A casting mold for producing corrosion-resistant pump cover

Abstract

The present invention provides a casting mold for producing corrosion-resistant pump covers, which belongs to the technical field of casting molds. A casting mold for producing corrosion-resistant pump covers, comprising an upper mold, a lower mold, a pouring cavity, and a pouring part, wherein the pouring part comprises a first drainage cavity, a second drainage cavity, a pouring port, and a baffle; in the present invention, during the pouring process, when the baffle rotates to a vertical state, it can cooperate with the spacer to form a drainage port, so that the slag of the molten metal has more opportunities to float or deposit in the first drainage cavity, thereby reducing the possibility of impurities entering the pouring cavity, and reducing the risk of defects such as pores and inclusions in the casting. After the pouring is completed, the baffle can be quickly turned back to a horizontal state to seal and cover the pouring port. This design not only effectively prevents the residual solution in the pouring part from directly contacting the external air, avoiding oxidation and pollution problems, but also helps to protect the quality of the mold and casting, and extend the service life of the mold.

Description

Technical Field

[0001] The invention relates to the technical field of casting molds, and in particular to a casting mold for producing a corrosion-resistant pump cover. Background Art

[0002] Casting is a forming method that pours molten metal into a pre-made mold and waits for the metal to cool and solidify to obtain parts or blanks of the desired shape and size. In the production of corrosion-resistant pump covers, casting molds are required.

[0003] However, the pouring channel design inside the pouring tube in the traditional casting mold is usually interconnected from top to bottom. This design makes it difficult to effectively block the slag in the metal pouring solution during pouring. If these slags enter the pouring cavity, they will directly affect the quality of the casting, such as producing defects such as pores and inclusions. At the same time, after the pouring is completed, the top of the pouring tube is in an open state, which makes it easy for the residual solution in the pouring tube to directly contact with the outside air. This contact will accelerate the oxidation process of the solution, which not only shortens the service life of the pouring tube, but also may have an adverse effect on subsequent pouring operations, such as introducing oxidative impurities and affecting the quality of the casting. To this end, in response to this problem, the present invention proposes a casting mold for the production of corrosion-resistant pump covers. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a casting mold for producing a corrosion-resistant pump cover that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A casting mold for producing corrosion-resistant pump covers, comprising an upper mold and a lower mold, wherein when the upper mold and the lower mold are overlapped, a pouring cavity is formed, and a pouring part connected to the upper mold is connected to the pouring cavity, wherein a first drainage cavity and a second drainage cavity are sequentially arranged in the pouring part from top to bottom, the first drainage cavity and the second drainage cavity are communicated with each other, and the second drainage cavity and the pouring cavity are communicated with each other, a pouring port connected to the first drainage cavity is arranged at the top of the pouring part, and a matching baffle is arranged at the pouring port, when the baffle is rotated and located at the pouring port in a horizontal state, the pouring port can be sealed and blocked, and when the baffle is rotated and located in the first drainage cavity in a vertical state, a pair of sealing plates that are in contact with the baffle are fixed to the inner wall of the first drainage cavity, and a spacer that matches the baffle is fixed to the inner wall of the second drainage cavity, and a drainage port with a gap is formed between the top of the spacer and the bottom surface corresponding to the baffle in the vertical state.

[0007] Preferably, the inner channel end diameter of the first drainage cavity gradually decreases from top to bottom, and the inner channel end diameter of the second drainage cavity is consistent with the lower end diameter of the first drainage cavity.

[0008] Preferably, an arc block is provided on the left side of the spacer block close to the drainage port, and the arc block is bent upward.

[0009] Preferably, a rotating groove is provided on the side wall of the pouring port, a connecting shaft is rotatably provided between the inner walls of the rotating groove, the baffle is fixed on the connecting shaft, and an adjusting mechanism is provided at one end of the connecting shaft extending outside the pouring part.

[0010] Preferably, the adjustment mechanism comprises a mounting plate fixed on the upper mold, a driving part is mounted on the mounting plate, and an output end of the driving part is connected to an extended end of the connecting shaft.

