mold shell through the action of heating and steam pressure, so as to achieve the purpose of dewaxing.

[0003] In the related art, reference can be made to the Chinese utility model patent with the authorized announcement number of CN220532904U, which discloses an electric heating steam dewaxing kettle, including a bracket, the top of the bracket is fixed with an outer tank, the top of the outer tank is penetrated by a steam assembly, the inner wall of the outer tank is attached with an inner tank, a drainage assembly is arranged in parallel on one side of the steam assembly, the bottom of the inner wall of the inner tank is attached with a wax cleaning device, the surface of the wax cleaning device is provided with an internal thread hole, the inner wall of the internal thread hole is attached with an external thread screw rod, one end of the external thread screw rod is connected with a sealed bearing, and the other end of the external thread screw rod is fixed with a rotating handle.

[0004] However, a large amount of high-temperature waste gas will be generated after the above dewaxing kettle completes the dewaxing work. The direct discharge of these high-temperature waste gases not only easily pollutes the environment but also causes waste of thermal energy resources. Utility Model Content

[0005] In order to reduce the waste of thermal energy resources generated during the operation of the dewaxing kettle, the present application provides a steam dewaxing kettle for improving waste heat recovery.

[0006] A steam dewaxing kettle for improving waste heat recovery provided by the present application adopts the following technical solutions:

[0007] A steam dewaxing kettle for improving waste heat recovery includes a frame and a kettle body arranged on the frame. A steam generator is arranged on the kettle body, and the steam generator injects high-temperature steam into the kettle body. A recycling device for recycling the high-temperature waste gas generated in the kettle body is arranged on the frame. The recycling device includes:

[0008] A recycling tank, which is arranged on the frame;

[0009] An air outlet pipe, one end of which is arranged on the kettle body and communicated with the inside of the kettle body, the other end of the air outlet pipe is connected with the recycling tank and communicated with the inside of the recycling tank, and an air extraction pump is arranged on the air outlet pipe, and the air extraction pump is used to extract the gas in the kettle body;

[0010] The heat-receiving plate is arranged on the recycling tank. The heat-receiving plate contacts with the gas discharged from the air outlet pipe. A water supply pipe is arranged on the frame. The water supply pipe is communicated with the steam generator. The water supply pipe supplies water to the steam generator. The water supply pipe passes through the recycling tank. The part of the water supply pipe located inside the recycling tank passes through the heat-receiving plate.

[0011] By adopting the above technical solution, the air extraction pump is started to extract the gas in the kettle body into the air outlet pipe. The air outlet pipe conducts the gas into the recycling tank. The heat-receiving plate contacts with the gas discharged from the air outlet pipe. The heat-receiving plate absorbs the heat energy in the gas and transfers the heat to the water supply pipe. After receiving the heat energy, the water supply pipe preheats the water body entering the steam generator, thereby reducing the power consumption required to generate steam in the steam generator, and thus completing the work of recycling the preheating in the gas and reducing the waste of heat energy resources.

[0012] Optionally, a water storage space for storing the condensed water formed on the heat-receiving plate is left between the bottom of the heat-receiving plate and the inner bottom wall of the recycling tank. A water return pipe is arranged on the recycling tank. The water return pipe is connected to the water supply pipe. A water extraction pump is arranged on the water return pipe. The water extraction pump is used to extract the condensed water in the recycling tank into the water return pipe.

[0013] By adopting the above technical solution, after the heat-receiving plate contacts with the gas discharged from the air outlet pipe, the water vapor in the gas will condense on the heat-receiving plate. The heat-receiving plate conducts the condensed water into the water storage space at the bottom of the recycling tank for temporary storage. When a certain amount of condensed water is stored in the water storage space, the water extraction pump is started to pump the condensed water into the water return pipe. The water return pipe then conducts the condensed water into the water supply pipe for reuse, thus completing the work of recycling the water resource and reducing the waste of water resource.

[0014] Optionally, the water supply pipe is arranged obliquely. The height of the end of the water supply pipe connected to the steam generator is higher than the height of the end of the water supply pipe connected to the heat-receiving plate.

