Exhaust valve with good sealing performance

Abstract

The utility model discloses an exhaust valve with good sealing performance, which comprises a valve main body, a partition plate is arranged in the valve main body, the valve main body is divided into two independent cavities by the partition plate, and a vent hole is formed in the partition plate in a penetrating manner; the supporting piece is detachably connected to one end of the valve main body; one end of the elastic piece is in contact connection with the supporting piece; the sealing piece is arranged in the valve main body, is in contact connection with the elastic piece and can be in contact sealing connection with the vent hole; and the valve bonnet is detachably connected to the other end, opposite to the supporting piece, of the valve main body, can be in contact connection with the sealing piece and can enable the sealing piece to be separated from the ventilation hole from sealing connection. According to the grease gun exhaust valve, the valve body, the supporting piece, the elastic piece, the sealing piece and the valve bonnet are matched with one another, so that exhaust and sealing operation can be achieved respectively, and the problem that an existing grease gun exhaust valve is poor in sealing performance is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust valves, in particular to an exhaust valve with good sealing performance. Background Art

[0002] Grease guns can be used to add grease to motor vehicles and production lines to play the role of lubrication, maintenance and rust prevention. They are small in size, light in weight, easy to use and carry. Generally, there should be no air in the grease gun barrel. If there is air, it is difficult to pump out the grease. This requires an exhaust port to be provided on the grease gun for exhaust. Although the exhaust valve in the prior art can achieve the exhaust function, the sealing effect is not good, and there is a problem of grease leakage. In particular, when the grease gun is operating to pump grease, the internal pressure increases, which makes it more likely to leak oil. Therefore, an exhaust valve with good sealing performance is provided to solve the above problems. Utility Model Content

[0003] One of the purposes of the utility model is to provide an exhaust valve with good sealing performance, so as to solve the problem of poor sealing performance of the exhaust valve of the existing grease gun.

[0004] The utility model provides an exhaust valve with good sealing performance through the following technical solutions:

[0005] The utility model discloses an exhaust valve with good sealing performance, which is used on a grease gun, comprising a valve body, which is a hollow cavity with openings at both ends, a partition provided in the valve body, the partition dividing the valve body into two separate chambers, and an air vent being provided through the partition; a support member, which is a hollow cavity, and the support member is detachably connected to one end of the valve body; an elastic member, which is arranged in the valve body and one end of which is in contact with the support member; a sealing member, which is arranged in the valve body and in contact with the elastic member, and the sealing member can be in contact and sealed connection with the air vent; a valve cap, which is detachably connected to the other end of the valve body opposite to the support member and can be in contact and connected with the sealing member, and the valve cap can separate the sealing member from the air vent.

[0006] In one embodiment, the sealing element is a spherical steel ball.

[0007] In one embodiment, the sealing member is a conical sealing cap.

[0008] In one embodiment, the conical sealing cap includes a connecting rod, which is arranged through the elastic member; a sealing cap body is integrally formed on one side of the connecting rod and has a conical shape. The sealing cap body can be in contact and sealed with the vent hole.

[0009] In one embodiment, a first external thread is provided at one end of the valve body, and the valve body is detachably threadedly connected to the exhaust port of the grease gun through the first external thread.

[0010] In one embodiment, an exhaust passage is provided through the valve body.

[0011] In one embodiment, internal threads are respectively provided on the inner walls of the opposite ends of the valve body, and the support member and the valve cap are detachably connected to the valve body through the corresponding internal threads.

[0012] In one embodiment, the support member adopts a headless hollow screw with a through hole passing through it; the outer side of the support member is provided with a second external thread, and the second external thread and the corresponding internal thread are detachably threadedly connected.

[0013] In one embodiment, the valve bonnet includes a pressure rod, a threaded rod and a valve bonnet body arranged in sequence; the pressure rod can be in contact and connected with the sealing member; the threaded rod and the corresponding internal thread are detachably threadedly connected.

[0014] In one embodiment, the elastic member is a spring.

[0015] Compared with the prior art, the beneficial effects of the exhaust valve with good sealing performance of the utility model are:

[0016] The grease gun is prevented from leaking out through the vent hole by the sealing member, thereby preventing the grease in the grease gun from leaking out through the vent hole and realizing the sealing function of the vent valve. In particular, when the grease gun is oiling, the internal pressure thereof is increased, and the sealing member is more tightly squeezed against the vent hole under the action of the grease pressure, thereby achieving a better sealing effect and effectively solving the problem of poor sealing performance of the vent valve of the existing grease gun. The grease gun is prevented from leaking out through the vent hole by the sealing member, thereby preventing the grease in the grease gun from leaking out through the vent hole and realizing the sealing function of the vent valve. In particular, when the grease gun is oiling, the internal pressure thereof is increased, and the sealing member is more tightly squeezed against the vent hole under the action of the grease pressure, thereby achieving a better sealing effect and effectively solving the problem of poor sealing performance of the vent valve of the existing grease gun. The grease gun is prevented from leaking out through the vent hole by the sealing member, thereby preventing the grease in the grease gun from leaking out through the vent hole and realizing the sealing function of the vent valve BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural diagram of a first embodiment of an exhaust valve with good sealing performance according to the present invention;

