CN216604193U

CN216604193U - Safety valve for membrane filter press

Info

Publication number: CN216604193U
Application number: CN202123370438.3U
Authority: CN
Inventors: 李永泽; 尚博; 张弛; 刘彦材; 张博恒
Original assignee: Shanxi Qingzhou Environmental Technology Co ltd
Current assignee: Shanxi Qingzhou Environmental Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-05-27
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a safety valve for a membrane filter press, which comprises a safety valve arranged on a membrane filter press body, wherein the safety valve comprises a valve body, a pressure regulating barrel and a mounting seat, the left side of the valve body is provided with an air inlet cavity, the right side of the valve body is provided with an air outlet cavity, the air inlet cavity is communicated with an air blowing pipe of the membrane filter press body through an air inlet pipe, the air inlet cavity is communicated and sealed with the air outlet cavity through a movable sealing rod, an air leakage regulator is arranged in the pressure regulating barrel, a vertical cavity is arranged in the mounting seat, a jacking sealing plate is movably arranged in the vertical cavity, the upper end of the jacking sealing plate is connected with the mounting seat through an auxiliary spring, the air inlet pipe is communicated with the side wall of the lower end of the vertical cavity through a guide pipe, the vertical cavity is communicated with the air leakage regulator through an exhaust pipe at the upper end of the jacking sealing plate, and a power mechanism for applying pressure to the air leakage regulator is arranged in the pressure regulating barrel. The utility model can effectively eliminate the influence of various adverse external factors on the product, has excellent explosion-proof function and can prevent pipeline accidents.

Description

Safety valve for membrane filter press

Technical Field

The utility model relates to the technical field of solid-liquid separation, in particular to a safety valve used for a membrane filter press.

Background

The diaphragm filter press has the advantages of high pressing pressure, good corrosion resistance, convenient maintenance, safety, reliability and the like, and is the first choice for customers in the industries of metallurgy, gas, paper making, coking, pharmacy, food, brewing, fine chemistry industry and the like. The membrane filter press has better effects in the aspects of unit area processing capacity, filter cake moisture reduction, adaptability to the property of processed materials and the like. The main difference between the diaphragm filter press and the common chamber filter press is that two elastic membranes (the composite rubber diaphragm is an integral diaphragm) are additionally arranged on two sides of the filter plate, and in the operation process, when feeding is finished, a high-pressure fluid medium can be injected into the diaphragm plate, and at the moment, the integral diaphragm can be swelled to press a filter cake, so that further dehydration of the filter cake is realized, and squeezing filtration is realized. The diaphragm filter press is applied to mud, sewage treatment, and filter cake moisture content has accomplished below 60% at minimum, compares traditional van-type filter press, and the filter cake contains solid rate and can improve more than 2 times the highest, and filter cake cost of transportation greatly reduced, filter cake can get into the direct combustion of power plant, really becomes the resource with mud, and sewage becomes the spring, has replaced van-type filter press completely. When exhausting, explosion can be generated if no person operates or the operation is not proper, thereby causing damage to the machine and even personal safety. If the safety valve is rusted, the safety valve cannot normally exhaust to cause safety accidents.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects and shortcomings of the prior art, the safety valve used for the membrane filter press is provided, can effectively eliminate the influence of various adverse external factors on products, has an excellent anti-explosion function, and can prevent pipeline accidents.

The safety valve used for the membrane filter press comprises a safety valve arranged on a membrane filter press body, wherein the safety valve comprises a valve body, a pressure regulating cylinder and a mounting seat, the left side of the valve body is provided with an air inlet cavity, the right side of the valve body is provided with an air outlet cavity, the air outlet cavity is communicated with the outside, the air inlet cavity is communicated with an air blowing pipe of the membrane filter press body through an air inlet pipe, the air inlet cavity and the air outlet cavity are communicated and sealed through a movable sealing rod, the pressure regulating cylinder is internally provided with an air release regulator which is used for controlling the movable sealing rod to move left and right, the mounting seat is internally provided with a vertical cavity, a top pressure sealing plate is movably arranged in the vertical cavity, the upper end of the top pressure sealing plate is connected with the mounting seat through an auxiliary spring, and the air inlet pipe is communicated with the side wall at the lower end of the vertical cavity through a guide pipe, the vertical cavity is communicated with the air leakage regulator through an exhaust pipe at the upper end of the jacking sealing plate, and a power mechanism used for applying pressure to the air leakage regulator is arranged in the pressure regulating cylinder.

As the further improvement of above-mentioned scheme, the regulator loses heart including left clamp plate, right clamp plate and the reset spring of setting on left clamp plate, right clamp plate, form left air chamber between the left end face of left side clamp plate and pressure regulating section of thick bamboo, form right air chamber between left air chamber, the right air chamber, right air chamber with the blast pipe intercommunication, the outside of left side clamp plate with the activity is sealed the pole and is connected, the outside and the main spring coupling of right side clamp plate, the other end and the fly leaf of main spring are connected, the fly leaf by power unit drive.