[0015] By adopting the above technical solution, the water supply pipe is arranged obliquely, thereby increasing the contact area between the water supply pipe and the heat-receiving plate, improving the heat exchange efficiency between the heat-receiving plate and the water supply pipe, and since the water supply pipe is inclined, the condensed water condensed on the water supply pipe will flow along the water supply pipe to the heat-receiving plate, thus facilitating the heat-receiving plate to concentrate and guide the condensed water.

[0016] Optionally, a gas filtering mechanism for filtering the gas discharged from the air outlet pipe is arranged on the recycling tank. The gas filtering mechanism includes:

[0017] A gas filtering frame is arranged on the inner side wall of the recycling tank;

[0018] A filter element is filled in the gas filtering frame. The filter element is located at the pipe orifice of the air outlet pipe;

[0019] A limiting component, which is arranged on the air filter frame and is used to limit the position of the filter element in the air filter frame.

[0020] By adopting the above technical solution, the air filter frame is installed on the inner side wall of the reuse tank, then the filter element is filled in the air filter frame, and the filter element is limited in the air filter frame by the limiting component. The filter element filters the gas led out by the air outlet pipe, adsorbs harmful substances such as impurities in the gas, thereby reducing the probability of the condensate water in the reuse tank being polluted and ensuring the cleanliness of the condensate water.

[0021] Optionally, the limiting component includes:

[0022] A limiting mesh cover, which is sleeved on the air filter frame, and the mesh surface of the limiting mesh cover abuts against the filter element;

[0023] A limiting block, a horizontal limiting hole is provided in the part of the limiting mesh cover sleeved on the outer side wall of the air filter frame, a horizontal sliding groove is provided on the outer side wall of the air filter frame, and the limiting block is slidably arranged on the sliding groove;

[0024] A limiting spring, which is arranged on the inner bottom wall of the sliding groove and is connected to the limiting block. The limiting block partially penetrates out of the sliding groove under the action of the limiting spring and is inserted and matched with the limiting hole.

[0025] By adopting the above technical solution, move the limiting mesh cover to be sleeved on the air filter frame. The limiting block partially penetrates out of the sliding groove under the action of the limiting spring and is inserted and matched with the limiting hole on the limiting mesh cover, so as to fixedly cover the filter element with the limiting mesh cover. When it is necessary to remove the filter element for replacement, move the limiting block to compress the limiting spring and move until the whole limiting block is moved into the sliding groove, then the limiting block is separated from the limiting mesh cover, and the limiting mesh cover can be removed to replace the filter element, which is convenient, fast and has high working efficiency.

[0026] Optionally, an arc-shaped guiding surface is provided on one side wall of the part of the limiting block penetrating out of the sliding groove and close to the surface of the limiting mesh cover.

[0027] By adopting the above technical solution, an arc-shaped guiding surface is provided on one side wall of the part of the limiting block penetrating out of the sliding groove and close to the surface of the limiting mesh cover. Thus, when the limiting mesh cover is sleeved on the air filter frame, the limiting mesh cover first contacts the guiding surface, and the guiding surface will generate a component force that drives the limiting block into the sliding groove, so that there is no need to manually squeeze the limiting block into the sliding groove, which simplifies the working steps and improves the working efficiency.

[0028] Optionally, a plurality of vertical diversion grooves are uniformly arranged on the plate surface of the heat receiving plate.

[0029] By adopting the above technical solution, a number of vertical guide grooves are evenly distributed on the surface of the heated plate. The guide grooves increase the wind receiving area of the heated plate and also guide the condensed water, thereby improving the heat exchange efficiency between the heated plate and the gas.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. The vacuum pump is started to extract the gas in the kettle into the outlet pipe, which then guides the gas into the recycling box. The heated plate comes into contact with the gas discharged from the outlet pipe, absorbs the heat energy in the gas and transfers the heat to the water supply pipe. After receiving the heat energy, the water supply pipe preheats the water entering the steam generator, thereby reducing the power consumption required to generate steam in the steam generator, completing the work of recycling the preheated gas and reducing the waste of thermal energy resources.