[0011] Preferably, when the connecting shaft rotates, a movable cavity is provided on the top of the spacer block, a slag guide plate is slidably provided on the inner wall of the movable cavity, a spring is fixed between the bottom of the slag guide plate and the bottom wall of the movable cavity, a slag discharge port connected to the movable cavity is provided on the outer surface of the casting part, an arc-shaped shielding edge that fits with the inner wall of the movable cavity is fixed on the bottom of the slag guide plate, and an air guide mechanism is provided between the bottom of the spacer block and the surface of the connecting shaft for driving the slag guide plate to move in the movable cavity.

[0012] Preferably, a guiding surface inclined downward is provided on the top of the slag guide plate, and the guiding surface corresponds to the direction and position of the slag discharge port.

[0013] Preferably, when the baffle plate rotates through the connecting shaft and overlaps with the two sealing plates, the air guide mechanism that is simultaneously linked with the connecting shaft will drive the slag guide plate to move to a position close to the top of the movable chamber, and the arc-shaped shielding edge at the bottom of the slag guide plate will seal the slag discharge port.

[0014] Preferably, when the baffle plate is rotated by the connecting shaft and coincides with the pouring port, the air guide mechanism simultaneously linked with the connecting shaft drives the slag guide plate to move to the bottom port position of the movable cavity close to the slag discharge port.

[0015] Preferably, the air guide mechanism includes a circular shell which is sleeved on the connecting shaft and fixed to the mounting plate, a plurality of blades which are distributed in a circumference and fit with the inner wall of the circular shell are fixed on the connecting shaft, a No. 1 air guide pipe is connected between the lower surface of the circular shell and the bottom of the spacer, a No. 2 air guide pipe is connected to the upper surface of the circular shell, and the other end of the No. 2 air guide pipe is connected to an arc-shaped spray pipe which is located above the pouring part.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0017] In the present invention, during the pouring process, when the baffle rotates to a vertical state, it can cooperate with the spacer to form a drainage port, so that the slag of the molten metal has more opportunities to float or settle in the first drainage cavity, thereby reducing the possibility of impurities entering the pouring cavity, reducing the risk of defects such as pores and inclusions in the casting. After the pouring is completed, the baffle can be quickly turned back to a horizontal state to seal and block the pouring port. This design not only effectively prevents the residual solution in the pouring part from directly contacting the external air, avoiding oxidation and pollution problems, but also helps to protect the quality of the mold and the casting, and prolong the service life of the mold.

[0018] In addition, the two states of the baffle can also work together with the gas guide mechanism to accurately control the position of the slag guide plate. When the baffle is in a vertical state, the gas guide mechanism prompts the slag guide plate to move to a position parallel to the top of the spacer block, ensuring that the smooth flow of the molten metal is not hindered. When the baffle is switched to a horizontal state, the gas guide mechanism drives the slag guide plate downward, and uses the inclined guide surface to smoothly discharge the intercepted slag from the slag discharge port. This coordinated cooperation not only significantly improves the pouring quality of the molten metal, but also greatly improves production efficiency and effectively reduces the risk of oxidation caused by contact between the slag and the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall cross-sectional structure of a casting mold for producing a corrosion-resistant pump cover provided by the present invention;

[0020] Figure 2 A schematic diagram of the pouring structure of a casting mold for producing a corrosion-resistant pump cover provided by the present invention;

[0021] Figure 3 A schematic diagram of the connection structure between a sealing plate and a first drainage cavity of a casting mold for producing a corrosion-resistant pump cover provided by the present invention;

[0022] Figure 4 A schematic diagram of the cross-sectional connection structure of a spacer and a movable cavity of a casting mold for producing a corrosion-resistant pump cover provided by the present invention Figure 1 ;

[0023] Figure 5 A schematic diagram of the connection structure between a baffle and a connecting shaft of a casting mold for producing a corrosion-resistant pump cover provided by the present invention;

[0024] Figure 6 A schematic diagram of the connection structure of the arc block and the spacer block of a casting mold for producing a corrosion-resistant pump cover provided by the present invention;

[0025] Figure 7 For the present invention Figure 1A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 8 A schematic diagram of the cross-sectional connection structure of a spacer and a movable cavity of a casting mold for producing a corrosion-resistant pump cover provided by the present invention Figure 2 ;

[0027] Fig. 9 A schematic diagram of the cross-sectional structure of a circular shell of a casting mold for producing a corrosion-resistant pump cover provided by the present invention.