As a further improvement of the scheme, the power mechanism comprises a motor, a crank and a pressure rod, the crank is eccentrically arranged on an output shaft of the motor, the other end of the crank is connected with the pressure rod, and the pressure rod is movably inserted into a pressure rod guide seat.

As a further improvement of the above scheme, a heavy hammer is arranged outside the upper end of the mounting seat and connected with the auxiliary spring.

As a further improvement of the scheme, a hydraulic cylinder is arranged at the upper end of the mounting seat and is connected with the heavy hammer.

The utility model has the beneficial effects that:

compared with the prior art, the utility model provides the safety valve used for the membrane filter press,

(1) when the pressure is normal: under the action of pressure, the small hole connecting the air inlet cavity and the air exhaust cavity is blocked by the movable sealing rod, and the auxiliary spring is closed under the action of the pressure of the heavy hammer, so that sufficient working pressure is ensured, and the filter press can normally work;

(2) when the pressure is too high: the air inlet pipe is communicated with the side wall of the lower end of the vertical cavity through a guide pipe, the auxiliary spring is compressed and moves upwards under the action of high pressure, the exhaust pipe on the right side of the auxiliary spring is communicated with the guide pipe on the left side, so that the pressure in the right air chamber rises, the left pressing plate and the right pressing plate move to drive the main spring to compress and the movable sealing rod to move, a small hole formed by connecting the air inlet cavity and the exhaust cavity is opened, and redundant air is exhausted; after the air pressure returns to normal, the safety valve returns to the initial state under the action of the main spring;

(3) when the pressure is too high and the main spring is damaged or fails: the pressure sensor or the infrared sensor on the membrane filter press sends an alarm signal, the motor is communicated with a power supply, the motor starts to work, the circular motion of the motor is converted into the linear reciprocating motion of the pressure rod through the pressure rod guide seat, the motor and the crank, the main spring is continuously pushed to move leftwards, and the small hole formed by the connection of the air inlet cavity and the air exhaust cavity is opened, so that the air exhaust function is realized; after receiving the alarm signal, the worker should stop the operation of the membrane filter press on site in time and carry out maintenance, and can continue to carry out normal filter pressing operation after completing maintenance and replacement; the crank, the pressure rod and the motor are additionally arranged behind the main spring of the membrane filter press, when the track of the membrane filter press deforms or the safety valve fails, the motor is connected with a power supply, the safety valve is forcibly opened and an alarm is given, the safety of the machine is guaranteed, and workers are reminded to overhaul in time. The track deformation of the diaphragm filter press is detected through the infrared sensor, the air pressure of the air passage is detected through the pressure sensor, and the finished connection process of the motor and the power supply can be detected. The safety valve is used for high-pressure protection, so that the membrane filter press is prevented from generating danger due to overhigh air pressure in the secondary pressing process; the infrared detection technology and the pressure sensor technology are combined with the motor to ensure that the safety protection of the air pressure can be ensured under the condition that a main spring of the safety valve is aged or damaged.

The pulse type safety valve is additionally arranged behind the original gas circuit of the membrane filter press, high-pressure protection can be realized, machine damage caused by overhigh gas pressure is prevented, the safety valve is extremely high in use safety, and the effect of the safety valve can be guaranteed not to be influenced by other environmental factors. The influence of various adverse external factors on the product can be effectively eliminated, and the explosion-proof pipeline has an excellent explosion-proof function and can prevent pipeline accidents; the moving flow is large, but the load increase speed is low, the quality of the pipeline is not influenced, the adaptability to different installation environments is strong, and the reliability is high, so that the safety protection capability in the use process is improved;

the smaller the volume of the safety valve is, the more beneficial the safety valve is to be installed in different pipelines, the lighter the safety valve can reduce the weight of the safety valve, and the pressure can not be caused to the pipelines; the pulse type safety valve has simple structure and small volume and can be used for different pipelines; due to the advantages of the shape, the device can be arranged at different positions without much concerns;

the utility model can realize unmanned operation and ensure that the working environment is safer.

Drawings

The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings, in which:

FIG. 1 is a schematic view of the installation of the membrane filter press of the present invention;

fig. 2 is a schematic view of the internal structure of the present invention.

