Sand mixer for precision casting

Abstract

The utility model provides a sand mixer for precision casting, and belongs to the technical field of machinery. The problems of single mixing mode and poor efficiency in the prior art are solved. The sand mixer for precision casting comprises a supporting frame and a sand mixing cylinder fixedly connected to the supporting frame, and is characterized by further comprising a first stirring assembly, a second stirring assembly, a first driving part and a second driving part, the sand mixing cylinder is internally provided with a cavity, the upper portion of the sand mixing cylinder is provided with an opening, and a discharging pipe communicated with an inner cavity of the sand mixing cylinder is arranged on the lower portion of the outer side of the sand mixing cylinder; and a valve is arranged on the discharging pipe, the first stirring assembly is axially arranged in the sand mixing cylinder in a penetrating mode, and the lower end of the first stirring assembly is rotationally connected with the bottom of the sand mixing cylinder. The sand mixer has the advantages of multidirectional stirring, large stirring coverage, high sand mixing efficiency and more sufficient and uniform sand mixing.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a sand mixer for precision casting. Background Art

[0002] At present, sand mixers are used to mix raw materials in precision casting projects. Sand mixers are equipment that evenly mix the components in the molding sand and effectively coat the binder on the surface of the sand particles. However, existing sand mixers have a single mixing method and poor mixing efficiency. They cannot mix the raw materials quickly and evenly, resulting in a long mixing time, which reduces the practicability of the sand mixers. Utility Model Content

[0003] The utility model aims to provide a sand mixer for precision casting which can improve the sand mixing efficiency and uniformity in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A sand mixing machine for precision casting comprises a support frame and a sand mixing drum, the sand mixing drum is fixedly connected to the support frame, and is characterized in that it also comprises a stirring component 1, a stirring component 2, a driving member 1 and a driving member 2. The sand mixing drum has an internal cavity and an upper opening, and a discharge pipe connected to the inner cavity of the sand mixing drum is arranged at the lower part of the outer side of the sand mixing drum, and a valve is arranged on the discharge pipe, the stirring component 1 is axially penetrated into the sand mixing drum and the lower end of the stirring component 1 is rotatably connected to the bottom of the sand mixing drum, the driving member 1 is arranged at the bottom of the outer side of the sand mixing drum and the driving member 1 is transmission connected to the stirring component 1, the stirring component 2 is arranged on both sides of the stirring component 1 and the stirring component 2 is rotationally connected to the side wall of the sand mixing drum, and the driving member 2 is arranged on the outside of the sand mixing drum and the driving member 2 is transmission connected to the stirring component 2.

[0006] The sand mixer for precision casting facilitates the addition of materials into the sand mixing barrel through the structure of the internal cavity and the upper opening of the sand mixing barrel. At the same time, the arrangement of the discharge pipe facilitates the output of the mixed material body, and the discharge process can be flexibly controlled by using a valve; the materials are mixed and stirred in multiple directions through the cooperation of the stirring component 1 and the stirring component 2, thereby improving the problem of poor sand mixing effect caused by a single stirring method and improving the sand mixing efficiency and uniformity; the stirring component 1 and the stirring component 2 are driven to operate by the driving component 1 and the driving component 2 respectively, so the sand mixing power is strong and the degree of automation is high, and the driving component 1 and the driving component 2 are both arranged outside the sand mixing barrel, which is convenient for maintenance and does not occupy the working space in the sand mixing barrel.

[0007] In the above-mentioned sand mixer for precision casting, the stirring component 1 includes a central shaft, a shaft cap, a sleeve and stirring blades. The lower end of the central shaft is rotatably connected to the bottom of the sand mixing barrel, the shaft cap is threadedly connected to the upper end of the central shaft, the sleeve is sleeved on the central shaft and the two are fixedly connected by fasteners, and the stirring blades are fixedly connected to the outside of the sleeve.

[0008] The central shaft is connected to a driving member, which drives the central shaft to rotate, and the central shaft drives the sleeve to rotate, so that the stirring blade follows the rotation to stir the material. In addition, the shaft cap is threadedly connected to the central shaft, and the sleeve is connected to the central shaft by fasteners, which are convenient for loading and unloading. When the stirring blade needs maintenance or is severely damaged by wear, the sleeve connected to the stirring blade can be removed from the central shaft after removing the shaft cap and the fasteners, which is convenient for maintenance and replacement of parts, flexible and convenient.

