CN217930745U

CN217930745U - Quick detection device of valve guide pipe gas tightness

Info

Publication number: CN217930745U
Application number: CN202222083540.3U
Authority: CN
Inventors: 刘晓春; 孙进兵; 王成友; 陈伟; 童烈爱
Original assignee: Anhui Sentuo New Material Co ltd
Current assignee: Anhui Sentuo New Material Co ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-11-29
Anticipated expiration: 2032-08-09

Abstract

The utility model relates to a pipe check out test set technical field specifically is a quick detection device of valve guide gas tightness, comprising a fixing base plate, logical groove A has been seted up to PMKD's upper end surface, the even fixedly connected with connecting rod A of PMKD's upper end surface, connecting rod A's one end fixedly connected with inflator, surface one side fixedly connected with air pump of inflator, the lower extreme outer fixed surface of inflator is connected with the valve stem, the surface upside fixedly connected with fixed plate of valve stem. The utility model discloses a control air pump is adjusted the atmospheric pressure in the inflator to cooperation pressure sensor monitors pressure value, realizes carrying out the purpose that detects to the pipe gas tightness, and drives the valve stem through setting up electric telescopic handle and stretch out and draw back, simulates the actual operation mode of valve stem, thereby has further improved the device's detection accuracy, and convenient and fast has improved the production quality of pipe.

Description

Quick detection device of valve guide pipe gas tightness

Technical Field

The utility model relates to a pipe check out test set technical field specifically is a quick detection device of valve guide gas tightness.

Background

The valve guide pipe has the functions of guiding the motion of the valve, ensuring that the valve can normally do reciprocating linear motion, ensuring that the valve can be correctly attached to a valve seat ring, transmitting the heat of a valve rod to a cylinder cover, and preventing a valve sealing sleeve (also called a valve oil seal) from entering a combustion chamber, wherein the valve sealing sleeve is one of important parts of an engine valve group, can prevent a large amount of engine oil from entering an air inlet and outlet pipe to cause engine oil loss, prevents exhaust gas from leaking and prevents engine oil from entering the combustion chamber.

In the production and processing process of the valve guide pipe, the air tightness of the valve guide pipe needs to be detected, the prior art generally detects the air tightness through a water filling mode at the joint of the valve guide pipe and the valve rod, the detection mode is not accurate enough, the ideal detection effect cannot be achieved, and therefore the production quality of the valve guide pipe is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a quick detection device for the air tightness of a valve guide pipe.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a valve guide pipe gas tightness short-term test device, includes PMKD, logical groove A has been seted up to PMKD's upper end surface, PMKD's the even fixedly connected with connecting rod A of upper end surface, connecting rod A's one end fixedly connected with inflator, surface one side fixedly connected with air pump of inflator, the lower extreme external surface fixedly connected with valve stem of inflator, the surface upside fixedly connected with fixed plate of valve stem, the laminating of the lower extreme surface of fixed plate is connected with the pipe, the lower extreme external surface fixedly connected with oil blanket of pipe, the internal surface and the valve stem of oil blanket laminate each other.

Preferably, one side of the top end of the inner surface of the inflator is fixedly connected with a pressure sensor, an air groove is formed in the center of the outer surface of the upper end of the valve rod, two through grooves B are uniformly formed in two sides of the outer surface of the valve rod, and the through grooves B are communicated with the air groove.

Preferably, the center of the top end of the inner surface of the inflator is fixedly connected with an electric telescopic rod, the lower side of the outer surface of the electric telescopic rod is uniformly and fixedly connected with a connecting rod B, and the lower end of the connecting rod B is fixedly connected with the valve rod.

Preferably, the fixed bottom plate is internally and uniformly provided with sliding grooves, the inner surfaces of the sliding grooves are connected with sliding blocks in a sliding mode, and springs are elastically connected between the sliding blocks and the sliding grooves.

Preferably, one side of the sliding block is designed to be an inclined structure, and the inclined plane of the sliding block is mutually abutted to the oil seal.

Preferably, the outer surface of the lower end of the fixing plate is fixedly connected with a sealing gasket, and the lower end of the sealing gasket is attached to the guide pipe.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a control air pump is adjusted the atmospheric pressure in the inflator to cooperation pressure sensor monitors pressure value, realizes carrying out the purpose that detects to the pipe gas tightness, and drives the valve stem and stretch out and draw back through setting up electric telescopic handle, simulates the actual operation mode of valve stem, thereby has further improved the device's detection accuracy, and convenient and fast has improved the production quality of pipe.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

fig. 4 is a schematic structural diagram of a point a in fig. 3 according to the present invention.

