Casting mold for forming mechanical shell of water pump

Abstract

The invention relates to the technical field of casting molds, in particular to a casting mold for water pump mechanical shell molding, which comprises a water pump shell casting mold body, a feed inlet is formed in the middle of the outer wall of the top of the water pump shell casting mold body, and a first sealing ring is fixedly connected to the upper part of the inner wall of the feed inlet; and a pouring pipe is movably inserted into the feeding hole. Heat is stored through phase change of paraffin instead of being directly transferred, so that the metal solution is kept in a liquid state for a longer time at the pouring pipe, the cooling rate of the metal solution is reduced, the solidification time of the metal solution is delayed, and the metal solution can continuously and stably flow into a cavity; and the problem of pouring interruption or unsmooth flowing caused by premature solidification of the metal solution is prevented, so that the metal solution can fully fill each corner of the cavity, especially a complicated structure part, the shape completeness and the size accuracy of the casting are ensured, and the overall integrity and the quality uniformity of the water pump mechanical shell casting are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of casting molds, and in particular relates to a casting mold for forming a water pump mechanical housing. Background Art

[0002] The casting mold for forming water pump mechanical housings is a precision mold specifically designed for pouring molten metal. Its core structure includes a cavity formed by the combined fixed and movable molds, and a gating system integrated into the fixed mold. The pouring tube serves as the "throat" for the molten metal to enter the cavity. It usually adopts a tapered or streamlined design to reduce turbulence. It is combined with a sprue, runner, and inner pouring tube to form a gradient diversion path. Common connection methods between the pouring tube and the mold include fixed connection, detachable connection, and semi-fixed connection. Through cavity design, liquid metal (such as cast iron, aluminum alloy, etc.) is precisely formed into the geometric structure of components such as pump body and pump cover. Its types include sand molds, metal molds, die casting and low-pressure casting molds, etc., which can be selected according to different materials and precision requirements. The core function is to ensure the dimensional accuracy, surface quality and internal density of the shell, and at the same time achieve efficient mass production through reusability. It is a key conversion tool for connecting metal materials and final products in water pump manufacturing.

[0003] However, the conventional device still has the following problems when used: The patent application publication number CN213559839U discloses a water pump body casting mold, which is chilled by a first chill and a second chill to eliminate the shrinkage cavity phenomenon. In addition, since the inlet of the first cavity is close to the inlet of the entire cavity, a second riser is added to cooperate to further eliminate the shrinkage cavity phenomenon.

[0004] In the prior art, after the mold cavity is filled with molten metal through a pouring tube, it is necessary to wait for the water pump mechanical housing casting to solidify. If the molten metal in the pouring tube solidifies too early, shrinkage is likely to occur at the far end of the water pump mechanical housing casting, thereby affecting the overall molding quality of the water pump mechanical housing casting.

[0005] Therefore, we need a casting mold for forming a water pump mechanical housing to solve the problem of premature solidification of the metal solution inside the pouring pipe, which can delay the solidification time of the metal solution inside the pouring pipe. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the present invention aims to provide a casting mold for forming a water pump mechanical housing, which has the advantage of delaying the solidification time of the metal solution inside the pouring pipe.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a casting mold for forming a water pump mechanical housing, comprising a water pump housing casting mold body, a feed port being provided in the middle of the top outer wall of the water pump housing casting mold body, a sealing ring being fixedly connected to the upper inner wall of the feed port, a pouring pipe being movably inserted into the interior of the feed port, a fixed plate being fixedly connected to the outer wall of the pouring pipe, the outer wall of the bottom of the fixed plate being flange-connected to the outer wall of the top of the water pump housing casting mold body, a cavity being provided on the outer wall of the top of the pouring pipe, a delayed cooling mechanism being provided inside the cavity, the delayed cooling mechanism comprising a replacement box, the outer wall of the replacement box being movably inserted into the interior of the cavity.

[0008] Preferably, a microhole 1 is provided on the outer wall of the replacement box, a fixed shell is fixedly connected to the upper inner wall of the replacement box, a placement groove is provided at one end inside the fixed shell, a magnetic block 2 is fixedly connected inside the placement groove, paraffin is provided inside the replacement box, and the outer wall of the top of the pouring tube is in movable contact with a sealing shell.