[0028] In the figure: 1. upper mold; 2. lower mold; 3. pouring cavity; 4. pouring part; 41. first drainage cavity; 42. second drainage cavity; 43. pouring port; 44. baffle; 45. sealing plate; 46. spacer; 47. drainage port; 48. arc block; 49. rotating groove; 410. connecting shaft; 411. moving cavity; 412. slag guide plate; 413. spring; 414. slag discharge port; 415. arc-shaped shielding edge; 416. guiding surface; 5. adjusting mechanism; 51. mounting plate; 52. driving part; 6. air guide mechanism; 61. circular shell; 62. blade; 63. No. 1 air guide pipe; 64. No. 2 air guide pipe; 65. spray pipe. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0030] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0031] In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] Example 1: Reference Figure 1 , Figure 2 , Figure 4 and Figure 8A casting mold for producing corrosion-resistant pump covers comprises an upper mold 1 and a lower mold 2. When the upper mold 1 and the lower mold 2 are overlapped, a pouring cavity 3 is formed. The shape and size of the pouring cavity 3 match the final required corrosion-resistant pump cover. The upper mold 1 is connected with a pouring part 4 connected with the pouring cavity 3, wherein a first drainage cavity 41 and a second drainage cavity 42 are sequentially arranged in the pouring part 4 from top to bottom, the first drainage cavity 41 and the second drainage cavity 42 are connected to each other, the second drainage cavity 42 is connected to the pouring cavity 3, the internal channel end diameter of the first drainage cavity 41 gradually decreases from top to bottom, the internal channel end diameter of the second drainage cavity 42 is consistent with the lower end diameter of the first drainage cavity 41, and a pouring port 43 connected with the first drainage cavity 41 is provided at the top of the pouring part 4.

[0033] When the above technical solution is in use, the upper mold 1 and the lower mold 2 are aligned and fixed, and then the molten metal is passed through the pouring port 43 into the first drainage cavity 41. The internal channel end diameter of the first drainage cavity 41 gradually decreases from top to bottom. This gradual design slows down the flow rate of the molten metal and avoids the splashing and turbulence that may be caused by the molten metal directly impacting the bottom of the pouring cavity 3. At the same time, this design also allows the slag in the molten metal to have more opportunities to float or settle, thereby reducing the possibility of them entering the pouring cavity 3, and reducing the risk of defects such as pores and inclusions in the casting. As the molten metal continues to flow into the second drainage cavity 42, since the internal channel end diameter of the second drainage cavity 42 is consistent with the lower end diameter of the first drainage cavity 41, the flow of the molten metal in the second drainage cavity 42 maintains continuity without generating additional resistance or turbulence, ensuring that the molten metal can flow smoothly into the pouring cavity 3 and fill the entire mold space. Finally, the molten metal cools and solidifies in the pouring cavity 3 to form a corrosion-resistant pump cover that is completely consistent with the shape of the mold.

