Humidifying spiral stirrer for machine-made sand

Abstract

The utility model discloses a machine-made sand humidifying spiral stirrer which comprises a machine shell, a stirring shaft is arranged in the machine shell, the stirring shaft is formed by connecting a stirring main shaft and a stirring tail shaft through a coupler, a spiral blade is arranged on the stirring main shaft, and the right end of the stirring main shaft penetrates out of a right end plate of the machine shell and is connected with a stirring motor through a main shaft bearing seat. The left end of the stirring tail shaft penetrates through a left end plate of the machine shell to be connected with a tail shaft bearing seat, a first sealing piece and a second sealing piece are arranged on the stirring tail shaft, the first sealing piece is located between the left end plate of the machine shell and the coupler, the second sealing piece is located between the left end plate of the machine shell and the tail shaft bearing seat, and the first sealing piece is fixedly arranged on the stirring tail shaft in a sleeving mode and synchronously rotates along with the stirring shaft. Sand ash is prevented from being accumulated at the shaft tail part; the second sealing piece is fixed to the outer side face of the left end plate of the machine shell and used for preventing sand cement in the machine shell from leaking out of a gap between the stirring tail shaft and the left end plate of the machine shell. Abrasion of sand cement to the stirring tail shaft and the tail shaft bearing can be reduced, and the service life of the stirring shaft is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of machine-made sand processing, in particular to a machine-made sand humidifying spiral mixer. Background Art

[0002] The humidifying mixer is an important equipment for machine-made sand processing. Its function is to stir and humidify the finished particles in the process so that the output machine-made sand particles are evenly distributed, which can effectively prevent the overflow of dust during sand transportation.

[0003] There are design defects in the structure of the existing humidifying mixer, which leads to frequent wear of the shaft tail bearing during operation. The main reasons are analyzed as follows: 1. The sand and dust accumulated around the shaft tail bearing seat cannot fall freely, and it is easy to enter the bearing through the gap in the bearing cover, causing wear to the shaft tail bearing; 2. During the mixing process of the humidifying mixer, the high-speed rotating blades will throw the sand and dust to the shaft tail, and accumulate there for a long time, causing the sand and dust to wear the shaft; 3. The sand and dust accumulated at the shaft tail can easily enter the gap between the casing and the shaft to wear the main shaft, and will overflow from the gap and accumulate around the shaft tail bearing seat. Summary of the invention

[0004] In order to solve the above technical problems, the utility model provides a machine-made sand humidifying spiral mixer.

[0005] The technical solution adopted by the utility model is:

[0006] A machine-made sand humidifying spiral mixer comprises a casing, in which a stirring shaft is arranged, the stirring shaft is formed by a stirring main shaft and a stirring tail shaft connected by a coupling, a spiral blade is arranged on the stirring main shaft, and the right end of the stirring main shaft passes through the right end plate of the casing and is connected to a stirring motor via a main shaft bearing seat, the left end of the stirring tail shaft passes through the left end plate of the casing and is connected to a tail shaft bearing seat, a first seal and a second seal are arranged on the stirring tail shaft, the first seal is located between the left end plate of the casing and the coupling, the second seal is located between the left end plate of the casing and the tail shaft bearing seat, the first seal is fixedly mounted on the stirring tail shaft and rotates synchronously with the stirring shaft, and is used to prevent sand and ash from accumulating at the tail of the shaft; the second seal is fixed to the outer side surface of the left end plate of the casing, and is used to prevent sand and ash in the casing from leaking out from the gap between the stirring tail shaft and the left end plate of the casing.

[0007] Furthermore, the first seal includes a U-shaped hoop and a wool felt lined in the U-shaped hoop. The U-shaped hoop is fastened to the stirring tail shaft by bolts. The wool felt fits on the surface of the stirring tail shaft, and its left end face extends out of the U-shaped hoop and is frictionally and rotationally connected to the left end plate of the casing.

[0008] Furthermore, the U-shaped clamp has a thickness of 15-20 mm, a width of 50-80 mm, and a thickness of 0.5-1.0 mm of the wool felt.

[0009] Furthermore, the second sealing member is a rubber ring, which is pressed against the outer side of the left end plate of the casing by fastening bolts on the bearing cover passing through the tail shaft bearing seat, and the inner surface of the rubber ring is frictionally connected to the stirring tail shaft.

