A precision casting mold for a valve body of a pump

Abstract

The utility model discloses a precision casting mold for a valve body for a pump, comprising a fixing groove, which is arranged at the upper end of the fixing seat, the fixing groove is arranged corresponding to the bottom of a first mold and a second mold, the first mold and the second mold are both provided with a mold cavity inside, the upper ends of the first mold and the second mold are both provided with a semicircular casting port, and the semicircular casting port is connected to the mold cavity; a jack, which is arranged on the inner wall of the first mold, at least four jacks are provided, a plug is arranged on one side of the second mold, at least four plugs are provided, and the plug is fixedly connected to the second mold, the plug is arranged corresponding to the jack, and the plug is plugged into the first mold, the casting mold performs pre-positioning and splicing of the first mold and the second mold through the plug and the jack, and limits and fixes the spliced ​​casting mold from the upper and lower ends to prevent the casting mold from being easily offset during the casting process, ensure the mold closing effect, and improve the casting accuracy of the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of casting molds, in particular to a precision casting mold for a valve body of a pump. Background Art

[0002] Casting is a process of melting metal and pouring it into a pre-made mold. After condensation and cleaning, the desired workpiece or blank is obtained. Casting is an important and basic process method commonly used in machine manufacturing. The process includes making molds, melting metal, pouring, cleaning, cooling and solidifying, and then taking out the finished casting. The mold of the valve body is composed of a male mold and a female mold. The casting mold refers to the structure of the part made of other easily moldable materials in advance in order to obtain the structural shape of the part, and then the mold is placed in the sand mold, so that a cavity with the same size as the part structure is formed in the sand mold, and then a flowing liquid is poured into the cavity. After the liquid cools and solidifies, it can form a part with the same shape and structure as the mold.

[0003] The Chinese patent publication number is CN219151494U, and the authorization announcement date is June 9, 2023. An improved valve body casting mold includes a fixing device that makes the mold more convenient to use. When the mold needs to be used, the bottom end surface of the upper cover is connected to the head end surface of the bottom block, and the plug block is inserted into the caliper at the same time, and the block is pressed down. At this time, the large spring fixedly connected to the end of the block is compressed, and the column fixedly connected to the end surface of the sliding bar will slide downward from the left inclined surface of the special-shaped block. When the column slides to the bottom of the special-shaped block, the column will slide to the right to the middle concave surface of the special-shaped block. At this time, the caliper will clamp the plug block, and the fixed structure will fix the upper cover and the bottom block of the mold together. When the mold needs to be opened, just press the fixed block down, press the block down, the column will move to the right, and then the large spring will generate rebound force to push the block upward. The plug block can be pulled out by opening the caliper, making the mold more flexible in use.

[0004] The existing casting mold is composed of a male mold and a female mold spliced ​​together. The spliced ​​casting mold lacks sufficient limit, and the spliced ​​casting mold is prone to deviation during the casting process. The mold closing effect is poor, the casting accuracy is reduced, and it cannot meet the use requirements. Utility Model Content

[0005] The purpose of the utility model is to provide a precision casting mold for a valve body for a pump, so as to solve the problem proposed in the above background technology that the existing casting mold is composed of a male mold and a female mold spliced ​​together, the spliced ​​casting mold lacks sufficient limit, the spliced ​​casting mold is prone to deviation during the casting process, the mold closing effect is poor, the casting accuracy is reduced, and it cannot meet the use requirements.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a precision casting mold for a pump valve body, comprising a fixing seat, a first mold and a second mold, and also comprising:

[0007] A fixing groove, which is arranged at the upper end of the fixing seat, and the fixing groove is arranged in a rectangular shape, and the fixing groove is arranged corresponding to the bottom of the first mold and the second mold, the first mold and the second mold are both provided with a mold cavity inside, and the upper ends of the first mold and the second mold are both provided with a semicircular casting port, and the semicircular casting port is connected to the mold cavity;

[0008] A jack is arranged on the inner wall of the first mold, and there are at least four jacks. A plug is arranged on one side of the second mold, and there are at least four plugs. The plug is fixedly connected to the second mold. The plug is arranged corresponding to the jack, and the plug is plugged into the first mold.

[0009] Preferably, the bottoms of the first mold and the second mold are both provided with semicircular grooves, the bottom of the fixed groove is provided with a raised disc, and the raised disc is fixedly connected to the fixed seat, the raised disc and the semicircular groove are arranged correspondingly, and the raised disc is plugged into the first mold and the second mold.