In the drawings, the reference numbers indicate the following list of parts: 1. fixing the bottom plate; 2. a through groove A; 3. a connecting rod A; 4. an air cylinder; 5. an air pump; 6. a valve stem; 7. a fixing plate; 8. a conduit; 9. oil sealing; 10. a pressure sensor; 11. an air tank; 12. a through groove B; 13. an electric telescopic rod; 14. a connecting rod B; 15. a chute; 16. a slider; 17. a spring; 18. and a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

The utility model provides a technical scheme: the rapid detection device for the air tightness of the valve guide pipe comprises a fixed base plate 1, wherein a through groove A2 is formed in the upper end outer surface of the fixed base plate 1, a connecting rod A3 is uniformly and fixedly connected to the upper end outer surface of the fixed base plate 1, an air cylinder 4 is fixedly connected to one end of the connecting rod A3, an air pump 5 is fixedly connected to one side of the outer surface of the air cylinder 4, a valve rod 6 is fixedly connected to the lower end outer surface of the air cylinder 4, a fixed plate 7 is fixedly connected to the upper side of the outer surface of the valve rod 6, a guide pipe 8 is connected to the lower end outer surface of the fixed plate 7, an oil seal 9 is fixedly connected to the lower end outer surface of the guide pipe 8, and the inner surface of the oil seal 9 is mutually attached to the valve rod 6. The pressure sensor 10 is fixedly connected to one side of the top end of the inner surface of the air cylinder 4, the air groove 11 is formed in the center of the outer surface of the upper end of the valve rod 6, two through grooves B12 are uniformly formed in two sides of the outer surface of the valve rod 6, and the through grooves B12 are communicated with the air groove 11. The center position of the top end of the inner surface of the inflator 4 is fixedly connected with an electric telescopic rod 13, the lower side of the outer surface of the electric telescopic rod 13 is uniformly and fixedly connected with a connecting rod B14, and the lower end of the connecting rod B14 is fixedly connected with the valve rod 6.

In the prior art, detection is generally carried out by a mode of pouring water into the joint of the valve guide pipe 8 and the valve rod 6, and the detection mode is not accurate enough and cannot achieve an ideal detection effect, so that the production quality of the valve guide pipe 8 is influenced. The utility model discloses a set up inflator 4, when examining pipe 8, can insert 6 surfaces of valve stem with pipe 8 along leading to groove A2, utilize oil blanket 9 and valve stem 6 to laminate each other and reach sealed effect. Control air pump 5 afterwards and inject the air into inflator 4, observe pressure sensing's index change, if pressure sensor 10's registration is unchangeable, then the leakproofness between oil blanket 9 and the valve stem 6 is good, rethread starts electric telescopic handle 13 and stretches out and draws back, the operation mode of valve stem 6 when simulating the vehicle and starting, the index change of rethread observation pressure sensing, if change law, then pipe 8's gas tightness meets the requirements, the utility model discloses a control air pump 5 adjusts the atmospheric pressure in inflator 4, monitors pressure numerical value with cooperation pressure sensor 10, realizes the purpose that detects pipe 8 gas tightness to drive valve stem 6 through setting up electric telescopic handle 13 and stretch out and draw back, simulate valve stem 6's actual operation mode, thereby further improved the device's detection accuracy, convenient and fast has improved pipe 8's production quality.

Further, as shown in fig. 3 and 4, sliding grooves 15 are uniformly formed in the fixed bottom plate 1, sliding blocks 16 are slidably connected to the inner surfaces of the sliding grooves 15, and springs 17 are elastically connected between the sliding blocks 16 and the sliding grooves 15. One side of the sliding block 16 is designed to be an inclined structure, and the inclined surface of the sliding block 16 is abutted against the oil seal 9.

The utility model discloses a set up elastic connection between 16 and the spout 15 of slider, before inserting the pipe 8 into the surface of valve stem 6, at first slide 16 and make its shrink, insert the pipe 8 into the surface of valve stem 6 again, release slider 16 afterwards, make slider 16 receive the influence of spring 17 elasticity to take place to slide and contact with oil blanket 9 to fix pipe 8, prevent that the condition that takes place relative slip between pipe 8 and the valve stem 6 from appearing.