[0010] Furthermore, a groove is provided on the outer side surface of the left end plate of the casing, and the rubber ring is pressed into the groove by means of fastening bolts.

[0011] Furthermore, the tail shaft bearing seat is installed on the left end plate of the casing through a tail shaft bearing seat bracket, and a dust collection hole is provided at the bottom of one side of the tail shaft bearing seat bracket close to the left end plate of the casing.

[0012] Beneficial effects of the utility model:

[0013] The stirring shaft is configured to be formed by connecting a stirring main shaft and a stirring tail shaft through a coupling, which is convenient for installation and can improve the fatigue resistance of the stirring shaft and increase the service life of the equipment.

[0014] The setting of the first seal can prevent sand and ash from being thrown to the tail of the shaft, causing the sand and ash to wear the tail shaft; the setting of the second seal can prevent sand and ash in the casing from leaking out from the gap between the stirring tail shaft and the left end plate of the casing.

[0015] Through the above measures, the wear of the tail shaft and the tail shaft bearing caused by ash and sand can be reduced, and its service life can be increased; the maintenance cycle of the equipment can be reduced and its startup efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a machine-made sand humidifying spiral mixer according to the present application.

[0017] Figure 2 for Figure 1 A partial enlarged view of .

[0018] Figure 3 for Figure 2 Left side view.

[0019] Figure 4 It is a schematic structural diagram of the first sealing member. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and a preferred implementation manner. Example

[0021] See also Figure 1The present embodiment provides a machine-made sand and spiral wet mixer, comprising a casing 10, a stirring shaft is arranged in the casing, the stirring shaft is formed by a stirring main shaft 12 and a stirring tail shaft 11 connected by a coupling 13, a spiral blade 14 is arranged on the stirring main shaft 12, the right end of the stirring main shaft 12 extends out of the casing right end plate 102 and is connected to a stirring motor 15 through a main shaft bearing seat 17, the left end of the stirring tail shaft 12 passes through the casing left end plate 101 and is connected to a tail shaft bearing seat 16, and a first sealing member is arranged on the stirring tail shaft 12. The first seal 20 and the second seal 30 are located between the left end plate 101 of the casing and the coupling 13, and the second seal 30 is located between the left end plate 101 of the casing and the tail shaft bearing seat 16. The first seal 20 is fixedly mounted on the stirring tail shaft 11 and rotates synchronously with the stirring shaft to prevent sand and ash from accumulating at the tail of the shaft; the second seal 30 is fixed on the outer side of the left end plate 101 of the casing to prevent sand and ash in the casing from leaking out of the gap between the stirring tail shaft and the left end plate of the casing.

[0022] In specific implementation, the housing 10 is a horizontal semicircular trough, and a spray water pipe is arranged in the trough along its length direction. The spray water pipe is a prior art and is not shown in the figure. The upper end of the trough is closed by an upper cover plate, and a feed port is opened on the left side of the upper cover plate, and a discharge port is opened on the right side of the bottom of the trough. The left end of the trough is closed by the left end plate 101 of the housing, and the right end of the trough is closed by the right end plate 102 of the housing. The tail shaft bearing seat 16 is fixed to the outer side of the left end plate 101 of the housing through the tail shaft bearing seat bracket 162, and the main shaft bearing seat 17 is fixed to the outer side of the right end plate 102 of the housing through the main shaft bearing seat bracket. The stirring shaft is rotatably arranged in the semicircular trough through the main shaft bearing seat 17 and the tail shaft bearing seat 16, and is driven to rotate by the stirring motor 15, and the sand and gravel entering from the feed port are stirred and transported to the discharge port for discharge. During the stirring and transporting process, the sand and gravel are wetted by the spray water.

