CN107339131B

CN107339131B - Safety valve DPF purifier

Info

Publication number: CN107339131B
Application number: CN201710079270.XA
Authority: CN
Inventors: 蒋旭东; 莫志远; 丁光金
Original assignee: Hefei Baofa Power Technology Co ltd
Current assignee: Hefei Baofa Power Technology Co ltd
Priority date: 2017-02-14
Filing date: 2017-02-14
Publication date: 2023-10-13
Anticipated expiration: 2037-02-14
Also published as: CN107339131A

Abstract

The application discloses a safety valve DPF purifier which comprises a DPF carrier, wherein a hole for ventilation and pressure relief is formed in the center position of one end of the DPF carrier, a plugging device is arranged on the outer side of the DPF carrier, the plugging device comprises a bracket and a sealing device fixed in the middle of the bracket, the bracket is fixed on metal of the DPF carrier through a connecting piece, and the sealing device compresses the hole for ventilation and pressure relief. The application is equivalent to three-in-one with a black smoke alarm system, a pressure safety diffusing system and a purifier product, and the device developed by the application belongs to a built-in channel, is mechanical, has low price, has no additional ventilation pipeline or no additional ventilation pipeline in the diameter direction compared with the original product, and has attractive appearance.

Description

Safety valve DPF purifier

Technical Field

The application relates to a device, in particular to a safety valve DPF purifier.

Background

The equipment for treating the smoke intensity of the tail gas of the current diesel engine commonly adopts DPF technology, namely a diesel particle catcher (Diesel Particulate Filters). The passive regeneration DPF technology is widely applied to the field of diesel machinery, and has obvious advantages compared with the active regeneration DPF in price, and the maintenance is convenient. However, the passive regeneration DPF technology is applied to the field of non-road diesel machinery, particularly the fields of forklifts with low exhaust temperature, generator sets and the like, and the trapped carbon particulate matters PM cannot be burnt, so that the pressure of a DPF purifier product is continuously increased, the DPF is finally blocked and dead, and further irreversible damage and destruction of an engine are caused. In case of complete DPF blocking, the DPF is recovered after regeneration without an optimal technical solution, and the technical means such as electric furnace regeneration, microwave regeneration, ultrasonic regeneration, oil injection regeneration and the like commonly used at present have effects only on the premise of incomplete blocking.

Therefore, avoiding continuous pressure rise to prevent DPF product clogging is a fundamental requirement for solving the DPF dead failure.

However, in the market at present, a pressure diffusing system in the field of generator sets belongs to a side channel, and the pressure diffusing system is electronically controlled, high in price, complex in structure, huge in size and unattractive in appearance.

Disclosure of Invention

The application aims to provide a safety valve DPF purifier, which belongs to a built-in channel, is mechanical, is low in price, has no increase in diameter direction compared with the original product, and is attractive in appearance.

In order to solve the technical problems, the application adopts the following technical scheme:

the utility model provides a relief valve DPF clarifier, includes the DPF carrier, the central point of DPF carrier one end puts and opens the hole that is used for the ventilative pressure release of DPF carrier, the outside of DPF carrier is provided with plugging device, plugging device includes the support and fixes the sealing device at the support middle part, the support passes through the connecting piece to be fixed on the metal frame of DPF carrier, sealing device compresses tightly Kong Dongkou.

Preferably, the sealing device comprises a cushion block, a sealing plate, a connecting column and a compression spring, one end of the connecting column is vertically fixed on the sealing plate, the other end of the connecting column penetrates through a hole groove formed in the cushion block, the compression spring is sleeved on the connecting column of the cushion block and the sealing plate, and the sealing plate is tightly pressed Kong Dongkou.

Preferably, the center position of the support is provided with a threaded through hole, an adjusting bolt is assembled on the threaded through hole, and the adjusting bolt is rotated to press down the cushion block, so that the tightness of the compression spring is adjusted, and further the pressure of the sealing plate to the ventilation and pressure relief hole is adjusted, and the pressure is adjusted.

Preferably, a sealing gasket is arranged on the sealing plate and is tightly adhered to the hole opening for ventilation and pressure relief, so that the pressure relief hole does not leak unfiltered black smoke of the exhaust gas when the exhaust pressure can not reach the regulated pressure value.

The beneficial effects of the application are as follows:

the application is equivalent to three-in-one with a black smoke alarm system, a pressure safety diffusing system and a purifier product. The device of the application belongs to a built-in channel, is mechanical, has low price, has a volume which is compared with the prior product, does not increase or additionally adds a ventilation pipeline in the diameter direction, and has attractive appearance.

Drawings

The application will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic diagram of a safety valve DPF purifier of the present application.

Fig. 2 is a schematic diagram of a safety valve DPF purifier of the present application.

The device comprises a 1-DPF carrier, a 2-hole, a 3-bracket, a 4-cushion block, a 5-sealing plate, a 6-connecting column, a 7-compression spring, an 8-hole groove, a 9-connecting piece, a 10-threaded through hole and an 11-adjusting bolt.