[0009] Preferably, the inner wall of the top of the sealing shell is fixedly connected to a sealing ring 2, the outer wall of the sealing ring 2 is movably plugged into the upper part of the interior of the replacement box, the inner wall of the top of the sealing shell is fixedly connected to an L-shaped plate, the outer wall of the L-shaped plate is movably plugged into the interior of the fixed shell, and the outer wall of one end of the L-shaped plate is magnetically connected to the outer wall of one end of the magnetic block 2.

[0010] Preferably, a second fixing hole is opened on the outer wall of the blocking shell, a first fixing hole is opened on the outer wall of the blocking shell on one side of the second fixing hole, and a V-shaped mark is provided on the first fixing hole.

[0011] Preferably, the outer wall of the top of the fixing plate is fixedly connected to the mounting plate one, a threaded hole is opened in the middle of one side of the mounting plate one, the internal thread of the threaded hole is connected to the insertion rod, the outer wall of one end of the insertion rod is movably plugged into the inside of the fixing hole two, and the outer wall of one end of the insertion rod is movably plugged into the inside of the fixing hole one.

[0012] Preferably, a rotating groove is provided on the insertion rod, and the interior of the rotating groove is rotatably connected to the second mounting plate, and the outer wall of one side of the second mounting plate is fixedly connected to a tightening spring, the interior of the tightening spring is movably connected to the outer wall of the insertion rod, and the outer wall of one end of the tightening spring is fixedly connected to the outer wall of one side of the mounting plate.

[0013] Preferably, a second microhole is provided at a position where the outer wall of the pouring tube contacts the feed port, and an inner wall on one side of the second microhole is aligned and connected with an outer wall on one side of the first microhole.

[0014] Preferably, a material guide column is movably inserted into the interior of the pouring pipe, and a magnetic coating is fixedly connected to the outer wall of the material guide column.

[0015] Preferably, the outer wall of the bottom of the material guide column is fixedly connected to a connecting rod, the outer wall of the bottom of the connecting rod is fixedly connected to a ceramic foam filter, and the outer wall of the bottom of the ceramic foam filter is in movable contact with the lower part of the inside of the pouring pipe.

[0016] Preferably, a mounting ring is fixedly connected to the upper inner wall of the pouring tube, a connecting frame is fixedly connected to the outer wall of the material guide column, a groove is provided on the outer wall of the top of the mounting ring, a magnetic block 1 is fixedly connected to the lower part of the groove, the outer wall of the connecting frame is movably plugged into the inside of the groove, and the outer wall of the bottom of the connecting frame is magnetically connected to the outer wall of the top of the magnetic block 1.

[0017] Compared with the prior art, the present invention has the following beneficial effects: Paraffin stores heat through phase change rather than directly transferring heat, allowing the molten metal to remain liquid for a longer time in the pouring pipe, reducing the cooling rate of the molten metal, thereby delaying the solidification time of the molten metal. It can ensure that the molten metal flows into the mold cavity continuously and stably, preventing the pouring interruption or poor flow caused by premature solidification of the molten metal, so that the molten metal can fully fill every corner of the mold cavity, especially the complex structural parts, ensuring the complete shape and accurate size of the casting, and improving the overall integrity and quality uniformity of the water pump mechanical housing casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0020] Figure 3 It is a schematic diagram of the feed port structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the pouring tube of the present invention.

[0022] Figure 5 It is a schematic diagram of the L-shaped plate structure of the present invention.

[0023] Figure 6 It is a schematic diagram of the top structure of the pouring tube of the present invention.

[0024] Figure 7 Schematic diagram of the groove structure of the present invention.

[0025] Figure 8 It is a schematic diagram of the cavity structure of the present invention.

[0026] Figure 9 It is a schematic structural diagram of the replacement box of the present invention.

[0027] Figure 10 It is a schematic diagram of the fixed shell structure of the present invention.

[0028] Figure 11 It is a structural schematic diagram of the mounting plate of the present invention.

[0029] Figure 12 This is a schematic diagram of the second cavity structure of the present invention.

[0030] Figure 13 This is a schematic diagram of the sealing shell structure of the present invention.

