CN216009555U

CN216009555U - Two-action self-compensating seal valve

Info

Publication number: CN216009555U
Application number: CN202120658920.8U
Authority: CN
Inventors: 郭俊海
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-03-11
Anticipated expiration: 2031-03-31

Abstract

The utility model discloses a two-action self-compensation sealing valve which comprises a valve sealing module and a valve control assembly, wherein the valve sealing module comprises a valve core and a valve seat; when the valve is opened, the valve core in a sealing state is separated from the tight state of the valve seat by the valve control assembly and then is separated from the position of the valve seat, so that the valve is opened. The two-action self-aligning structure eliminates the friction loss between the valve plate and the valve seat, improves the sealing reliability and prolongs the service life; the blockage of the through-flow section caused by only depending on a lifting working mode is eliminated, and the through-flow of the full pipeline section without blockage is realized; the pneumatic conveying device is particularly suitable for pneumatic conveying of fine ash with the working condition of low temperature of more than 200 meshes, can effectively improve the working efficiency and prevent fly ash from being blocked. The sealing valve is designed to meet the requirements of containers with different sizes and shapes, the maintenance and installation convenience is ensured, and the application range is wide.

Description

Two-action self-compensating seal valve

Technical Field

The utility model relates to a sealing valve, in particular to a two-action self-compensation sealing valve.

Background

The sealing valves are various, such as a feed valve, a discharge valve, a blanking valve and the like, and in practical industrial application, for example, the feed valve for the ash conveying and conveying bin pump is divided into 3 types according to the working structural form: 1. turning over the working mode such as dome valve, flap valve; 2. a grinding disc valve and a double gate valve in a swinging working mode; 3. top poppet, cone valves of the lift mode of operation. These types of valves exist.

The inventors have found that the main problems with these valves are: the valve pendulum shaft is unreasonable in design and is easy to be stuck in dry ash medium; the sealing surface of the valve is not contacted with ash, so that the sealing is not tight and the leakage is easy to occur; the poor sealing caused by insufficient compensation force such as a spring and the like; abnormal abrasion of the lifting valve core (plate) is generated right below the blanking. The valve sealing surface is difficult to wear and treat or high in cost, the maintenance workload is large, the system reliability is influenced, and the economical efficiency is poor. Meanwhile, the problems of high manufacturing cost, heavy valve body, difficult installation and maintenance, short service life (the operation time is not as long as that of propaganda of manufacturers) and the like exist.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide a two-action self-compensation sealing valve, which realizes a full-through-flow sealing valve with a frictionless sealing surface through two simple actions, prolongs the service life of the sealing valve by multiple times, can greatly reduce the replacement frequency of the sealing valve and improve the production efficiency, and has industrial application value.

In order to achieve the purpose, the technical means adopted by the utility model is as follows: a two-action self-compensation sealing valve comprises a valve sealing module and a valve control assembly, wherein the valve sealing module comprises a valve core and a valve seat, the valve seat is installed on a rack, the valve control assembly comprises a power part and a driving connecting part, the driving connecting part is connected with the valve core, the power part is a bidirectional industrial compressed air heavy cylinder, an electric motor or a hydraulic motor or a combination of a unidirectional cylinder, an electric motor and a hydraulic motor or two unidirectional cylinders, electric motors and hydraulic motors, during sealing, the power part drives the valve core to rotate or translate and center towards the valve seat through the driving connecting part, and the valve core compresses the valve seat to be connected; when the structure is opened, the power part drives the valve core to be separated from the valve seat through the driving connecting piece, and the valve core is opened in a rotating or translating mode.

The working principle is as follows: during sealing, the valve control assembly moves the valve core in an opening state to the valve seat in a centering manner, and after the valve core moves to the valve seat in the centering manner, the valve core is tightly attached to the valve seat, so that sealing is realized; when the valve is opened, the valve core in a sealing state is separated from the tight state of the valve seat by the valve control assembly and then is separated from the position of the valve seat, so that the valve is opened. The two actions are that when sealing is needed, the action I is that the valve core moves towards the valve seat in a centering way and moves in place; and secondly, the valve core is tightly attached to the valve seat to realize sealing. When the valve needs to be opened, the first action is that the valve core is separated from the tight state of the valve seat; and secondly, moving away from the valve seat until the valve is opened.

