Pouring system of complex thin-wall self-priming pump body casting

Abstract

The utility model relates to the field of pump body casting, in particular to a pouring system of a complex thin-wall self-priming pump body casting, which comprises a casting mold, a cavity is arranged in the casting mold, a plurality of top pouring ports are arranged on the top surface of the casting mold, and side pouring ports are arranged on the lower portion of the side surface of the casting mold. The top sprue gate and the side sprue gate are both communicated with the cavity, the sprue cup is communicated with the cross gate, the sprue is communicated with the cross gate, an auxiliary runner is arranged on the cross gate, a plurality of top ingates are arranged on the auxiliary runner, the positions of the top ingates correspond to the positions of the top sprue gates, and the top ingates are communicated with the side sprue gate. And a side inner pouring gate is arranged on the straight pouring gate, and the position of the side inner pouring gate corresponds to the position of the side pouring gate. According to the utility model, the auxiliary ingates and the plurality of top ingates are arranged, so that molten metal is uniformly paved at all positions in the cavity, and the conditions of insufficient casting, shrinkage porosity and the like at the thin-wall position are reduced.

Description

Technical Field

[0001] This utility model relates to the field of pump body casting, and in particular to a gating system for a complex thin-walled self-priming pump body casting. Background Technology

[0002] Self-priming pumps are mainly used in environmental water treatment, chemical and pharmaceutical, food processing, and petrochemical industries. They are particularly suitable for conveying corrosive media, highly clean liquids, or fluids containing particles, such as reagent circulation in wastewater treatment systems, chemical raw material transmission pipelines, and fluid control in food-grade hygienic processes. Their performance requires a balance of high strength and corrosion resistance, typically using 316 stainless steel to meet demanding operating conditions. High sealing performance is also required to ensure a mechanical seal life exceeding 5000 hours, and optimized design controls the net positive suction head (NPSH) within the range of 2 to 3 meters to ensure operational stability.

[0003] Currently, the casting process of pump bodies involves numerous thin-walled structures, with minimum thicknesses as low as 3 mm. This significantly increases the likelihood of shrinkage porosity, undercasting, and blowholes when using existing gating systems. Therefore, it is necessary to improve this structure to overcome these defects. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a casting system for complex thin-walled self-priming pump body castings. This invention is achieved through the following technical solution:

[0005] A gating system for a complex thin-walled self-priming pump body casting includes a casting mold with a cavity. The top surface of the casting mold has several top gating gates, and the lower side of the casting mold has side gating gates. Both the top gating gates and side gating gates communicate with the cavity. The system also includes at least one gating assembly, comprising a pouring cup, a horizontal runner, and a sprue. The pouring cup communicates with the horizontal runner, and the sprue communicates with the horizontal runner. An auxiliary gating system is provided on the horizontal runner, and several top ingates are provided on the auxiliary gating system. The positions of the top ingates correspond to the positions of the top gating gates. Side ingates are provided on the sprue, and the positions of the side ingates correspond to the positions of the side gating gates.

[0006] In the above technical solution: the casting mold is used for pouring to ensure the correct shape of the poured product; the cavity is used to contain the molten metal; the top gating gate and side gating gates are used for the inflow of molten metal; the gating system is used to provide channels for the flow of molten metal; the pouring cup is the location for temporarily storing molten metal; the runner provides a connecting channel for the flow of molten metal to the sprue and auxiliary runners; the auxiliary runner is used to ensure that the molten metal flows out evenly from each top ingate; the top ingate is used to allow the molten metal to enter from the top gating gate of the casting mold, and due to the setting of multiple top ingates, the molten metal is evenly distributed, reducing the occurrence of isolated liquid phase areas; the side ingate is used to allow the molten metal to flow into the cavity from the sprue, so as to fill the lower part of the cavity, accelerate the filling speed, and reduce the generation of cavities.

[0007] A further feature of this invention is that the auxiliary gating channel is shaped like a "C" or an "O".

[0008] In the above technical solution, the auxiliary gating system is shaped like a "C" or an "O" to correspond to the arrangement of the top gating gate.

