A screening device for foundry sand raw material processing

Abstract

This utility model provides a screening device for processing foundry sand raw materials, including a screening box, support legs on the side of the screening box, multiple springs vertically arranged on the top and bottom walls of the screening box, a mounting frame at the lower ends of the multiple springs, a vibrating motor, a lower housing, a discharge pipe, a screen cylinder with a conical lower end set in the mounting frame, a discharge pipe offset from the discharge pipe at the bottom of the screen cylinder, a control valve on the discharge pipe, and a discharge pipe sleeved with the discharge pipe on the lower housing. The screening device for processing foundry sand raw materials according to this utility model not only meets the basic requirements for screening foundry sand fragments, but also prevents foundry sand fragments from leaving the screening structure before being completely screened, thus fully meeting people's usage needs.

Description

Technical Field

[0001] This utility model belongs to the field of foundry sand processing technology, and specifically relates to a screening device for processing foundry sand raw materials. Background Technology

[0002] In the production of foundry sand, some foundries crush large pieces of waste foundry sand and then screen them to remove impurities. Existing screening devices for raw foundry sand processing, while capable of separating large particles of waste from the crushed foundry sand, often use an inclined screening structure to screen a mixture of large particles and crushed foundry sand. This mixture easily slides off the screening structure quickly, causing some of the crushed foundry sand to be trapped by large impurities and slide off the screen as well. Therefore, this method cannot fully meet the needs of users.

[0003] For example, the utility model patent with announcement number CN215315488U discloses a casting sand impurity separation and screening device. In the technical solution of this patent document, the screening and separation component is used to separate impurities in waste casting sand. The screening and separation component is inclined, and the buffer chute is also inclined. The inclination direction of the buffer chute is opposite to the inclination direction of the screening and separation component. During the operation of the device, the mixed material can easily slide down quickly on the screening and separation component, which causes some casting sand fragments to fall into the impurity collection tank along with large particles of impurities before they have a chance to pass through the screen holes of the screening and separation component. Therefore, it will cause great inconvenience to people's use. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a screening device for processing foundry sand raw materials. It not only meets the basic requirements for screening foundry sand fragments, but also prevents foundry sand fragments from leaving the screening structure before being completely screened, thus fully meeting people's usage needs.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a screening device for processing foundry sand raw materials, including a screening box, a support leg provided on the side of the screening box, multiple springs vertically arranged on the top bottom wall of the screening box, a mounting frame provided at the lower end of the multiple springs, a vibration motor provided on the mounting frame, a lower box body with a conical lower end provided at the bottom of the mounting frame via a connecting rod, a discharge pipe provided at the bottom of the lower box body, a screen cylinder with a conical lower end provided in the mounting frame, a discharge pipe with a misaligned lower end provided at the bottom of the screen cylinder, a control valve provided on the discharge pipe, and a discharge pipe sleeved with the discharge pipe provided on the lower box body.

[0006] As a further improvement of this utility model, a guide slot is provided on the top and bottom walls of the screening box, and a guide plate that is plugged into and connected to the guide slot is provided on the mounting frame.

[0007] As a further improvement of this invention, a transparent observation window is also provided on the screening box. Through the transparent observation window, the internal condition of the screening box can be easily viewed.

[0008] As a further improvement of this utility model, the screening box is also equipped with a feed hopper corresponding to the filter cylinder. Through the feed hopper, workers can easily add the mixture of foundry sand fragments and impurities to be screened into the screening box.

[0009] As a further improvement of this utility model, an extension plate is also provided at the bottom side of the support leg, and an anchor bolt for connecting to the ground is also provided on the extension plate. The extension plate and the anchor bolt can prevent the device from being easily damaged by terrain changes.

