Deslagging end structure and screw press

Abstract

The utility model relates to the field of solid-liquid separation equipment, and discloses a deslagging end structure and a screw press, which comprise a rear bearing seat combination and a deslagging flange, the deslagging flange is connected with a reverse pressing plate, the reverse pressing plate is connected with a material blocking outer cylinder, a top plate is arranged between the reverse pressing plate and the rear bearing seat combination, and the top plate is provided with a material blocking inner cylinder. The material blocking inner barrel can be inserted into the inner side of the material blocking outer barrel, and a back pressure spring located on the inner side of the material blocking inner barrel is arranged between the top plate and the back pressure plate. The utility model can solve the problems that the back pressure spring at the discharge end is exposed outside, the performance of the spring is influenced by the direct long-time contact of materials, and the service life of the spring is shortened.

Description

Technical Field

[0001] The utility model relates to the field of solid-liquid separation equipment, in particular to a slag discharge end structure and a screw press. Background Art

[0002] The screw press is a continuously operating horizontal single-shaft solid-liquid separation equipment that uses extrusion force to dehydrate materials.

[0003] The main working process of a screw press is as follows: the material enters the drum from the feed port and is pushed into the drum by the action of the screw. Due to the influence of the screw pitch and the design of the cone section, the volume of the material decreases. In addition, the reverse force applied by the back pressure device at the end of the equipment creates a huge squeezing effect on the material, causing the liquid phase to separate from the material and be discharged through the filter holes on the drum, while the solid phase is discharged from the slag discharge end.

[0004] In traditional screw presses, before the material reaches the discharge flange, it is squeezed against the filter screen. The material is then subjected to the spiral's circumferential tangential force, ultimately acting on the back-pressure plate. Finally, the material exits the machine through the discharge port. However, because the back-pressure spring at the discharge end is exposed, the material directly contacts the spring. Prolonged contact can affect spring performance and shorten its service life. Utility Model Content

[0005] The utility model aims to provide a slag discharge end structure to solve the problem that the back pressure spring at the discharge end is exposed to the outside, and the material directly contacts the spring for a long time, which affects the spring performance and shortens the service life of the spring.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a slag discharge end structure, including a rear bearing seat assembly and a slag discharge flange, a back pressure plate is connected to the slag discharge flange, a material blocking outer cylinder is connected to the back pressure plate, a top plate is provided between the back pressure plate and the rear bearing seat assembly, a material blocking inner cylinder is provided on the top plate, the material blocking inner cylinder can be inserted into the inner side of the material blocking outer cylinder, and a back pressure spring is provided between the top plate and the back pressure plate, located on the inner side of the material blocking inner cylinder.

[0007] Preferably, as an improvement, the material-blocking outer cylinder includes an outer cylinder tube and a flange ring, the flange ring is connected to the back pressure plate, and the inner wall of the outer cylinder tube is evenly distributed with multiple grooves along the circumference, and the grooves extend axially along the outer cylinder tube.

[0008] Preferably, as an improvement, the inner cylinder of the material stopper is integrally formed on the top plate, and a plurality of bosses are evenly distributed on the outer circumference of the inner cylinder of the material stopper. The bosses extend axially along the inner cylinder of the material stopper, and the bosses slide in the grooves.

[0009] Preferably, as an improvement, a plurality of limiting bolts are connected between the top plate and the rear bearing seat assembly, and the limiting bolts are connected to limiting nuts located on both sides of the top plate.

[0010] The principles and advantages of this solution are as follows: in actual application, the screw press pushes the material to the front of the slag discharge flange, and the material is pushed by the spiral and finally acts on the back pressure plate, and is buffered by the back pressure spring. Finally, the material passes through the slag discharge port and is discharged from the equipment. In the slag discharge port, a material blocking cylinder combination is formed by the material blocking outer cylinder and the material blocking inner cylinder, which separates the material from the back pressure spring, and forms a barrier on the outside of the back pressure spring to protect the back pressure spring. The material blocking inner cylinder and the material blocking outer cylinder are respectively connected to the top plate and the back pressure plate, and a sliding structure is formed between the two, which can maintain the protection of the back pressure spring as the position of the top plate is adjusted under different circumstances. The boss and the groove can provide guidance to ensure the stability of the sliding between the material blocking inner cylinder and the material blocking outer cylinder. In this way, this solution can prevent the material of the screw press from directly contacting the back pressure spring, avoid the impact of long-term contact of the material on the performance of the back pressure spring, and ensure that the back pressure spring has a long service life.

[0011] A screw press has the above-mentioned slag discharge end structure.

[0012] Such a back-pressure spring at the slag discharge end of the screw press does not come into contact with the material, the back-pressure spring has a longer service life, and the screw press can continue to work for a longer time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model.

[0014] Figure 2 This is a top view of the material-blocking outer cylinder in Example 1 of the present utility model.

