Screw shaft for wringing machine

Abstract

The utility model discloses a screw shaft for a wringing machine in the field of wringing equipment, which comprises a shaft core and a shaft sleeve, the shaft core adopts a hollow circular tube, connecting ends are arranged at two ends of the shaft core, the shaft sleeve comprises a small-diameter section, a variable-diameter section and a large-diameter section which are sequentially connected, the small-diameter section is sleeved on the front section of the shaft core, the variable-diameter section is sleeved on the middle section of the shaft core, and the large-diameter section is sleeved on the middle section of the shaft core. Axial reinforcing ribs matched with the variable-diameter section are annularly arranged on the middle section of the shaft core, the rear end of the shaft core is sleeved with the large-diameter section, radial reinforcing ribs matched with the large-diameter section are arranged at the rear end of the shaft core, and spiral blades are arranged on the outer wall of the shaft sleeve. The spiral shaft for the wringing machine is reasonable in structural design, light in self weight, convenient to produce and manufacture and low in maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of squeeze equipment, in particular to a spiral shaft for a squeeze machine. Background Art

[0002] The squeezer is a device used to reduce the water content in materials. After the solid-liquid mixed thin material containing a large amount of free water enters the screw squeezer through the feed hopper, the material is compressed in volume under the action of the screw shaft, so that the water in the material is separated through the external porous screen filter, and the water content of the solid gradually decreases under the action of continuous compression, and finally discharged out of the machine under the conveying action of the spiral.

[0003] The existing squeezer screw shaft is mostly solid. When the screw shaft is long, the shaft weight is too large, the manufacturing cost is high, and the energy consumption is high during the operation of the equipment. In addition, the propeller blades and the shaft body are mostly split structures and fixed by welding. During use, cracks are prone to occur at the welding position, which affects the service life of the screw shaft. Utility Model Content

[0004] The utility model aims to provide a spiral shaft for a squeezer to solve the problems existing in the prior art.

[0005] The purpose of the utility model is achieved as follows: a spiral shaft for a squeezer, including a shaft core and a shaft sleeve, the shaft core adopts a hollow round tube, and connecting ends are arranged at both ends of the shaft core, and the shaft sleeve includes a small diameter section, a diameter reducing section and a large diameter section connected in sequence, the small diameter section is sleeved on the front section of the shaft core, the diameter reducing section is sleeved on the middle section of the shaft core, the middle section of the shaft core is ringed with axial reinforcing ribs matching with the diameter reducing section, the large diameter section is sleeved on the rear end of the shaft core, the rear end of the shaft core is provided with radial reinforcing ribs matching with the large diameter section, and spiral blades are arranged on the outer wall of the shaft sleeve. The spiral shaft for a squeezer of the utility model has a reasonable structural design, light weight, convenient production and manufacturing, and low maintenance cost.

[0006] As a further improvement of the utility model, the end of the connecting end is inserted into the shaft core, and a connecting ring is fixed on the inner wall of the shaft core corresponding to the position of the end of the connecting end. The connecting end and the connecting ring are connected by threads, which is convenient for connection and avoids exposure of the connection position, thereby preventing the connection reliability from being affected by liquid corrosion of the material during the extrusion process.

[0007] As a further improvement of the utility model, a pressure plate is provided on the connecting end connected to the rear end of the shaft core, and the inner surface of the pressure plate is connected to the shaft core and the end face of the sleeve. The pressure plate and the radial reinforcement rib located at the end are detachably connected through a connecting piece, thereby reducing the influence of the conveying force during the operation of the spiral shaft on the connection reliability of the segmented welding position of the sleeve.

[0008] As a further improvement of the utility model, the shaft sleeve and the spiral blade are formed in one piece, thereby preventing the blade from cracking and falling off.

[0009] As a further improvement of the utility model, the diameter and spacing of the spiral blades gradually decrease from front to back, thereby improving the dehydration efficiency.

[0010] As a further improvement of the utility model, the shaft core, the axial reinforcing ribs and the radial reinforcing ribs are made of carbon structural steel, and the shaft sleeve and the connecting end are made of stainless steel, which saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the screw shaft for the squeezer of the utility model.

[0012] Among them, 1 is the shaft core, 2 is the small diameter section, 3 is the reducing section, 4 is the large diameter section, 5 is the axial reinforcement rib, 6 is the radial reinforcement rib, 7 is the connecting end, 8 is the connecting ring, and 9 is the pressure plate. DETAILED DESCRIPTION

