CN215891092U

CN215891092U - Gravity balance horizontal type clamp type quick-opening blind plate

Info

Publication number: CN215891092U
Application number: CN202121900343.5U
Authority: CN
Inventors: 胡志洋; 李永春; 史金鹤; 李志新; 孙金明
Original assignee: Mudanjiang Jinhuan Petrochemical Equipment Co ltd
Current assignee: Mudanjiang Jinhuan Petrochemical Equipment Co ltd
Priority date: 2021-08-15
Filing date: 2021-08-15
Publication date: 2022-02-22
Anticipated expiration: 2031-08-15

Abstract

A gravity-balanced horizontal clamp type quick-opening blind plate comprises: the quick-opening blind plate greatly reduces the kinetic friction resistance between the low control lead screw and the control nut on one hand, reduces the labor intensity, improves the working efficiency and reduces the production waste on the other hand, balances the fit clearance between the annular clamp and the blind plate head cover and the blind plate cylinder seat on the other hand, eliminates the adverse effect on the sealing performance of the quick-opening blind plate caused by unbalanced clearance distribution of the upper lower part of the annular clamp due to the action of gravity, the potential safety hazard is eliminated, and the application safety and the sealing reliability are improved.

Description

Gravity balance horizontal type clamp type quick-opening blind plate

Technical Field

The utility model relates to a horizontal clamp type quick-opening blind plate, in particular to a gravity-balanced horizontal clamp type quick-opening blind plate.

Background

The quick-opening blind plate is a special mechanical device for quickly opening or closing an opening at the tail end of a pressure container or a high-pressure pipeline for production in the fields of petroleum, chemical industry, metallurgy and the like, has high requirements on the safety and reliability of sealing, and is mainly of a buckle type, a lock ring type and a hoop type. Wherein: the hoop type quick-opening blind plate is generally of a horizontal structure, the working principle of the hoop type quick-opening blind plate is that an upper lead screw matching structure is used for driving an annular hoop arranged between a blind plate head cover and a blind plate cylinder seat to be hooped or opened and closed, so that the blind plate head cover and the blind plate cylinder seat are locked or unlocked mutually, and the quick-opening blind plate is closed or opened; more importantly, the fit clearance of the bearing connection structure at the upper end of the annular hoop is accumulated and reacted at the lower part of the annular hoop under the action of the gravity of the annular hoop, so that the upper fit clearance between the annular hoop and the blind plate head cover and the blind plate cylinder seat is inevitably smaller than the design clearance, the lower part is larger than the designed clearance, so that the upper part of the annular hoop is firstly in dynamic contact with the workpiece in the tightening process of the annular hoop, the lower part of the annular hoop is lifted finally, the tightening state of the upper part of the annular hoop is unbalanced due to larger tightening force and insufficient tightening force of the lower part of the annular hoop after the quick-opening blind plate is closed finally, this problem has become a safety hazard in the application of quick-opening blind plates, often causing production leakage accidents, the potential safety hazard is particularly prominent on a large-caliber high-pressure horizontal clamp type quick-opening blind plate, and the problem of gravity influence of an annular clamp becomes a key problem to be solved urgently in the application of the clamp type quick-opening blind plate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gravity-balanced horizontal hoop type quick-opening blind plate, which improves the application safety and sealing reliability of the quick-opening blind plate.

A gravity-balanced horizontal clamp type quick-opening blind plate comprises: the blind plate cylinder seat is horizontally arranged, the clamp hanger is installed at the upper end of a port, a hanging spring slide rod and a control lead screw which are arranged in parallel are arranged on the clamp hanger, 2 control nuts with opposite screw threads are installed on the control lead screw, the control nuts are matched with the control lead screw structure and combined with the control lead screw to form a clamp opening and closing control mechanism, the control lead screw is rotated to drive 2 control nuts to move along the control lead screw in a synchronous opposite direction or in a reverse direction, the blind plate head cover is structurally matched with the port of the blind plate cylinder seat, one side end of the blind plate cylinder seat is hinged with the blind plate cylinder seat, so that the blind plate head cover can close or open the port of the blind plate cylinder seat through rotation along a connecting hinge shaft, the annular clamp is arranged between the blind plate cylinder seat and the blind plate head cover, utilize gravity balance assembly elastic balance hangs on the hanging spring slide bar, simultaneously, the opening both ends of annular clamp respectively with 2 the articulated connection of control screw utilizes control screw with the clamp control mechanism that opens and shuts that the control lead screw is constituteed is steerable the cramp and the opening and shutting of annular clamp.

Further, preferably, the gravity balance assembly includes: the upper connecting sleeve and the lower connecting rod are respectively and fixedly connected to the upper end and the lower end of the lifting spring, the upper connecting sleeve and the lifting spring sliding rod form a sleeving matching structure and are sleeved on the lifting spring sliding rod, the upper connecting sleeve can be kept to axially slide relative to the lifting spring sliding rod, the lower connecting rod is respectively and correspondingly connected to the two ends of an opening of the annular hoop, and the suspension balance of the annular hoop on the lifting spring sliding rod is kept.