[0034] Embodiment 2: Based on the above embodiment, it is further optimized to refer to Figure 3-Figure 5 and Figure 8A matching baffle 44 is provided at the pouring port 43, a rotating groove 49 is provided on the side wall of the pouring port 43, a connecting shaft 410 is rotatably provided between the inner walls of the rotating groove 49, the baffle 44 is fixed on the connecting shaft 410, and an adjusting mechanism 5 is provided at one end of the connecting shaft 410 extending outside the pouring portion 4, the adjusting mechanism 5 includes a mounting plate 51 fixed on the upper mold 1, a driving part 52 is installed on the mounting plate 51, and the output end of the driving part 52 is connected to one end extending from the connecting shaft 410, when the baffle 44 rotates and is located at the pouring port 43 When in a horizontal state, the pouring port 43 can be sealed and blocked. When the baffle 44 rotates and is located in a vertical state in the first drainage chamber 41, a pair of sealing plates 45 that fit together with the baffle 44 are fixed to the inner wall of the first drainage chamber 41, and a spacer block 46 that cooperates with the baffle 44 is fixed to the inner wall of the second drainage chamber 42. A drainage port 47 with a gap is formed between the top of the spacer block 46 and the bottom surface corresponding to the baffle 44 in the vertical state. An arc block 48 is provided on the spacer block 46 on the left side near the drainage port 47, and the arc block 48 is bent upward.

[0035] In the above technical solution, before the metal solution is poured, the baffle 44 is in a horizontal state. This design can seal and shield the pouring port 43 before pouring to prevent the metal solution from splashing or flowing in early. When the metal solution needs to be poured, the drive unit 52 using the servo motor is started to drive the connecting shaft 410 to rotate ninety degrees clockwise. The rotation of the connecting shaft 410 causes the baffle 44 to rotate from a horizontal state to a vertical state and overlap between the two sealing plates 45. In the vertical state, a drainage port 47 with a gap is formed between the baffle 44 and the top of the spacer 46. The drainage port 47 allows the metal solution to flow from the first drainage cavity 41 into the second drainage cavity 42. When the metal solution enters the first drainage cavity 41 from the pouring port 43, the baffle 44 is opened. When the pouring is completed, the connecting shaft 410 is driven by the driving part 52 to rotate counterclockwise by ninety degrees, and the baffle 44 can be turned back to the horizontal state from the vertical state, and the pouring port 43 is re-sealed to block the pouring port 43. In this way, the residual solution or slag in the pouring part 4 is effectively isolated and will not come into direct contact with the outside air, thereby greatly reducing the risk of oxidation. This design not only improves the quality of the casting, but also extends the service life of the mold.

[0036] Embodiment 3: Based on the above embodiment, refer to Figure 6When the connecting shaft 410 rotates, a movable cavity 411 is provided on the top of the spacer 46, a slag guide plate 412 is slidably provided on the inner wall of the movable cavity 411, a spring 413 is fixed between the bottom of the slag guide plate 412 and the bottom wall of the movable cavity 411, a slag discharge port 414 connected to the movable cavity 411 is provided on the outer surface of the pouring part 4, a guide surface 416 inclined downward is provided on the top of the slag guide plate 412, and the direction and position of the guide surface 416 and the slag discharge port 414 correspond, an arc-shaped shielding edge 415 that fits the inner wall of the movable cavity 411 is fixed on the bottom of the slag guide plate 412, and a spring 413 is fixed between the bottom of the spacer 46 and the surface of the connecting shaft 410. The air guide mechanism 6 is used to drive the slag guide plate 412 to move in the movable chamber 411. When the baffle plate 44 rotates through the connecting shaft 410 and overlaps with the two sealing plates 45, the air guide mechanism 6 which is simultaneously linked with the connecting shaft 410 will drive the slag guide plate 412 to move to a position close to the top of the movable chamber 411, and the arc-shaped shielding edge 415 located at the bottom of the slag guide plate 412 seals the slag discharge port 414. When the baffle plate 44 rotates through the connecting shaft 410 and overlaps with the pouring port 43, the air guide mechanism 6 which is simultaneously linked with the connecting shaft 410 will drive the slag guide plate 412 to move to a bottom port position of the movable chamber 411 close to the slag discharge port 414.