[0010] As a further improvement of this utility model, the support leg is L-shaped. A reinforcing rod is also provided between the vertical and horizontal parts of the support leg. The reinforcing rod enhances the stability of the support leg.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] Firstly, the vibrating motor and multiple springs work together to vibrate the filter cylinder, thereby screening the mixture of foundry sand fragments and impurities. This prevents the foundry sand fragments from sliding directly out of the screening structure, thus allowing for more thorough screening. Furthermore, the screened foundry sand fragments can be quickly discharged from the lower chamber through the discharge pipe, and with the control valve open, large particles of impurities trapped in the filter cylinder can be transferred out of the filter cylinder.

[0013] Secondly, the insertion and cooperation of the guide slot and guide plate can make the mounting frame vibrate vertically smoothly, avoid lateral swaying, and prevent multiple springs from being easily damaged by deformation.

[0014] Thirdly, the connecting rod enables the mounting frame to drive the lower box and the discharge pipe to vibrate, thereby allowing the foundry sand fragments falling into the lower box and the impurities entering the discharge pipe to be quickly transferred out. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2This is a schematic diagram of the extension plate and anchor bolts of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the filter cylinder, feed pipe, guide slot, guide plate and connecting rod of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the filter cylinder, feed pipe and discharge pipe of this utility model.

[0020] In the diagram: 101, screening box; 102, support leg; 103, spring; 104, mounting frame; 105, vibrating motor; 106, lower box; 107, discharge pipe; 108, filter cylinder; 109, discharge pipe; 110, discharge pipe; 111, guide slot; 112, guide plate; 113, connecting rod; 114, control valve; 201, transparent observation window; 202, feed hopper; 203, extension plate; 204, anchor bolt; 205, reinforcing rod. Detailed Implementation

[0021] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0022] like Figure 1 As shown, a screening device for processing foundry sand raw materials includes a screening box 101. A support leg 102 is provided on the side end of the screening box 101. Multiple springs 103 are vertically fixed on the top and bottom walls of the screening box 101. The lower ends of the multiple springs 103 are jointly fixed to an installation frame 104. A vibration motor 105 is installed on the installation frame 104.

[0023] like Figure 1 , 3As shown in Figure 4, the bottom of the mounting frame 104 is provided with a lower box 106 with a conical lower end via a connecting rod 113. A discharge pipe 107 is provided at the bottom of the lower box 106. A screen cylinder 108 with a conical lower end is provided within the mounting frame 104. A discharge pipe 109, offset from the discharge pipe 107, is provided at the bottom of the screen cylinder 108. A control valve 114 is provided on the discharge pipe 109. A discharge pipe 110, sleeved with the discharge pipe 109, is provided on the lower box 106. A feed hopper 202 corresponding to the screen cylinder 108 is also provided on the screening box 101. The discharge pipe 109 includes a first vertical section connected to the bottom of the screen cylinder 108, a second vertical section slidably connected to the upper end of the discharge pipe 110 and offset from the first vertical section, and an inclined section located between the first and second vertical sections.

[0024] Workers can add the mixture of foundry sand fragments and impurities to be screened into the screen cylinder 108 through the feed hopper 202. Then, the vibration motor 105 can be started, and multiple springs 103 will cause the mounting frame 104 and the screen cylinder 108 to vibrate. The foundry sand fragments can pass through the filter holes of the screen cylinder 108 and fall into the lower box 106, and then be discharged through the discharge pipe 107. Large particles of fragments will remain in the screen cylinder 108 because they cannot pass through the filter holes.

[0025] Once the foundry sand fragments have all left the screen cylinder 108, the control valve 114 can be opened, allowing large particles of impurities to leave the screen cylinder 108 through the feed pipe 109, and then pass through the discharge pipe 107 into the lower box 106, thereby achieving the screening of the mixture and conveniently separating the foundry sand fragments and impurities, which then fall into the corresponding collection structures.

[0026] During vibration operation, the mounting frame 104 can also drive the lower box 106 and the discharge pipe 110 to vibrate through the connecting rod 113, so that the foundry sand fragments falling into the lower box 106 and the impurities entering the discharge pipe 110 can be quickly transferred out, thereby improving the smoothness and efficiency of the discharge, and thus improving the screening efficiency.

