Sand treatment device for casting nodular cast iron well lid

Abstract

The utility model discloses a sand treatment device for nodular cast iron well lid casting, which relates to the technical field of foundry sand treatment and comprises a screening box for screening foundry sand, a plurality of groups of screens with different mesh numbers are arranged in the screening box, the screening box drives the plurality of groups of screens to shake so as to screen the foundry sand, and the screens in the screening box can be quickly detached. According to different casting sand requirements, the screens in the screening box can be replaced rapidly, the applicability of the casting sand screening device is improved, sand on the different screens is cleaned through the screening box, accurate classification of the casting sand is achieved, and the production efficiency of casting parts is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundry sand processing, in particular to a sand processing device for casting a ductile iron manhole cover. Background Art

[0002] Before using foundry sand, some processing and preparation work is usually required to ensure that the sand can play the best effect in the casting process. Screening foundry sand can control its particle size distribution and ensure that the sand grain size in the foundry sand is within a certain range. Different casting processes and different casting shapes usually require foundry sand of a specific particle size, so screening can ensure that the sand meets these requirements. Uneven sand grain size will affect the surface quality and accuracy of the casting. Sand grains that are too large or too small may cause increased surface roughness or insufficient filling of details, affecting the dimensional accuracy and surface finish of the casting. Through screening, the uniformity and consistency of the sand material are ensured, and the surface quality of the casting is improved.

[0003] The Chinese invention patent application with publication number CN114433782A discloses a foundry sand processing system, which screens the foundry sand by means of a screening device, and guides and screens the mixture by means of a discharge chute, and the foundry sand continues to be used after screening. However, this device processes the used molding sand, and the foundry sand needs to be screened before use, and foundry sand of suitable specifications is used to ensure the casting effect of the casting. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a sand processing device for casting ductile iron manhole covers.

[0005] To solve the above technical problems, the technical solution used by the utility model is: a sand processing device for casting ductile iron manhole covers, comprising a base, a screening box is arranged on the base, the screening box slides on the base, a plurality of groups of screens are detachably arranged in the screening box, the screens have different mesh sizes, a plurality of groups of openings are arranged on the screening box, a baffle plate 2 and a baffle plate 1 are slidably arranged on the screening box, the baffle plate 2 and the baffle plate 1 respectively block the openings on the sides of the screening box, a push plate 1 and a push plate 2 are slidably arranged in the screening box, the push plate 1 and the push plate 2 push out the casting sand that has been screened in the screening box.

[0006] Furthermore, a movable plate is slidably arranged on the screening box, and a plurality of groups of pushing columns are arranged on the movable plate, and the pushing columns push the screen to slide in the screening box.

[0007] Furthermore, a plurality of groups of transmission rollers are rotatably arranged in the screening box, and the transmission rollers are used to drive the screen to move.

[0008] Furthermore, a plurality of feed ports are arranged at the upper end of the screening box, and a plurality of stirring rollers are rotatably arranged in the feed ports, and the stirring rollers break up the casting sand.

[0009] Furthermore, a plurality of sets of triangular scrapers are arranged in the screening box, and the triangular scrapers are used to clean the screen when the screen is removed.

[0010] Furthermore, a plurality of groups of springs are arranged between the base and the screening box, a plurality of groups of vibration motors are arranged on the sides of the screening box, and the vibration motors drive the screening box to shake on the base.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model automatically screens the foundry sand and automatically recycles the foundry sand of different specifications after screening. The utility model can quickly replace different screens according to the requirements of different foundry sands, thereby improving the applicability of the utility model. At the same time, the surface of the screen is automatically cleaned when the screen is replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a left view of the overall structure of the utility model.

[0013] Figure 2 for Figure 1 Structural cross-section view in the AA direction.

[0014] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 4 It is a sectional view of the overall structure of the utility model.

[0016] Figure 5 It is a partial structural sectional view of the utility model.