[0009] A further feature of this invention is that the gating system kit also includes an auxiliary inclined gating system, one end of which is connected to the pouring cup and the other end of which is connected to the horizontal gating system.

[0010] In the above technical solution: the auxiliary inclined runner is used to increase the flow rate of molten metal between the pouring cup and the runner, and to accelerate the flow of molten metal into the runner.

[0011] A further feature of this invention is that the auxiliary inclined gating system is arc-shaped.

[0012] A further feature of this invention is that the horizontal sprue includes a first part and a second part, the first part is perpendicular to the second part, the lower end of the second part is connected to the auxiliary sprue, one end of the first part is connected to the straight sprue, and the other end is connected to the side of the second part.

[0013] In the above technical solution: the second part is used to fully connect with the auxiliary gating system to adapt to the shape of the auxiliary gating system.

[0014] A further feature of this invention is that the internal shape of the top inlet sprue is conical.

[0015] In the above technical solution, the internal shape of the top ingate is conical, which is used to improve the continuity of molten metal flow.

[0016] A further feature of this invention is that the internal shape of the side inlet is conical.

[0017] In the above technical solution, the internal shape of the side ingate is conical, which is used to improve the continuity of molten metal flow.

[0018] This utility model discloses a casting system for a complex thin-walled self-priming pump body casting, which, compared with the prior art:

[0019] 1. This utility model adopts the setting of auxiliary ingate and several top ingates, so that the molten metal can first flow in the auxiliary ingate and then enter the cavity evenly through the top ingate, thereby making the molten metal evenly distributed in all parts of the cavity, reducing under-casting and shrinkage porosity in thin-walled areas.

[0020] 2. This utility model also enables top and bottom pouring to be carried out simultaneously by setting a side inlet, thereby reducing isolated liquid phase areas in the mold cavity, reducing porosity and cavities in the finished casting, and improving the quality of the casting. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is a schematic diagram of the casting mold of this utility model.

[0023] The numbers and letters in the diagram represent the following component names: 10-Casting mold; 101-Top sprue; 102-Side sprue; 20-Gating system kit; 201-Pour cup; 202-Horizontal sprue; 202a-Part 1; 202b-Part 2; 203-Sprue; 204-Auxiliary sprue; 205-Top ingate; 206-Side ingate; 207-Auxiliary sloping sprue. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0025] like Figure 1 and 2As shown, the present invention proposes a gating system for a complex thin-walled self-priming pump body casting, including a casting mold 10, which has a cavity. The top surface of the casting mold 10 has several top gating ports 101, and the lower side surface of the casting mold 10 has side gating ports 102. Both the top gating ports 101 and the side gating ports 102 communicate with the cavity. The system also includes at least one gating system 20, which includes a pouring cup 201, a horizontal runner 202, and a vertical gating system. The casting mold 10 has a gating system 203. The gating cup 201 is connected to the horizontal gating system 202, and the sprue 203 is also connected to the horizontal gating system 202. An auxiliary gating system 204 is provided on the horizontal gating system 202, and several top ingates 205 are provided on the auxiliary gating system 204. The positions of the top ingates 205 correspond to the positions of the top gating gates 101. Side ingates 206 are provided on the sprue 203, and the positions of the side ingates 206 correspond to the positions of the side gating gates 102. The number of side gating gates 102 is at least two, and the two side gating gates 102 are symmetrically arranged on both sides of the casting mold 10. The top gating gates 101 can be grouped according to the wall thickness of the cavity to ensure that the thickest wall areas are filled first. The number of gating system components 20 is determined by the number of groups of top gating gates 101.

[0026] like Figure 1 and 2 As shown, this utility model proposes a gating system for a complex thin-walled self-priming pump body casting, wherein the auxiliary gating channel 204 is C-shaped or O-shaped. The top inner gating channel 205 is evenly distributed on the auxiliary gating channel 204.

[0027] like Figure 1 and 2 As shown, the present invention proposes a casting system for a complex thin-walled self-priming pump body casting. The gating assembly 20 further includes an auxiliary inclined gating 207, one end of which is connected to the pouring cup 201 and the other end of which is connected to the horizontal gating 202.