[0027] According to another embodiment of the present invention, such as Figure 3 As shown, a guide slot 111 is provided on the top and bottom wall of the screening box 101, and a guide plate 112 is provided on the mounting frame 104 to be inserted and connected to the guide slot 111. During the vibration operation of the mounting frame 104, the guide plate 112 can be inserted and engaged with the guide slot 111, thereby enabling the mounting frame 104 to vibrate vertically smoothly, avoiding lateral swaying, and preventing the multiple springs 103 from being easily deformed and damaged.

[0028] According to another embodiment of the present invention, such as Figure 1 , 2 As shown, a transparent observation window 201 is also provided on the screening box 101. Workers can easily observe the internal condition of the screening box 101 through the transparent observation window 201.

[0029] According to another embodiment of the present invention, such as Figure 2 As shown, an extension plate 203 is welded to the bottom side of the support leg 102, and an anchor bolt 204 for connecting to the ground is screwed onto the extension plate 203. By simply allowing the anchor bolt 204 to pass through the extension plate 203 and connect to the ground, the device can be prevented from being easily damaged by terrain changes.

[0030] According to another embodiment of the present invention, such as Figure 2 As shown, the support leg 102 is L-shaped. A reinforcing rod 205 is welded between the vertical and horizontal parts of the support leg 102. The reinforcing rod 205 enhances the stability of the support leg 102.

[0031] The vibrating motor 105 and multiple springs 103 work together to vibrate the screen cylinder 108, thereby screening the mixture of foundry sand fragments and impurities. This prevents the foundry sand fragments from sliding directly out of the screening structure, thus allowing for more thorough screening. Furthermore, the screened foundry sand fragments can be quickly discharged from the lower box 106 through the discharge pipe 107, and with the control valve 114 open, large particles of impurities trapped in the screen cylinder 108 can be transferred out of the screen cylinder 108.

[0032] The above are preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A screening device for processing foundry sand raw materials, comprising a screening box (101), wherein a support leg (102) is provided on the side end of the screening box (101), characterized in that: Multiple springs (103) are vertically arranged on the top and bottom walls of the screening box (101). The lower ends of the multiple springs (103) are connected to a mounting frame (104). A vibration motor (105) is installed on the mounting frame (104). A lower box body (106) with a conical lower end is installed at the bottom of the mounting frame (104) via a connecting rod (113). A discharge pipe (107) is installed at the bottom of the lower box body (106). A screen cylinder (108) with a conical lower end is installed in the mounting frame (104). A discharge pipe (109) with a misalignment from the discharge pipe (107) is installed at the bottom of the screen cylinder (108). A control valve (114) is installed on the discharge pipe (109). A discharge pipe (110) connected to the discharge pipe (109) is installed on the lower box body (106).

2. The screening device for casting sand raw material processing according to claim 1, characterized in that: The top and bottom walls of the screening box (101) are also provided with guide slots (111), and the mounting frame (104) is also provided with guide plates (112) that are plugged into the guide slots (111).

3. The screening device for foundry sand raw material processing according to claim 2, characterized in that: The screening box (101) is also equipped with a transparent observation window (201).

4. The screening apparatus for casting sand raw material processing according to claim 3, characterized in that: The screening box (101) is also provided with a feed hopper (202) corresponding to the filter cylinder (108).

5. The screening apparatus for foundry sand raw material processing according to claim 4, characterized in that: The bottom side of the support leg (102) is also provided with an extension plate (203), and the extension plate (203) is also provided with anchor bolts (204) for connecting to the ground.

6. The screening apparatus for foundry sand raw material processing according to claim 5, characterized in that: The supporting leg (102) is L-shaped.

7. The screening apparatus for foundry sand raw material processing according to claim 6, characterized in that: A reinforcing rod (205) is also provided between the vertical and horizontal parts of the support leg (102).

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