[0032] 2. By installing the air filter frame on the inner wall of the recycling box, filling the air filter frame with a filter element, and limiting the filter element in the air filter frame through the limiter assembly, the filter element filters the gas discharged from the outlet pipe and absorbs impurities and other harmful substances in the gas, thereby reducing the probability of condensate water in the recycling box being contaminated and ensuring the cleanliness of the condensate water;

[0033] 3. By evenly distributing a number of vertical guide grooves on the surface of the heated plate, the guide grooves not only increase the wind receiving area of the heated plate but also guide the condensed water, thereby improving the heat exchange efficiency between the heated plate and the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of this application;

[0035] Figure 2 is a schematic structural diagram of the recycling device in the present application, wherein the side wall of the recycling box and the side wall of the heated plate are cut away;

[0036] Figure 3 It is a structural diagram of the air filter mechanism in this application, in which the side walls of the air filter frame and the limiting mesh cover are cut away.

[0037] Figure numerals: 1. frame; 11. kettle body; 12. steam generator; 13. water supply pipe; 14. return pipe; 15. water pump; 2. recycling device; 21. recycling box; 22. air outlet pipe; 23. heating plate; 24. air pump; 25. guide groove; 3. air filter mechanism; 31. air filter frame; 32. filter element; 33. limit assembly; 34. limit mesh cover; 35. limit block; 36. limit spring; 37. limit hole; 38. sliding groove; 39. guide surface. DETAILED DESCRIPTION

[0038] The following further describes the present application with reference to the accompanying drawings. Figure 1 - Drawings Figure 3 The present application will be further described in detail below.

[0039] An embodiment of the present application discloses a steam dewaxing kettle for improving waste heat recovery.

[0040] Referring to Figure 1 , the steam dewaxing kettle for improving waste heat recovery includes a frame 1 and a kettle body 11 fixedly installed on the frame 1. A steam generator 12 is installed on the kettle body 11, and the steam generator 12 injects high-temperature steam into the kettle body 11. A recycling device 2 for recycling the high-temperature waste gas generated in the kettle body 11 is provided on the frame 1.

[0041] Referring to Figure 1 and Figure 2 , the recycling device 2 includes a recycling box 21, an air outlet pipe 22, and a heating plate 23. The recycling box 21 is fixedly installed on the frame 1 on one side of the kettle body 11. One end of the air outlet pipe 22 is fixedly connected to the outer side wall of the kettle body 11 and is in communication with the inside of the kettle body 11, and the other end of the air outlet pipe 22 is connected to the outer side wall of the recycling box 21 close to the kettle body 11 and is in communication with the inside of the recycling box 21. An air extraction pump 24 is fixedly installed on the air outlet pipe 22, and the air extraction pump 24 is used to extract the gas in the kettle body 11 into the air outlet pipe 22.

[0042] Referring to Figure 1 and Figure 2 , the heating plate 23 is fixedly installed on the inner top wall of the recycling box 21 and is arranged vertically. A plurality of vertical diversion grooves 25 are uniformly formed on the side wall of the heating plate 23 close to the air outlet pipe 22. The heating plate 23 receives the gas led out by the air outlet pipe 22. A water supply pipe 13 is fixedly installed on the frame 1. The water supply pipe 13 is arranged obliquely. One end of the water supply pipe 13 is communicated with a cold water source, and the other end of the water supply pipe 13 is communicated with the steam generator 12. The water supply pipe 13 passes through the recycling box 21, and the part of the water supply pipe 13 located in the recycling box 21 passes through the heating plate 23. The height of the end of the water supply pipe 13 connected to the steam generator 12 is higher than the height of the end of the water supply pipe 13 connected to the heating plate 23.

[0043] Referring to Figure 1 and Figure 2 , after the heating plate 23 comes into contact with the gas led out by the air outlet pipe 22, heat exchange will occur between the heating plate 23 and the gas. The heating plate 23 receives the heat from the gas and transfers the heat to the water supply pipe 13. Thus, the preheating of the water body entering the steam generator 12 is completed by using the waste heat in the gas.

