Anti-twisting structure of screw press
By adopting anti-torsion structure in the screw press, including backpressure plate, backpressure support and limit bolts, the bending and deformation of the screws of the backpressure plate of the traditional screw press is solved, and a stable and efficient material reverse extrusion effect is achieved.
Patent Information
- Application Number
- CN202323553828.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-25
AI Technical Summary
The backpressure plate fixing screws of traditional spiral presses are prone to bend, deform or breaking under the action of material torque, which affects the reverse extrusion effect of the backpressure plate on the material.
Adopt the anti-torsion structure including slag output flange, counterpressure plate, backpressure support and limit bolts. The counterpressure plate is supported by the counterpressure to press on the slag output flange, and the limit bolts are connected to the slag output flange, counterpressure plate and reverse pressure. Pressure support provides high torsional resistance and adjusts the force of the counterpressure plate through elastic parts and adjustment nuts.
Effectively disperse the torque of the backpressure plate, keep it stable during long-term use, ensure the stable reverse force on the material, and improve the material liquid separation effect.
Smart Images
Figure CN222136036U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of screw presses, in particular to an anti-twisting structure of a screw press. Background Art
[0002] The screw press is a continuously operating horizontal single-axis solid-liquid separation equipment that uses extrusion force to dehydrate materials.
[0003] The main working process of the screw press includes: 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 becomes smaller, and the reverse force given by the back pressure device at the end of the equipment. These factors bring a huge squeezing effect to the material, so that the liquid phase in the material is separated from the material and discharged through the filter holes on the drum.
[0004] Before the material is pushed to the slag discharge flange of the traditional screw press, the material is pressed against the filter screen by the extrusion force, and the material is subjected to the circumferential tangential force of the spiral, and finally acts on the back pressure plate of the back pressure device. However, due to the excessive torque of the material conveyed by the spiral extrusion on the back pressure plate, the back pressure plate, which should have been fixed, often has a relative rotation tendency. The back pressure plate is fixed to the slag discharge flange by screws. Under the action of long-term torque, the screws used to fix the back pressure plate are bent and deformed or even broken, and the reverse force provided by the back pressure plate is affected, the reverse extrusion effect of the material is deteriorated, and the extrusion separation of the liquid in the material is affected. Utility Model Content
[0005] The utility model aims to provide an anti-twisting structure for a screw press to solve the problem in the prior art that the fixing screws of the back pressure plate of the screw press are easily bent, deformed or even broken under the torsion of the material, thereby affecting the reverse extrusion effect of the back pressure plate on the material.
[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-twisting structure of a screw press, including a slag discharge flange, a back pressure plate, a back pressure support and a limiting bolt. The back pressure plate is pressed against the slag discharge flange by the back pressure support. The limiting bolts connect the slag discharge flange, the back pressure plate and the back pressure support into one. There are multiple limiting bolts, and the multiple limiting bolts are evenly distributed in a ring shape.
[0007] Preferably, as an improvement, the back-pressure support comprises a top plate fixed on the casing of the screw press, and an elastic member is provided in the middle of the top plate for pressing against the middle of the back-pressure plate.
[0008] Preferably, as an improvement, the back pressure plate, the slag discharge flange and the top plate are all provided with four threaded holes distributed in a circumference, and there are four limit bolts, which are connected in the threaded holes.
[0009] Preferably, as an improvement, an adjusting nut is connected to the limiting bolt on the side of the top plate facing away from the back pressure plate.
[0010] Preferably, as an improvement, a boss is provided in the middle of the back pressure plate, and the boss is inserted into the through hole in the middle of the slag discharge flange.