[0013] like Figure 1 The spiral shaft for the squeezer shown includes a shaft core 1 and a shaft sleeve. The shaft core 1 is a hollow circular tube. The shaft sleeve includes a small diameter section 2, a diameter reducing section 3 and a large diameter section 4 connected in sequence. The small diameter section 2 is sleeved on the front section of the shaft core 1, the diameter reducing section 3 is sleeved on the middle section of the shaft core 1, the middle section of the shaft core 1 is provided with an axial reinforcing rib 5 that cooperates with the diameter reducing section 3, the large diameter section 4 is sleeved on the rear end of the shaft core 1, and the rear end of the shaft core 1 is provided with a radial reinforcing rib 6 that cooperates with the large diameter section 4. In this embodiment, the number of axial reinforcing ribs 5 is 6, which are evenly distributed on the shaft core 1 and fixed by welding. The number of radial reinforcing ribs 6 is 3, which are also welded and fixed on the shaft core 1. Among them, the shaft core 1, the axial reinforcing ribs 5, and the radial reinforcing ribs 6 are made of carbon structural steel to save costs, and the shaft sleeve and the connecting end 7 are made of stainless steel to ensure strength and reduce material corrosion, thereby increasing service life. The outer wall of the sleeve is provided with spiral blades (which belongs to the prior art, and the figure is omitted). The sleeve and the spiral blades are formed in one piece to avoid the blades from cracking and falling off after long-term use. The diameter and spacing of the spiral blades gradually decrease from front to back, which improves the squeezing efficiency.

[0014] The spiral shaft for the squeezer of this embodiment, the small diameter section 2, the diameter reducing section 3 and the large diameter section 4 of the sleeve can be formed in one piece, or can be manufactured in sections, and then installed on the shaft core 1 and spliced ​​by welding. The former has a longer service life, but requires higher manufacturing precision, and the latter is prone to cracking at the welding position after long-term use, affecting use, but is more convenient to manufacture and install. After the sleeve and spiral blades are worn out after long-term use, the sleeve can be removed by cutting equipment, and then a new sleeve can be installed without replacing the entire spiral shaft, reducing maintenance costs.

[0015] A pressure plate 9 is sleeved on the connecting end 7 connected to the rear end of the shaft core 1. The inner surface of the pressure plate 9 is connected to the shaft core 1 and the end surface of the sleeve. The pressure plate 9 is detachably connected to the radial reinforcement rib 6 at the end through a connector. When the sleeve is connected by segmented welding, the setting of the pressure plate 9 can effectively reduce the influence of the conveying force during the operation of the screw shaft on the connection reliability of the segmented welding position of the sleeve, thereby improving the service life of the sleeve. Even in the case of an integrally formed sleeve, the setting of the pressure plate 9 can also prevent the sleeve from being forced to move backward.

[0016] The shaft core 1 is provided with connecting ends 7 at both ends, and the ends of the connecting ends 7 are inserted into the shaft core 1. The inner wall of the shaft core 1 is fixed with a connecting ring 8 corresponding to the end of the connecting end 7. The connecting end 7 and the connecting ring 8 are connected by threads, which is convenient for connection and avoids the connection position being exposed, thereby preventing the connection reliability from being affected by the corrosion of the material liquid during the extrusion process. The setting of the connecting end 7 is convenient for installing the entire spiral shaft on the squeezer housing and connecting it to the drive device.

[0017] The spiral shaft for the squeezer of the present embodiment has a reasonable structural design, light weight, and is easy to manufacture.

[0018] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A screw shaft for a squeezer, characterized in that: It includes a shaft core and a shaft sleeve, the shaft core adopts a hollow circular tube, two ends of the shaft core are provided with connecting ends, the outer wall of the shaft sleeve is provided with spiral blades, the shaft sleeve includes a small diameter section, a reducing section and a large diameter section connected in sequence, the small diameter section is sleeved on the front section of the shaft core, the reducing section is sleeved on the middle section of the shaft core, the middle section of the shaft core is ringed with axial reinforcing ribs matching with the reducing section, the large diameter section is sleeved on the rear end of the shaft core, and the rear end of the shaft core is provided with radial reinforcing ribs matching with the large diameter section.

2. The screw shaft for a squeezer according to claim 1, characterized in that: The end of the connecting terminal is inserted into the shaft core, and a connecting ring is fixed on the inner wall of the shaft core at a position corresponding to the end of the connecting terminal. The connecting terminal is connected to the connecting ring through threads.

3. The screw shaft for a squeezer according to claim 2, characterized in that: A pressure plate is sleeved on the connecting end connected to the rear end of the shaft core, the inner surface of the pressure plate is connected to the shaft core and the end surface of the sleeve, and the pressure plate is detachably connected to the radial reinforcement rib located at the end through a connecting piece.

4. The screw shaft for a squeezer according to claim 1, characterized in that: The shaft sleeve and the spiral blade are formed in one piece.

5. The screw shaft for a squeezer according to any one of claims 1 to 4, characterized in that: The diameter and the spacing of the spiral blades gradually decrease from front to back.

6. The screw shaft for a squeezer according to any one of claims 1 to 4, characterized in that: The shaft core, axial reinforcing ribs and radial reinforcing ribs are made of carbon structural steel, and the shaft sleeve and connecting end are made of stainless steel.

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