[0031] In the figure: 1. Water pump housing casting mold body; 11. Feed inlet; 12. Sealing ring 1; 2. Blocking shell; 21. Fixing hole 1; 22. Sealing ring 2; 23. L-shaped plate; 24. Fixing shell; 25. Magnetic block 2; 26. Fixing hole 2; 3. Fixing plate; 31. Pouring tube; 32. Mounting ring; 33. Material guide column; 34. Connecting frame; 35. Connecting rod; 36. Ceramic foam filter; 37. Magnetic block 1; 38. Groove; 39. Cavity 1; 310. Micropore 2; 4. Mounting plate 1; 41. Insert rod; 42. Tightening spring; 43. Mounting plate 2; 44. Heat sink; 45. Cavity 2; 5. Replacement box; 51. Micropore 1. DETAILED DESCRIPTION

[0032] In order to clearly and completely describe the objectives and technical solutions of the present invention and make its advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit 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.

[0033] Example 1: Please refer to Figures 1 to 13 The present invention provides a technical solution for a casting mold for forming a water pump mechanical housing: it includes a water pump housing casting mold body 1, a feed port 11 is opened in the middle of the top outer wall of the water pump housing casting mold body 1, a sealing ring 12 is fixedly connected to the upper inner wall of the feed port 11, a pouring pipe 31 is movably inserted into the interior of the feed port 11, a fixed plate 3 is fixedly connected to the outer wall of the pouring pipe 31, the outer wall of the bottom of the fixed plate 3 is flange-connected to the outer wall of the top of the water pump housing casting mold body 1, a cavity 39 is opened on the outer wall of the top of the pouring pipe 31, a delayed cooling mechanism is arranged inside the cavity 39, and the delayed cooling mechanism includes a replacement box 5, and the outer wall of the replacement box 5 is movably inserted into the interior of the cavity 39.

[0034] The fixing plate 3 is flange-connected to the top of the water pump casing casting mold body 1, so that the pouring pipe 31 is tightly fixed inside the feed port 11, thereby completing the connection between the pouring pipe 31 and the water pump casing casting mold body 1. The detachable pouring pipe 31 increases its flexibility, making it convenient for workers to disassemble it for cleaning or replace it on another water pump casing casting mold body 1.

[0035] Example 2: On the basis of Example 1, a microhole 1 51 is provided on the outer wall of the replacement box 5, a fixed shell 24 is fixedly connected to the upper part of the inner wall of the replacement box 5, a placement groove is provided at one end inside the fixed shell 24, a magnetic block 25 is fixedly connected to the inside of the placement groove, paraffin is provided inside the replacement box 5, the outer wall of the top of the pouring tube 31 is movably in contact with the blocking shell 2, the inner wall of the top of the blocking shell 2 is fixedly connected to the sealing ring 22, the outer wall of the sealing ring 22 is movably plugged into the upper part of the interior of the replacement box 5, the inner wall of the top of the blocking shell 2 is fixedly connected to the L-shaped plate 23, the outer wall of the L-shaped plate 23 is movably plugged into the interior of the fixed shell 24, the outer wall of one end of the L-shaped plate 23 is magnetically connected to the outer wall of one end of the magnetic block 25, a microhole 2 310 is provided at the position where the outer wall of the pouring tube 31 contacts the feed port 11, the inner wall of one side of the microhole 2 310 is aligned and connected with the outer wall of one side of the microhole 1 51.

[0036] When the high-temperature metal solution flows into the pouring tube 31, the paraffin absorbs the heat of the metal solution and melts, but its own temperature does not rise. The paraffin stores heat through phase change rather than directly transferring heat, so that the metal solution remains liquid for a longer time in the pouring tube 31, reducing the cooling rate of the metal solution, thereby delaying the solidification time of the metal solution, ensuring that the metal solution flows into the mold cavity continuously and stably, preventing the interruption of pouring or poor flow due to premature solidification of the metal solution, so that the metal solution can fully fill every corner of the mold cavity, especially the complex structural parts, ensuring the complete shape and accurate size of the casting, and improving the overall integrity and quality uniformity of the water pump mechanical housing casting.