[0010] Preferably, connecting grooves are provided on both sides of the upper end of the first mold, and there are two connecting grooves. The bottoms of the two connecting grooves are provided with threaded holes. Connecting blocks are provided on both sides of the upper end of the second mold, and the connecting block and the second mold are integrated. The connecting block is arranged corresponding to the connecting groove, and a connecting bolt is provided on one side of the connecting block, and the connecting bolt and the connecting block are slidably arranged through the connecting bolt, the connecting bolt is arranged corresponding to the threaded hole, and the connecting bolt is threadedly connected to the first mold.

[0011] Preferably, the first mold and the second mold are both provided with corrugated heat exchange tubes, and the corrugated heat exchange tubes are arranged in a serpentine shape inside the first mold and the second mold, the corrugated heat exchange tubes are connected to the first mold and the second mold as a whole, and one side of the first mold and the second mold is provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are connected to the first mold and the second mold as a whole, and the water inlet pipe and the water outlet pipe are respectively connected to both ends of the corrugated heat exchange tube.

[0012] Preferably, an anti-sticking liner is provided on the inner wall of the mold cavity, and the anti-sticking liner is integrated with the first mold and the second mold.

[0013] Preferably, an installation cavity is provided on the inner wall of the mold cavity, a push plate is provided inside the installation cavity, and the push plate is slidingly connected to the first mold and the second mold, a screw is provided on one side of the first mold and the second mold, and the screw is threadedly connected to the first mold and the second mold, and one end of the screw is rotatably connected to the push plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model device is provided with a fixing seat, a first mold, a second mold, a jack, a plug, a connecting groove, a connecting block and a connecting bolt. The plug on one side of the second mold is aligned with the jack on the first mold and inserted, the second mold is spliced ​​with the first mold as a whole, the lower end of the spliced ​​mold is aligned with the fixing groove and inserted, the first mold and the second mold are connected to the fixing seat, the connecting block is inserted into the connecting groove, the connecting bolt fixes the inserted connecting block, and the upper end of the spliced ​​mold is limited to ensure the overall stability of the spliced ​​mold, prevent the spliced ​​mold from exploding, and improve the casting accuracy;

[0016] 2. The utility model device is provided with a water inlet pipe, a water outlet pipe and a corrugated heat exchange pipe. The water inlet pipe injects cold water into the corrugated heat exchange pipe and then discharges it from the water outlet pipe. The cold water flows in the corrugated heat exchange pipe, absorbs and transfers the heat on the first mold and the second mold, releases it, accelerates the cooling and shaping of the casting, and improves the casting efficiency;

[0017] 3. The utility model device is provided with an anti-sticking liner, a screw, an installation cavity and a push plate. The anti-sticking liner can effectively prevent the casting from adhering to the inner wall of the mold cavity, facilitate the falling off of the casting, and ensure the flatness of the outer surface of the casting. The screw is rotated to drive the push plate to move, and the push plate is ejected from the installation cavity, applying thrust to the casting in the mold cavity, so as to better separate the casting from the first mold and the second mold and improve the casting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a structural diagram of the first mold of the utility model;

[0020] Figure 3 This is a structural diagram of the second mold of the utility model;

[0021] Figure 4 This is a top view of the structure of the fixing seat of the utility model;

[0022] Figure 5 This is a diagram showing the connection relationship between the upper ends of the first mold and the second mold of the utility model;

[0023] Figure 6 This is a cross-sectional view of the connection between the first mold and the second mold of the utility model;

[0024] Figure 7 This is a diagram showing the connection relationship between the push plate and the second mold of the utility model.

[0025] In the figure: 1. fixing seat; 2. first mold; 3. second mold; 4. semicircular casting port; 5. connecting groove; 6. connecting block; 7. water inlet pipe; 8. water outlet pipe; 9. mold cavity; 10. semicircular groove; 11. jack; 12. threaded hole; 13. connecting bolt; 14. plug; 15. fixing groove; 16. raised disc; 17. anti-sticking liner; 18. corrugated heat exchange tube; 19. screw; 20. installation cavity; 21. push plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] See also Figure 1-7 The utility model provides an embodiment: a precision casting mold for a pump valve body, comprising a fixing seat 1, a first mold 2 and a second mold 3, and further comprising:

[0028] A fixing groove 15 is arranged at the upper end of the fixing seat 1, and the fixing groove 15 is arranged in a rectangular shape. The fixing groove 15 is arranged corresponding to the bottom of the first mold 2 and the second mold 3. The first mold 2 and the second mold 3 are both provided with a mold cavity 9 inside. The upper ends of the first mold 2 and the second mold 3 are both provided with a semicircular casting port 4, and the semicircular casting port 4 is connected to the mold cavity 9;

[0029] The jack 11 is arranged on the inner wall of the first mold 2, and there are at least four jacks 11. A plug 14 is arranged on one side of the second mold 3, and there are at least four plugs 14. The plug 14 is fixedly connected to the second mold 3. The plug 14 is arranged corresponding to the jack 11, and the plug 14 is plugged into the first mold 2.

