Convenient-to-replace air filter for oil injection screw compressor

Abstract

The utility model discloses a convenient-to-replace air filter for an oil injection screw compressor, which comprises a tank body, the top end of the tank body is provided with a flow direction mark, one side of the tank body is fixedly connected with an air suction pipe, the other side of the tank body is fixedly connected with an exhaust pipe, the top end in the tank body is provided with an air suction bin, and the top end of the air suction bin is provided with a filtering bin. The exhaust pipe penetrates through the air suction bin to be communicated with the inner side of the filtering bin, the inner side of the filtering bin is fixedly connected with an air suction branch pipe, the top end of the air suction branch pipe is communicated with the air suction bin, ventilation openings are formed in the outer sides of the exhaust pipe and the air suction branch pipe, and the inner side of the exhaust pipe is fixedly connected to a vortex plate; the filter cartridge is mounted on the inner side of the tank body and comprises a connecting ring, a filter screen and a bottom plate, the filter screen is fixedly connected to the bottom end of the connecting ring, and the bottom plate is fixedly connected to the bottom end of the filter screen. According to the technical scheme, the filter cartridge is convenient to disassemble and replace, and a gap between the filter cartridge and the filter mounting port can be effectively sealed after the filter cartridge is mounted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the air filter technical field of air compressor for tobacco production especially, be related to an air filter for oil injection screw rod compressor convenient to replace. BACKGROUND

[0002] The working process of the oil injection screw rod compressor mainly includes the air suction process, the closed and conveying process, the compression and oil injection process and the air exhaust process. The air filter is needed to filter the inhaled air during the air suction process. However, the existing air filter for the oil injection screw rod compressor has the following shortcomings: most of the existing air filters for the oil injection screw rod compressor are fixed and installed by bolts, which is complicated to install. After installation, the air filter lacks a sealing assembly to seal the air filter, and an additional sealing device is needed to seal the air filter to effectively filter the air. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of air filters for oil injection screw rod compressor convenient to replace, filter cartridge is convenient to disassemble and replace, filter cartridge can effectively seal the gap between filter cartridge and filter installation port after installation, to solve the above technical problems.

[0004] To achieve the above object, the present application is realized by the following technical scheme:

[0005] A kind of air filter for oil injection screw rod compressor convenient to replace, comprising:

[0006] Tank body, the tank body top end is fixedly connected with flow direction mark, the tank body one side is fixedly connected with air suction pipe, the tank body other side is fixedly connected with exhaust pipe, the tank body inside top is equipped with air suction bin, the air suction bin top is equipped with filter bin, the exhaust pipe is communicated in filter bin inside through air suction bin, the filter bin inside is fixedly connected with air suction branch pipe, the air suction branch pipe top end is communicated with air suction bin, the exhaust pipe and air suction branch pipe outside are all equipped with vent, the exhaust pipe inside is fixedly connected with vortex plate;

[0007] Filter cartridge, the filter cartridge is installed in tank body inside, the filter cartridge includes: connecting ring, filter screen and bottom plate, the filter screen is fixedly connected to connecting ring bottom end, the bottom plate is fixedly connected to filter screen bottom end.

[0008] Further, the bottom plate both sides are equipped with sliding slot, the sliding slot inside is fixedly connected with limit shaft, the sliding slot inside is slidably connected with spigot, the spigot is slidably connected with limit shaft.

[0009] Further, the limiting shaft is sleeved with a first spring, and two ends of the first spring are fixedly connected with the cannula and one end of the sliding groove respectively, a push button is fixedly connected to the bottom end of the cannula, and a thimble is arranged on the inner side of the mounting port at the bottom end of the tank body.

[0010] Further, a circular groove is arranged at the top end of the bottom plate, a pressing plate is slidably connected to the inner side of the circular groove, a supporting rod is fixedly connected to the outer side of the pressing plate, a pressing ring is fixedly connected to the end of the supporting rod, a sliding groove is arranged on the outer side of the circular groove, the supporting rod is slidably connected with the sliding groove, a pressing groove is arranged on the outer side of the end of the sliding groove, the pressing ring is slidably connected with the pressing groove, and a rubber sealing ring is arranged in the pressing groove.

[0011] Further, a connecting shaft is fixedly connected to the bottom end of the pressing plate, and a connecting pipe is fixedly connected to the inner side of the bottom end of the circular groove.

[0012] Further, the connecting pipe and the connecting shaft are sleeved with a second spring, and two ends of the second spring are fixedly connected with the bottom end of the pressing plate and the inner side of the bottom end of the circular groove.

[0013] The air filter for the oil-injected screw compressor has the advantages that:

[0014] The air filter for the oil-injected screw compressor has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the air filter for the oil-injected screw compressor which is convenient to replace.