[0037] Example three: On the basis of Example two, a fixing hole 26 is provided on the outer wall of the blocking shell 2, and a fixing hole 21 is provided on the outer wall of the blocking shell 2 on one side of the fixing hole 26, and a V-shaped mark is provided on the fixing hole 21. The outer wall of the top of the fixing plate 3 is fixedly connected to the mounting plate 4, and a threaded hole is provided in the middle of one side of the mounting plate 4. The internal thread of the threaded hole is connected to the plug rod 41, and the outer wall of one end of the plug rod 41 is movably plugged into the inside of the fixing hole 26, and the outer wall of one end of the plug rod 41 is movably plugged into the inside of the fixing hole 21. A rotating groove is provided on the plug rod 41, and the internal rotation of the rotating groove is connected to the mounting plate 2 43. The outer wall of one side of the mounting plate 2 43 is fixedly connected to the tightening spring 42, and the inner part of the tightening spring 42 is movably sleeved with the outer wall of the plug rod 41, and the outer wall of one end of the tightening spring 42 is fixedly connected to the outer wall of one side of the mounting plate 4.

[0038] The staff rotates the insertion rod 41 counterclockwise to remove the insertion rod 41 from the interior of the fixing hole 21. The threaded connection between the insertion rod 41 and the mounting plate 4 can enhance the fixation of the fixing hole 21 by the insertion rod 41 when the insertion rod 41 is inserted into the interior of the fixing hole 21, thereby preventing the insertion rod 41 from shaking and slipping out of the interior of the fixing hole 21 during operation, thereby correspondingly enhancing the fixing effect of the fixing hole 21. The elasticity of the tightening spring 42 itself will apply a thrust to the insertion rod 41 to prevent the threaded connection between the insertion rod 41 and the mounting plate 4 from wearing out. The tightening spring 42 can still fix the insertion rod 41 inside the fixing hole 1 21 or the fixing hole 2 26, thereby increasing the stability of the insertion rod 41 fixed to the fixing hole 1 21 or the fixing hole 2 26.

[0039] Example 4: Based on Example 2, a material guide column 33 is movably inserted into the interior of the pouring tube 31, and the outer wall of the material guide column 33 is fixedly connected with a magnetic coating. The outer wall of the bottom of the material guide column 33 is fixedly connected with a connecting rod 35, and the outer wall of the bottom of the connecting rod 35 is fixedly connected with a ceramic foam filter 36. The outer wall of the bottom of the ceramic foam filter 36 is in movably contact with the lower part of the interior of the pouring tube 31.

[0040] The guide column 33 provided inside the pouring tube 31 has a spiral track provided on the guide column 33, which causes the molten metal to rotate along the spiral track on the guide column 33 and enter the cavity inside the water pump housing casting mold body 1. The molten metal generates centrifugal force during the rotation process, and then uses the centrifugal force to expel gas, thereby reducing the bubble content inside the molten metal. Since the gas is expelled, the formation of a large number of pores inside the water pump mechanical housing during molding is avoided, thereby reducing the porosity of the water pump mechanical housing after molding, which helps to improve the quality and performance of the water pump mechanical housing. The magnetic coating has a magnetic adsorption force, which will adsorb the iron particles inside the metal solution, preventing the iron particles inside the metal solution from entering the cavity of the water pump housing casting mold body 1 with the metal solution. By intercepting the iron particles inside the metal solution, the possibility of impurities entering the molded parts is reduced from the source. By effectively intercepting and adsorbing the iron particles, the purity of the metal solution is significantly increased. The metal solution with higher purity can better fill the mold cavity during the casting process, reducing problems such as uneven filling caused by impurities, laying the foundation for manufacturing high-quality water pump mechanical housings. After reducing impurities, the housing can better resist erosion and wear from the external environment, extend its service life, and improve the overall performance and stability of the water pump.

[0041] Example 5: On the basis of Example 4, a mounting ring 32 is fixedly connected to the upper inner wall of the pouring tube 31, a connecting frame 34 is fixedly connected to the outer wall of the material guide column 33, a groove 38 is provided on the outer wall at the top of the mounting ring 32, a magnetic block 37 is fixedly connected to the lower part of the groove 38, the outer wall of the connecting frame 34 is movably plugged into the inside of the groove 38, and the outer wall of the bottom of the connecting frame 34 is magnetically connected to the outer wall of the top of the magnetic block 37.

[0042] By manually pulling the connecting frame 34 upward, the staff can separate the connecting frame 34 from the magnetic block 37, and at the same time drive the material guide column 33 to move upward inside the pouring tube 31. Since the material guide column 33 and the ceramic foam filter 36 are fixedly connected by the connecting rod 35, the material guide column 33 drives the ceramic foam filter 36 to move from the inside of the pouring tube 31, making it convenient for the staff to clean the material guide column 33 and the ceramic foam filter 36.