Further, when the structure is opened, the valve core is parallel to the plane where the valve seat is located, and a gap is formed between the upper end face of the plane where the valve core is located and the lower end face of the plane where the valve seat is located.

Furthermore, the valve sealing module adopts a self-aligning structure. The self-aligning structure is the prior art, and the valve core and the valve seat are automatically aligned under the action of the driving part, so that the combination area of the sealing surface is ensured, and the sealing is tighter. The sealing surface of the valve sealing module adopts toughened engineering ceramic materials, hard alloy component materials and wear-resistant rubber materials, and an anti-scouring structure is designed to meet the requirements of the shutoff sealing function of the medium pipelines. The valve core plate of the valve sealing module adopts anti-corrosion and wear-resistant toughened engineering ceramics, hard alloy materials or wear-resistant rubber materials, and the structural rigidity and the wear-resistant working condition are effectively guaranteed.

Furthermore, the valve control assembly comprises a rotary lifting cylinder arranged on the rack, a rotary arm connected with a connecting shaft of the rotary lifting cylinder, a valve core arranged on the rotary arm, a valve seat arranged on the rack and a connecting feed inlet of the valve seat. The structure is a rotary lifting structure, and performs rotation and compaction actions during sealing; when the valve is opened, the releasing and the separating and the rotating opening actions are executed. The connecting shaft of the valve control assembly is subjected to quenching and tempering and chromium plating treatment, the static seal is made of a self-lubricating material, and the sliding seat bearing is matched with the anti-abrasion static seal, so that leakage is effectively prevented.

The utility model has the beneficial effects that:

the two-action self-compensation sealing valve eliminates the friction loss between the valve plate of the swing arm valve and the valve seat, improves the sealing reliability and prolongs the service life; the blockage of the through-flow section caused by only depending on a lifting working mode is eliminated, the valve plate is prevented from being directly washed by materials, and the through-flow of the full pipeline section without blockage is realized; the pretightening force compensation sealing performance of the valve plate is improved; due to the self-aligning structure, the centering and fine adjustment of the valve core and the valve seat are more accurate, and the sealing performance is further improved; the sealing valve is particularly suitable for pneumatic conveying of fine ash with the working condition of low temperature of more than 200 meshes, can effectively improve the working efficiency and prevent fly ash from being blocked; the container inspection and installation device is suitable for the requirements of containers with different sizes and shapes, the convenience in inspection and installation is guaranteed, and the application range is wide.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

In the figure: 1. the rotary lifting cylinder 2, the valve core 3, the valve seat 4, the frame 5 and the feeding hole.

Detailed Description

Example 1

The positive pressure flyash concentrated phase pneumatic conveying system is developed by combining fluidization and gas-solid two-phase flow technology. The conveying air fully fluidizes the dry ash through the fluidizing disc, and the dry ash is conveyed in a continuous concentrated phase mode in a fluidizing and conveying mode through the sending bin pump. The whole system has the characteristics of low investment, simple and flexible arrangement, reliable operation, high automation degree, high ash-gas conveying ratio, low flow rate, low energy consumption, small maintenance workload, low annual operation cost and the like. The positive pressure fly ash dense phase pneumatic conveying system equipment comprises: the device comprises a hopper, a fluidizing device, a sending bin pump, a conveying double-sleeve, a shutoff valve, a bin top dust removal device, a bin bottom gasification device, a bin bottom discharge device, a power gas source, a program control device and the like, wherein a feeding valve of the sending bin pump is a key shutoff device for connecting the hopper and the sending bin pump in the positive-pressure fly ash concentrated-phase pneumatic conveying system. The problems of intelligent controllability, conveying quantity precision, pipeline plug-in and economical efficiency and the like of the positive pressure fly ash concentrated phase pneumatic conveying system are directly influenced by the sealing performance and the reliability of a feeding valve of a sending bin pump.