[0009] In the above-mentioned sand mixer for precision casting, the number of the stirring blades is several, the several stirring blades are arranged in an array along the circumference of the sleeve, and the several stirring blades are arranged equidistantly along the axial direction of the sleeve.

[0010] The arrangement of a plurality of stirring blades increases the stirring coverage of the stirring component, improves the stirring efficiency, and during the stirring process, a vortex is formed in the sand mixing barrel for the material, thereby increasing the interaction between the materials and making the sand mixing more complete and uniform.

[0011] In the above-mentioned sand mixer for precision casting, the second stirring component includes a plurality of laterally arranged stirring units, and the plurality of stirring units are symmetrically arranged on both sides of the first stirring component.

[0012] A plurality of laterally arranged stirring units increase the stirring coverage of the stirring assembly 2, ensuring that the materials are fully mixed in the lateral direction, and further improving the uniformity of the sand mixing.

[0013] In the above-mentioned sand mixer for precision casting, the number of the driving members 2 is two, the two driving members 2 are symmetrically arranged on both sides of the sand mixing barrel and the two driving members 2 are respectively connected to the stirring units symmetrically arranged on both sides of the stirring component 1.

[0014] The two driving parts are used to drive the stirring units on both sides respectively, which optimizes the power transmission path, reduces energy loss, and enables each stirring unit to work independently and efficiently.

[0015] In the above-mentioned sand mixer for precision casting, the stirring unit includes a shaft and a stirring rod. The shaft is rotatably connected to the side wall of the sand mixing cylinder and the driving member 2 is transmission-connected to the shaft. There are several stirring rods, which are symmetrically arranged on both sides of the shaft.

[0016] The shaft is connected to the second driving member, and the second driving member drives the shaft to rotate, driving the stirring rod to rotate around the shaft, so that the stirring rod stirs the material, and the number of stirring rods is several, which increases the coverage of the stirring, further improves the sand mixing effect, and makes the sand mixing more uniform.

[0017] In the above-mentioned sand mixer for precision casting, the driving member 1 includes a motor 1, and the motor 1 is fixedly connected to the bottom of the outer side of the sand mixer and is transmission-connected to the central shaft.

[0018] The motor 1 is connected to the central shaft in a transmission manner, so that the motor 1 directly drives the stirring component 1 to ensure transmission efficiency.

[0019] In the above-mentioned sand mixer for precision casting, the second driving component includes a shell, a synchronous pulley and a second motor. The shell is fixedly connected to the outside of the sand mixing cylinder, the synchronous pulley is arranged in the shell and the synchronous pulley is correspondingly connected to the shaft rod in a transmission connection, and the motor is fixedly connected to the outside of the shell and the motor is connected to the synchronous pulley in a transmission connection.

[0020] The housing provides a stable connection platform for the synchronous pulley and the motor, ensuring the stability of the entire drive unit 2. When the drive unit 2 is running, the motor drives the synchronous pulley to run, and the synchronous pulley drives the shaft to rotate, so that the shaft drives the stirring rod to rotate to stir the material.

[0021] In the above-mentioned sand mixer for precision casting, the synchronous pulley includes a driving wheel, a driven wheel and a transmission belt, the driving wheel is located above the driven wheel, the transmission belt is sleeved on the driving wheel and the driven wheel and tensioned, and the above-mentioned motor is connected to the driving wheel.

[0022] The motor drives the driving wheel to rotate, and the driving wheel drives the corresponding stirring unit to rotate to stir the material. At the same time, the rotation of the driving wheel is transmitted to the driven wheel through the transmission belt. The driven wheel follows the rotation and drives the corresponding stirring unit to rotate, so that the stirring units driven by the same driving member can run synchronously to stir the material and make it fully mixed.

[0023] In the above-mentioned sand mixer for precision casting, a feeding hopper is also provided at the upper opening of the sand mixing cylinder.

[0024] The setting of the feeding hopper enlarges the feeding diameter, making it easier for materials to be added into the sand mixing drum quickly and accurately, thus improving the material input efficiency.