[0016] Figure 2 It is a sectional view of the tank body of the air filter for the oil-injected screw compressor which is convenient to replace.

[0017] Figure 3 It is a sectional view of the air filter for the oil-injected screw compressor which is convenient to replace.

[0018] Figure 4 It is a perspective view of the filter cartridge of the air filter for the oil-injected screw compressor which is convenient to replace.

[0019] Figure 5 It is an enlarged view of A of the air filter for the oil-injected screw compressor which is convenient to replace.

[0020] Figure 6It is the perspective view of the extrusion plate of the air filter convenient to replace for the oil-injected screw compressor of the utility model.

[0021] Figure 7 It is the sectional view of the filter cylinder of the air filter convenient to replace for the oil-injected screw compressor of the utility model.

[0022] Figure 8 It is the enlarged view of B of the air filter convenient to replace for the oil-injected screw compressor of the utility model.

[0023] Explanation of reference signs:

[0024] 1, tank body;2, flow direction mark;3, air suction pipe;4, air exhaust pipe;5, air suction bin;6, filter bin;7, air suction branch pipe;8, air vent;9, vortex plate;10, filter cylinder;11, connecting ring;12, filter screen;13, bottom plate;14, sliding groove;15, limiting shaft;16, insertion pipe;17, first spring;18, push button;19, insertion hole;20, extrusion plate;21, support rod;22, extrusion ring;23, connecting shaft;24, connecting pipe;25, second spring;26, circular groove;27, sliding groove;28, extrusion groove;29, rubber sealing ring. DETAILED DESCRIPTION

[0025] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals represent like elements, unless the context of use indicates otherwise. The following description of exemplary embodiments is not representative of all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus consistent with some aspects of the present disclosure as detailed in the appended claims.

[0026] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] As Figures 1 to 8As shown, the application provides a replaceable air filter for oil-injected screw compressor, comprising: a tank body 1, the top end of the tank body 1 is fixedly connected with a flow direction mark 2, one side of the tank body 1 is fixedly connected with a suction pipe 3, the other side of the tank body 1 is fixedly connected with an exhaust pipe 4, the inside of the tank body 1 is provided with a suction bin 5 at the top end, the top end of the suction bin 5 is provided with a filter bin 6, the exhaust pipe 4 passes through the suction bin 5 and communicates with the inside of the filter bin 6, the inside of the filter bin 6 is fixedly connected with a suction branch pipe 7, the top end of the suction branch pipe 7 communicates with the suction bin 5, the outside of the exhaust pipe 4 and the suction branch pipe 7 is provided with a ventilation opening 8, and the inside of the exhaust pipe 4 is fixedly connected with a vortex plate 9; a filter cylinder 10, the filter cylinder 10 is installed in the inside of the tank body 1, and the filter cylinder 10 comprises a connecting ring 11, a filter screen 12 and a bottom plate 13, the filter screen 12 is fixedly connected to the bottom end of the connecting ring 11, and the bottom plate 13 is fixedly connected to the bottom end of the filter screen 12.

[0028] The top end of the bottom plate 13 is provided with a circular groove 26, the inside of the circular groove 26 is slidably connected with an extrusion plate 20, the bottom end of the extrusion plate 20 is fixedly connected with a connecting shaft 23, the inside of the circular groove 26 is fixedly connected with a connecting pipe 24 at the bottom end, the connecting shaft 23 is slidably connected with the connecting pipe 24, the outside of the connecting pipe 24 and the connecting shaft 23 is sleeved with a second spring 25, and the two ends of the second spring 25 are fixedly connected with the bottom end of the extrusion plate 20 and the bottom end of the circular groove 26 respectively.

[0029] The outside of the extrusion plate 20 is fixedly connected with a support rod 21, the end of the support rod 21 is fixedly connected with an extrusion ring 22, the outside of the circular groove 26 is provided with a sliding groove 27, the support rod 21 is slidably connected with the sliding groove 27, the outside of the end of the sliding groove 27 is provided with an extrusion groove 28, the extrusion ring 22 is slidably connected with the extrusion groove 28, and the inside of the extrusion groove 28 is assembled with a rubber sealing ring 29.

[0030] The two sides of the bottom plate 13 are provided with sliding grooves 14, the inside of the sliding grooves 14 is fixedly connected with limiting shafts 15, the inside of the sliding grooves 14 is slidably connected with insertion pipes 16, the insertion pipes 16 are slidably connected with the limiting shafts 15, the outside of the limiting shafts 15 is sleeved with first springs 17, and the two ends of the first springs 17 are fixedly connected with the insertion pipes 16 and one end of the sliding grooves 14 respectively, the bottom end of the insertion pipe 16 is fixedly connected with a push button 18, the inside of the installation port of the bottom end of the tank body 1 is provided with an insertion hole 19, and the insertion pipe 16 can be slidably inserted into the inside of the insertion hole 19.

