CN202789549U - Air inlet valve of air compressor - Google Patents

Abstract

The utility model relates to the technical field of air compressors, particularly to an air inlet valve of an air compressor. The air inlet valve comprises an integral valve body which is provided with an upper air inlet and a lower air outlet, wherein a valve core, a check valve assembly and a sealing assembly are arranged in the valve body, a pressure release valve is installed on one side of the valve body, the valve core is installed in the valve body in a direction of the lower air outlet, a chassis is arranged at the lower part of the valve core, and the lower end face of the chassis is flush with an end face of the lower air outlet of the valve body. According to the structure, the structure of the valve body is simplified, the usage of a spring is avoided, the cost is reduced, the air inlet valve is convenient to assemble and operate, the valve core can bear the impact of air pressure better, and the service life is long. Besides, the valve body is provided with by-pass air passages, a plastic air pipe is not required to be used for being communicated with the pressure release valve, the air tightness can be guaranteed, air leakage is prevented, and the air inlet valve is durable.

Description

A kind of air compressor gas valve

Technical field:

The utility model relates to the Air Compressor Equipment technical field, refers in particular to a kind of air compressor gas valve.

Background technique:

Therefore the spool of the suction valve of air compressor can be subject to the impact from suction port direction air pressure in breathing process, need to guarantee that in the assembling of suction valve with in installing spool can sustain impact in the axial direction.A kind of suction valve is disclosed in the Chinese patent application " a kind of air inlet valve of screw compressor " (number of patent application 201110134255.3), its spool is that the step surface of dependence integrated type valve body inwall and a jump ring that is installed in valve interior wall form axially locating, namely at the concordant place of chassis end face of inwall with the spool of valve body, offer a groove radially, then jump ring is stuck in the groove, the part that jump ring radially protrudes from groove plays the effect that stops and locate spool.This mode of structure must be offered radial groove at valve interior wall, and its processing is comparatively loaded down with trivial details, and also inconvenience of fitting operation.Owing to when the bottom end face of suction valve valve body is connected with the suction port end face of air compressor, need to install seal ring, therefore also need to offer again another groove at the bottom end face of suction valve valve body.In addition, suction valve valve body sidepiece is equipped with Decompression valves, and Decompression valves is that the tracheae by the outside goes out to be communicated with the suction port of suction valve, and such mode of communicating tightness is relatively poor and working life short.

The model utility content:

The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, and the air compressor gas valve that a kind of structure is more simple, the assembling installation is more convenient is provided.

The utility model realizes that the technological scheme that its purpose adopts is: a kind of air compressor gas valve, comprise an integrated type valve body with top suction port and air outlet, bottom, be provided with spool and check valve assembly and black box in this valve body, the sidepiece of valve body is equipped with Decompression valves, spool is installed on the valve body from air outlet, bottom direction, the bottom of described spool is provided with the chassis, and the lower end surface on described chassis is concordant with air outlet, the bottom end face of described valve body.

Particularly, in the chassis of the air outlet of described valve body inwall and the described spool outer wall valve body step surface and the spool step surface that match of forming shape respectively.

Between the chassis outer wall of the valve body step surface of described valve body and described spool, form a mounting groove that O-ring seal is installed.

Also be formed with the bypass air flue that is communicated with the Decompression valves of its sidepiece on the described valve body.

The utility model passes through said structure, make the designs simplification of valve body and saved the use jump ring, cost decreases, and the assembling of suction valve and fitting operation convenience, and spool can bear better air pressure and impact, long service life, in addition, the utility model carries the bypass air flue at valve body, need not to be communicated with Decompression valves with the plastic cement tracheae, can guarantee tightness, prevent gas leakage and durable in use.

Description of drawings:

Fig. 1, Fig. 2 are sectional view and the worm's eye views of valve body in the utility model suction valve;

Fig. 3, Fig. 4 are sectional view and the plan views of spool in the utility model suction valve;

Fig. 5 is the structural representation after the combination of valve body and spool in the utility model suction valve.