[0019] Figure 2 yes Figure 1 The figure shows a cross-sectional structural diagram of a first embodiment of an exhaust valve with good sealing performance according to the present invention in a sealed state;

[0020] Figure 3 yes Figure 1 The figure shows a cross-sectional structural diagram of a first embodiment of an exhaust valve with good sealing performance according to the present invention in an exhaust state;

[0021] Figure 4 yes Figure 1 The figure shows the exploded structure of the first embodiment of the exhaust valve with good sealing performance of the utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the second embodiment of the exhaust valve of the utility model with good sealing performance in a sealed state;

[0023] Figure 6 yes Figure 5 The figure shows an exploded structure diagram of a second embodiment of an exhaust valve with good sealing performance according to the present invention.

[0024] Markings in the figure: 10, exhaust valve; 11, valve body; 111, partition; 1111, vent; 112, first external thread; 113, exhaust channel; 114, internal thread; 12, support member; 121, through hole; 122, second external thread; 13, elastic member; 14, first sealing member; 15, valve cap; 151, pressure rod; 152, threaded rod; 153, valve cap body; 16, second sealing member; 161, connecting rod; 162, sealing cap body. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0027] First embodiment

[0028] See also Figure 1-Figure 4 As shown in the embodiment, the utility model is an exhaust valve 10 with good sealing performance, which is mainly used in grease guns, and includes a valve body 11, a support member 12, an elastic member 13, a first sealing member 14 and a valve cap 15; the valve body 11 is a hollow cavity with openings at both ends, which can be detachably connected to the exhaust port of the grease gun, and a partition 111 is provided in the valve body 11, which divides the valve body 11 into two separate chambers, and a vent hole 1111 is provided through the partition 111, and the two separate chambers are connected through the vent hole 1111; the support member 12 is a hollow cavity, which can be detachably connected to one end of the valve body 11; the elastic member 13, the first sealing member 14 and the valve cap 15 A sealing member 14 is in contact with and connected to the support member 12 in sequence, and both are disposed in the valve body 11. The support member 12 provides support force to the elastic member 13, and the elastic member 13 provides compression and restoring force to the first sealing member 14. The first sealing member 14 is in contact with and sealed to the vent hole 1111, thereby preventing grease in the grease gun from leaking out through the vent hole 1111. The valve cap 15 is detachably connected to the other end of the valve body 11 opposite the support member 12 and is in contact with and connected to the first sealing member 14, which can disengage the first sealing member 14 from the vent hole 1111, thereby allowing gas in the grease gun to be discharged through the vent hole 1111. Specifically, the elastic member 13 is a spring, and the first sealing member 14 is a spherical steel ball.

[0029] See also Figure 1-Figure 4As shown, in this embodiment, a first external thread 112 is provided at one end of the valve body 11, which is detachably threadedly connected to the exhaust port of the grease gun via the first external thread 112; an exhaust channel 113 is provided through the valve body 11, and the gas exhausted from the vent 1111 is discharged into the outside atmosphere through the exhaust channel 113; internal threads 114 are provided on the inner walls of the opposite ends of the valve body 11, and the support member 12 and the valve cap 15 are detachably connected to the valve body 11 via the corresponding internal threads 114. In this embodiment, the support member 12 adopts a headless hollow screw with a through hole 121 extending therethrough, through which the gas in the grease gun enters the valve body 11; a second external thread 122 is provided on the outer side of the support member 12, and the second external thread 122 cooperates with the corresponding internal thread 114, so that the support member 12 can be detachably threadedly connected to the valve body 11.

[0030] See also Figure 2-Figure 4 As shown, in this embodiment, the valve bonnet 15 includes a pressure rod 151, a threaded rod 152 and a valve bonnet body 153 which are arranged in sequence; the pressure rod 151 can be in contact and connected with the first sealing member 14, and it moves downward to be in contact and connected with the first sealing member 14. When the pressure applied by the pressure rod 151 to the first sealing member 14 is greater than the clamping force applied by the elastic member 13 to the first sealing member 14, the first sealing member 14 also moves downward to be separated from the sealing connection with the vent hole 1111, so that the gas in the grease gun is discharged to the outside atmosphere through the vent hole 1111 and the exhaust channel 113 in sequence; the threaded rod 152 and the corresponding internal thread 114 are detachably threadedly connected, so that the valve bonnet 15 is detachably threadedly connected to the valve body 11; the valve bonnet 15 is conveniently screwed and moved on the valve body 11 through the valve bonnet body 153.