Further, as shown in fig. 3, a sealing gasket 18 is fixedly connected to the outer surface of the lower end of the fixing plate 7, and the lower end of the sealing gasket 18 is attached to the conduit 8.

The utility model discloses a set up sealed 18 and pipe 8 of filling up and laminate each other to improve the leakproofness between pipe 8 and the fixed plate 7, prevented that the gap from appearing between the two and influencing the condition appearance of testing result.

The working principle is as follows: the utility model discloses a set up inflator 4, when examining pipe 8, can insert 6 surfaces of valve stem with pipe 8 along leading to groove A2, utilize oil blanket 9 and valve stem 6 to laminate each other and reach sealed effect. And then controlling the air pump 5 to inject air into the air cylinder 4, observing the index change of pressure sensing, if the reading of the pressure sensor 10 is unchanged, ensuring that the sealing property between the oil seal 9 and the valve rod 6 is good, starting the electric telescopic rod 13 to stretch and retract, simulating the running mode of the valve rod 6 when a vehicle is started, and observing the index change of the pressure sensing, wherein if the change rule is changed, the air tightness of the guide pipe 8 meets the requirement. In addition, by arranging the elastic connection between the sliding block 16 and the sliding groove 15, before the guide pipe 8 is inserted into the outer surface of the valve rod 6, the sliding block 16 is firstly slid to contract, then the guide pipe 8 is inserted into the outer surface of the valve rod 6, and then the sliding block 16 is released, so that the sliding block 16 slides under the influence of the elastic force of the spring 17 and is contacted with the oil seal 9, thereby fixing the guide pipe 8 and preventing the relative sliding between the guide pipe 8 and the valve rod 6.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended to aid in the description of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best understand the invention and its practical application. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a quick detection device of valve guide gas tightness, includes PMKD (1), its characterized in that: the upper end surface of PMKD (1) has been seted up and has been led to groove A (2), the even fixedly connected with connecting rod A (3) of upper end surface of PMKD (1), the one end fixedly connected with inflator (4) of connecting rod A (3), surface one side fixedly connected with air pump (5) of inflator (4), the lower extreme outer fixed surface of inflator (4) is connected with valve stem (6), the surface upside fixedly connected with fixed plate (7) of valve stem (6), the lower extreme surface laminating of fixed plate (7) is connected with pipe (8), the lower extreme outer fixed surface of pipe (8) is connected with oil blanket (9), the internal surface and the valve stem (6) of oil blanket (9) laminate each other.

2. The device for rapidly detecting the air tightness of the valve guide pipe according to claim 1, characterized in that: the gas cylinder is characterized in that a pressure sensor (10) is fixedly connected to one side of the top end of the inner surface of the gas cylinder (4), a gas groove (11) is formed in the center of the outer surface of the upper end of the valve rod (6), two through grooves B (12) are uniformly formed in two sides of the outer surface of the valve rod (6), and the through grooves B (12) are communicated with the gas groove (11) mutually.

3. The device for rapidly detecting the air tightness of the valve guide pipe according to claim 2, characterized in that: the air cylinder is characterized in that an electric telescopic rod (13) is fixedly connected to the center of the top end of the inner surface of the air cylinder (4), a connecting rod B (14) is uniformly and fixedly connected to the lower side of the outer surface of the electric telescopic rod (13), and the lower end of the connecting rod B (14) is fixedly connected with the valve rod (6).

4. The device for rapidly detecting the air tightness of the valve guide pipe according to claim 1, characterized in that: the inside of PMKD (1) has evenly seted up spout (15), the internal surface sliding connection of spout (15) has slider (16), elastic connection has spring (17) between slider (16) and spout (15).

5. The device for rapidly detecting the airtightness of the valve guide according to claim 4, wherein: one side of the sliding block (16) is designed to be an inclined structure, and the inclined plane of the sliding block (16) is mutually butted with the oil seal (9).

6. The device for rapidly detecting the airtightness of the valve guide according to claim 4, wherein: the outer surface of the lower end of the fixing plate (7) is fixedly connected with a sealing gasket (18), and the lower end of the sealing gasket (18) is attached to the guide pipe (8) mutually.