Copper bush pouring device for plunger pump

Abstract

The utility model relates to a copper bush pouring device for a plunger pump. The device comprises a mold body, isolation rods and a bottom plate, a pouring groove is formed in the top of the mold body. A pouring hole in the bottom face of the pouring groove communicates with the pouring channel. A plurality of pouring cavities are evenly distributed in the mold body, and the vertex angles of the pouring cavities communicate with the pouring channels. A cylindrical protrusion is arranged in the center of the pouring groove. The isolation rod is arranged in the pouring cavity, and a pouring space is formed between the outer surface of the upper portion of the isolation rod and the inner wall of the pouring cavity. A bottom plate is fixed to the bottom of the die body and provided with containing grooves, the bottoms of the isolation rods are arranged in the corresponding containing grooves, and the isolation rods and the bottom plate are connected and fixed through bolts. The mold has the advantages that the mold body is provided with the plurality of pouring holes and the plurality of pouring cavities, so that a plurality of copper bushes can be poured at the same time, and the machining efficiency is improved; during demolding after pouring is completed, the isolation rods can be taken out at the same time only by dismantling the bottom plate, and demolding is convenient; and the same pouring mold can be used for machining copper bushes of various specifications, so that the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of processing plunger pump bushings, and particularly relates to a copper sleeve casting device for a plunger pump. Background Art

[0002] At present, for the compound problem of the plunger holes (cylindrical holes) of the cylinder block of a hydraulic plunger pump, the method of inlaying copper sleeves is usually adopted. The method of inlaying copper sleeves is to make the copper sleeve fit in the hole of the steel matrix with interference by mechanical force. When casting the copper sleeve for the existing cylinder block of the plunger pump, the molten copper liquid is poured into the mold for cooling and forming, but only one copper sleeve can be processed at a time, and the processing efficiency is low; in addition, it is also inconvenient to demold after processing, and the same casting mold can only process copper sleeves of one specification. For the processing of copper sleeves with different wall thicknesses and lengths, different molds need to be replaced, and the processing cost is relatively high. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a copper sleeve casting device for a plunger pump, which can solve the problems that only one copper sleeve can be processed at a time during the casting of the copper sleeve for the cylinder block of the plunger pump in the prior art, the processing efficiency is low, it is inconvenient to demold after processing, and different molds need to be replaced for the processing of copper sleeves of different specifications, resulting in relatively high processing costs.

[0004] To solve the above technical problems, the technical solution of the utility model is: including a mold body, a separation rod and a bottom plate;

[0005] A casting groove is arranged at the top of the mold body. The bottom surface of the casting groove is a downwardly concave curved surface. Several casting holes are evenly distributed on the bottom surface of the casting groove. The casting holes are communicated with a casting channel, and the casting channel is inclined;

[0006] Several casting cavities are evenly distributed inside the mold body. The casting cavities are arranged vertically. The top corners of several casting cavities are respectively arranged corresponding to several casting channels, and a communication is arranged between the top corner of the corresponding casting cavity and the casting channel;

[0007] A cylindrical protrusion is arranged at the center position of the casting groove;

[0008] Several separation rods are provided. The several separation rods are respectively arranged in several casting cavities. The outer diameter of the lower part of the separation rod is the same as the inner diameter of the casting cavity. The outer diameter of the upper part of the separation rod is smaller than the inner diameter of the casting cavity. A casting space is formed between the outer surface of the upper part of the separation rod and the inner wall of the casting cavity. The bottom of the separation rod extends out of the outside of the casting cavity;

[0009] The bottom of the mold body is fixed with a bottom plate by screws. Several placing grooves are provided on the bottom plate. The several placing grooves are respectively arranged corresponding to several isolation rods. The bottom of the isolation rod is arranged in the corresponding placing groove, and a connection hole is provided at the bottom of the isolation rod. A locking hole is provided at the bottom of the bottom plate. The locking hole is communicated with the placing groove. The isolation rod and the bottom plate are connected and fixed by screwing a bolt through the locking hole and the connection hole.

[0010] Further, the bottom end where the pouring channel communicates with the pouring cavity is inclined outward.

[0011] Further, the top of the cylindrical protrusion is flush with the top of the mold body.

[0012] Further, the several pouring holes are distributed in a ring, and the several pouring cavities are distributed in a ring.

[0013] Further, the locking hole is a stepped hole.

[0014] After adopting the above structure, the advantages of the present utility model are as follows: several pouring holes and pouring cavities are provided on the mold body, and several copper sleeves can be poured and processed simultaneously, improving the processing efficiency;

[0015] Since the bottom plate and the mold body are connected by screws, and the isolation rod and the bottom plate are fixedly connected, when demolding after pouring is completed, only the bottom plate needs to be removed, and the isolation rod can be taken out simultaneously, making demolding convenient;

[0016] When processing copper sleeves with different wall thicknesses and lengths, only different specifications of isolation rods need to be replaced. The same pouring mold can be used to process copper sleeves of various specifications, reducing the processing cost. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a cross-sectional view of the present utility model. Detailed Embodiment

[0019] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the drawings and specific embodiments. The following embodiments can enable those skilled in the art to understand the present utility model more comprehensively, but do not limit the present utility model within the scope of the described embodiments.

[0020] As Figure 1 and Figure 2 shown, the following technical solution is adopted in this specific embodiment: It includes a mold body 1, an isolation rod 2 and a bottom plate 3. The bottom of the mold body 1 is fixed with a bottom plate 3 by screws, and the isolation rod 2 and the bottom plate 3 are connected by a bolt 4.

[0021] At the top of the mold body 1, there is a pouring groove 5. The bottom surface of the pouring groove 5 is a downwardly concave curved surface. Several pouring holes 7 are evenly distributed on the bottom surface of the pouring groove 5. The several pouring holes 7 are arranged in a circular pattern. The pouring holes 7 are communicated with a pouring channel 6.