[0011] The principle and advantages of this scheme are: in actual application, the back pressure plate is supported by the top plate and the spring, the material conveyed by the spiral is squeezed and contacted with the back pressure plate, the circumferential torsion of the material acts on the back pressure plate, and the back pressure plate is connected with the slag discharge flange and the top plate under the action of the limit bolts, and has high torsion resistance. The torsion of the back pressure plate is dispersed to the top plate and the slag discharge flange under the action of the limit bolts, so that the back pressure plate can remain stable under the action of the torsion, thereby ensuring that a stable and reliable reverse force can be provided to the material. The distance between the top plate and the back pressure plate can also be adjusted by the limit bolts and the adjusting nuts, thereby adjusting the reverse force of the back pressure plate on the material. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION
[0013] The following is further described in detail through specific implementation methods:
[0014] The reference numerals in the drawings of the specification include: slag discharge flange 1, back pressure plate 2, top plate 3, spring 4, adjusting nut 5, and limit bolt 6.
[0015] The embodiment is basically as shown in the attached Figure 1 As shown: an anti-twist structure of a screw press, including a slag discharge flange 1, a back pressure plate 2, a top plate 3, a spring 4 and a limit bolt 6. A boss is provided in the middle of the back pressure plate 2, and the boss is inserted into the through hole in the middle of the slag discharge flange 1. The top plate 3 is located on the side of the back pressure plate 2 away from the slag discharge flange 1. The spring 4 is located between the middle of the top plate 3 and the middle of the back pressure plate 2. There are four threaded holes distributed in a circle on the back pressure plate 2, the slag discharge flange 1 and the top plate 3. The limit bolt 6 is connected in the threaded hole to connect the slag discharge flange 1, the back pressure plate 2 and the top plate 3 as a whole. The spring 4 is in a compressed state under the action of the limit bolt 6. An adjusting nut 5 is connected to the limit bolt 6 on the side of the top plate 3 away from the back pressure plate 2.
[0016] The specific implementation process is as follows: during the conveying process of the material in the screw press, the material is pressed against the back pressure plate 2. The back pressure plate 2 provides a reverse force to the material under the support of the top plate 3 and the spring 4, so that the material in the screw conveying process is effectively squeezed. The limit bolt 6 connects the slag discharge flange 1, the back pressure plate 2 and the top plate 3 as a whole, so that the torsional performance of the back pressure plate 2 is greatly improved. The torsional force of the material acting on the back pressure plate 2, the slag discharge flange 1, and the top plate 3 is dispersed and offset as a whole, and then the back pressure plate 2 can provide a reverse extrusion force to the material for a long time, stably and reliably, ensuring that the liquid in the material can be squeezed out. By operating the adjustment nut 5 on the limit bolt 6, the relative position of the top plate 3 and the limit bolt 6 can be adjusted, so that the support force of the spring 4 on the back pressure plate 2 can be adjusted, and then the reverse force of the back pressure plate 2 on the material can be adjusted.
[0017] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by 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. An anti-twist structure for a screw press, characterized in that: It includes a slag discharge flange, a back pressure plate, a back pressure support and a limiting bolt. The back pressure plate is pressed against the slag discharge flange by the back pressure support. The limiting bolts connect the slag discharge flange, the back pressure plate and the back pressure support as a whole. There are multiple limiting bolts, and the multiple limiting bolts are evenly distributed in a ring shape.
2. The anti-twisting structure of a screw press according to claim 1, characterized in that: The counter-pressure support comprises a top plate fixed on the casing of the screw press, and an elastic member is arranged in the middle of the top plate for pressing against the middle of the counter-pressure plate.
3. The anti-twisting structure of a screw press according to claim 2, characterized in that: The back pressure plate, the slag discharge flange and the top plate are all provided with four threaded holes distributed in a circumference, and there are four limit bolts, which are connected in the threaded holes.
4. The anti-twisting structure of a screw press according to claim 3, characterized in that: An adjusting nut is connected to the limiting bolt on the side of the top plate away from the back pressure plate.
5. The anti-twisting structure of a screw press according to claim 4, characterized in that: A boss is provided in the middle of the back pressure plate, and the boss is inserted into the through hole in the middle of the slag discharge flange.