[0030] When in use: the plug 14 on one side of the second mold 3 is aligned with the socket 11 on the first mold 2 and inserted into it, the second mold 3 and the first mold 2 are spliced ​​into one, the lower end of the spliced ​​mold is aligned with the fixing groove 15 and inserted into it, the first mold 2 and the second mold 3 are connected to the fixing seat 1, and the molten casting is added into the mold cavity 9 from the semicircular casting port 4. After the casting is cooled and formed, the valve body can be produced.

[0031] See also Figure 2 , Figure 3 and Figure 4A semicircular groove 10 is provided at the bottom of the first mold 2 and the second mold 3, a raised disc 16 is provided at the bottom of the fixing groove 15, and the raised disc 16 is fixedly connected to the fixing seat 1, the raised disc 16 is arranged corresponding to the semicircular groove 10, and the raised disc 16 is plugged into the first mold 2 and the second mold 3, and the lower end of the spliced ​​mold is limited by aligning the raised disc 16 with the semicircular groove 10 at the bottom of the first mold 2 and the second mold 3.

[0032] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 , connecting grooves 5 are provided on both sides of the upper end of the first mold 2, and there are two connecting grooves 5. The bottoms of the two connecting grooves 5 are provided with threaded holes 12. Connecting blocks 6 are provided on both sides of the upper end of the second mold 3, and the connecting block 6 and the second mold 3 are integrated. The connecting block 6 is corresponding to the connecting groove 5. A connecting bolt 13 is provided on one side of the connecting block 6, and the connecting bolt 13 and the connecting block 6 are slidably arranged. The connecting bolt 13 is corresponding to the threaded hole 12, and the connecting bolt 13 is threadedly connected to the first mold 2. By inserting the connecting block 6 into the connecting groove 5, and then using the connecting bolt 13 to fix the inserted connecting block 6, the upper end of the spliced ​​mold is limited to ensure the stability of the mold splicing.

[0033] See also Figure 1 , Figure 2 , Figure 3 and Figure 6 The first mold 2 and the second mold 3 are both provided with corrugated heat exchange tubes 18, and the corrugated heat exchange tubes 18 are serpentinely arranged inside the first mold 2 and the second mold 3, the corrugated heat exchange tubes 18 are connected to the first mold 2 and the second mold 3 as a whole, and the first mold 2 and the second mold 3 are both provided with a water inlet pipe 7 and a water outlet pipe 8 on one side, and the water inlet pipe 7 and the water outlet pipe 8 are connected to the first mold 2 and the second mold 3 as a whole, and the water inlet pipe 7 and the water outlet pipe 8 are respectively connected to the two ends of the corrugated heat exchange tube 18, and cold water is injected into the corrugated heat exchange tube 18 through the water inlet pipe 7, and then discharged from the water outlet pipe 8. The cold water flows in the corrugated heat exchange tube 18, and the heat absorbed, transferred and released on the first mold 2 and the second mold 3 is accelerated to cool and shape the casting, thereby improving the casting efficiency.

[0034] See also Figure 6 An anti-stick liner 17 is provided on the inner wall of the mold cavity 9, and the anti-stick liner 17 is integrated with the first mold 2 and the second mold 3. The anti-stick liner 17 can effectively prevent the casting from adhering to the inner wall of the mold cavity 9, facilitate the falling off of the casting, ensure the flatness of the outer surface of the casting, and improve the casting effect of the production.

[0035] See also Figure 1 and Figure 7An installation cavity 20 is provided on the inner wall of the mold cavity 9, and a push plate 21 is provided inside the installation cavity 20, and the push plate 21 is slidably connected to the first mold 2 and the second mold 3. A screw 19 is provided on one side of the first mold 2 and the second mold 3, and the screw 19 is threadedly connected to the first mold 2 and the second mold 3. One end of the screw 19 is rotatably connected to the push plate 21. The push plate 21 is moved by rotating the screw 19, and the push plate 21 is ejected from the installation cavity 20, so as to apply thrust to the casting in the mold cavity 9, so as to better separate the casting from the first mold 2 and the second mold 3 and improve the casting efficiency.