[0022] Inside the mold body 1, several pouring cavities 8 are evenly distributed. The several pouring cavities 8 are arranged in a circular pattern. The pouring cavities 8 are arranged vertically. The apex angles of the several pouring cavities 8 are respectively arranged corresponding to the several pouring channels 6. And between the apex angle of the corresponding pouring cavity 8 and the pouring channel 6, they are communicated. The pouring channel 6 is inclined, and the bottom end of the pouring channel 6 communicated with the pouring cavity 8 is inclined towards the outside. When the molten copper liquid is poured, it enters the pouring channel 6 from the pouring holes 7 and then enters the pouring cavity 8.

[0023] At the central position of the pouring groove 5, there is a cylindrical protrusion 9. The top of the cylindrical protrusion 9 is flush with the top of the mold body 1, preventing the copper liquid from flowing to the sunken part at the bottommost surface of the pouring groove 5.

[0024] There are several isolation rods 2. The several isolation rods 2 are respectively arranged in the several pouring cavities 8. The outer diameter of the lower part of the isolation rod 2 is the same as the inner diameter of the pouring cavity 8. The outer diameter of the upper part of the isolation rod 2 is smaller than the inner diameter of the pouring cavity 8. A pouring space is formed between the outer surface of the upper part of the isolation rod 2 and the inner wall of the pouring cavity 8. The bottom of the isolation rod 1 extends out of the outside of the pouring cavity 8.

[0025] On the bottom plate 3, there are several placement grooves. The several placement grooves are respectively arranged corresponding to the several isolation rods 2. The bottom of the isolation rod 2 is arranged in the corresponding placement groove. And the bottom of the isolation rod 2 is provided with a connection hole. The bottom of the bottom plate 3 is provided with a locking hole. The locking hole is a stepped hole. The locking hole is communicated with the placement groove. By screwing a bolt 4 through the locking hole and threadedly connecting it with the connection hole, the isolation rod 2 and the bottom plate 3 are connected and fixed. In this embodiment, there are 9 isolation rods 2, bolts 4, pouring channels 6, pouring holes 7, and pouring cavities 8 respectively.

[0026] Working principle: Several pouring holes ⑦ and a pouring cavity ⑧ are provided on the mold body 1. The molten copper liquid is injected through the pouring holes ⑦ and enters the pouring cavity ⑧ through the pouring channel ⑥. The copper liquid enters the pouring space formed between the inner wall of the pouring cavity ⑧ and the upper outer surface of the isolation rod 2, and then cools and solidifies to form a copper sleeve. Pouring can be carried out simultaneously through several pouring holes ⑦, and several copper sleeves can be processed at the same time, improving the processing efficiency. When processing copper sleeves with different wall thicknesses and lengths, only the isolation rod 2 of different specifications needs to be replaced. By using isolation rods 2 of different specifications, the shape of the pouring space formed between the inner wall of the pouring cavity ⑧ and the upper outer surface of the isolation rod 2 is different, and copper sleeves of different specifications can be poured and cooled to form. The same pouring mold can process copper sleeves of various specifications, reducing the processing cost. Since the bottom plate 3 is connected to the mold body 1 by screws and the isolation rod 2 is fixedly connected to the bottom plate 3, when demolding after pouring, the bottom plate 3 and the mold body 1 are removed, and the isolation rod 2 can be taken out together with the bottom plate 3, making demolding convenient.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper sleeve casting device for a plunger pump, characterized in that: It includes a mold body, isolation rods and a bottom plate; A pouring groove is provided at the top of the mold body. The bottom surface of the pouring groove is a downwardly concave curved surface. Several pouring holes are evenly distributed on the bottom surface of the pouring groove. The pouring holes are communicated with a pouring channel, and the pouring channel is inclined; Several pouring cavities are evenly distributed inside the mold body. The pouring cavities are vertically arranged. The top corners of several pouring cavities are respectively arranged corresponding to several pouring channels, and a communication is provided between the corresponding top corners of the pouring cavities and the pouring channels; A cylindrical protrusion is provided at the center position of the pouring groove; Several isolation rods are provided. The several isolation rods are respectively arranged in several pouring cavities. The outer diameter of the lower part of the isolation rod is the same as the inner diameter of the pouring cavity. The outer diameter of the upper part of the isolation rod is smaller than the inner diameter of the pouring cavity. A pouring space is formed between the outer surface of the upper part of the isolation rod and the inner wall of the pouring cavity. The bottom of the isolation rod extends out of the pouring cavity; The bottom of the mold body is fixed with a bottom plate by screws. Several placing grooves are provided on the bottom plate. The several placing grooves are respectively arranged corresponding to several isolation rods. The bottom of the isolation rod is arranged in the corresponding placing groove. A connection hole is provided at the bottom of the isolation rod, and a locking hole is provided at the bottom of the bottom plate. The locking hole is communicated with the placing groove. The isolation rod and the bottom plate are connected and fixed by screwing a bolt through the locking hole and the connection hole; 2. The copper sleeve casting device for a plunger pump according to claim 1, wherein: The bottom end of the pouring channel communicated with the pouring cavity is inclined towards the outside; 3. A copper sleeve casting device for a plunger pump according to claim 1, characterized in that: The top of the cylindrical protrusion is flush with the top of the mold body; 4. A copper sleeve casting device for a plunger pump according to claim 1, characterized in that: The several pouring holes are distributed in a ring shape, and the several pouring cavities are distributed in a ring shape; 5. A copper sleeve casting device for a plunger pump according to claim 1, characterized in that: The locking hole is a stepped hole.

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