阅读说明：本技术 一种发电机用空气滤清器 (Air filter for generator ) 是由 孙龙 高阳 高盼 于 2021-08-18 设计创作，主要内容包括：一种发电机用空气滤清器,包括滤材、支撑骨架、上端盖、下端盖、小密封圈；滤材为椭圆形筒状滤芯,支撑骨架为椭圆形筒体,其上设有若干紧密排列的穿孔,支撑骨架设于滤材的周向内侧；上端盖为PU材料制成的水平板,上端盖设于滤材的上侧,上端盖中部设有第一通孔,上端盖的上侧靠近边缘处设有上凸密封圈；下端盖设于滤材的下侧,下端盖中部向上凹进呈一个椭圆台形状,下端盖中心处设有第二通孔,第二通孔周向设有小密封圈。本滤清器直接采用PU材料作为上端盖的主材,密封性更好,零件的生产流程大大缩减,效率更高,密封可靠性也更高,还一定程度上降低了产品成本。(An air filter for a generator comprises a filter material, a support framework, an upper end cover, a lower end cover and a small sealing ring; the filter material is an oval cylindrical filter element, the support framework is an oval cylinder body, a plurality of closely-arranged through holes are formed in the support framework, and the support framework is arranged on the circumferential inner side of the filter material; the upper end cover is a horizontal plate made of PU material, the upper end cover is arranged on the upper side of the filter material, the middle part of the upper end cover is provided with a first through hole, and the upper side of the upper end cover close to the edge is provided with an upper convex sealing ring; the lower end cover is arranged on the lower side of the filter material, the middle part of the lower end cover is upwards recessed to form an elliptical table shape, a second through hole is formed in the center of the lower end cover, and small sealing rings are circumferentially arranged on the second through hole. This filter directly adopts the PU material as the main material of upper end cover, and the leakproofness is better, and the production flow of part reduces greatly, and efficiency is higher, and sealing reliability is also higher, has still reduced product cost to a certain extent.)

1. An air cleaner for a generator, characterized in that: comprises a filter material, a supporting framework, an upper end cover, a lower end cover and a small sealing ring;

the filter material is an oval cylindrical filter element which is vertically arranged, the support framework is an oval cylinder which is vertically arranged, a plurality of closely-arranged through holes are formed in the support framework, the support framework is arranged on the circumferential inner side of the filter material, and the support framework is attached to the circumferential inner side of the filter material;

the upper end cover is an oval horizontal plate made of PU materials, the upper end cover is arranged on the upper side of the filter material and matched with the filter material, an oval first through hole penetrating through the upper end cover along the vertical direction is arranged in the middle area of the upper end cover, and an upper convex sealing ring arranged around the circumferential edge of the upper end cover is arranged on the upper side of the upper end cover close to the circumferential edge of the upper end cover;

the lower end cover is an oval horizontal plate made of galvanized steel sheets, the lower end cover is arranged on the lower side of the filter material and matched with the filter material, the middle of the lower end cover is upwards recessed to form an oval table shape, a second through hole penetrating through the lower end cover is formed in the center of the lower end cover, and small sealing rings are arranged on the periphery of the second through hole.

Technical Field

The invention relates to an air filter for a generator.

Background

The filter element of the air filter for the prior small generator is generally made of sponge materials by direct cutting or made of paper filter elements with metal end covers at two ends due to space limitation, the filter element of the sponge materials has different shapes, the filter precision of the filter element of the sponge materials is gradually replaced by the cylindrical filter element of the paper materials, the cylindrical paper filter element with the metal end cover structure is generally bonded with an annular rubber sealing ring on the upper end cover, the structure has the problems that the bonded sealing ring has poor matching performance and poor sealing performance, and the situation of falling off or aging aggravation of the sealing ring can occur under the special environments of high temperature, high humidity, low temperature, vibration, impact and the like,

disclosure of Invention

The invention aims to solve the technical problem of providing an air filter for a generator, which directly adopts PU material as the main material of an upper end cover, has better sealing performance, greatly reduces the production flow of parts, has higher efficiency and higher sealing reliability, and reduces the product cost to a certain extent.

In order to solve the technical problem, the invention provides an air filter for a generator, which comprises a filter material, a support framework, an upper end cover and a lower end cover;

the filter material is an oval cylindrical filter element which is vertically arranged, the support framework is an oval cylinder which is vertically arranged, a plurality of closely-arranged through holes are formed in the support framework, the support framework is arranged on the circumferential inner side of the filter material, and the support framework is attached to the circumferential inner side of the filter material;

the upper end cover is an oval horizontal plate made of PU materials, the upper end cover is arranged on the upper side of the filter material and matched with the filter material, an oval first through hole penetrating through the upper end cover along the vertical direction is arranged in the middle area of the upper end cover, and an upper convex sealing ring arranged around the circumferential edge of the upper end cover is arranged on the upper side of the upper end cover close to the circumferential edge of the upper end cover;

the lower end cover is an oval horizontal plate made of galvanized steel sheets, the lower end cover is arranged on the lower side of the filter material and matched with the filter material, the middle of the lower end cover is upwards recessed to form an oval table shape, a second through hole penetrating through the lower end cover is formed in the center of the lower end cover, and small sealing rings are arranged on the periphery of the second through hole.