[0044] Referring to Figure 1 and Figure 2, when heat exchange occurs between the heating plate 23 and the gas, a lot of condensed water will also be condensed. A water storage space for storing the condensed water formed on the heating plate 23 is provided between the bottom of the heating plate 23 and the inner bottom wall of the reuse tank 21. A return water pipe 14 is fixedly installed on the outer side wall of the upper part of the reuse tank 21. The return water pipe 14 is communicated with the water supply pipe 13. A water pump 15 is fixedly installed on the return water pipe 14. The water pump 15 is used to pump the condensed water in the reuse tank 21 into the return water pipe 14.

[0045] Refer to Figure 1 and Figure 2 , after the heating plate 23 comes into contact with the gas led out by the air outlet pipe 22, the water vapor in the gas will condense on the heating plate 23. The heating plate 23 guides the condensed water into the water storage space at the bottom of the reuse tank 21 for temporary storage. When a certain amount of condensed water is stored in the water storage space, the water pump 15 is started to pump the condensed water into the return water pipe 14. The return water pipe 14 then guides the condensed water into the water supply pipe 13 for reuse, thus completing the recycling work of water resources and reducing the waste of water resources.

[0046] Refer to Figure 2 and Figure 3 , a gas filtering mechanism 3 for filtering the gas led out by the air outlet pipe 22 is arranged on the reuse tank 21. The gas filtering mechanism 3 includes a filtering frame 31, a filtering core 32 and a limiting component 33. The filtering frame 31 is fixedly installed on the inner side wall of the reuse tank 21. The connection part between the air outlet pipe 22 and the reuse tank 21 is located inside the filtering frame 31. The filtering core 32 is filled in the filtering frame 31. The filtering core 32 adsorbs impurities and harmful substances in the gas led out by the air outlet pipe 22. The limiting component 33 is arranged on the filtering frame 31 and is used to limit the position of the filtering core 32 in the filtering frame 31.

[0047] Refer to Figure 2 and Figure 3 , the limiting component 33 includes a limiting mesh cover 34, a limiting block 35 and a limiting spring 36. The limiting mesh cover 34 is sleeved on the outer side wall of the filtering frame 31. The mesh surface of the limiting mesh cover 34 abuts against the filtering core 32. A horizontal limiting hole 37 is formed in the part of the limiting mesh cover 34 sleeved on the outer side wall of the filtering frame 31. A horizontal sliding groove 38 is formed on the outer side wall of the filtering frame 31. The sliding groove 38 is communicated with the limiting hole 37. The limiting block 35 is slidably installed on the sliding groove 38. One end of the limiting spring 36 is fixedly installed on the inner bottom wall of the sliding groove 38. The other end of the limiting spring 36 is connected with the limiting block 35. The limiting block 35 partially penetrates out of the sliding groove 38 under the action of the limiting spring 36 and is inserted and matched with the limiting hole 37. A circular arc-shaped guiding surface 39 is formed on the side wall of the part of the limiting block 35 penetrating out of the sliding groove 38 close to the surface of the limiting mesh cover 34.

[0048] Refer to Figure 2 and Figure 3, the movable limit wire mesh cover 34 is sleeved on the air filter frame 31. Under the action of the limit spring 36, the limit block 35 partially penetrates out of the sliding groove 38 and is inserted and matched with the limit hole 37 on the limit wire mesh cover 34, so as to fixedly cover the filter element 32 with the limit wire mesh cover 34. When it is necessary to remove the filter element 32 for replacement, move the limit block 35 to compress the limit spring 36 until the whole limit block 35 is moved into the sliding groove 38, then the limit block 35 is separated from the limit wire mesh cover 34, and the limit wire mesh cover 34 can be removed to replace the filter element 32, which is convenient, fast and has high working efficiency.

[0049] The working principle of the embodiment of the present application is as follows:

[0050] The air extraction pump 24 is started to extract the gas in the kettle body 11 into the air outlet pipe 22. The air outlet pipe 22 guides the gas into the reuse tank 21. The heat receiving plate 23 contacts the gas led out by the air outlet pipe 22. The heat receiving plate 23 absorbs the heat energy in the gas and transfers the heat to the water supply pipe 13. After receiving the heat energy, the water supply pipe 13 preheats the water body entering the steam generator 12, thereby reducing the power consumption required to generate steam in the steam generator 12, thus completing the work of recycling the preheating in the gas and reducing the waste of heat energy resources.