Still further, in order to reduce the sliding resistance of the upper connecting sleeves with respect to the suspension spring slide bars, it is preferable that linear bearings be embedded in the matching shaft holes of the upper connecting sleeves and the suspension spring slide bars.

Furthermore, preferably, the hoop hanger is provided with 2 spring hanging slide rods, the 2 spring hanging slide rods are arranged in parallel, the arrangement positions of the spring hanging slide rods correspond to the front end face and the rear end face of the annular hoop respectively, each spring hanging slide rod is connected with 2 gravity balance assemblies, the 2 gravity balance assemblies are connected to the two ends of an opening of the front end face or the rear end face of the annular hoop respectively and correspondingly, and the annular hoop is enabled to be hung on the 2 spring hanging slide rods by utilizing 4 sets of the gravity balance assemblies in an elastic balance manner.

Furthermore, it is preferable that the suspension spring slide bar is connected with the hoop hanger in a lifting adjustment manner, and the fit clearance of the annular hoop upper end bearing connection structure is adjusted and controlled by adjusting the preset height of the suspension spring slide bar.

The utility model has the advantages that the gravity balance horizontal type hoop type quick-opening blind plate is provided, the gravity balance assembly is utilized to hang the annular hoop on the suspension spring slide rod in an elastic balance manner, the gravity borne by the control lead screw is reduced, the fit clearance of the upper end bearing connection structure of the annular hoop including the clearance between the control lead screw and the control nut is regulated and controlled, on one hand, the motion friction resistance between the control lead screw and the control nut is greatly reduced, the fit working state between the control lead screw and the control nut is improved, the labor intensity is reduced, the working efficiency is improved, the production waste is reduced, on the other hand, the fit clearance between the annular hoop and the blind plate head cover and the blind plate cylinder seat is balanced, the design clearance structure requirement is met, and the adverse influence on the sealing performance of the quick-opening blind plate caused by the unbalanced distribution of the upper and lower clearances between the annular hoop and the blind plate head cover and the blind plate cylinder seat due to the action of gravity is eliminated, the potential safety hazard is eliminated, and the application safety and the sealing reliability of the quick-opening blind plate are improved.

Drawings

Fig. 1 is a three-dimensional structure diagram of a gravity-balanced horizontal clamp-type quick-opening blind plate in embodiment 1.

Fig. 2 is a top view of the gravity balanced horizontal clip type quick-opening blind plate shown in fig. 1.

FIG. 3 is a diagram of an embodiment of a clamp weight balance assembly.

FIG. 4 is a diagram illustrating the structure of the lifting adjustment of the suspension spring sliding rod in the embodiment.

Detailed Description

The technical solution claimed by the present invention is further described below with reference to the specific embodiments and the accompanying drawings.

A high pressure large diameter gravity balanced clamp type quick opening blind at a design pressure of 7.0 mpa and nominal diameter DN1600 mm, as shown in fig. 1-4, comprising: the blind plate cylinder seat 1, the blind plate head cover 2, the annular hoop 3, the hoop hanging bracket and the gravity balance assembly 10.

The blind plate cylinder seat 1 is horizontally arranged, the upper end of a port is provided with the hoop hanging bracket consisting of a supporting plate 4 and side frame plates 5 which are respectively and vertically and fixedly connected with the two sides of the supporting

plate

4, 2 hanging

spring slide bars

6 and 1 control screw 7 are vertically arranged between the two side frame plates 5, the two ends of each hanging spring slide bar 6 are supported by adjusting screws 15 and are respectively embedded in strip-shaped slotted holes formed in the side frame plates 5 at the corresponding sides, the adjusting screws 15 can be rotated to lift or reduce the arrangement height of the hanging spring slide bars 6, the control screw 7 is provided with 2 control nuts 8 with opposite screw threads, the two ends of each control nut are respectively hinged with the side frame plates 5 at the corresponding sides, the blind plate head cover 2 is in structural fit with the port of the blind plate cylinder seat 1, one side of each control nut is hinged with the blind plate cylinder seat 1, the annular hoop 3 is arranged between the blind plate cylinder seat 1 and the blind plate head cover 2, two sides of the end head at two ends of the opening are respectively and symmetrically and fixedly provided with a connecting plate 9, the gravity balance assembly 10 is composed of an upper connecting sleeve 11, a connecting plug 16, a lifting spring 12 and a lower connecting rod 13, the upper connecting sleeve 11 is fixedly connected with the upper end of the lifting spring 12 by the connecting plug 16, the lower connecting rod 13 is fixedly connected with the lower end of the

lifting spring

12, 2 sets of the gravity balance assembly 10 are respectively arranged on each lifting spring slide bar 6, the upper connecting sleeves 11 are respectively sleeved on the lifting spring slide bars 6, linear bearings 14 are respectively embedded in matching shaft holes of the upper connecting sleeves 11 and the lifting spring slide bars 6, the lower connecting rods 13 are respectively and correspondingly connected on the connecting plates 9, the annular hoop 3 is hung on the lifting spring slide bars 6 in an elastic balance manner, and meanwhile, two ends of 2 control nuts 8 are respectively hinged with the connecting plates 9 at corresponding ends, the hoop opening and closing control mechanism consisting of the control screw 8 and the control lead screw 7 can control the hooping and opening and closing of the annular hoop 3.