[0043] Example 6: Based on Example 3, a second cavity 45 is defined inside the insertion rod 41 , a heat sink 44 is fixedly connected to the inner wall of one end of the second cavity 45 , and copper powder is disposed inside the second cavity 45 .

[0044] Through the cavity 2 45 opened inside the insertion rod 41 and the copper powder filled inside the cavity 2 45, the insertion rod 41 can be inserted into the fixing hole 1 21 and the fixing hole 2 26. The copper powder absorbs the heat at the fixing hole 1 21 through the contact surface with the fixing hole 1 21, thereby avoiding excessive heat inside the fixing hole 1 21, causing thermal deformation of the fixing hole 1 21 and affecting the fixing effect of the insertion rod 41 on the fixing hole 1 21. Accordingly, after the heat at the fixing hole 1 21 is absorbed by the copper powder, it is dissipated through the heat dissipation plate 44, thereby reducing the thermal deformation at the fixing hole 1 21 and increasing the fixing effect of the insertion rod 41 and the fixing hole 1 21.

[0045] The working principle and usage process of the present invention are as follows: during operation, first, the pouring pipe 31 drives the fixed plate 3 to be inserted into the interior of the feed port 11, so that the outer wall of the pouring pipe 31 fits tightly with the sealing ring 12, and the sealing effect of the sealing ring 12 enhances the sealing between the feed port 11 and the pouring pipe 31, so that the connection between the pouring pipe 31 and the feed port 11 is tighter, and then the fixed plate 3 is flange-connected to the top of the water pump casing casting mold body 1, so that the pouring pipe 31 is tightly fixed inside the feed port 11, thereby completing the connection between the pouring pipe 31 and the water pump casing casting mold body 1. The detachable pouring pipe 31 increases its own flexibility, making it convenient for workers to disassemble it for cleaning or replace it on another water pump casing casting mold body 1.

[0046] When the molten metal enters the internal cavity of the water pump casing casting mold body 1 through the inside of the pouring tube 31, the guide column 33 arranged inside the pouring tube 31, because the guide column 33 is provided with a spiral track, the molten metal will rotate along the spiral track on the guide column 33 and enter the internal cavity of the water pump casing casting mold body 1. The molten metal will generate centrifugal force during the rotation process, and then use the centrifugal force to discharge the gas, thereby reducing the bubble content inside the metal solution. Since the gas is discharged, the appearance of a large number of pores inside the water pump mechanical casing during molding is avoided, thereby reducing the porosity of the water pump mechanical casing after molding, which helps to improve the quality and performance of the water pump mechanical casing.

[0047] Then, a magnetic coating is provided on the outer wall of the spiral track of the guide column 33. This magnetic coating is a composite coating made of NdFeB magnetic powder and high-temperature resistant resin. It has magnetic adsorption effect and high-temperature resistance. When the metal solution rotates and flows downward on the outer wall of the spiral track, the magnetic adsorption force of the magnetic coating will adsorb the iron particles inside the metal solution, thereby preventing the iron particles inside the metal solution from entering the cavity of the water pump housing casting mold body 1 with the metal solution. By intercepting the iron particles inside the metal solution, the possibility of impurities entering the molded parts is reduced from the source. By effectively intercepting and adsorbing the iron particles, the purity of the metal solution is significantly increased. The metal solution with higher purity can better fill the mold cavity during the casting process, reduce problems such as uneven filling caused by impurities, and lay the foundation for manufacturing high-quality water pump mechanical housings. After reducing impurities, the housing can better resist erosion and wear from the external environment, extend its service life, and improve the overall performance and stability of the water pump.

[0048] Due to the ceramic foam filter 36 fixedly connected to the bottom of the guide column 33 by the connecting rod 35, after the metal solution passes through the guide column 33, it must be filtered by the ceramic foam filter 36 before entering the cavity. Since the ceramic foam filter 36 has a complex three-dimensional network structure, its pores are small and interconnected. When the metal solution flows through, the oxide inclusions will be intercepted by the filter, adsorbed on the pore surface or retained inside the pores, thereby greatly reducing the content of oxide inclusions in the metal solution, further purifying the metal solution, and ensuring that the metal solution entering the cavity is of higher quality.