[0023] See also Figure 2 and Figure 3 In this embodiment, the first seal 20 includes a U-shaped hoop 21 and a wool felt 22 lined in the U-shaped hoop. The U-shaped hoop is fastened to the stirring tail shaft 11 by bolts 23. The wool felt 22 is attached to the surface of the stirring tail shaft, and its left end surface extends out of the U-shaped hoop 21 and is frictionally rotated to be connected with the left end plate 101 of the casing. Preferably, the thickness of the U-shaped hoop 21 is 15-20 mm, the width is 50-80 mm, and the thickness of the wool felt 22 is 0.5-1.0 mm. The first seal 20 rotates synchronously with the stirring tail shaft. During the rotation, the sand and gravel accumulated on the tail shaft are continuously lifted up and enter the conveying screw again; the wool felt 22 continuously removes dust from the surface of the left end plate 101 of the casing to prevent it from entering the gap between the tail shaft and the left end plate of the casing.

[0024] See also Figure 2In this embodiment, the second sealing member 30 is a rubber ring, which is pressed against the outer side of the left end plate 101 of the casing by the fastening bolts on the bearing cover 161 passing through the tail shaft bearing seat 16, and the inner surface of the rubber ring is frictionally connected with the stirring tail shaft. In specific implementation, a groove is provided on the outer side of the left end plate 101 of the casing, and the rubber ring is pressed into the groove by the fastening bolts. The rubber ring is pressed against the outer side of the left end plate 101 of the casing by the fastening bolts on the bearing cover 161 passing through the tail shaft bearing seat 16, which can avoid damaging the structure of the left end plate 101 of the casing, reduce the risk of material leakage, and facilitate replacement.

[0025] See also Figure 2 In this embodiment, a dust drop hole 40 is provided at the bottom of the tail shaft bearing seat bracket 162 near the left end plate 101 of the casing. The provision of the dust drop hole 40 allows sand and dust accumulated around the tail shaft bearing seat to fall from the dust drop hole, thereby preventing the sand and dust from entering the bearing from the gap of the bearing cover and causing wear to the tail shaft bearing.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications are also within the protection scope of the present invention.

Claims

1. A machine-made sand humidifying spiral mixer, characterized in that: The invention comprises a casing, wherein a stirring shaft is arranged in the casing, wherein the stirring shaft is formed by connecting a stirring main shaft and a stirring tail shaft through a coupling, a spiral blade is arranged on the stirring main shaft, and the right end of the stirring main shaft passes through the right end plate of the casing and is connected to the stirring motor through a main shaft bearing seat, and the left end of the stirring tail shaft passes through the left end plate of the casing and is connected to the tail shaft bearing seat, and a first seal and a second seal are arranged on the stirring tail shaft, the first seal is located between the left end plate of the casing and the coupling, and the second seal is located between the left end plate of the casing and the tail shaft bearing seat, the first seal is fixedly sleeved on the stirring tail shaft and rotates synchronously with the stirring shaft, and is used for preventing sand and ash from accumulating at the tail of the shaft; the second seal is fixed on the outer side surface of the left end plate of the casing, and is used for preventing sand and ash in the casing from leaking out from the gap between the stirring tail shaft and the left end plate of the casing.

2. The machine-made sand humidifying spiral mixer according to claim 1, characterized in that: The first sealing member includes a U-shaped hoop and a wool felt lined in the U-shaped hoop. The U-shaped hoop is fastened to the stirring tail shaft by bolts. The wool felt is attached to the surface of the stirring tail shaft, and its left end surface extends out of the U-shaped hoop and is frictionally and rotatably connected to the left end plate of the casing.

3. The machine-made sand humidifying spiral mixer according to claim 2, characterized in that: The thickness of the U-shaped hoop is 15-20 mm, the width is 50-80 mm, and the thickness of the wool felt is 0.5-1.0 mm.

4. The machine-made sand humidifying spiral mixer according to claim 1, characterized in that: The second sealing member is a rubber ring, which is pressed against the outer side of the left end plate of the casing through the fastening bolts on the bearing cover passing through the tail shaft bearing seat, and the inner surface of the rubber ring is frictionally connected with the stirring tail shaft.

5. The machine-made sand humidifying spiral mixer according to claim 4, characterized in that: A groove is provided on the outer side surface of the left end plate of the casing, and the rubber ring is pressed into the groove by fastening bolts.

6. The machine-made sand humidifying spiral mixer according to claim 1, characterized in that: The tail shaft bearing seat is installed on the left end plate of the casing through a tail shaft bearing seat bracket, and a dust drop hole is provided at the bottom of one side of the tail shaft bearing seat bracket close to the left end plate of the casing.

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