At present, send feed valve for storehouse pump to divide according to the operational structure form and have 3 kinds:

1. the through flow of the turnover working mode such as a dome valve and a flap valve has resistance, and an inflatable sealing ring and a sealing ball top are easy to damage and difficult to repair;

2. the grinding disc valve and the double-gate valve in the swing working mode are in full through flow, and the pre-compression valve plate is in friction wear;

3. the top lift valve and the cone valve in the lifting working mode have resistance to through flow.

These valves create the following problems: the valve pendulum shaft is unreasonable in design and is easy to be stuck in dry ash medium; the sealing surface of the valve is not contacted with ash, so that the sealing is not tight and the leakage is easy to occur; the valve sealing surface is difficult to wear and treat or high in cost, the maintenance workload is large, the system reliability is influenced, and the economical efficiency is poor. Meanwhile, the problems of high manufacturing cost, heavy valve body, difficult installation and maintenance, short service life (the operation time is not as long as that of propaganda of manufacturers) and the like exist.

As shown in fig. 1, in this embodiment, a two-action self-compensating sealing valve is applied to a sending bin pump in a positive pressure fly ash dense-phase pneumatic conveying system as a feeding valve. The valve control assembly is arranged on the frame 4, and a rotary lifting cylinder 1 is adopted to perform rotation and compaction actions during sealing; when the valve is opened, a driving shaft of a rotary lifting cylinder 1 (driven by an electric motor and a hydraulic motor) drives a valve core 2, the valve core is firstly vertically descended to be separated from a valve seat 3, and then the valve core 2 and a pipeline through-flow section of a feed port 5 do not have intersection by horizontal swing, so that full through-flow is realized, no friction exists on a sealing surface, and loosening, separation and rotary opening actions are executed.

When the valve is closed, the rotary lifting cylinder 1 drives the valve core 2 to rotate to the centering position of the valve seat 3, and then the valve core is lifted and pressed, so that sealing is realized, and the actions of rotation and pressing are executed.

The two-action self-aligning structure eliminates the friction loss between the valve plate and the valve seat, improves the sealing reliability and prolongs the service life; the blockage of the through-flow section and the serious scouring abrasion to the valve core (plate) caused by only depending on the lifting working mode are eliminated, and the through-flow of the full pipeline section without blockage is realized; the large swing resistance and large abrasion caused by a swing arm and spring pretightening force compensation mode and the poor sealing caused by insufficient spring pretightening force are eliminated; the pneumatic conveying device is particularly suitable for pneumatic conveying of fine ash with the working condition of low temperature of more than 200 meshes, can effectively improve the working efficiency and prevent fly ash from being blocked. The sealing valve is designed to meet the requirements of containers with different sizes and shapes, the maintenance and installation convenience is ensured, and the application range is wide.

Example 2

Compared with the embodiment 1, the valve control assembly realizes rotation centering, lifting and pressing through mechanical transmission, and ensures opening and closing torque. In the existing structure, a plurality of mechanical transmission structures and a plurality of driving modes are provided. If the valve core is pushed by a mechanical push rod, the valve core is pushed to the valve seat centering position, and then the valve core is lifted by the mechanical arm to be tightly pressed and sealed with the valve seat. The specific structure is not stated in the utility model, which belongs to the prior art, but the whole body still executes two actions, when sealing is needed, the action I is that the valve core moves to the valve seat in a centering way and moves to the position; and secondly, the valve core is tightly attached to the valve seat to realize sealing. When the valve needs to be opened, the first action is that the valve core is separated from the tight state of the valve seat; and secondly, moving away from the valve seat until the valve is opened.

As can be seen from the embodiments 1 and 2, the valve control assembly has many ways, and can realize two actions of rotation or translation centering and pressing through bidirectional industrial compressed air heavy cylinder driving, electric motor driving or hydraulic motor driving; or the transmission torque is driven by a one-way cylinder, an electric motor and a hydraulic motor, and two actions of rotation or translation centering and pressing are realized by mechanical transmission design; or the centering and the pressing actions of rotation or translation are realized by the drive of 2 one-way cylinders, an electric motor and a hydraulic motor; as long as the switching torque is ensured.

