Check valve bottom pouring system

Abstract

The utility model belongs to the technical field of check valve pouring, and particularly relates to a check valve bottom pouring system which comprises a pouring mold. An open riser, a check valve body cavity, a straight pouring gate, a blind riser, an inner pouring gate and a transverse pouring gate are formed in the pouring mold; the open riser and the sprue are arranged at the top of the pouring mold and are communicated with the outside; the bottom end of the straight pouring gate is communicated with the inner pouring gate; a plurality of groups of cross gates are arranged in the pouring mold; according to the step, a bottom-to-top pouring channel structure is formed by arranging a pouring mold, an open riser, a check valve body cavity, a straight pouring gate, a blind riser, an inner pouring gate and a transverse pouring gate, molten metal enters the mold from bottom to top during pouring, and the situation that molding sand washing or bottom shortening is caused by impact when the molten metal directly enters the mold is solved; the stability of molten metal flowing in the mold cavity is improved, the situation that sand holes or shrinkage porosity is generated in the production of check valve castings is reduced, and the production quality of the castings is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to check valve pouring technical field, specifically a check valve bottom pouring system. BACKGROUND

[0002] Check valve is a kind of check valve that prevents the medium in pipeline from flowing back, and the opening and closing device in check valve is automatically opened and closed by the force of medium, so as to prevent the medium from flowing back.

[0003] In the production process of check valve, the pouring of check valve is an important link in the manufacturing process, the mold needs to be preheated before pouring, then the appropriate molten metal is selected, so that the temperature of the molten metal is kept at the appropriate position, the molten metal is poured into the mold through the pouring pipe during pouring, the temperature, speed and time of pouring need to be monitored during pouring, and then cooling and solidification are carried out after pouring is completed, and finally demolding is carried out.

[0004] In the existing check valve pouring technology, the molten metal is poured through the 45° runner above the mold, which causes the molten metal to enter the mold unstably, and easily causes sand washing and bottom shortening, thereby affecting the quality of check valve production.

[0005] Therefore, the utility model provides a check valve bottom pouring system. UTILITY MODEL CONTENTS

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The utility model solves the technical problems and adopts the technical scheme: a check valve bottom pouring system, including pouring mold, the inside of pouring mold is provided with open riser, check valve body cavity, direct gate, hidden riser, inner gate and cross gate, open riser and direct gate are communicated with the outside at the top of pouring mold, the bottom of direct gate is communicated with inner gate, the inside of pouring mold is provided with multiple groups of cross gates, the end portion of inner gate away from direct gate is communicated with multiple groups of cross gates, the end portion of multiple groups of cross gates away from inner gate is communicated with hidden riser respectively, hidden riser is communicated with check valve body cavity, the outside wall of pouring mold is equipped with protection assembly, the side wall of protection assembly is equipped with quick release assembly, the bottom of protection assembly is equipped with damping assembly, this step is through the setting of pouring mold, open riser, check valve body cavity, direct gate, hidden riser, inner gate and cross gate, and forms the pouring channel structure from bottom to top, realizes that the molten metal enters the mold from bottom to top during pouring, solves the condition that the molten metal directly enters the mold and causes impact to cause sand washing or bottom shortening, improves the stability of molten metal when flowing in the mold cavity, reduces the sand eye or shrinkage condition of check valve casting production, and improves the quality of casting production.

[0008] Preferably, the protection assembly comprises a mold shell, a protective cover and a heat insulation pad; a pair of mold shells are arranged on the outer side wall of the pouring mold, and are arranged symmetrically; the pair of mold shells are fixedly connected through a quick release assembly; the protective cover is fixedly connected to the outer side wall of the mold shell; the heat insulation pad is fixedly connected to the inner side wall bottom of the protective cover; this step forms a protection structure by arranging the mold shell, the protective cover and the heat insulation pad, realizes the function of protection during pouring, solves the situation that the excess metal liquid flows to other equipment or objects, reduces the situation that the overflow of metal liquid causes damage to other objects, and improves the safety of the check valve during pouring.