[0049] When the molten metal moves downward through the guide column 33, it transfers the internal heat to the paraffin filled in the replacement box 5 through the inner wall of the pouring tube 31. The solid paraffin becomes liquid after absorbing the heat of the molten metal, thereby delaying the solidification time of the molten metal at the pouring tube 31 and preventing overheating of the cavity. As the paraffin changes from solid to liquid, it absorbs a large amount of heat, but the temperature remains constant. When the high-temperature molten metal flows into the pouring tube 31, the paraffin absorbs the heat of the molten metal and melts, but its own temperature does not rise. The paraffin stores heat through phase change rather than directly transferring heat, so that the molten metal remains liquid for a longer time in the pouring tube 31, reducing the cooling rate of the molten metal, thereby delaying the solidification time of the molten metal, ensuring that the molten metal flows into the cavity continuously and stably, preventing the problem of pouring interruption or poor flow due to premature solidification of the molten metal, so that the molten metal can fully fill every corner of the cavity, especially the complex structural parts, ensuring the complete shape and accurate size of the casting, and improving the overall integrity and quality uniformity of the water pump mechanical housing casting.

[0050] When the insertion rod 41 is inserted into the fixing hole 1 21 , the microhole 1 51 on the replacement box 5 will be aligned with the microhole 2 310 on the pouring tube 31 , and then the V-shape set on the fixing hole 1 21 can quickly and accurately distinguish the fixing hole 1 21 and the fixing hole 2 26 , and clearly know which is used for paraffin outflow and which is used for paraffin closing. The paraffin melted inside the replacement box 5 seeps through the microhole 1 51 and the microhole 2 310 to the contact surface between the pouring tube 31 and the feed port 11, thereby increasing the lubrication of the contact position between the pouring tube 31 and the feed port 11, avoiding wear between the pouring tube 31 and the feed port 11 during operation, correspondingly extending the service life of the pouring tube 31, and reducing the equipment replacement cost. In addition, since paraffin has good chemical stability and oxidation resistance, the lubricating film formed on the contact surface can not only reduce wear, but also prevent rust and corrosion of the contact surface.

[0051] Through the cavity 2 45 opened inside the insertion rod 41 and the copper powder filled inside the cavity 2 45, the insertion rod 41 can be inserted into the fixing hole 1 21 and the fixing hole 2 26. The copper powder absorbs the heat at the fixing hole 1 21 through the contact surface with the fixing hole 1 21, thereby avoiding excessive heat inside the fixing hole 1 21, causing thermal deformation of the fixing hole 1 21 and affecting the fixing effect of the insertion rod 41 on the fixing hole 1 21. Accordingly, after the heat at the fixing hole 1 21 is absorbed by the copper powder, it is dissipated through the heat dissipation plate 44, thereby reducing the thermal deformation at the fixing hole 1 21 and increasing the fixing effect of the insertion rod 41 and the fixing hole 1 21.

[0052] By rotating the insertion rod 41 counterclockwise, the staff can move the insertion rod 41 out of the fixing hole 21. Through the threaded connection between the insertion rod 41 and the mounting plate 4, when the insertion rod 41 is inserted into the fixing hole 21, the insertion rod 41 can be more firmly fixed to the fixing hole 21, preventing the insertion rod 41 from shaking and slipping out of the fixing hole 21 during operation, thereby correspondingly increasing the fixing effect on the fixing hole 21.

[0053] Then, through the cooperation between the mounting plate 2 43 and the tightening spring 42, when the insertion rod 41 rotates, the tightening spring 42 remains stationary on the insertion rod 41 and does not rotate with the insertion rod 41. When the insertion rod 41 is inserted into the fixing hole 1 21 or the fixing hole 2 26, the elasticity of the tightening spring 42 itself will apply a thrust to the insertion rod 41 to prevent the threaded connection between the insertion rod 41 and the mounting plate 1 4 from wearing out. The tightening spring 42 can still fix the insertion rod 41 in the fixing hole 1 21 or the fixing hole 2 26, thereby increasing the stability of the insertion rod 41 fixed to the fixing hole 1 21 or the fixing hole 2 26.