[0051] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A steam dewaxing kettle for improving waste heat recovery, characterized in that: It includes a frame (1) and a kettle body (11) arranged on the frame (1). A steam generator (12) is arranged on the kettle body (11), and the steam generator (12) injects high-temperature steam into the kettle body (11). A recycling device (2) for recycling the high-temperature waste gas generated in the kettle body (11) is arranged on the frame (1). The recycling device (2) includes: A recycling box (21), and the recycling box (21) is arranged on the frame (1); An air outlet pipe (22), one end of the air outlet pipe (22) is arranged on the kettle body (11) and is communicated with the inside of the kettle body (11), the other end of the air outlet pipe (22) is connected to the recycling box (21) and is communicated with the inside of the recycling box (21). An air extraction pump (24) is arranged on the air outlet pipe (22), and the air extraction pump (24) is used for extracting the gas in the kettle body (11); A heating plate (23), the heating plate (23) is arranged on the recycling box (21), the heating plate (23) contacts the gas led out by the air outlet pipe (22). A water supply pipe (13) is arranged on the frame (1), the water supply pipe (13) is communicated with the steam generator (12), the water supply pipe (13) supplies water to the steam generator (12), the water supply pipe (13) passes through the recycling box (21), and the part of the water supply pipe (13) located in the recycling box (21) passes through the heating plate (23).

2. The steam dewaxing kettle for improving waste heat recovery according to claim 1, wherein: A water storage space for storing the condensed water formed on the heating plate (23) is reserved between the bottom of the heating plate (23) and the inner bottom wall of the recycling box (21). A water return pipe (14) is arranged on the recycling box (21), the water return pipe (14) is connected to the water supply pipe (13), and a water extraction pump (15) is arranged on the water return pipe (14). The water extraction pump (15) is used for extracting the condensed water in the recycling box (21) into the water return pipe (14).

3. The steam dewaxing kettle for improving waste heat recovery according to claim 2, characterized in that: The water supply pipe (13) is arranged obliquely, and the height of the end of the water supply pipe (13) connected to the steam generator (12) is higher than the height of the end of the water supply pipe (13) connected to the heating plate (23).

4. A steam dewaxing kettle for improving waste heat recovery according to claim 1, characterized in that: A gas filtering mechanism (3) for filtering the gas led out by the air outlet pipe (22) is arranged on the recycling box (21). The gas filtering mechanism (3) includes: A gas filtering frame (31), and the gas filtering frame (31) is arranged on the inner side wall of the recycling box (21); A filter element (32), the filter element (32) is filled in the gas filtering frame (31), and the filter element (32) is located at the pipe orifice of the air outlet pipe (22); A limiting component (33), the limiting component (33) is arranged on the gas filtering frame (31) and is used for limiting the position of the filter element (32) in the gas filtering frame (31).

5. The steam dewaxing kettle for improving waste heat recovery according to claim 4, characterized in that: The limiting component (33) includes: A limiting wire mesh cover (34), the limiting wire mesh cover (34) is sleeved on the gas filtering frame (31), and the mesh surface of the limiting wire mesh cover (34) abuts against the filter element (32); A limiting block (35), a horizontal limiting hole (37) is formed in a part of the limiting wire mesh cover (34) sleeved on the outer side wall of the air filter frame (31), a horizontal sliding groove (38) is formed in the outer side wall of the air filter frame (31), and the limiting block (35) is slidably arranged on the sliding groove (38); A limiting spring (36), the limiting spring (36) is arranged on the inner bottom wall of the sliding groove (38) and connected with the limiting block (35), and the limiting block (35) partially penetrates out of the sliding groove (38) under the action of the limiting spring (36) and is inserted and matched with the limiting hole (37).

6. The steam dewaxing kettle for improving waste heat recovery according to claim 5, characterized in that: An arc-shaped guiding surface (39) is formed on one side wall of the part of the limiting block (35) penetrating out of the sliding groove (38) and close to the surface of the limiting wire mesh cover (34).

7. A steam dewaxing kettle for improving waste heat recovery according to claim 1, characterized in that: A plurality of vertical flow guiding grooves (25) are uniformly formed on the plate surface of the heat receiving plate (23).

Images