[0009] Preferably, the damping assembly comprises a damping spring, a pad disc, a damper and a support foot disc; the damping spring is fixedly connected to the bottom of the mold shell; the damping spring is arranged in multiple groups at the bottom of the mold shell, and is arranged symmetrically; the pad disc is fixedly connected to the bottom end of the damping spring away from the mold shell; the damper is hingedly connected to the outer side wall of the mold shell; the damper is arranged in multiple groups on the outer side wall of the mold shell; the support foot disc is hingedly connected to the end of the damper away from the mold shell; this step forms a damping structure by arranging the damping spring, the pad disc, the damper and the support foot disc, realizes the function of weakening the vibration of the device during pouring or the vibration transmitted from the outside, solves the situation that the vibration of the device during pouring causes the metal liquid to shake inside the pouring mold, reduces the situation that the shaking of the metal liquid causes the sand hole or loose of the casting, improves the stability of the metal liquid after pouring into the pouring mold, and improves the quality of the check valve production.

[0010] Preferably, the quick release assembly comprises a fixed clamp, a locking block and a heat insulation rod; the fixed clamp is fixedly connected to the side wall of one group of mold shells; the fixed clamp is arranged in multiple groups on the side wall of one group of mold shells, and is arranged symmetrically; the locking block is rotatably connected to the side wall of the other group of mold shells; the locking block is arranged in multiple groups on the side wall of the other group of mold shells, and is arranged symmetrically; the heat insulation rod is fixedly connected to the end of the locking block away from the mold shell; this step forms a quick release fixing structure by arranging the fixed clamp, the locking block and the heat insulation rod, realizes the function of quickly fixing and splitting the pair of mold shells, solves the problem that the combination and splitting of the mold shell is relatively cumbersome, and improves the convenience of combination and splitting of the device.

[0011] Preferably, the inner side wall of one group of the protective cover is fixedly connected with a fixed plate; the fixed plate is slidingly connected with a funnel near the middle part of the sprue; the funnel is inserted into the sprue; this step improves the convenience of pouring metal liquid by arranging the fixed plate and the funnel, and reduces the situation of metal liquid leakage.

[0012] Preferably, the support foot disc bottom is fixedly connected with anti-skid teeth; the anti-skid teeth are arranged in multiple groups on the support foot disc bottom and are evenly distributed on the support foot disc bottom; through the arrangement of the anti-skid teeth, the friction between the support foot disc and the ground is increased, the slippage of the support foot disc is reduced, and the stability of the device during work is improved.

[0013] Preferably, the protective cover is made of high-temperature-resistant material; the protective cover is made of high-temperature-resistant material, the damage of the protective cover by the molten metal is reduced, the service life of the protective cover is improved, and the safety of the device during work is improved.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The bottom pouring system of the check valve, through the arrangement of the pouring mold, the open riser, the check valve body cavity, the direct sprue, the blind riser, the inner gate and the horizontal gate, a pouring channel structure from bottom to top is formed, the molten metal is poured into the mold from bottom to top during pouring, the condition that the molten metal directly enters the mold to cause impact to lead to sanding or bottom shortening is solved, the stability of the molten metal during flowing in the mold cavity is improved, the conditions that sand holes or loose sand of the check valve castings are produced during production are reduced, and the quality of the castings production is improved.

[0016] 2. The bottom pouring system of the check valve, through the arrangement of the mold shell, the protective cover and the heat insulation pad, a protection structure is formed, the protection function during pouring is realized, the condition that the excess molten metal overflows and flows to other equipment or objects is solved, the condition that other objects are damaged due to the molten metal overflow is reduced, and the safety of the check valve during pouring is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described below in combination with the drawings.

[0018] Figure 1 is the structure schematic view of the pouring channel in the utility model;

[0019] Figure 2 is the perspective view of the utility model;

[0020] Figure 3 is the structure schematic view of the protective cover and the mold shell cooperation in the utility model;

[0021] Figure 4 is the structure schematic view of the damper and the support foot disc cooperation in the utility model.