[0017] Figure markings: 1-base; 2-screening box; 3-vibration motor; 4-spring; 5-baffle one; 6-baffle two; 7-screen; 8-feeding port; 9-moving plate; 10-pushing column; 11-transmission roller; 12-stirring roller; 13-triangular scraper; 14-push plate one; 15-push plate two. DETAILED DESCRIPTION

[0018] refer to Figures 1 to 5 The sand processing device for casting a ductile iron manhole cover shown in the figure includes a screening box 2 that drives the screen 7 to shake, and a plurality of groups of different screens 7 are arranged on the screening box 2. The casting sand is placed on the screen 7, and the casting sand is screened by shaking the screen 7. A push plate 15 is slidingly arranged in the screening box 2, and the push plate 15 collects the screened casting sand to ensure that the screened casting sand meets the casting requirements.

[0019] A screening box 2 is arranged on the base 1, multiple groups of springs 4 are arranged between the base 1 and the screening box 2, and multiple groups of vibration motors 3 are arranged on both sides of the screening box 2. Since multiple groups of springs 4 are arranged between the base 1 and the screening box 2, when the vibration motor 3 is driven, the vibration motor 3 drives the screening box 2 to shake on the base 1, and two groups of feed ports 8 are arranged on the upper end of the screening box 2. Multiple groups of stirring rollers 12 are rotatably arranged in the feed ports 8, and foundry sand to be processed is added into the screening box 2, and the stirring rollers 12 are driven to rotate. The stirring rollers 12 break up the foundry sand that sticks together, so that the sand is dispersed when entering the screening box 2, thereby improving the screening effect of the sand, and multiple groups of screens 7 are slidably arranged inside the screening box 2, and the mesh number of the multiple groups of screens 7 is The mesh number of a group of screens 7 installed on the screening box 2 closest to the feed port 8 is the largest, and the mesh number of a group of screens 7 closer to the base 1 is smaller. After the foundry sand enters the screening box 2, it falls on the first group of screens 7, and the sand is screened by shaking the screens 7. A plurality of groups of openings are arranged on the screening box 2. A baffle 5 and a push plate 14 are slidably arranged at the lower end of the screening box 2. The baffle 5 blocks the opening at the lower end of the screening box 2, and the push plate 14 slides inside the screening box 2. The push plate 14 pushes out the foundry sand with the smallest mesh number in the screening box 2. A plurality of groups of baffles 2 6 and push plates 2 15 are also slidably arranged on the screening box 2. The baffle 2 6 blocks the plurality of openings on the side of the screening box 2. When needed When the screened sand is discharged, a corresponding set of baffle plates 6 is driven to move, and the baffle plates 6 release the blocking on the opening of the screening box 2, and the push plates 15 are driven to slide in the screening box 2, and the push plates 15 push out the sand on the corresponding set of screens 7, so as to collect casting sand of different mesh sizes. A triangular scraper 13 is arranged in the screening box 2, and the triangular scraper 13 is fitted with the screen 7. A moving plate 9 is slidingly arranged in the screening box 2, and a plurality of pushing columns 10 are arranged on the moving plate 9, and the pushing columns 10 are fitted with the baffle plates 6. When the moving plate 9 is driven, the moving plate 9 drives the pushing columns 10 to move, and the pushing columns 10 push the screen 7 to slide in the screening box 2, and a plurality of transmission rollers 11 are rotatably arranged in the screening box 2. The conveying roller 11 drives the screen 7 to slide in the screening box 2. When the screen 7 needs to be replaced, the movable plate 9 is driven to move, and the movable plate 9 drives the pushing column 10 to move. The pushing column 10 pushes the screen 7 to slide in the screening box 2, and the screen 7 is pushed between multiple groups of conveying rollers 11. The conveying rollers 11 are driven to rotate, and the conveying rollers 11 drive the screen 7 to move out of the screening box 2, and the removal of the screen 7 is completed. When the screen 7 is moved out of the screening box 2, the triangular scraper 13 cleans the surface of the screen 7, and the screen 7 to be installed is inserted into the screening box 2. The screen 7 is inserted into two groups of conveying rollers 11, and the conveying rollers 11 are driven to rotate. The conveying rollers 11 drive the screen 7 to enter the screening box 2, and the installation of the screen 7 is completed.