By applying the high-pressure large-caliber gravity balance clamp type quick-opening blind plate, the annular clamp 3 is suspended on the suspension spring slide rod 6 by 4 sets of gravity balance assemblies 10, and the suspension spring slide rod 6 is adjusted to a proper height by rotating the adjusting screw 15, so that the control screw 8 does not bear the gravity action of the annular clamp 3, and the upper and lower gaps between the annular clamp 3 and the blind plate head cover 2 as well as between the annular clamp 3 and the blind plate barrel seat 1 are distributed in a balanced manner and are kept within a designed gap range; when the quick-opening blind plate is closed, the blind plate head cover 2 is turned over to be closed with the blind plate cylinder seat 1, then the control screw 7 is rotated to enable 2 control nuts 8 on the control screw 7 to move oppositely to pull the annular clamp 3 to be clamped in a closed manner, meanwhile, the gravity balance assembly 10 suspending the annular clamp 3 is respectively in the 2 suspension spring slide bars 6 to slide in an adaptive manner, because the control nuts 8 can not add any additional acting force to the control screw 7 except the self weight, the motion friction force between the control nuts 8 and the control screw 7 can be greatly reduced, the rotary operation of the control screw 7 can be very light, the labor intensity can be reduced, and the control nuts 8 can move more smoothly relative to the control screw 7, the clamping stagnation phenomenon can not occur, and the suspension bearing of the gravity balance assembly 10 is realized, changed annular clamp 3 with blind plate skull 2 with gap distribution's unbalanced state between the blind plate barrel holder 1 has been solved annular clamp 3 is right blind plate skull 2 with the unbalanced problem of the state of cramping of blind plate barrel holder 1 effectively improves the safety and the sealed reliability that the clamp type opened the blind plate soon and uses.

Claims

1. The utility model provides a gravity balance horizontal clamp type fast open blind plate which characterized in that includes: the device comprises a blind plate cylinder seat (1), a blind plate head cover (2), an annular clamp (3), a clamp hanger and a gravity balance assembly (10), wherein the blind plate cylinder seat (1) is horizontally arranged, the clamp hanger is installed at the upper end of a port, a suspension spring slide rod (6) and a control lead screw (7) which are arranged in parallel are arranged on the clamp hanger, 2 control nuts (8) with opposite screw threads are installed on the control lead screw (7), the control nuts (8) are structurally matched with the control lead screw (7) and combined with the control lead screw (7) to form a clamp opening and closing control mechanism, the blind plate head cover (2) is structurally matched with the port of the blind plate cylinder seat (1), one side end of the blind plate cylinder seat is hinged with the blind plate cylinder seat (1), the annular clamp (3) is arranged between the blind plate cylinder seat (1) and the blind plate head cover (2), and the gravity balance assembly (10) is elastically balanced and hung on the suspension spring slide rod (6), simultaneously, the opening both ends of annular clamp (3) respectively with 2 control screw (8) articulated connection.

2. A gravity balanced horizontal clamp type quick opening blind as claimed in claim 1, wherein said gravity balancing assembly (10) comprises: the lifting device comprises an upper connecting sleeve (11), a lifting spring (12) and a lower connecting rod (13), wherein the upper connecting sleeve (11) and the lower connecting rod (13) are respectively and fixedly connected to the upper end and the lower end of the lifting spring (12), the upper connecting sleeve (11) and the lifting spring sliding rod (6) form a sleeving matching structure and are sleeved on the lifting spring sliding rod (6), and the lower connecting rod (13) is respectively and correspondingly connected to the two ends of an opening of the annular clamp (3).

3. The gravity balanced horizontal clamp type quick opening blind plate as claimed in claim 2, wherein: linear bearings (14) are embedded in matching shaft holes of the upper connecting sleeves (11) and the suspension spring sliding rods (6).

4. A gravity balanced horizontal clamp type quick opening blind according to claim 2 or 3 wherein: the clamp hanger is provided with 2 hanging spring slide bars (6) and 2 hanging spring slide bars (6) which are arranged in parallel, the setting positions of the hanging spring slide bars are respectively corresponding to the front end face and the rear end face of the annular clamp (3), and each hanging spring slide bar (6) is connected with 2 sets of gravity balance assemblies (10) and 2 gravity balance assemblies (10) which are respectively and correspondingly connected to the two ends of an opening of the front end face or the rear end face of the annular clamp (3).

5. The gravity balanced horizontal clamp type quick opening blind plate as claimed in claim 4, wherein: the suspension spring sliding rod (6) is connected with the clamp hanger in a lifting adjustment mode.