Primary air inlet valve

Abstract

The utility model discloses a primary air inlet valve in the field of air inlet valves, which comprises a valve cover and a valve seat arranged below the valve cover, a limit hole is arranged in the middle of the valve cover, a threaded connection hole is arranged at the bottom of the valve seat, and the valve cover is connected with the valve seat through a locking stud and a locking nut which are arranged in the middle of the valve cover. The locking stud is in threaded connection with the threaded connection hole in the valve seat, a limiting boss installed in the limiting hole is integrally formed in the middle of the locking stud, and the upper portion of the locking stud penetrates through a hole in the top of the valve deck and then is in threaded connection with the locking nut. According to the utility model, the locking stud is matched with the locking nut, so that the valve cover and the valve seat can be fixedly connected, the connecting strength of the valve cover and the valve seat can be improved by arranging the anti-reverse locking screw, and the efficiency of mounting, dismounting, maintaining and replacing parts of the valve body can be greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of inlet valve, specifically is primary inlet valve. BACKGROUND

[0002] The air valve is the most critical and easily damaged component in the compressor, and its performance directly affects the compressor flow, power consumption and machine running time. Even in the shortest time, it can affect the work of the compressor, which not only affects the power consumption and output, but also greatly shortens the operation cycle of the equipment, increases the instability of production and the consumption of workshop materials, and the air valve replacement frequency is high and the personnel workload is large.

[0003] However, the existing inlet valve is mostly connected by setting multiple fasteners around during installation, which is low in installation and disassembly efficiency, not practical, and in the air inlet part, the valve plate is sealed by a spring, and once the spring is damaged, it cannot work normally. Therefore, the primary inlet valve is provided by the person skilled in the art to solve the problems raised in the above background technology. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing primary inlet valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The primary inlet valve comprises a valve cover and a valve seat arranged below the valve cover, a limiting hole is formed in the middle part of the valve cover, a threaded connection hole is formed in the bottom of the valve seat, the valve cover and the valve seat are connected through the locking stud and the locking nut arranged in the middle part, the locking stud is connected with the threaded connection hole on the valve seat through threads, a limiting boss integrated in the limiting hole is formed in the middle part of the locking stud, and the locking nut is connected with the locking stud through threads after the locking stud penetrates the hole in the top of the valve cover;

[0007] After the locking stud and the threaded connection hole on the valve seat are tightly installed through threads, a locking thread hole is formed in the bottom of the connection part, and an anti-reverse locking screw is connected in the locking thread hole through threads.

[0008] As a further scheme of the utility model: a plurality of air inlet holes are equally spaced and formed in the top of the valve cover in the circumferential direction, and an annular air inlet ring is formed in the bottom of the valve cover at the air inlet hole.

[0009] As a further scheme of the utility model: a plurality of annular double-ring net-shaped PEEK valve plates are arranged above the valve seat, a cavity for accommodating the double-ring net-shaped PEEK valve plate is formed above the valve seat, and a plurality of through holes and a plurality of air outlet holes are evenly distributed and staggered on the valve seat in the circumferential direction.

[0010] As a further scheme of the utility model: the spring support hole that is established with the through hole concentric and diameter is greater than the through hole is established on the valve seat at the through hole, spring is placed inside the spring support hole, the top of spring is close to the double ring netted PEEK valve sheet.

[0011] As a further scheme of the utility model: the top of double ring netted PEEK valve sheet is close to the air inlet ring, and the valve seat is fixedly connected with the guide column for providing the double ring netted PEEK valve sheet with the ascending and descending guidance.

[0012] As a further scheme of the utility model: the joint part of valve seat and valve cover is provided with the pin hole for installing the positioning pin.

[0013] As a further scheme of the utility model: the isolation ring is integrally formed between the double ring netted PEEK valve sheet in the cavity on the valve seat.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1, the utility model discloses a locking stud and locking nut cooperate, can realize the fixed connection of valve cover and valve seat to setting anti-reverse locking screw can improve the strength of locking two connections, and can greatly improve the efficiency of valve body installation and disassembly maintenance and replacement parts.

[0016] 2, the utility model discloses when in the pressure of air inlet hole is greater than the pressure of spring and valve body inside air outlet hole, the double ring netted PEEK valve sheet is guided under the guide of guide column, and moves downward, realizes the air intake, adopts multiple springs to support, can effectively avoid the problem of single spring time, greatly improves the service life, and the air inlet hole and air outlet hole are set up multiple, can improve the air intake efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the sectional view structural schematic diagram of the utility model;

[0018] Fig. 2 It is the bottom view of valve seat in the utility model;

[0019] Fig. 3 It is the bottom view of valve cover in the utility model.

[0020] In the figure: 1, valve cover; 101, limiting hole; 2, valve seat; 201, threaded connection hole; 3, locking stud; 301, limiting boss; 4, locking threaded hole; 5, anti-reverse locking screw; 6, locking nut; 7, air inlet hole; 7001, air inlet ring; 8, double-ring mesh PEEK valve plate; 9, air outlet hole; 10, spring support hole; 1001, through hole; 11, spring; 12, positioning pin; 13, directional column. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. 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.

[0022] Please refer to Figs. 1-3 In the embodiments of the utility model, the primary air inlet valve comprises a valve cover 1 and a valve seat 2 arranged below the valve cover 1. A limiting hole 101 is formed in the middle of the valve cover 1, and a threaded connection hole 201 is formed in the bottom of the valve seat 2. The valve cover 1 and the valve seat 2 are connected through a locking stud 3 and a locking nut 6 arranged in the middle. The locking stud 3 is connected with the threaded connection hole 201 on the valve seat 2 through threads. A limiting boss 301 is integrally formed in the middle of the locking stud 3 and arranged inside the limiting hole 101. The locking stud 3 is connected with the locking nut 6 through threads after penetrating the hole in the top of the valve cover 1.