[0022] In the diagram: 1. Casting mold; 11. Exposed riser; 12. Check valve body cavity; 13. Sprue; 14. Concealed riser; 15. Ingate; 16. Runner; 2. Mold shell; 21. Protective cover; 22. Heat insulation pad; 3. Shock-absorbing spring; 31. Washer plate; 32. Damper; 33. Support foot plate; 4. Fixing clamp; 41. Locking block; 42. Heat insulation rod; 5. Fixing plate; 51. Funnel; 6. Anti-slip teeth. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 3 As shown in the figure, a bottom gating system for a check valve according to an embodiment of the present invention includes a casting mold 1; the casting mold 1 has an open riser 11, a check valve body cavity 12, a sprue 13, a concealed riser 14, an ingate 15, and a runner 16 inside; the open riser 11 and the sprue 13 are located at the top of the casting mold 1 and communicate with the outside; the bottom end of the sprue 13 communicates with the ingate 15; multiple sets of the runners 16 are arranged inside the casting mold 1; the ingate... The end of the sprue 15 furthest from the ingate 13 communicates with multiple sets of horizontal runners 16; the ends of the multiple sets of horizontal runners 16 furthest from the ingate 15 communicate with hidden risers 14; the hidden risers 14 communicate with the interior of the check valve body cavity 12; the outer wall of the casting mold 1 is provided with a protective component; the side wall of the protective component is provided with a quick-release component; the bottom of the protective component is provided with a shock-absorbing component; during operation, when pouring molten metal, the casting mold 1 is placed in a stable area, and the molten metal is poured through the sprue 13. The molten metal is poured into the casting mold 1 and flows into the ingate 15, then through the sprue 16 to the hidden riser 14. Under the action of gravity, the molten metal flows out from the hidden riser 14 and fills the space inside the check valve body cavity 12. Air is squeezed out from bottom to top by the molten metal and discharged through the open riser 11. When the molten metal reaches the inside of the open riser 11, the pouring of molten metal is stopped. After pouring, the casting mold 1 is placed in the cooling area for cooling and solidification. This step, through the setting of the casting mold 1, the open riser 11, the check valve body cavity 12, the sprue 13, the hidden riser 14, the ingate 15, and the sprue 16, forms a bottom-up pouring channel structure, realizing that the molten metal enters the mold from bottom to top during pouring. This solves the problem of the molten metal directly entering the mold and causing impact, resulting in sand blowing or bottom shortening. It improves the stability of the molten metal flowing in the mold cavity, reduces the occurrence of sand holes or shrinkage in the production of check valve castings, and improves the quality of casting production.

[0025] like Figures 2 to 3As shown, the protection assembly includes a mold shell 2, a protective cover 21 and a heat insulation pad 22; the mold shell 2 is provided on the outer wall of the pouring mold 1 in pairs and symmetrically; a pair of the mold shell 2 is fixedly connected through the quick release assembly; the protective cover 21 is fixedly connected to the outer side wall of the mold shell 2; the heat insulation pad 22 is fixedly connected to the inner side wall bottom of the protective cover 21; in work, before pouring, a pair of mold shells 2 are combined together and fixed through the quick release assembly, and the pouring mold 1 is placed inside the mold shell 2; when pouring, the excess metal liquid overflows and flows to the protective cover 21 inside to be collected, and the heat insulation pad 22 plays a heat insulation role to reduce heat transfer to the heat insulation pad 22; this step forms a protection structure through the setting of the mold shell 2, the protective cover 21 and the heat insulation pad 22, realizes the protection function during pouring, solves the situation that the excess metal liquid overflows and flows to other equipment or objects, reduces the situation that the overflow of the metal liquid causes damage to other objects, and improves the safety of the check valve during pouring.

[0026] As shown in Figures 2 to 4 The damping assembly includes a damping spring 3, a pad disc 31, a damper 32 and a support foot disc 33; the damping spring 3 is fixedly connected to the bottom of the mold shell 2; the damping spring 3 is provided in multiple groups on the bottom of the mold shell 2 and symmetrically; the pad disc 31 is fixedly connected to the bottom end of the damping spring 3 away from the mold shell 2; the damper 32 is hingedly connected to the outer side wall of the mold shell 2; the damper 32 is provided in multiple groups on the outer side wall of the mold shell 2; the support foot disc 33 is hingedly connected to the end of the damper 32 away from the mold shell 2; in work, before pouring, the device is placed in the working area, the pad disc 31 contacts the ground, the damper 32 is rotated, the support foot disc 33 contacts the ground and supports the device, and the damping spring 3 and the damper 32 weaken the vibration when the device vibrates or external vibration is transmitted; this step forms a damping structure through the setting of the damping spring 3, the pad disc 31, the damper 32 and the support foot disc 33, realizes the weakening of the vibration of the device during pouring or the transmission of external vibration, solves the situation that the vibration of the device during pouring causes the metal liquid to shake in the pouring mold 1, reduces the situation that the shaking of the metal liquid causes the sand hole or loose of the casting, improves the stability of the metal liquid after pouring into the pouring mold 1, and improves the quality of the check valve production.