[0031] In specific use, the air filter is connected with the air pump, external air is sucked into the inside of the suction bin 5 through the suction pipe 3, is sucked into the inside of the filter bin 6 through the suction branch pipe 7, after the air is filtered through the filter screen 12 after passing through the filter cylinder 10, the air flows into the exhaust pipe 4 through the ventilation opening 8, and the flow rate of the air can be prompted through the vortex plate 9, so that the filtration of the air is completed.

[0032] When the filter cartridge 10 needs to be disassembled and replaced, the push button 18 is pushed to drive the insertion tube 16 to slide in the sliding groove 14 and extrude the first spring 17, the insertion tube 16 is removed from the insertion hole 19, at this time the filter cartridge 10 can be taken out from the bottom end of the tank body 1, and the disassembly of the filter cartridge 10 is completed.

[0033] A new filter cartridge 10 is replaced, the push button 18 is pushed to make the insertion tube 16 retract into the inside of the sliding groove 14, the filter cartridge 10 is inserted from the bottom end installation port of the tank body 1, and in the process of moving the filter cartridge 10, the bottom end of the exhaust pipe 4 presses the extrusion plate 20, the extrusion plate 20 drives the extrusion ring 22 to slide downward in the extrusion groove 28 through the support rod 21, extrudes the rubber sealing ring 29, and the rubber sealing ring 29 is attached to the inner wall of the bottom end installation port of the tank body 1, so that the filter cartridge 10 can keep the sealing of the filter bin 6 after installation, improve the filtering effect, the push button 18 is released, the first spring 17 pushes the insertion tube 16 to insert into the inside of the insertion hole 19, and the installation of the filter cartridge 10 is completed.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An air filter for an oil-injected screw compressor which is easy to replace, characterized in that Include: The tank body, the tank body top end fixed connection has flow direction mark, the tank body one side fixed connection has the air suction pipe, the tank body other side fixed connection has the exhaust pipe, the tank body inside top end open has the air suction warehouse, the air suction warehouse top end open has the filter warehouse, the exhaust pipe passes through the air suction warehouse and is communicated in the filter warehouse inboard, the filter warehouse inboard fixed connection has the air suction branch pipe, the air suction branch pipe top end and the air suction warehouse are communicated, the exhaust pipe and the air suction branch pipe outside all open have the ventilation opening, the exhaust pipe inboard fixed connection in the vortex plate; The filter cartridge is installed in the tank body, and the filter cartridge comprises a connecting ring, a filter screen and a bottom plate, the filter screen is fixedly connected to the bottom end of the connecting ring, and the bottom plate is fixedly connected to the bottom end of the filter screen.

2. The air filter for an oil-injected screw compressor according to claim 1, characterized in that Both sides of the bottom plate are provided with sliding grooves, the sliding grooves are fixedly connected with limit shafts inside, and the sliding grooves are slidably connected with insertion tubes inside.

3. The air filter for an oil-injected screw compressor with easy replacement according to claim 2, characterized in that The limit shafts are sleeved with first springs outside, and the first springs are fixedly connected with the insertion tubes and one end of the sliding grooves respectively, the insertion tubes are fixedly connected with push buttons at the bottom ends, the tank body is provided with an insertion hole inside the installation port, and the insertion tube can be slidably inserted into the insertion hole.

4. The easily replaceable air filter for oil-injected screw compressors according to claim 1, characterized in that The bottom plate is provided with a circular groove at the top end, the circular groove is slidably connected with a pressing plate inside, the pressing plate is fixedly connected with a supporting rod outside, the supporting rod is fixedly connected with a pressing ring at the end, the circular groove is provided with a sliding groove outside, the supporting rod is slidably connected with the sliding groove, the sliding groove is provided with a pressing groove outside at the end, the pressing ring is slidably connected with the pressing groove, and the pressing groove is provided with a rubber sealing ring inside.

5. The air filter for an oil-injected screw compressor according to claim 4, characterized in that The bottom plate is fixedly connected with a connecting shaft at the bottom end, and the circular groove is fixedly connected with a connecting pipe inside at the bottom end.

6. The air filter for an oil-injected screw compressor according to claim 5, characterized in that The connecting pipe and the connecting shaft are sleeved with second springs outside, and the second springs are fixedly connected with the bottom end of the pressing plate and the bottom end of the circular groove respectively.

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