[0023] After the locking stud 3 and the threaded connection hole 201 on the valve seat 2 are fastened through threads, a locking threaded hole 4 is formed in the bottom of the connecting part between the two.

[0024] Through the above technical solution, the locking stud 3 and the locking nut 6 can be matched to realize the fixed connection of the valve cover 1 and the valve seat 2. The anti-reverse locking screw 5 arranged in the middle can improve the strength of the connection between the two, thereby greatly improving the efficiency of valve body installation, disassembly, maintenance and replacement of parts.

[0025] Wherein, the valve cover 1 top along the circumferential direction equal interval is provided with a plurality of air inlet holes 7, the bottom of valve cover 1 is located at the air inlet hole 7 and is provided with annular air inlet ring 7001, the valve seat 2 is provided with a plurality of annular double ring net PEEK valve sheet 8, and the valve seat 2 is provided with a cavity for accommodating double ring net PEEK valve sheet 8, the valve seat 2 is staggered along the circumferential direction and is provided with a plurality of through holes 1001 and a plurality of air outlet holes 9, the valve seat 2 is provided with spring 11 support hole 10 at through hole 1001, the spring 11 support hole 10 is placed with spring 11, and the top of spring 11 is close to double ring net PEEK valve sheet 8.

[0026] By adopting the above technical scheme, when the pressure at the air inlet hole 7 is greater than the pressure at the spring 11 and the air outlet hole 9 inside the valve body, the double ring net PEEK valve sheet 8 moves downward under the guidance of the guide column, realizes air intake, adopts multiple groups of springs 11 for support, can effectively avoid the problem of single spring 11 aging, greatly improves the service life, and the multiple air inlet holes 7 and air outlet holes 9 can improve the air intake efficiency.

[0027] Wherein, the top of double ring net PEEK valve sheet 8 is close to air inlet ring 7001, and the valve seat 2 is fixedly connected with a guide column for providing upward and downward guidance for double ring net PEEK valve sheet 8.

[0028] Wherein, the combination part of valve seat 2 and valve cover 1 is provided with a pin hole for installing positioning pin 12, which can realize the connection and positioning of valve seat 2 and valve cover 1.

[0029] In this embodiment, the cavity on the valve seat 2 is integrally formed with a separation ring between the double ring net PEEK valve sheets 8.

[0030] Working principle, when using, the valve sheet is installed at the recent passage, the valve sheet can realize the fixed connection of valve cover 1 and valve seat 2 by cooperating with locking stud 3 and locking nut 6, the setting of anti-reverse locking screw 5 can improve the strength of locking the two connections, thereby the efficiency of valve body installation and disassembly, maintenance and replacement of parts can be greatly improved, when the pressure at the air inlet hole 7 is greater than the pressure at the spring 11 and the air outlet hole 9 inside the valve body, the double ring net PEEK valve sheet 8 moves downward under the guidance of the guide column, realizes air intake, adopts multiple groups of springs 11 for support, can effectively avoid the problem of single spring 11 aging, greatly improves the service life, and the multiple air inlet holes 7 and air outlet holes 9 can improve the air intake efficiency.

[0031] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A primary intake valve, comprising a valve cover (1) and a valve seat (2) disposed below the valve cover (1), characterized in that: The valve cover (1) has a limiting hole (101) in the middle, and the valve seat (2) has a threaded connection hole (201) at the bottom. The valve cover (1) and the valve seat (2) are connected by a locking stud (3) and a locking nut (6) in the middle. The locking stud (3) is threaded to the threaded connection hole (201) on the valve seat (2). The locking stud (3) has an integrally formed limiting boss (301) installed inside the limiting hole (101) in the middle. The upper part of the locking stud (3) passes through the hole at the top of the valve cover (1) and is threaded to the locking nut (6). After the locking stud (3) is threadedly installed and tightened into the threaded connection hole (201) on the valve seat (2), a locking threaded hole (4) is opened at the bottom of the connection between the two, and an anti-reverse locking screw (5) is threaded inside the locking threaded hole (4).

2. The first-stage intake valve according to claim 1, characterized in that: The valve cover (1) has multiple air inlets (7) at equal intervals along the circumferential direction at its top, and an annular air inlet ring (7001) is provided at the bottom of the valve cover (1) at the air inlets (7).

3. The first-stage intake valve according to claim 2, characterized in that: The valve seat (2) is provided with a plurality of annular double-ring mesh PEEK valve plates (8) above it, and a cavity for accommodating the double-ring mesh PEEK valve plates (8) is provided above the valve seat (2). A plurality of through holes (1001) and a plurality of air outlet holes (9) are evenly distributed and staggered along the circumference of the valve seat (2).

4. The first-stage intake valve according to claim 3, characterized in that: The valve seat (2) has a spring (11) support hole (10) located at the through hole (1001) and is concentric with the through hole (1001) and has a diameter larger than the through hole (1001). A spring (11) is placed inside the spring (11) support hole (10), and the top of the spring (11) is close to the double-ring mesh PEEK valve plate (8).

5. The first-stage intake valve according to claim 4, characterized in that: The top of the double-ring mesh PEEK valve plate (8) is in close contact with the intake ring (7001), and a guide post for providing upward and downward guidance for the double-ring mesh PEEK valve plate (8) is fixedly connected to the valve seat (2).

6. The first-stage intake valve according to claim 5, characterized in that: The valve seat (2) and the valve cover (1) are provided with a pin hole for installing a positioning pin (12).

7. The first-stage intake valve according to claim 3, characterized in that: An isolation ring is integrally formed in the cavity of the valve seat (2) between the double-ring mesh PEEK valve plates (8).

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