Embodiment:

Below in conjunction with specific embodiments and the drawings the utility model is further specified.

Air compressor gas valve described in the utility model, comprise an integrated type valve body 1 with top suction port and air outlet, bottom, as shown in Figure 1 and Figure 2, be provided with spool 2 (as shown in Figure 3, Figure 4) and check valve assembly and black box in this valve body 1, the sidepiece of valve body 1 is equipped with Decompression valves.(this not shown check valve assembly, black box and Decompression valves etc., it is consistent with prior art, and is therefore not shown.)

In conjunction with Fig. 5, spool 2 is installed on the valve body 1 from air outlet, bottom direction again, and the bottom of described spool 2 is provided with chassis 21, and the lower end surface on described chassis 21 is concordant with air outlet, the bottom end face 11 of described valve body 1.Particularly, in the chassis of the air outlet of described valve body 1 inwall and the described spool 2 21 outer walls valve body step surface 10 and the spool step surface 20 that match of forming shape respectively.Namely realize that by valve body step surface 10 and spool step surface 20 spool 2 is by location up, air outlet, bottom; 21 lower end surfaces, spool 2 chassis then are to locate by the suction port end face of air compressor, because the lower end surface of spool chassis 21 is concordant with air outlet, the bottom end face 11 of valve body 1, therefore after valve body 1 is assembled with the air compressor air intake mouth, 21 lower end surfaces, chassis of spool 2 will with air compressor air intake mouth end contact (the chassis diameter that only need guarantee spool 2 gets final product greater than the diameter of air compressor air intake mouth), thereby utilize stopping and positioning action of air compressor air intake mouth end face, guarantee that spool can bear the impact from top air pressure.

In addition, between chassis 21 outer walls of the valve body step surface 10 of described valve body 1 and described spool 2, form a mounting groove 12 that O-ring seal is installed.So just need not to offer separately groove at the bottom end face of valve body 1, can directly O-ring seal be inserted in this mounting groove 12, install rear and air compressor air intake mouth end face formation sealing.

Also be formed with the bypass air flue 13 that is communicated with the Decompression valves of its sidepiece on the described valve body 1, utilize the integrated bypass air flue 13 of this and valve body to replace original mode that is connected with tracheae, realization is communicated with Decompression valves, solves gas leakage and short-life problem.

To sum up, the utility model makes the designs simplification of valve body and has saved the use jump ring by said structure, and cost decreases, and the assembling of suction valve and fitting operation convenience, spool can bear better air pressure and impact, long service life, in addition, the utility model carries the bypass air flue at valve body, need not to be communicated with Decompression valves with the plastic cement tracheae, can guarantee tightness, prevent gas leakage and durable in use.

Claims (4)

1. air compressor gas valve, comprise an integrated type valve body (1) with top suction port and air outlet, bottom, be provided with spool (2) and check valve assembly and black box in this valve body (1), the sidepiece of valve body (1) is equipped with Decompression valves, spool (2) is installed on the valve body (1) from air outlet, bottom direction, it is characterized in that: the bottom of described spool (2) is provided with chassis (21), and the lower end surface of described chassis (21) is concordant with air outlet, the bottom end face (11) of described valve body (1).

2. a kind of air compressor gas valve according to claim 1 is characterized in that: in chassis (21) outer wall of the air outlet inwall of described valve body (1) and described spool (2) the valve body step surface (10) and the spool step surface (20) that match of forming shape respectively.

3. a kind of air compressor gas valve according to claim 1 and 2 is characterized in that: form a mounting groove (12) that O-ring seal is installed between chassis (21) outer wall of the valve body step surface (10) of described valve body (1) and described spool (2).

4. a kind of air compressor gas valve according to claim 1 is characterized in that: also be formed with the bypass air flue (13) that is communicated with the Decompression valves of its sidepiece on the described valve body (1).

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