Spring blind mounting structure for filter press oil cylinder and external lock pressure type filter press oil cylinder

Abstract

The utility model discloses a spring blind mounting structure and external locking pressure type filter press oil cylinder for filter press oil cylinder, including cylinder body, piston and piston rod, and the front end of piston rod is equipped with locking nut through trapezoidal thread, and the locking nut and cylinder body are equipped with guide sleeve, and locking nut is connected with the force handle, and the mechanical locking is formed through the control force handle rotation locking nut, the inside cavity of piston rod is equipped with spring blind mounting structure, including first spring seat, second spring seat and spring, and first spring seat is connected with piston rod through screw no. One, and second spring seat is connected with piston rod through screw no. Two, and spring is connected through first spring seat and second spring seat. Through above -mentioned mode, the utility model discloses through external locking nut and built -in spring reset structure, guarantees mechanical lock pressure simultaneously, reduces the risk of leakage accident caused by filter press oil cylinder failure, and the risk position can be visualized, improves hydraulic energy availability.

Claims

1. A spring-loaded blind-mounted structure for a filter press cylinder, characterized in that, include: The cylinder block, and the piston and hollow piston rod located within the cylinder block cavity. The piston rod has a second spring seat near the piston at its proximal end and a first spring seat at its distal end. The second spring seat is fixed to the inner wall of the cylinder and is detachably connected to the proximal end of the piston rod by a screw. The first spring seat abuts against the distal end of the piston rod and is locked to the distal end of the piston rod by a screw. A spring is provided between the first spring seat and the second spring seat.

2. The spring-mounted blind-mounted structure for a filter press cylinder according to claim 1, characterized in that, Both the second spring seat and the first spring seat have circumferentially formed spiral mounting grooves on their outer peripheral surfaces. The radius of the spiral mounting groove is adapted to the radius of the spring. The front and rear ends of the spring are respectively fitted into the spiral mounting grooves of the corresponding spring seats to form radial constraints.

3. The spring-mounted blind-mounted structure for a filter press cylinder according to claim 1, characterized in that, The second screw is a fully threaded screw. It is screwed into the threaded mounting hole at the rear end of the cylinder block, and the nut end of the screw is fixed. An oil-blocking plug is also provided at the end of the threaded mounting hole. The front end of the second screw is screwed into the first spring seat until it reaches a limit position, and a detachable temporary locking connection is formed between the second screw and the second spring seat.

4. The spring-mounted blind-mounted structure for a filter press cylinder according to claim 3, characterized in that, The screw is screwed into the threaded hole of the first spring seat along the front end of the cylinder to form a permanent axial locking connection between the first spring seat and the piston rod.

5. The spring blind-mounted structure for a filter press cylinder according to claim 4, characterized in that, The first spring seat and the piston rod are coaxially provided with corresponding pin holes. The anti-rotation pin passes through the pin holes of both the piston rod and the first spring seat to simultaneously constrain their circumferential degrees of freedom.

6. The spring-mounted blind-mounted structure for a filter press cylinder according to claim 3, characterized in that, The screw length of the second screw is L2, and the axial length between the radial outer end face of the first spring seat and the radial inner end face of the second spring seat is L1, satisfying L1=L2.

7. An externally mounted, pressure-locking filter press cylinder, characterized in that, It is equipped with a spring-loaded blind-mounted structure for a filter press cylinder as described in any one of claims 1-6. It also includes a locking nut and a guide sleeve. The locking nut is connected to the distal end of the piston rod via a trapezoidal thread. The guide sleeve is fitted around the outer circumference of the piston rod and is located between the locking nut and the cylinder body. A supporting copper sleeve is installed between the guide sleeve and the piston rod. The locking nut is connected to a force-applying handle. By controlling the force-applying handle to rotate the locking nut, the locking nut moves axially under the transmission of the trapezoidal thread, so that its end face contacts and presses against the end face of the guide sleeve, forming a mechanical lock.

8. The externally mounted, pressure-locking filter press cylinder according to claim 7, characterized in that, The piston divides the cylinder body into a rod chamber and a rodless chamber. The rodless chamber is connected to the atmosphere. The rear end of the cylinder body is provided with an oil inlet and an oil inlet plug. Oil flows into the rodless chamber through the oil inlet.

9. The externally locked filter press cylinder according to claim 7, characterized in that, The outer surface of the piston is provided with at least three grooves along the circumference, and each groove is provided with a guide ring, a rod sealing ring and a dustproof ring.

10. The externally mounted, pressure-locking filter press cylinder according to claim 7, characterized in that, It also includes a cap that is removably mounted on the distal end of the piston rod.

Images