The two-action self-compensation sealing valve comprises a valve sealing module and a valve control assembly, wherein the valve sealing module comprises a valve core and a valve seat, the valve core in an opening state is centered and moved towards the valve seat by the valve control assembly during sealing, and the valve core is attached to the valve seat after being moved in place, so that sealing is realized; when the valve is opened, the valve core in a sealing state is separated from the tight state of the valve seat by the valve control assembly and then is separated from the position of the valve seat, so that the valve is opened.

The valve sealing module adopts a self-aligning design, and the valve core and the valve seat are automatically aligned under the action of the driving part, so that the combination area of the sealing surface is ensured, and the sealing is tighter.

For the working conditions of impact and scouring environments, the sealing surface of the valve sealing module can be made of toughened engineering ceramic materials, and an anti-scouring structure is designed to meet the requirements of the shutoff sealing function of the medium pipelines. As an optimal design for the valve core, the valve core plate of the valve sealing module adopts corrosion-resistant and wear-resistant hard alloy, so that the structural rigidity and the wear-resistant working condition are effectively ensured. As the optimal design of the valve control assembly, a transmission shaft of the valve control assembly is subjected to quenching, tempering and chromium plating, the static seal is made of a self-lubricating material, and the sliding seat bearing is matched with the anti-abrasion static seal, so that leakage is effectively prevented.

Compared with the prior art, the utility model has the following outstanding characteristics:

1. the structure is innovative, and the self-aligning structure eliminates the overturning working modes such as a dome valve and a flap valve; the friction loss between the valve plate and the valve seat caused by the grinding disc valve and the double-gate valve in the swing working mode improves the sealing reliability and prolongs the service life.

2. The working mode is innovative, the blockage of the through-flow section caused by a top lifting valve and a conical valve which only depend on the lifting working mode is eliminated by the rotary lifting working mode, and the non-blocking through-flow of the section of the full pipeline is realized; the pneumatic conveying device is particularly suitable for pneumatic conveying of fine ash with the working condition of low temperature of more than 200 meshes, can effectively improve the working efficiency, prevent flying ash from being blocked and reduce the heating energy consumption of the ash bucket in winter.

3. The installation mode is innovated, the overhaul and installation convenience can be guaranteed, the requirements of containers with different sizes and shapes can be met, and the application range of the product is widened.

The disclosed embodiment is only for explaining the technical solution of the present invention, and is not to be taken as limiting the content of the present invention, and the routine modification of the technical skill in the art based on the present invention still belongs to the protection scope of the present invention.

Claims

1. The utility model provides a two action self compensating seal valves, includes valve seal module, valve control subassembly, the valve seal module includes case and disk seat, the disk seat is installed in the frame, its characterized in that: the valve control assembly comprises a power part and a driving connecting part, the driving connecting part is connected with a valve core, the power part is a bidirectional industrial compressed air heavy cylinder, an electric motor and a hydraulic motor, or a unidirectional cylinder, an electric motor and a hydraulic motor, or a combination of two unidirectional cylinders, electric motors and hydraulic motors, when the structure is sealed, the power part drives the valve core to rotate or translate and center towards a valve seat through the driving connecting part, and the valve core compresses the valve seat to be connected; when the structure is opened, the power part drives the valve core to be separated from the valve seat through the driving connecting part, the valve core is opened in a rotating or translating mode, when the structure is opened, the valve core is parallel to the plane where the valve seat is located, a gap is formed between the upper end face of the plane where the valve core is located and the lower end face of the plane where the valve seat is located, and the valve sealing module adopts a self-aligning structure.

2. The two-acting self-compensating sealing valve of claim 1, wherein: the valve control assembly comprises a rotary lifting cylinder arranged on the rack, a rotary arm connected with a connecting shaft of the rotary lifting cylinder, a valve core arranged on the rotary arm, a valve seat arranged on the rack and a connecting feed inlet of the valve seat.