[0027] As shown in Figure 3As shown, the quick release assembly includes a fixed clamp 4, a locking block 41 and a heat insulation rod 42; the fixed clamp 4 is fixedly connected to the side wall of a set of mold shells 2; the fixed clamp 4 is provided on the side wall of a set of mold shells 2 in multiple groups and symmetrically; the locking block 41 is rotatably connected to the side wall of another set of mold shells 2; the locking block 41 is provided on the side wall of another set of mold shells 2 in multiple groups and symmetrically; the heat insulation rod 42 is fixedly connected to the end of the locking block 41 away from the mold shell 2; in work, after the mold shell 2 is combined, the heat insulation rod 42 is rotated to lock the locking block 41, the locking block 41 is clamped in the fixed clamp 4, a pair of mold shells 2 are fixed, after cooling is completed, the locking block 41 is opened, a pair of mold shells 2 are separated, and the pouring mold 1 is taken out; this step forms a quick release fixing structure through the setting of the fixed clamp 4, the locking block 41 and the heat insulation rod 42, realizes the functions of quickly fixing and separating a pair of mold shells 2, solves the problem that the combination and separation of the mold shell 2 is relatively cumbersome, and improves the convenience of combination and separation of the device.

[0028] As shown in Figure 2 A set of the inner side walls of the protective cover 21 are fixedly connected with a fixed plate 5; the fixed plate 5 is slidingly connected with a funnel 51 near the middle part of the straight sprue 13; the funnel 51 is inserted into the straight sprue 13; in work, when the metal liquid is poured, the funnel 51 is inserted into the straight sprue 13, and then the metal liquid is poured into the funnel 51, and the metal liquid flows to the inside of the pouring mold 1 through the funnel 51 for pouring; this step improves the convenience of pouring the metal liquid through the setting of the fixed plate 5 and the funnel 51, and reduces the leakage of the metal liquid.

[0029] As shown in Figure 4 The bottom of the support foot disc 33 is fixedly connected with anti-skid teeth 6; the anti-skid teeth 6 are provided in multiple groups on the bottom of the support foot disc 33 and are uniformly distributed on the bottom of the support foot disc 33; in work, when the support foot disc 33 contacts the ground, the anti-skid teeth 6 are inserted into the ground to increase the friction between the support foot disc 33 and the ground; this step increases the friction between the support foot disc 33 and the ground through the setting of the anti-skid teeth 6, reduces the slipping of the support foot disc 33, and improves the stability of the device in work.

[0030] As shown in Figure 3 The protective cover 21 is made of high-temperature-resistant material; in work, the protective cover 21 is made of high-temperature-resistant material, which reduces the damage of the metal liquid to the protective cover 21, improves the service life of the protective cover 21, and improves the safety of the device in work.

[0031] When working, the pouring mold 1 is placed in a stable area when pouring the metal liquid, the metal liquid is poured into the pouring mold 1 through the straight sprue 13, the metal liquid flows to the inner sprue 15, and then flows to the blind riser 14 through the cross sprue 16, under the action of gravity, the metal liquid flows out of the blind riser 14 and fills the space in the check valve body cavity 12, the air is squeezed out from bottom to top by the metal liquid and is discharged through the open riser 11, when the metal liquid reaches the inside of the open riser 11, the pouring of the metal liquid is stopped, and after the pouring is completed, the pouring mold 1 is placed in a cooling area for cooling and solidification; before pouring, a pair of mold shells 2 are combined together and fixed through the quick release assembly, the pouring mold 1 is placed in the mold shell 2, when pouring, the excess metal liquid overflows and flows into the protective cover 21 to be collected, the heat insulation pad 22 plays a heat insulation role to reduce heat transfer to the heat insulation pad 22; the device is placed in a working area, the pad disc 31 is in contact with the ground, the damping device 32 is rotated, the supporting foot disc 33 is in contact with the ground and supports the device, and when the device vibrates or external vibration is transmitted, the damping spring 3 and the damping device 32 weaken the vibration; after the mold shell 2 is combined, the heat insulation rod 42 is rotated to lock the block 41, the block 41 is clamped in the fixed clamp 4, and the pair of mold shells 2 are fixed, after cooling is completed, the block 41 is opened, the pair of mold shells 2 are separated, and the pouring mold 1 is taken out; when pouring the metal liquid, the funnel 51 is inserted into the straight sprue 13, and then the metal liquid is poured into the funnel 51, and the metal liquid flows into the pouring mold 1 through the funnel 51 for pouring; when the supporting foot disc 33 is in contact with the ground, the anti-skid teeth 6 are inserted into the ground to increase the friction force between the supporting foot disc 33 and the ground; the protective cover 21 is made of high-temperature-resistant material to reduce the damage of the metal liquid to the protective cover 21, prolong the service life of the protective cover 21, and improve the safety of the device when working.