[0036] Working principle: the plug 14 on one side of the second mold 3 is aligned with the socket 11 on the first mold 2 and inserted, the second mold 3 is spliced ​​with the first mold 2 as a whole, the lower end of the spliced ​​mold is aligned with the fixing groove 15 and inserted, the first mold 2 and the second mold 3 are connected to the fixing seat 1, the connecting block 6 is inserted into the connecting groove 5, and then the connecting bolt 13 is used to fix the inserted connecting block 6, and the upper end of the spliced ​​mold is limited to ensure the stability of the mold splicing; the molten casting is added from the semicircular casting port 4 to the mold cavity 9, and the water inlet pipe 7 is used to connect the first mold 2 and the second mold 3 to the fixing seat 1. Cold water is injected into the corrugated heat exchange tube 18 and then discharged from the water outlet pipe 8. The cold water flows in the corrugated heat exchange tube 18, and the heat absorbed, transferred and released on the first mold 2 and the second mold 3 is released, so as to accelerate the cooling and shaping of the casting. The anti-stick liner 17 can effectively prevent the casting from adhering to the inner wall of the mold cavity 9. The screw 19 is rotated to drive the push plate 21 to move, and the push plate 21 is pushed out of the installation cavity 20, so as to apply thrust to the casting in the mold cavity 9, so as to better separate the casting from the first mold 2 and the second mold 3. After the casting is cooled and shaped, the valve body can be produced.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0038] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision casting mold for a pump valve body, comprising a fixing seat (1), a first mold (2) and a second mold (3), characterized in that: Also includes: A fixing groove (15) is arranged at the upper end of the fixing seat (1), and the fixing groove (15) is arranged in a rectangular shape. The fixing groove (15) is arranged corresponding to the bottom of the first mold (2) and the second mold (3). The first mold (2) and the second mold (3) are both provided with a mold cavity (9) inside. The upper ends of the first mold (2) and the second mold (3) are both provided with a semicircular casting port (4), and the semicircular casting port (4) is connected to the mold cavity (9); A socket (11) is arranged on the inner wall of the first mold (2), and at least four sockets (11) are arranged. A plug (14) is arranged on one side of the second mold (3), and at least four plugs (14) are arranged. The plug (14) is fixedly connected to the second mold (3). The plug (14) and the socket (11) are arranged correspondingly, and the plug (14) is plugged into the first mold (2).

2. The precision casting mold for a pump valve body according to claim 1, characterized in that: The bottoms of the first mold (2) and the second mold (3) are both provided with semicircular grooves (10), the bottoms of the fixing grooves (15) are provided with raised discs (16), and the raised discs (16) are fixedly connected to the fixing seat (1), the raised discs (16) are arranged corresponding to the semicircular grooves (10), and the raised discs (16) are plugged into the first mold (2) and the second mold (3).

3. The precision casting mold for a pump valve body according to claim 1, characterized in that: Both sides of the upper end of the first mold (2) are provided with connecting grooves (5), and there are two connecting grooves (5). The bottoms of the two connecting grooves (5) are provided with threaded holes (12). Both sides of the upper end of the second mold (3) are provided with connecting blocks (6), and the connecting blocks (6) and the second mold (3) are provided as a whole. The connecting blocks (6) and the connecting grooves (5) are provided correspondingly. A connecting bolt (13) is provided on one side of the connecting block (6), and the connecting bolt (13) and the connecting block (6) are slidably connected. The connecting bolt (13) and the threaded holes (12) are provided correspondingly, and the connecting bolt (13) is threadedly connected to the first mold (2).

4. The precision casting mold for a pump valve body according to claim 1, characterized in that: The first mold (2) and the second mold (3) are both provided with a corrugated heat exchange tube (18), and the corrugated heat exchange tube (18) is arranged in a serpentine shape inside the first mold (2) and the second mold (3), and the corrugated heat exchange tube (18) is connected to the first mold (2) and the second mold (3) as a whole; a water inlet pipe (7) and a water outlet pipe (8) are both provided on one side of the first mold (2) and the second mold (3), and the water inlet pipe (7) and the water outlet pipe (8) are connected to the first mold (2) and the second mold (3) as a whole; and the water inlet pipe (7) and the water outlet pipe (8) are respectively connected to both ends of the corrugated heat exchange tube (18).

5. The precision casting mold for a pump valve body according to claim 1, characterized in that: An anti-sticking liner (17) is arranged on the inner wall of the mold cavity (9), and the anti-sticking liner (17) is arranged as a whole with the first mold (2) and the second mold (3).

6. The precision casting mold for a pump valve body according to claim 1, characterized in that: An installation cavity (20) is provided on the inner wall of the mold cavity (9), a push plate (21) is provided inside the installation cavity (20), and the push plate (21) is slidably connected to the first mold (2) and the second mold (3), a screw rod (19) is provided on one side of the first mold (2) and the second mold (3), and the screw rod (19) is threadedly connected to the first mold (2) and the second mold (3), and one end of the screw rod (19) is rotatably connected to the push plate (21).

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