[0025] Compared with the prior art, the sand mixer for precision casting achieves multi-directional mixing of materials through the cooperation of stirring component one and stirring component two, thereby expanding the stirring coverage, increasing the interaction between materials, improving the problem of poor sand mixing effect caused by a single stirring method, improving the sand mixing efficiency, and making the sand mixing more complete and uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the sand mixer for precision casting.

[0027] In the figure, 1. support frame; 2. motor 1; 3. stirring blade; 4. driven wheel; 5. housing; 6. transmission belt; 7. motor 2; 8. driving wheel; 9. sand mixing cylinder; 10. feed hopper; 11. fastener; 12. shaft cap; 13. stirring rod; 14. shaft rod; 15. sleeve; 16. valve; 17. discharge pipe; 18. center axis. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0031] like Figure 1As shown, the sand mixer for precision casting includes a support frame 1 and a sand mixing barrel 9, the sand mixing barrel 9 is fixedly connected to the support frame 1, and also includes a stirring component 1, a stirring component 2, a driving member 1, and a driving member 2. The sand mixing barrel 9 has an internal cavity and an upper opening, and a discharge pipe 17 connected to the inner cavity of the sand mixing barrel 9 is arranged at the lower outer side of the sand mixing barrel 9, and a valve 16 is arranged on the discharge pipe 17. The stirring component 1 is axially penetrated into the sand mixing barrel 9 and the lower end of the stirring component 1 is rotatably connected to the bottom of the sand mixing barrel 9, the driving member 1 is arranged at the outer bottom of the sand mixing barrel 9 and the driving member 1 is transmission-connected to the stirring component 1, the stirring component 2 is arranged on both sides of the stirring component 1 and the stirring component 2 is rotationally connected to the side wall of the sand mixing barrel 9, and the driving member 2 is arranged on the outer side of the sand mixing barrel 9 and the driving member 2 is transmission-connected to the stirring component 2.

[0032] The stirring component 1 includes a central shaft 18, a shaft cap 12, a sleeve 15 and a stirring blade 3. The lower end of the central shaft 18 is rotatably connected to the bottom of the sand mixing cylinder 9, the shaft cap 12 is threadedly connected to the upper end of the central shaft 18, the sleeve 15 is sleeved on the central shaft 18 and the two are fixedly connected by a fastener 11, and the stirring blade 3 is fixedly connected to the outer side of the sleeve 15.

[0033] The number of the stirring blades 3 is several, and the several stirring blades 3 are arranged in an array along the circumference of the sleeve 15 and the several stirring blades 3 are arranged equidistantly along the axial direction of the sleeve 15 .

[0034] The second stirring component comprises a plurality of stirring units arranged transversely, and the plurality of stirring units are symmetrically arranged on both sides of the first stirring component.

[0035] The number of the second driving members is two, and the two second driving members are symmetrically arranged at both sides of the sand mixing cylinder 9 and the two second driving members are respectively connected to the stirring units symmetrically arranged at both sides of the stirring component 1.

[0036] The stirring unit includes a shaft 14 and a stirring rod 13 . The shaft 14 is rotatably connected to the side wall of the sand mixing cylinder 9 , and the second driving member is transmission-connected to the shaft 14 . There are several stirring rods 13 symmetrically arranged on both sides of the shaft 14 .

[0037] The driving member 1 includes a motor 1 2 , which is fixedly connected to the bottom of the outer side of the sand mixing cylinder 9 and is in transmission connection with the central shaft 18 .

[0038] The second driving member includes a housing 6, a synchronous pulley and a second motor 7. The housing 6 is fixedly connected to the outside of the sand mixing drum 9. The synchronous pulley is arranged in the housing 6 and is correspondingly connected to the shaft 14. The motor is fixedly connected to the outside of the housing 6 and is connected to the synchronous pulley.

[0039] The synchronous pulley comprises a driving wheel 8, a driven wheel 5 and a transmission belt. The driving wheel 8 is located above the driven wheel 5. The transmission belt is sleeved on the driving wheel 8 and the driven wheel 5 and tensioned. The above-mentioned motor is connected to the driving wheel 8.

[0040] A material feeding hopper 10 is also provided at the upper opening of the sand mixing cylinder 9 .