For the sake of simplicity, the air filter for a generator according to the present invention is hereinafter simply referred to as the present filter.

The use method of the filter comprises the following steps: during installation, the rear cover of the generator air filter is opened, the upper end cover face of the filter is placed inwards, then the fixing bolt penetrates out of the second through hole in the center of the lower end cover, the rear cover is mounted, and the fastening nut is locked. When the filter is used, air is guided into the peripheral space of the filter from the air inlet of the air filter, then passes through the filter material along the radial direction and is blocked by the micropores of the filter material, larger dust particles are blocked outside, and clean air flows to the generator from the first through hole in the center of the filter material.

The filter has the advantages that:

1. the PU material is directly used as the main material of the upper end cover, so that the production flow of the product is greatly reduced, and the organization and production are more convenient; meanwhile, the working procedure of bonding the metal upper cover and the upper cover sealing ring by two parts is also omitted, and the preparation work of the adhesive is saved; and the quality defects of falling or aging of the sealing ring and the like under special environments such as high humidity, high temperature, low temperature, vibration, impact and the like are avoided.

2. The upper cover is made of PU material, and the problems of special mould manufacture, bonding and sealing are solved.

3. The process is simple, the appearance quality is good, the product cost is greatly reduced, and the product has better market competitiveness.

4. The small sealing ring is arranged in the second through hole, so that unpurified air can be prevented from directly entering the filter material from a gap between the fixing bolt and the second through hole.

Drawings

Fig. 1 is a plan view of the present filter.

Fig. 2 is a sectional view a-a of fig. 1.

Detailed Description

Referring to fig. 1 and 2, an air filter for a generator includes a filter material 1, a support frame 2, an upper end cover 3, and a lower end cover 4;

the filter material 1 is an oval cylindrical filter element which is vertically arranged, the supporting framework 2 is an oval cylindrical body which is vertically arranged, a plurality of closely-arranged through holes are formed in the supporting framework (the supporting framework 2 is formed by punching and welding galvanized steel plates), the supporting framework 2 is arranged on the circumferential inner side of the filter material 1, and the supporting framework 2 is attached to the circumferential inner side of the filter material 1;

the upper end cover 3 is an oval horizontal plate made of PU material, the upper end cover 3 is arranged on the upper side of the filter material 1 and is matched with the filter material 1 (bonded by adopting polyurethane material), an oval first through hole 32 which vertically penetrates through the upper end cover 3 is arranged in the middle area of the upper end cover 3, an upper convex sealing ring 31 which is arranged around the circumferential edge of the upper end cover 3 is arranged on the upper side position of the upper end cover 3 close to the circumferential edge of the upper end cover, and the Shore hardness of the upper convex sealing ring 31 is 20-30;

the lower end cover 4 is an oval horizontal plate made of galvanized steel sheets, the lower end cover 4 is arranged on the lower side of the filter material 1 and matched with the filter material 1 (bonded by adopting a polyurethane material), the middle part of the lower end cover 4 is recessed upwards to form an oval table shape, a second through hole 41 penetrating through the lower end cover 4 is formed in the center of the lower end cover 4, and a small sealing ring 42 is arranged on the periphery of the second through hole 41.

The use method of the filter comprises the following steps: during installation, the rear cover of the generator air filter is opened, the upper end cover 3 of the filter is placed inwards, then the fixing bolt penetrates out of the second through hole 41 in the center of the lower end cover 4, the rear cover is installed again, and the fastening nut is locked. When the air filter is used, air is guided into the peripheral space of the air filter from the air inlet of the air filter, then passes through the filter material 1 along the radial direction and is blocked by the micropores of the filter material 1, larger dust particles are blocked outside, and clean air flows to a generator from the first through hole 32 in the center of the filter material 1.

The filter has the advantages that:

1. the PU material is directly used as the main material of the upper end cover 3, the production flow of the product is greatly reduced, and the organization and production are more convenient; meanwhile, the working procedure of bonding the metal upper cover and the upper cover sealing ring by two parts is also omitted, and the preparation work of the adhesive is saved; and the quality defects of falling or aging of the sealing ring and the like under special environments such as high humidity, high temperature, low temperature, vibration, impact and the like are avoided.

2. The upper cover is made of PU material, and the problems of special mould manufacture, bonding and sealing are solved.

3. The process is simple, the appearance quality is good, the product cost is greatly reduced, and the product has better market competitiveness.

4. The small sealing ring 42 arranged in the second through hole 41 can prevent unpurified air from directly entering the filter material 1 from a gap between the fixing bolt and the second through hole 41.