Detailed Description

Embodiments of the application are described in detail below with reference to the attached drawings, but the application can be implemented in a number of different ways, which are defined and covered by the claims.

As shown in fig. 1, the application discloses a safety valve DPF purifier, which comprises a DPF carrier 1, wherein a hole 2 for ventilation and pressure relief of the DPF carrier is formed in the central position of one end of the DPF carrier 1, a plugging device is arranged on the outer side of the DPF carrier 1, the plugging device comprises a bracket 3 and a sealing device fixed in the middle of the bracket, the bracket 3 is fixed on a metal frame of the DPF carrier 1 through a connecting piece 9, and the sealing device compresses the hole 2.

Preferably, the sealing device comprises a cushion block 4, a sealing plate 5, a connecting column 6 and a compression spring 7, one end of the connecting column 6 is vertically fixed on the sealing plate 5, the other end of the connecting column passes through a hole groove 8 formed in the cushion block 4, the connecting column 6 of the cushion block 4 and the sealing plate 5 is sleeved with the compression spring 7, and the sealing plate 5 compresses the hole 2.

Preferably, a threaded through hole 10 is formed in the center of the bracket 3, an adjusting bolt 11 is assembled on the threaded through hole 10, and the adjusting bolt 11 is rotated to press down the cushion block, so that the tightness of the compression spring 7 is adjusted, and the pressure of the sealing plate 5 to the hole 2 is further adjusted; after the device is used for a long time, the elasticity of the compression spring 7 is different from that of the initial state, and the adjusting bolt 11 plays a role in adjusting.

Preferably, a sealing gasket is arranged on the sealing plate and is tightly attached to the opening 2 of the hole, so that the tightness is enhanced, air leakage is prevented, and the pressure release hole is prevented from leaking unfiltered black smoke of the exhaust gas when the exhaust pressure cannot reach the regulated pressure value.

Operation principle:

the soot is constantly collected in the smoke purifier at work, the accumulation of carbon particles in the DPF carrier is more and more, micropores (the micropores are positioned around the sealing device) on the DPF carrier are blocked, the exhaust back pressure is continuously increased, the gas exhaust pressure in the holes acts on the sealing device, the sealing plate of the sealing device is gradually increased by the gas pressure, after the pressure generated by the pressure exceeds the pressure of a preset compression spring, the compression spring is compressed afterwards, the sealing device is separated from the surface of the DPF carrier, the gas is discharged from a separation gap, the exhaust back pressure of an engine is instantaneously reduced, the engine is not completely blocked due to the large exhaust back pressure, and the damage of the engine is avoided. At the moment, the gas discharged from the holes is not filtered, the color of the gas is changed from white to black, an alarm effect is achieved, the DPF carrier is required to be taken down, and the carbon ash in the DPF carrier is cleaned by a manual method.

The design principle of the product is that a small section of through area is arranged at the center of one end of a DPF carrier of the purifier product, a mechanical safety valve sealing component which can be lifted is arranged on the surface of the DPF carrier, when the back pressure in the exhaust gas is low, the safety valve is closed, thus forming a high filtering effect, and the general filtering effect is higher than 90-95%; when the PM particle size of the accumulation exceeds the purifier design value (i.e., the carbon loading), the exhaust back pressure exceeds the predetermined pressure of the safety valve, the valve is forced to open, and the high-pressure soot gas is directly discharged out of the purifier, thereby avoiding damage to the purifier and the engine body. After seeing black smoke, a driver can choose to continue working, and the purifier is cleaned in a pumping time, so that the purifier and an engine cannot be damaged even if the purifier cannot be cleaned in time (the disadvantage which is not solved in the current similar market products). In addition, the black smoke driver can see that the black smoke driver is cleaned immediately so as to restore the filtering effect of the purifier.

The embodiments of the present application described above do not limit the scope of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of the present application as set forth in the appended claims.

Claims

1. The safety valve DPF purifier is characterized by comprising a DPF carrier, wherein a hole is formed in the center of one end of the DPF carrier, a plugging device is arranged on the outer side of the DPF carrier, the plugging device comprises a bracket and a sealing device fixed in the middle of the bracket, the bracket is fixed on a metal frame of the DPF carrier through a connecting piece, and the sealing device is tightly pressed Kong Dongkou;

the sealing device comprises a cushion block, a sealing plate, a connecting column and a compression spring, wherein one end of the connecting column is vertically fixed on the sealing plate, the other end of the connecting column penetrates through a hole groove formed in the cushion block, the compression spring is sleeved on the connecting column of the cushion block and the sealing plate, and the sealing plate is tightly pressed Kong Dongkou;

the center of the bracket is provided with a threaded through hole, an adjusting bolt is assembled on the threaded through hole, and the adjusting bolt is rotated to press down the cushion block, so that the tightness of the compression spring is adjusted, the pressure of the sealing plate on the hole opening is further adjusted, and the pressure is adjusted;

and a sealing gasket is arranged on the sealing plate and is tightly adhered to the hole opening for ventilation and pressure relief.