[0028] like Figure 1 and 2 As shown, this utility model proposes a gating system for a complex thin-walled self-priming pump body casting, wherein the auxiliary inclined gating 207 is arc-shaped. Specifically, the auxiliary inclined gating 207 is a 1 / 4 arc.

[0029] like Figure 1 and 2As shown, this utility model proposes a gating system for a complex thin-walled self-priming pump body casting. The horizontal sprue 202 includes a first part 202a and a second part 202b. The first part 202a is perpendicular to the second part 202b. The lower end of the second part 202b is connected to the auxiliary sprue 204. One end of the first part 202a is connected to the sprue 203, and the other end is connected to the side of the second part 202b. The thickness of the second part 202b is greater than the thickness of the first part 202a.

[0030] like Figure 1 and 2 As shown, the present invention proposes a casting system for a complex thin-walled self-priming pump body casting, wherein the internal shape of the top inner gating 205 is conical.

[0031] like Figure 1 and 2 As shown, the present invention proposes a casting system for a complex thin-walled self-priming pump body casting, wherein the internal shape of the side inlet 206 is conical.

[0032] The working principle of this utility model is as follows:

[0033] a) Pour the molten metal into the pouring cup;

[0034] b) The molten metal flows from the pouring cup through the auxiliary gating system and the connecting position into the first part of the horizontal runner;

[0035] c) The molten metal flows from the first part of the horizontal runner to the second part and spreads evenly into the auxiliary runner;

[0036] d) The molten metal enters the mold cavity from the auxiliary runner through the top ingate;

[0037] e) At the same time, the molten metal in the first part reaches the side ingate through the sprue;

[0038] f) The molten metal reaches the bottom of the chamber through the side inlet gating system, thus completing the molding process;

[0039] g) Simultaneous top and bottom pouring accelerates the filling speed and reduces the existence of isolated liquid phase zones. At the same time, simultaneous pouring through multiple top inlets reduces the possibility of under-casting at thin-walled areas.

[0040] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A casting system for a complex thin-walled self-priming pump body casting, characterized in that: The system includes a casting mold (10) with a cavity inside. Several top gating gates (101) are provided on the top surface of the casting mold (10), and side gating gates (102) are provided on the lower side of the casting mold (10). Both the top gating gates (101) and the side gating gates (102) are connected to the cavity. The system also includes at least one gating assembly (20), which includes a gating cup (201), a runner (202), and a sprue (203). The gating cup (201) and... The horizontal gating system (202) is connected, and the vertical gating system (203) is connected to the horizontal gating system (202). An auxiliary gating system (204) is provided on the horizontal gating system (202), and a plurality of top ingates (205) are provided on the auxiliary gating system (204). The position of the top ingates (205) corresponds to the position of the top pouring gate (101). A side ingate (206) is provided on the vertical gating system (203), and the position of the side ingates (206) corresponds to the position of the side pouring gate (102).

2. The casting system for a complex thin-walled self-priming pump body casting according to claim 1, characterized in that: The auxiliary gating system (204) is in the shape of a "C" or an "O".

3. The gating system for a complex thin-walled self-priming pump body casting according to claim 1, characterized in that: The gating assembly (20) also includes an auxiliary sprue (207), one end of which is connected to the pouring cup (201) and the other end of which is connected to the runner (202).

4. The gating system for a complex thin-walled self-priming pump body casting according to claim 3, characterized in that: The auxiliary inclined gating (207) is arc-shaped.

5. The casting system for a complex thin-walled self-priming pump body casting according to claim 1, characterized in that: The horizontal runner (202) includes a first part (202a) and a second part (202b). The first part (202a) is perpendicular to the second part (202b). The lower end of the second part (202b) is connected to the auxiliary runner (204). One end of the first part (202a) is connected to the straight runner (203), and the other end is connected to the side of the second part (202b).

6. The casting system for a complex thin-walled self-priming pump body casting according to claim 1, characterized in that: The internal shape of the top inlet runner (205) is conical.

7. The casting system for a complex thin-walled self-priming pump body casting according to claim 1, characterized in that: The internal shape of the side inlet (206) is conical.

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