[0041] The sand mixer for precision casting uses the structure of the internal cavity and the upper opening of the sand mixing barrel 9 to facilitate the addition of materials into the barrel. At the same time, the arrangement of the discharge pipe 17 facilitates the output of the mixed material body, and the valve 16 is used to flexibly control the discharge process; the stirring component 1 and the stirring component 2 cooperate to stir and mix the materials in multiple directions, thereby improving the problem of poor sand mixing effect caused by a single stirring method and improving the sand mixing efficiency and uniformity; the driving component 1 and the driving component 2 are respectively driven to operate the stirring component 1 and the stirring component 2, so the sand mixing power is strong and the degree of automation is high, and the driving component 1 and the driving component 2 are both arranged outside the sand mixing barrel 9, which is convenient for maintenance and does not occupy the working space in the sand mixing barrel 9.

[0042] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A sand mixer for precision casting, comprising a support frame and a sand mixing cylinder, wherein the sand mixing cylinder is fixedly connected to the support frame, characterized in that: It also includes a stirring component 1, a stirring component 2, a driving component 1, and a driving component 2. The sand mixing cylinder has an internal cavity and an upper opening. A discharge pipe connected to the inner cavity of the sand mixing cylinder is provided at the lower outer side of the sand mixing cylinder, and a valve is provided on the discharge pipe. The stirring component 1 is axially inserted into the sand mixing cylinder and the lower end of the stirring component 1 is rotatably connected to the bottom of the sand mixing cylinder. The driving component 1 is arranged at the bottom outer side of the sand mixing cylinder and the driving component 1 is transmission connected to the stirring component 1. The stirring component 2 is arranged on both sides of the stirring component 1 and the stirring component 2 is rotationally connected to the side wall of the sand mixing cylinder. The driving component 2 is arranged on the outside of the sand mixing cylinder and the driving component 2 is transmission connected to the stirring component 2.

2. The sand mixer for precision casting according to claim 1, characterized in that: The stirring component 1 includes a central shaft, a shaft cap, a sleeve and a stirring blade. The lower end of the central shaft is rotatably connected to the bottom of the sand mixing cylinder, the shaft cap is threadedly connected to the upper end of the central shaft, the sleeve is sleeved on the central shaft and the two are fixedly connected by a fastener, and the stirring blade is fixedly connected to the outside of the sleeve.

3. The sand mixer for precision casting according to claim 2, characterized in that: The number of the stirring blades is several, and several stirring blades are arranged in an array along the circumference of the sleeve and several stirring blades are arranged equidistantly along the axial direction of the sleeve.

4. The sand mixer for precision casting according to claim 3, characterized in that: The second stirring component comprises a plurality of stirring units arranged transversely, and the plurality of stirring units are symmetrically arranged on both sides of the first stirring component.

5. The sand mixer for precision casting according to claim 4, characterized in that: The number of the second driving members is two, and the two second driving members are symmetrically arranged on both sides of the sand mixing cylinder and are respectively connected to the stirring units symmetrically arranged on both sides of the stirring component one.

6. The sand mixer for precision casting according to claim 5, characterized in that: The stirring unit comprises a shaft and a stirring rod. The shaft is rotatably connected to the side wall of the sand mixing cylinder and the second driving member is transmission-connected to the shaft. There are several stirring rods, which are symmetrically arranged on both sides of the shaft.

7. The sand mixer for precision casting according to claim 6, characterized in that: The driving member 1 includes a motor 1, which is fixedly connected to the bottom of the outer side of the sand mixing cylinder and is transmission-connected to the central shaft.

8. The sand mixer for precision casting according to claim 7, characterized in that: The second driving member includes a shell, a synchronous pulley and a second motor. The shell is fixedly connected to the outside of the sand mixing drum, the synchronous pulley is arranged in the shell and the synchronous pulley is correspondingly connected to the shaft rod in a transmission connection, and the motor is fixedly connected to the outside of the shell and the motor is connected to the synchronous pulley in a transmission connection.

9. The sand mixer for precision casting according to claim 8, characterized in that: The synchronous pulley comprises a driving wheel, a driven wheel and a transmission belt, wherein the driving wheel is located above the driven wheel, the transmission belt is sleeved on the driving wheel and the driven wheel and is tensioned, and the motor is connected to the driving wheel.

10. The sand mixer for precision casting according to claim 9, characterized in that: A material feeding hopper is also arranged at the upper opening of the sand mixing cylinder.

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