[0020] Working principle: during operation, the foundry sand to be processed is placed into the screening box 2 through the feed port 8, and the stirring roller 12 is driven to rotate. The stirring roller 12 breaks up the agglomerated foundry sand, and then the agglomerated foundry sand falls on the screen 7, driving the vibration motor 3 to work, and the vibration motor 3 drives the screening box 2 to shake on the base 1, and the screening box 2 drives multiple groups of screens 7 to slide, and the screen 7 screens the foundry sand. The closer to the base 1, the smaller the mesh number of the foundry sand. When the foundry sand at the bottom of the screening box 2 needs to be taken out, the baffle 15 is driven to move, and the baffle 15 releases the blockage at the bottom opening of the screening box 2, and the push plate 14 is driven to slide in the screening box 2, and the push plate 14 pushes the foundry sand with the smallest mesh number at the bottom of the screening box 2 to collect the foundry sand. When it is necessary to collect foundry sand of other mesh numbers, the baffle 26 is driven to slide on the screening box 2, and the baffle 26 is released For the blocks at other openings on the screening box 2, the push plate 2 15 is driven to slide on the screening box 2, and the push plate 2 15 discharges the casting sand on the screen 7 through the opening of the screening box 2 to realize the collection of casting sand of different mesh sizes. When the screen 7 needs to be replaced, the movable plate 9 is driven to slide on the screening box 2, and the movable plate 9 drives the pushing column 10 to move, and the pushing column 10 pushes the screen 7 to slide in the screening box 2. After the screen 7 is inserted into the transmission roller 11, the transmission roller 11 is driven to rotate, and the transmission roller 11 drives the screen 7 to move, and the screen 7 is moved out of the screening box 2. When the screen 7 is moved out, the triangular scraper 13 cleans the surface of the screen 7, and the screen 7 to be installed is inserted into the screening box 2, and the screen 7 is inserted into two sets of transmission rollers 11, and the transmission roller 11 is driven to rotate, and the transmission roller 11 drives the screen 7 to enter the screening box 2, and the installation of the screen 7 is completed.

Claims

1. A sand processing device for casting ductile iron manhole covers, comprising a base (1), characterized in that: A screening box (2) is arranged on the base (1), and the screening box (2) slides on the base (1). A plurality of groups of screens (7) are detachably arranged in the screening box (2), and the mesh sizes of the screens (7) are different. A plurality of groups of openings are arranged on the screening box (2). A baffle plate 2 (6) and a baffle plate 1 (5) are slidably arranged on the screening box (2), and the baffle plate 2 (6) and the baffle plate 1 (5) respectively block the openings on the side of the screening box (2). A push plate 1 (14) and a push plate 2 (15) are slidably arranged in the screening box (2), and the push plate 1 (14) and the push plate 2 (15) push out the foundry sand that has been screened in the screening box (2).

2. The sand processing device for ductile iron manhole cover casting according to claim 1 is characterized in that: A moving plate (9) is slidably arranged on the screening box (2), and a plurality of groups of pushing columns (10) are arranged on the moving plate (9). The pushing columns (10) push the screen (7) to slide in the screening box (2).

3. The sand processing device for ductile iron manhole cover casting according to claim 1 is characterized in that: A plurality of groups of transmission rollers (11) are rotatably arranged in the screening box (2), and the transmission rollers (11) are used to drive the screen (7) to move.

4. The sand processing device for ductile iron manhole cover casting according to claim 1 is characterized in that: The upper end of the screening box (2) is provided with a plurality of feed ports (8), and a plurality of stirring rollers (12) are rotatably arranged in the feed ports (8), and the stirring rollers (12) break up the foundry sand.

5. The sand processing device for ductile iron manhole cover casting according to claim 1 is characterized in that: A plurality of sets of triangular scrapers (13) are arranged in the screening box (2), and the triangular scrapers (13) are used to clean the screen (7) when the screen (7) is removed.

6. The sand processing device for ductile iron manhole cover casting according to claim 1 is characterized in that: A plurality of groups of springs (4) are arranged between the base (1) and the screening box (2), and a plurality of groups of vibration motors (3) are arranged on the side of the screening box (2). The vibration motors (3) drive the screening box (2) to shake on the base (1).

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