[0054] When the insertion rod 41 is taken out from the inside of the fixing hole 1 21, the fixation between the insertion rod 41 and the fixing hole 1 21 can be released. At this time, the staff rotates the blocking shell 2. Since the L-shaped plate 23 on the blocking shell 2 is plugged into the fixed shell 24 on the replacement box 5, the fixing hole 1 21 can drive the replacement box 5 to rotate while the blocking shell 2 rotates. When the fixing hole 26 on the blocking shell 2 is aligned with the insertion rod 41, the rotation of the blocking shell 2 is stopped, and the insertion rod 41 is inserted into the inside of the fixing hole 26 to fix the blocking shell 2. At this time, the micropore 1 51 and the micropore 2 310 on the replacement box 5 are staggered, and the paraffin inside the replacement box 5 cannot continue to seep out, thereby increasing the flexibility of the paraffin outflow, so that the staff can decide whether to lubricate the pouring pipe 31 according to the on-site conditions, thereby improving the pertinence and effectiveness of the lubrication.

[0055] By releasing the fixing of the blocking shell 2 and removing the blocking shell 2 from the pouring pipe 31, due to the L-shaped shape of the L-shaped plate 23, when the blocking shell 2 moves upward, the L-shaped plate 23 pulls the fixed shell 24 upward. Due to the fixed connection between the fixed shell 24 and the replacement box 5, when the fixed shell 24 moves upward, it can drive the replacement box 5 to move upward inside the cavity 39, thereby leaving the interior of the cavity 39. Then, the staff can fix the blocking shell 2 with one hand and rotate the replacement box 5 with the other hand. By changing the box 5, the changing box 5 can drive the fixed shell 24 to rotate on the blocking shell 2, thereby separating the L-shaped plate 23 from the magnetic block 25, and moving all the L-shaped plates 23 to one side of the fixed shell 24. Then, the changing box 5 is pulled downward to separate the changing box 5 from the blocking shell 2, thereby facilitating the cleaning or replacement of the paraffin inside the changing box 5 by the staff, and avoiding the paraffin repeatedly absorbing heat and deforming, which will cause the paraffin to produce residue after reaction inside the paraffin, affecting the seepage of the melted paraffin from the micropore 1 51.

[0056] It should be noted that: the sealing ring 22 set on the top of the sealing shell 2 is used to increase the sealing between the sealing shell 2 and the replacement box 5, preventing paraffin from flowing out from the contact surface between the replacement box 5 and the sealing shell 2, and then the magnetic connection between the magnetic block 25 and the L-shaped plate 23 is used to increase the internal stability of the L-shaped plate 23 in the fixed shell 24. When the sealing shell 2 drives the replacement box 5 to rotate inside the cavity 39 to adjust the position of the microhole 51, it will not leave the interior of the fixed shell 24.

[0057] Since the guide column 33 is inserted into the groove 38 on the mounting ring 32 through the connecting frame 34, and the guide column 33 is fixed inside the casting tube 31 through the magnetic connection between the connecting frame 34 and the magnetic block 37, the connection between the groove 38 and the connecting frame 34 prevents the guide column 33 from rotating when impacted by the metal solution, which correspondingly increases the stability of the guide column 33 inside the casting tube 31. Since the metal solution impacts from top to bottom, it will only press the connecting frame 34 tighter into the groove 38. The magnetic connection between the magnetic block 37 and the connecting frame 34 further prevents the risk of the connecting frame 34 falling off from the groove 38.

[0058] By manually pulling the connecting frame 34 upward, the staff can separate the connecting frame 34 from the magnetic block 37, and at the same time drive the material guide column 33 to move upward inside the pouring tube 31. Since the material guide column 33 and the ceramic foam filter 36 are fixedly connected by the connecting rod 35, the material guide column 33 drives the ceramic foam filter 36 to move from the inside of the pouring tube 31, making it convenient for the staff to clean the material guide column 33 and the ceramic foam filter 36.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A casting mold for forming a water pump mechanical housing, comprising a water pump housing casting mold body (1), characterized in that: A feed port (11) is provided in the middle of the top outer wall of the water pump housing casting mold body (1), a sealing ring (12) is fixedly connected to the upper inner wall of the feed port (11), a pouring pipe (31) is movably inserted into the interior of the feed port (11), a fixed plate (3) is fixedly connected to the outer wall of the pouring pipe (31), the outer wall of the bottom of the fixed plate (3) is flange-connected to the outer wall of the top of the water pump housing casting mold body (1), a cavity (39) is provided on the outer wall of the top of the pouring pipe (31), and a cooling delay mechanism is provided inside the cavity (39); The delayed cooling mechanism comprises a replacement box (5), the outer wall of the replacement box (5) being movably plugged into the interior of cavity one (39).