[0037] In the above technical solution, in order to facilitate the cleaning of the inclusions intercepted on the top of the partition block 46, a movable cavity 411 is designed on the top of the partition block 46, and the slag guide plate 412 is slid along the inner wall of the movable cavity 411. With the help of the baffle plate 44, in the process of switching between the vertical and horizontal states, the air guide mechanism 6 can be linked to adjust the broken slag blocked on the slag guide plate 412 to be discharged through the slag discharge port 414. When in use, since the slag guide plate 412 changes with the horizontal and vertical states of the baffle plate 44, when the baffle plate 44 is in the vertical state, the slag guide plate 412 2 is parallel to the top of the spacer block 46, and does not hinder the smooth flow of the molten metal. When the baffle plate 44 is switched to the horizontal state, the slag guide plate 412 moves to the bottom of the slag discharge port 414, and the slag is discharged by the guide surface 416 without manual intervention. The coordination of the baffle plate 44 and the air guide mechanism 6 can ensure that the slag is cleaned immediately after the molten metal is poured, without waiting for the pouring part 4 to cool down and then manually clean it, thereby improving the production efficiency. This not only avoids the safety accidents that may occur during manual cleaning, but also reduces the contact time between the slag and the air, thereby reducing the risk of oxidation.

[0038] Embodiment 4: Based on the above embodiment, refer to Figure 1-Figure 3 and Figure 7-Figure 9The air guide mechanism 6 includes a circular shell 61 which is sleeved on the connecting shaft 410 and fixed to the mounting plate 51. A plurality of blades 62 which are distributed in a circle and fit with the inner wall of the circular shell 61 are fixed on the connecting shaft 410. A No. 1 air guide pipe 63 is connected between the lower surface of the circular shell 61 and the bottom of the partition block 46. A No. 2 air guide pipe 64 is connected to the upper surface of the circular shell 61. The other end of the No. 2 air guide pipe 64 is connected to an arc-shaped spray pipe 65 which is located above the casting part 4.

[0039] In the above technical solution, when the baffle plate 44 is rotated from a horizontal state to a vertical state through the connecting shaft 410, the blade 62 on the connecting shaft 410 will slide along the inner wall of the circular shell 61, and the gas will be sucked from the No. 2 air guide pipe 64 and enter the movable chamber 411 through the No. 1 air guide pipe 63, so as to push the slag guide plate 412 to move to a position parallel to the top of the partition block 46. When the baffle plate 44 is rotated from a vertical state to a horizontal state through the connecting shaft 410 to seal the pouring port 43, at this time, the blade 62 on the connecting shaft 410 will rotate along the inner wall of the circular shell 61 again, and the No. 1 air guide pipe 63 will pass the gas sucked in the movable chamber 411 through the No. 2 air guide pipe 63. The gas is discharged through the No. 2 air guide pipe 64, so that when there is no gas pressure in the movable chamber 411, the slag guide plate 412 can be reset by the elastic force of the spring 413, driving the slag guide plate 412 to move down along the inner wall of the movable chamber 411 to a position close to the bottom of the slag discharge port 414, so that the slag intercepted on the slag guide plate 412 can be smoothly discharged from the slag discharge port 414 under the guidance of the inclined guide surface 416. It is worth mentioning that the spray pipe 65 connected to the No. 2 air guide pipe 64 can blow the discharged gas to the surface of the pouring part 4, thereby accelerating the cooling time of the pouring part 4 and avoiding the problem of burns caused by the upper mold 1 touching the pouring part 4 when it is opened.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application 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 replace some or all of the technical features therein with equivalents, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A casting mold for producing a corrosion-resistant pump cover, comprising an upper mold (1) and a lower mold (2), characterized in that: When the upper mold (1) and the lower mold (2) overlap, a pouring cavity (3) is formed, and the upper mold (1) is connected to a pouring portion (4) that is in communication with the pouring cavity (3); The pouring portion (4) is provided with a first drainage cavity (41) and a second drainage cavity (42) in sequence from top to bottom, the first drainage cavity (41) and the second drainage cavity (42) are communicated with each other, the second drainage cavity (42) and the pouring cavity (3) are communicated with each other, a pouring port (43) communicated with the first drainage cavity (41) is provided at the top of the pouring portion (4), and a matching baffle (44) is provided at the pouring port (43); When the baffle (44) is rotated and located at the pouring port (43) in a horizontal state, the pouring port (43) can be sealed and shielded; When the baffle (44) is rotated and positioned in the first drainage chamber (41) in a vertical state, a pair of sealing plates (45) that are in contact with the baffle (44) are fixed to the inner wall of the first drainage chamber (41), and a spacer (46) that matches the baffle (44) is fixed to the inner wall of the second drainage chamber (42), and a drainage port (47) with a gap is formed between the top of the spacer (46) and the bottom surface of the baffle (44) corresponding to the vertical state; A rotating groove (49) is provided on the side wall of the pouring port (43); a connecting shaft (410) is rotatably provided between the inner walls of the rotating groove (49); the baffle (44) is fixed on the connecting shaft (410); and an adjusting mechanism (5) is provided at one end of the connecting shaft (410) extending outside the pouring portion (4); When the connecting shaft (410) rotates, a movable cavity (411) is provided on the top of the spacer (46), a slag guide plate (412) is slidably provided on the inner wall of the movable cavity (411), a spring (413) is fixed between the bottom of the slag guide plate (412) and the bottom wall of the movable cavity (411), a slag discharge port (414) connected to the movable cavity (411) is provided on the outer surface of the casting portion (4), an arc-shaped shielding edge (415) that fits the inner wall of the movable cavity (411) is fixed to the bottom of the slag guide plate (412), and an air guide mechanism (6) is provided between the bottom of the spacer (46) and the surface of the connecting shaft (410) for driving the slag guide plate (412) to move in the movable cavity (411); The air guide mechanism (6) comprises a circular shell (61) sleeved on the connecting shaft (410) and fixed to the mounting plate (51); a plurality of blades (62) distributed in a circumference and in contact with the inner wall of the circular shell (61) are fixed to the connecting shaft (410); a first air guide pipe (63) is connected between the lower surface of the circular shell (61) and the bottom of the spacer (46); a second air guide pipe (64) is connected to the upper surface of the circular shell (61); and the other end of the second air guide pipe (64) is connected to an arc-shaped spray pipe (65) located above the casting portion (4).