[0032] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A bottom casting system for a check valve, comprising a casting mold (1); characterized in that: The casting mold (1) has an open riser (11), a check valve body cavity (12), a sprue (13), a concealed riser (14), an ingate (15), and a runner (16) inside. The open riser (11) and the sprue (13) are located at the top of the casting mold (1) and communicate with the outside. The bottom end of the sprue (13) communicates with the ingate (15). Multiple sets of runners (16) are arranged inside the casting mold (1). The end of the ingate (15) away from the sprue (13) communicates with multiple sets of runners (16). The ends of the multiple sets of runners (16) away from the ingate (15) communicate with the concealed riser (14). The concealed riser (14) communicates with the inside of the check valve body cavity (12). The outer wall of the casting mold (1) is provided with a protective component. The side wall of the protective component is provided with a quick-release component. The bottom of the protective component is provided with a shock-absorbing component.

2. The bottom casting system for a check valve according to claim 1, characterized in that: The protective components include a mold shell (2), a protective cover (21), and a heat insulation pad (22); a pair of mold shells (2) are provided on the outer side wall of the casting mold (1) and are arranged symmetrically; the pair of mold shells (2) are fixedly connected by a quick-release assembly; the protective cover (21) is fixedly connected to the outer side wall of the mold shell (2); the heat insulation pad (22) is fixedly connected to the bottom of the inner side wall of the protective cover (21).

3. The bottom casting system for a check valve according to claim 2, characterized in that: The shock absorption assembly includes a shock absorption spring (3), a pad (31), a damper (32), and a support foot plate (33); the shock absorption spring (3) is fixedly connected to the bottom of the mold shell (2); multiple sets of the shock absorption spring (3) are provided at the bottom of the mold shell (2) and are arranged symmetrically; the pad (31) is fixedly connected to the bottom end of the shock absorption spring (3) away from the mold shell (2); the damper (32) is hinged to the outer wall of the mold shell (2); multiple sets of the damper (32) are provided on the outer wall of the mold shell (2); the support foot plate (33) is hinged to the end of the damper (32) away from the mold shell (2).

4. The bottom casting system for a check valve according to claim 2, characterized in that: The quick-release assembly includes a fixing clip (4), a locking block (41), and a heat insulation rod (42); the fixing clip (4) is fixedly connected to the side wall of a set of mold shells (2); multiple sets of fixing clips (4) are provided on the side wall of a set of mold shells (2) and are arranged symmetrically; the locking block (41) is rotatably connected to the side wall of another set of mold shells (2); multiple sets of locking blocks (41) are provided on the side wall of another set of mold shells (2) and are arranged symmetrically; the heat insulation rod (42) is fixedly connected to the end of the locking block (41) away from the mold shell (2).

5. A bottom casting system for a check valve according to claim 2, characterized in that: A set of protective covers (21) has a fixed plate (5) fixedly connected to the inner wall; a funnel (51) is slidably connected to the fixed plate (5) near the middle of the sprue (13); the funnel (51) is inserted into the sprue (13).

6. A bottom casting system for a check valve according to claim 3, characterized in that: The bottom of the support foot plate (33) is fixedly connected with anti-slip teeth (6); multiple sets of anti-slip teeth (6) are provided on the bottom of the support foot plate (33) and are evenly distributed on the bottom of the support foot plate (33).

7. A bottom casting system for a check valve according to claim 2, characterized in that: The protective cover (21) is made of high-temperature resistant material.

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