Detailed Description

As shown in fig. 1-2, the safety valve for a membrane filter press provided by the present invention comprises a safety valve 200 installed on a body of a membrane filter press 100, the safety valve 200 comprises a valve body 1, a pressure regulating cylinder 2 and a mounting seat 3, the left side of the valve body 1 is provided with an air inlet cavity 4, the right side is provided with an air outlet cavity 5, the air outlet cavity 5 is communicated with the outside, the air inlet cavity 4 is communicated with an air blow pipe 7 of the body of the membrane filter press 100 through an air inlet pipe 6, the air inlet cavity 4 is communicated and sealed with the air outlet cavity 5 through a movable seal rod 8, the pressure regulating cylinder 2 is internally provided with an air escape regulator 300, the air escape regulator 300 is used for controlling the movable seal rod 8 to move left and right, the mounting seat 3 is internally provided with a vertical cavity 9, a top pressure seal plate 10 is movably arranged in the vertical cavity 9, the upper end of the top pressure seal plate 10 is connected with the mounting seat 3 through an auxiliary spring 11, the air inlet pipe 6 is communicated with the lower end side wall of the vertical cavity 9 through a conduit 12, the vertical cavity 9 is communicated with the air release regulator 300 through an exhaust pipe 13 at the upper end of the jacking sealing plate 10, and a power mechanism 400 for applying pressure to the air release regulator 300 is arranged in the pressure regulating cylinder 2.

Further improve, the air release adjuster 300 comprises a left pressing plate 21, a right pressing plate 22 and a return spring arranged on the left pressing plate 21 and the right pressing plate 22, a left air chamber 23 is formed between the left pressing plate 21 and the left end face of the pressure regulating cylinder 2, a right air chamber 24 is formed between the left air chamber 23 and the right air chamber 24, the right air chamber 24 is communicated with the exhaust pipe 13, the outer side of the left pressing plate 21 is connected with the movable sealing rod 8, the outer side of the right pressing plate 22 is connected with the main spring 25, the other end of the main spring 25 is connected with the movable plate 26, and the movable plate 26 is driven by the power mechanism 400. The power mechanism 400 comprises a motor 41, a crank 42 and a pressing rod 43, the crank 42 is eccentrically arranged on an output shaft of the motor 41, the other end of the crank 42 is connected with the pressing rod 43, and the pressing rod 43 is movably inserted into a pressing rod guide seat 44.

In a further improvement, a weight 14 is arranged outside the upper end of the mounting seat 3, and the weight 14 is connected with the auxiliary spring 11. Through the arrangement of the weight 14, the auxiliary spring 11 is closed under the pressure of the weight 14, and sufficient working pressure is ensured, so that the filter press can work normally.

In a further improvement, a hydraulic cylinder 15 is arranged at the upper end of the mounting seat 3, and the hydraulic cylinder 15 is connected with a heavy hammer 14. The hydraulic cylinder 15 and the weight 14 are arranged to adjust the pressure applied to the secondary spring 11.

The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement without departing from the spirit and scope of the present invention should be covered within the technical solutions of the present invention.

Claims

1. A relief valve that diaphragm filter press used which characterized in that: the safety valve comprises a safety valve arranged on a membrane filter press body, wherein the safety valve comprises a valve body, a pressure regulating barrel and a mounting seat, the left side of the valve body is provided with an air inlet cavity, the right side of the valve body is provided with an air outlet cavity, the air outlet cavity is communicated with the outside, the air inlet cavity is communicated with an air blowing pipe of the membrane filter press body through an air inlet pipe, the air inlet cavity and the air outlet cavity are communicated and sealed through a movable sealing rod, an air leakage regulator is arranged in the pressure regulating barrel and used for controlling the movable sealing rod to move leftwards and rightwards, a vertical cavity is arranged in the mounting seat, a top pressure sealing plate is movably arranged in the vertical cavity, the upper end of the top pressure sealing plate is connected with the mounting seat through an auxiliary spring, the air inlet pipe is communicated with the lower end side wall of the vertical cavity through a guide pipe, and the upper end of the top pressure sealing plate is communicated with the air leakage regulator through an exhaust pipe, and a power mechanism for applying pressure to the air leakage regulator is arranged in the pressure regulating cylinder.

2. A safety valve for a membrane filter press according to claim 1, wherein: the regulator loses heart including left clamp plate, right clamp plate and the reset spring of setting on left clamp plate, right clamp plate, form left air chamber between the left end face of left side clamp plate and pressure regulating section of thick bamboo, form right air chamber between left air chamber, the right air chamber, right air chamber with the blast pipe intercommunication, the outside of left side clamp plate with the activity is sealed the pole and is connected, the outside and the main spring coupling of right side clamp plate, the other end and the fly leaf of main spring are connected, the fly leaf by power unit drive.

3. A safety valve for a membrane filter press according to claim 2, wherein: the power mechanism comprises a motor, a crank and a pressing rod, the crank is eccentrically arranged on an output shaft of the motor, the other end of the crank is connected with the pressing rod, and the pressing rod is movably inserted into a pressing rod guide seat.

4. A safety valve for a membrane filter press according to any one of claims 1 to 3, wherein: and a heavy hammer is arranged outside the upper end of the mounting seat and is connected with the auxiliary spring.

5. The safety valve for a membrane filter press according to claim 4, wherein: and a hydraulic cylinder is arranged at the upper end of the mounting seat and is connected with the heavy hammer.