2. The casting mold for forming a water pump mechanical housing according to claim 1, characterized in that: The outer wall of the replacement box (5) is provided with a microhole 1 (51), the upper part of the inner wall of the replacement box (5) is fixedly connected to a fixed shell (24), one end of the interior of the fixed shell (24) is provided with a placement groove, the interior of the placement groove is fixedly connected to a magnetic block 2 (25), the interior of the replacement box (5) is provided with paraffin, and the outer wall of the top of the pouring pipe (31) is in movable contact with a blocking shell (2).

3. The casting mold for forming a water pump mechanical housing according to claim 2, characterized in that: The inner wall of the top of the blocking shell (2) is fixedly connected to a sealing ring 2 (22), the outer wall of the sealing ring 2 (22) is movably connected to the upper part of the interior of the replacement box (5), the inner wall of the top of the blocking shell (2) is fixedly connected to an L-shaped plate (23), the outer wall of the L-shaped plate (23) is movably connected to the interior of the fixed shell (24), and the outer wall of one end of the L-shaped plate (23) is magnetically connected to the outer wall of one end of the magnetic block 2 (25).

4. The casting mold for forming a water pump mechanical housing according to claim 2, characterized in that: The outer wall of the blocking shell (2) is provided with a second fixing hole (26), and the outer wall of the blocking shell (2) is provided with a first fixing hole (21) on one side of the second fixing hole (26), and a V-shaped mark is provided on the first fixing hole (21).

5. The casting mold for forming a water pump mechanical housing according to claim 4, characterized in that: The outer wall of the top of the fixing plate (3) is fixedly connected to the mounting plate 1 (4), a threaded hole is provided in the middle of one side of the mounting plate 1 (4), the inner thread of the threaded hole is connected to the insertion rod (41), the outer wall of one end of the insertion rod (41) is movably plugged into the inner part of the fixing hole 2 (26), and the outer wall of one end of the insertion rod (41) is movably plugged into the inner part of the fixing hole 1 (21).

6. The casting mold for forming a water pump mechanical housing according to claim 5, characterized in that: A rotation groove is provided on the insertion rod (41), and the interior of the rotation groove is rotatably connected to the second mounting plate (43), and the outer wall of one side of the second mounting plate (43) is fixedly connected to a tightening spring (42), and the interior of the tightening spring (42) is movably connected to the outer wall of the insertion rod (41), and the outer wall of one end of the tightening spring (42) is fixedly connected to the outer wall of one side of the mounting plate (4).

7. The casting mold for forming a water pump mechanical housing according to claim 2, characterized in that: A second micropore (310) is provided at a position where the outer wall of the pouring tube (31) contacts the feed port (11), and an inner wall on one side of the second micropore (310) is aligned and connected with an outer wall on one side of the first micropore (51).

8. The casting mold for forming a water pump mechanical housing according to claim 1, characterized in that: A material guide column (33) is movably inserted into the interior of the pouring pipe (31), and a magnetic coating is fixedly connected to the outer wall of the material guide column (33).

9. The casting mold for forming a water pump mechanical housing according to claim 8, characterized in that: The outer wall of the bottom of the material guide column (33) is fixedly connected to a connecting rod (35), the outer wall of the bottom of the connecting rod (35) is fixedly connected to a ceramic foam filter (36), and the outer wall of the bottom of the ceramic foam filter (36) is in movable contact with the lower part of the interior of the pouring pipe (31).

10. The casting mold for forming a water pump mechanical housing according to claim 8, characterized in that: A mounting ring (32) is fixedly connected to the upper inner wall of the pouring tube (31), a connecting frame (34) is fixedly connected to the outer wall of the material guide column (33), a groove (38) is provided on the outer wall of the top of the mounting ring (32), a magnetic block (37) is fixedly connected to the lower inner part of the groove (38), the outer wall of the connecting frame (34) is movably plugged into the inner part of the groove (38), and the outer wall of the bottom of the connecting frame (34) is magnetically connected to the outer wall of the top of the magnetic block (37).

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