CN210845571U - Silver powder collecting and filtering device in silver powder production by spray pyrolysis method - Google Patents

Abstract

The utility model belongs to the technical field of silver powder collecting and processing device, in particular to a silver powder collecting and filtering device in silver powder production by spray pyrolysis method, which comprises a silver powder separation chamber, a suspension plate is arranged in the silver powder separation chamber, a plastic burning plate filter core is arranged below the suspension plate, the suspension plate is provided with a plurality of back-blowing air inlets, a plurality of ventilation pipes are correspondingly arranged below the back-blowing air inlets, the ventilation pipes are positioned inside, an air inlet pipeline is arranged below the silver powder separation chamber, the air inlet pipeline is positioned below the suspension plate, the air outlet pipeline is positioned above the suspension plate, and a silver powder collecting bag is arranged at the bottom of the silver powder separation chamber; the plastic-fired plate filter element of the device is of a rigid structure, cannot deform and has no framework abrasion, so that the service life is long, and the device has the characteristics of improving the production efficiency of enterprises and increasing the economic benefit of the enterprises.

Description

A kind of silver powder collecting and filtering device in the production of silver powder by spray pyrolysis

technical field

The utility model belongs to the technical field of silver powder collecting and processing devices, in particular to a silver powder collecting and filtering device in the production of silver powder by a spray pyrolysis method.

Background technique

In the past, the silver powder collection system in the production of silver powder by spray pyrolysis method mainly uses the device of high temperature ceramic filter to collect the silver powder. The high-temperature ceramic filter is composed of several ceramic filter tubes. The silver powder produced by the spray pyrolysis method has the characteristics of fine particles, high concentration and high humidity. Although the high-temperature ceramic filter has high efficiency, the spray pyrolysis The high-humidity silver powder produced by the high-humidity method causes adhesion on the surface of the high-temperature ceramic tube, which affects the filtering effect of the high-temperature ceramic tube; in addition, once the high-temperature ceramic filter tube is damaged, the concentration of the effluent silver powder will rise linearly, resulting in an excess of the standard. At the same time, due to the high economic value of silver powder, the economic benefits of enterprises have also dropped significantly.

Utility model content

The purpose of the utility model is to provide a silver powder collecting and filtering device in the production of silver powder by spray pyrolysis, so as to solve the problems of low filtration efficiency of the high temperature ceramic filter and the increase of the concentration of the externally discharged silver powder.

In order to meet the above-mentioned purpose, the technical scheme adopted by the present utility model is:

A silver powder collecting and filtering device in the production of silver powder by spray pyrolysis method, comprising a silver powder separation chamber, a silver powder collection bag is arranged at the lower end of the silver powder separation chamber, and an air inlet duct is arranged below the silver powder separation chamber, and the air inlet The pipe is used to pass in the gas with silver powder. The upper part of the silver powder separation chamber is provided with an air outlet pipe, and the silver powder separation chamber between the air inlet pipe and the air outlet pipe is provided with a hanging plate, and the lower part of the hanging plate is provided There is a plastic sintering plate filter element, the hanging plate is arranged on a number of blowback air inlets, and a ventilation pipe is correspondingly arranged under the several said blowback air inlets, and the ventilation pipe is located inside the plastic sintering plate filter element, and the gas with silver powder Enter the silver powder separation chamber through the air inlet duct, the plastic sintering plate filter element filters the silver powder and collects it into the silver powder collection bag, and the filtered gas is discharged through the air outlet duct.

Preferably, a reverse blowing air inlet dredging duct is provided above the silver powder separation chamber, the reverse blowing air inlet dredging duct is connected to a reverse blowing system, the reverse blowing air inlet dredging duct is located above the suspension plate, and the reverse blowing air inlet A plurality of round holes are arranged on the air dredging duct, and the round holes correspond to the ventilation openings on the suspension plate.

Preferably, a nitrogen gas protection system is connected below the silver powder separation chamber, and the nitrogen gas protection system is used to provide nitrogen gas for protection of the silver powder in the silver powder collection bag.

Preferably, the top of the silver powder separation chamber is provided with an upper cover of the separation chamber.

Preferably, the bottom of the silver powder separation chamber is funnel-shaped.

The beneficial effects of the present utility model are:

(1) The utility model provides a silver powder collecting and filtering device in the production of silver powder by spray pyrolysis method, which installs a plastic sintering plate filter element through a hanging plate with holes inside the silver powder separation chamber, and sets an air inlet and an air outlet, with The gas of the silver powder only needs to enter the interior of the silver powder separation chamber through the air inlet, and then the plastic sintering plate filter element can be used to discharge the gas from the air outlet. The loss is more stable, the cleaning effect is more efficient, and the installation and maintenance costs are lower. The production efficiency of the enterprise increases the economic benefit of the enterprise;

(2) The silver powder separation chamber of the utility model is also designed with a reverse blowing air inlet dredging duct, which blows the compressed gas back through the branch pipe under the hanging plate, and the compressed gas runs in the reverse direction, blowing the silver powder on the outer wall of the plastic burning plate filter element. , to facilitate the recovery of silver powder;

(3) A nitrogen protection system is also provided at the silver powder collection bag of the utility model, which is used to provide nitrogen gas for protection to the silver powder in the silver powder collection bag;

(4) The top of the silver powder separation chamber of the utility model is designed with an openable upper cover of the separation chamber, which is for the convenience of maintenance, and the upper bottom of the silver powder separation chamber is designed as a funnel shape to make it easier to collect the silver powder into the silver powder collection bag. .