2. A casting mold for producing a corrosion-resistant pump cover according to claim 1, characterized in that: The internal channel end diameter of the first drainage cavity (41) gradually decreases from top to bottom, and the internal channel end diameter of the second drainage cavity (42) is consistent with the lower end diameter of the first drainage cavity (41).

3. A casting mold for producing a corrosion-resistant pump cover according to claim 1, characterized in that: An arc-shaped block (48) is provided on the left side of the spacer block (46) close to the drainage port (47), and the arc-shaped block (48) is bent upwards.

4. A casting mold for producing a corrosion-resistant pump cover according to claim 1, characterized in that: The adjustment mechanism (5) comprises a mounting plate (51) fixed on the upper mold (1), a driving unit (52) being mounted on the mounting plate (51), and an output end of the driving unit (52) being connected to an extended end of the connecting shaft (410).

5. The casting mold for producing a corrosion-resistant pump cover according to claim 1, characterized in that: A guide surface (416) inclined downward is provided on the top of the slag guide plate (412), and the guide surface (416) corresponds to the direction of the slag discharge port (414).

6. A casting mold for producing a corrosion-resistant pump cover according to claim 1, characterized in that: When the baffle plate (44) rotates via the connecting shaft (410) and overlaps with the two sealing plates (45), the air guide mechanism (6) that is simultaneously linked to the connecting shaft (410) drives the slag guide plate (412) to move to a position close to the top of the movable chamber (411), and the arc-shaped shielding edge (415) located at the bottom of the slag guide plate (412) seals the slag discharge port (414).

7. A casting mold for producing a corrosion-resistant pump cover according to claim 1, characterized in that: When the baffle plate (44) rotates via the connecting shaft (410) and overlaps with the pouring port (43), the air guide mechanism (6) simultaneously linked to the connecting shaft (410) drives the slag guide plate (412) to move to a bottom port position of the movable cavity (411) close to the slag discharge port (414).

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