[0015] Figure 3 This is a top view of the inner cylinder of the material retaining member in Example 1 of the present utility model.

[0016] Figure 4 This is a longitudinal sectional view of the combination of the material-blocking outer cylinder and the material-blocking inner cylinder in Example 1 of the present utility model. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The figure marks in the drawings of the specification include: rear bearing seat assembly 1, slag discharge flange 2, back pressure plate 3, top plate 4, limit bolt 5, limit nut 6, material stop outer cylinder 7, flange ring 71, outer cylinder tube 72, groove 73, material stop inner cylinder 8, and boss 81.

[0019] The embodiment is basically as shown in the attached Figure 1As shown: a slag discharge end structure, including a rear bearing seat assembly 1 and a slag discharge flange 2, the slag discharge flange 2 is bolted with a back pressure plate 3, the back pressure plate 3 is bolted with a material blocking outer cylinder 7, the material blocking outer cylinder 7 includes a flange ring 71, the flange ring 71 is bolted to the back pressure plate 3, and the flange ring 71 is integrally formed with an outer cylinder tube 72, as shown Figure 2 As shown, the inner wall of the outer tube 72 has four grooves 73 evenly distributed along the circumference, and the grooves 73 extend axially along the outer tube 72. A top plate 4 is provided between the back pressure plate 3 and the rear bearing seat assembly 1. Four limiting bolts 5 evenly distributed in an annular shape are passed through the rear bearing seat. The top plate 4 has through holes for the limiting bolts 5 to pass through. The limiting bolts 5 are connected to limiting nuts 6 located on both sides of the top plate 4. The position of the top plate 4 can be adjusted by the limiting nuts 6. Figure 4 As shown, the top plate 4 is integrally formed with a material blocking inner cylinder 8, which can be inserted into the inner side of the material blocking outer cylinder 7, as shown in FIG. Figure 3 As shown, four bosses 81 are evenly distributed on the outer circumference of the stopper inner cylinder 8. The bosses 81 extend axially along the stopper inner cylinder 8 and slide in the groove 73. A back pressure spring is provided between the top plate 4 and the back pressure plate 3 and is located inside the stopper inner cylinder 8.

[0020] Example 2, a screw press, adopts the slag discharge end structure of Example 1.

[0021] The specific implementation process is as follows: After being applied to the screw press, the material is separated into liquid phase at the filter screen under the push of the spiral, and the solid phase material enters the slag outlet through the rear bearing assembly. The axial force generated by the push of the spiral on the material finally acts on the rear bearing assembly and the top plate 4, pushing the top plate 4 toward the back pressure plate 3. The top plate 4 and the back pressure plate 3 are buffered by a back pressure spring. The back pressure plate 3 is supported by the slag outlet flange 2, thereby providing a reverse extrusion force to the material. The magnitude of the reverse extrusion force can be adjusted by adjusting the position of the top plate 4, further improving the liquid phase extrusion separation effect of the material. The back pressure spring in the slag outlet is protected by the material-blocking outer cylinder 7 and the material-blocking inner cylinder 8, and the material cannot directly contact the back pressure spring, thereby ensuring that the back pressure spring will not be affected by the material. The utility model adds a barrier between the slag outlet and the back pressure spring by adding a material-blocking cylinder combination structure, thereby preventing the material from affecting the back pressure spring and ensuring the service life of the back pressure spring.

[0022] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions and / or features of the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A slag discharge end structure, characterized by: It includes a rear bearing seat assembly and a slag discharge flange, the slag discharge flange is connected to a back pressure plate, the back pressure plate is connected to a material blocking outer cylinder, a top plate is provided between the back pressure plate and the rear bearing seat assembly, a material blocking inner cylinder is provided on the top plate, the material blocking inner cylinder can be inserted into the inner side of the material blocking outer cylinder, and a back pressure spring is provided between the top plate and the back pressure plate and located on the inner side of the material blocking inner cylinder.

2. A slag discharge end structure according to claim 1, characterized in that: The material-blocking outer cylinder comprises an outer cylinder tube and a flange ring, the flange ring is connected to the back pressure plate, and a plurality of grooves are evenly distributed along the circumference of the inner wall of the outer cylinder tube, and the grooves extend axially along the outer cylinder tube.

3. A slag discharge end structure according to claim 2, characterized in that: The material-stopping inner cylinder is integrally formed on the top plate. A plurality of bosses are evenly distributed on the outer circumference of the material-stopping inner cylinder. The bosses extend axially along the material-stopping inner cylinder and slide in the grooves.

4. A slag discharge end structure according to claim 3, characterized in that: A plurality of limiting bolts are connected between the top plate and the rear bearing seat assembly, and the limiting bolts are connected with limiting nuts located on both sides of the top plate.

5. A screw press, characterized in that: The invention has a slag discharge end structure as described in any one of claims 1 to 4.

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