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the picture: 1. Silver powder separation chamber, 2. Separation chamber cover, 3. Hanging plate, 4. Silver powder collection bag, 5. Back blowing system, 6. Air inlet duct, 7. Air outlet duct, 8. Back blowing in Air dredging pipe, 9. Plastic burning plate filter element, 10. Nitrogen protection system, 11. Ventilation pipe.

Detailed ways

Below in conjunction with accompanying drawing and working principle, the utility model is further described:

As shown in FIG. 1, a silver powder collecting and filtering device in the production of silver powder by spray pyrolysis method includes a silver powder separation chamber 1, a silver powder collection bag 4 is arranged at the lower end of the silver powder separation chamber 1, and an air inlet is arranged below the silver powder separation chamber 1 The duct 6, the air inlet duct 6 is used to pass in the gas with silver powder, the upper part of the silver powder separation chamber 1 is provided with the air outlet duct 7, and the silver powder separation chamber 1 between the air inlet duct 6 and the air outlet duct 7 is provided with a hanging plate inside 3. A plastic sintering plate filter element 9 is arranged below the suspension plate 3, a plurality of backflushing air inlets are arranged on the suspension plate 3, and a ventilation pipe 11 is correspondingly provided below the several backflushing air inlets, and the ventilation pipe 11 is located inside the plastic sintering plate filter element 9, The gas with silver powder enters the silver powder separation chamber 1 through the air inlet duct 6 , the plastic sintering plate filter element 9 filters the silver powder and collects the silver powder into the silver powder collection bag 4 , and the filtered gas is discharged through the air outlet duct 7 . The upper part of the silver powder separation chamber 1 is provided with a reverse blowing dredging duct 8, the reverse blowing dredging duct 8 is connected with the reverse blowing system 5, the reverse blowing dredging duct 8 is located above the suspension plate 3, and the reverse blowing dredging duct 8 is provided with a number of round holes, the circular holes Corresponding to the vent on the hanging plate 3, it blows the compressed gas back through the branch pipe under the hanging plate 3, and the compressed gas runs in the reverse direction, blowing off the silver powder on the outer wall of the plastic sintering plate filter element 9, which is convenient for silver powder recovery. A nitrogen gas protection system 10 is connected below the silver powder separation chamber 1 , and the nitrogen gas protection system 10 is used for providing nitrogen gas to the silver powder in the silver powder collection bag 4 for protection. The top of the silver powder separation chamber 1 is provided with a separation chamber cover 2, which is for easy maintenance, and the bottom of the silver powder separation chamber 1 is funnel-shaped, so that the silver powder can be more easily collected into the silver powder collection bag.

When in use, the gas containing silver powder enters from the air inlet duct 6 , the plastic sintering plate filter element 9 can block the silver powder on its outer wall, and the gas passes through the plastic sintering plate filter element 9 into the silver powder separation chamber 1 and is discharged from the air outlet duct 7 . After running for a period of time, the reverse blowing system 5 will blow compressed gas above the suspension plate 3 of the silver powder separation chamber 1 through the reverse blowing dredging pipe 8, and the compressed gas will be blown into the hanging plate 3 from the round hole of the reverse blowing air inlet and dredging pipe 8. In the ventilation opening, run in the reverse direction along the ventilation pipe 11 below the hanging plate 3, blow the silver powder on the outer wall of the plastic sintering plate filter element 9, enter the silver powder collection bag 4 at the lower part of the silver powder separation chamber 1, and then protect it with nitrogen. The nitrogen gas blown into the system 10 is protected by airtight packaging.

Claims (5)

1. A silver powder collecting and filtering device in the production of silver powder by spray pyrolysis, characterized in that: it comprises a silver powder separation chamber (1), and a silver powder collection bag (4) is provided at the lower end of the silver powder separation chamber (1), and the An air inlet duct (6) is arranged below the silver powder separation chamber (1), and the air inlet duct (6) is used for introducing the gas with silver powder, and the upper part of the silver powder separation chamber (1) is provided with an air outlet duct (6). 7), a suspension plate (3) is arranged inside the silver powder separation chamber (1) between the air inlet duct (6) and the air outlet duct (7), and a plastic sintering plate filter element is arranged below the suspension plate (3). (9), the suspension plate (3) is provided with a number of blowback air inlets, and a ventilation pipe (11) is correspondingly provided below the plurality of the blowback air inlets. 9) Inside, the gas with silver powder enters the silver powder separation chamber (1) through the air inlet duct (6), and the plastic sintering plate filter element (9) filters the silver powder and collects it into the silver powder collection bag (4). The gas is discharged through the air outlet duct (7). 2. The silver powder collecting and filtering device in the production of silver powder by a spray pyrolysis method according to claim 1, characterized in that: above the silver powder separation chamber (1), a reverse blowing air inlet and dredging conduit (8) is arranged, so that the The back blowing air inlet dredging conduit (8) is connected to the back blowing system (5), the back blowing air inlet dredging conduit (8) is located above the suspension plate (3), and the back blowing air inlet dredging conduit (8) is on the Several round holes are provided, and the round holes correspond to the ventilation openings on the suspension plate (3). 3. The silver powder collecting and filtering device in the production of silver powder by a spray pyrolysis method according to claim 1, characterized in that: a nitrogen protection system (10) is connected below the silver powder separation chamber (1), and the nitrogen gas The protection system (10) is used for protecting the silver powder in the silver powder collection bag (4) with nitrogen gas. 4. The silver powder collecting and filtering device in the production of silver powder by spray pyrolysis method according to claim 1, characterized in that: the top of the silver powder separation chamber (1) is provided with a separation chamber upper cover (2). 5 . The silver powder collecting and filtering device in the production of silver powder by spray pyrolysis according to claim 1 , wherein the bottom of the silver powder separation chamber ( 1 ) is funnel-shaped. 6 .

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