[0031] Second embodiment

[0032] See also Figure 5 and Figure 6As shown in the embodiment, the utility model is an exhaust valve 10 with good sealing performance, which is mainly used in grease guns, and includes a valve body 11, a support member 12, an elastic member 13, a second sealing member 16 and a valve cap 15; the valve body 11 is a hollow cavity with openings at both ends, which can be detachably connected to the exhaust port of the grease gun, and a partition 111 is provided in the valve body 11, which divides the valve body 11 into two separate chambers, and a vent hole 1111 is provided through the partition 111, and the two separate chambers are connected through the vent hole 1111; the support member 12 is a hollow cavity, which can be detachably connected to one end of the valve body 11; the elastic member 13, the second sealing member 16 and the valve cap 15 The two sealing members 16 are in contact with and connected to the support member 12 in sequence, and both are respectively arranged in the valve body 11. The support member 12 provides a supporting force to the elastic member 13, and the elastic member 13 provides a pressing force and a restoring force to the second sealing member 16. The second sealing member 16 can be in contact with and sealed with the vent hole 1111, thereby preventing the grease in the grease gun from leaking out through the vent hole 1111. The valve cap 15 is detachably connected to the other end of the valve body 11 opposite to the support member 12 and can be in contact with and connected to the second sealing member 16, which can separate the second sealing member 16 from the vent hole 1111, thereby allowing the gas in the grease gun to be discharged through the vent hole 1111. Specifically, the elastic member 13 is a spring.

[0033] See also Figure 5 and Figure 6 As shown, specifically, the second sealing member 16 adopts a conical sealing cap, which includes a connecting rod 161 and a sealing cap body 162. The connecting rod 161 is set through the elastic member 13; the sealing cap body 162 is conical in shape, and is integrally formed on one side of the connecting rod 161 and can be in contact and sealed connection with the vent hole 1111.

[0034] It should be noted that the specific working process of the exhaust valve 10 with good sealing performance of the present invention is as follows: the exhaust valve 10 is detachably threadedly connected to the exhaust port of the grease gun through the first external thread 112; when the exhaust valve 10 needs to be exhausted, the first seal 14 or the second seal 16 is squeezed downward by screwing the valve cap 15 forward, so that the first seal 14 or the second seal 16 is separated from the sealing connection with the vent 1111, so that the gas in the grease gun is discharged to the outside atmosphere through the vent 1111 and the exhaust channel 113 in sequence, effectively achieving the exhaust valve 10 In order to realize the exhaust function, the first sealing member 14 or the second sealing member 16 moves downward and compresses the elastic member 13 to accumulate the restoring elastic force. When the exhaust valve 10 needs to be sealed, the valve cap 15 is screwed in the reverse direction and moves upward, so that the extrusion force of the valve cap 15 on the first sealing member 14 or the second sealing member 16 is reduced. At the same time, under the action of the restoring elastic force of the elastic member 13, the first sealing member 14 or the second sealing member 16 moves upward and contacts the vent hole 1111 again for sealing connection, thereby preventing the grease in the grease gun from leaking out through the vent hole 1111, thereby effectively realizing the sealing function of the exhaust valve 10.

[0035] The technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An exhaust valve with good sealing performance, used in a grease gun, characterized in that: include: The valve body is a hollow cavity with two ends open. A partition is provided inside the valve body to divide the valve body into two separate chambers. A vent hole is provided through the partition. A support member, which is a hollow cavity, and the support member is detachably connected to one end of the valve body; an elastic member, which is disposed in the valve body and has one end in contact with and connected to the support member; a sealing member disposed in the valve body and in contact with the elastic member, wherein the sealing member is capable of being in contact and sealing connection with the vent hole; A valve cap is detachably connected to the other end of the valve body opposite to the support member and can be in contact with the sealing member. The valve cap can separate the sealing member from the vent hole.

2. An exhaust valve with good sealing performance according to claim 1, characterized in that: The sealing element adopts a spherical steel ball.

3. The exhaust valve with good sealing performance according to claim 1, characterized in that: The sealing element is a conical sealing cap.

4. An exhaust valve with good sealing performance according to claim 3, characterized in that: The conical sealing cap includes a connecting rod, which is arranged through the elastic member; a sealing cap body integrally formed on one side of the connecting rod, which is conical in shape and can be in contact and sealed connection with the vent hole.

5. The exhaust valve with good sealing performance according to claim 1, characterized in that: One end of the valve body is provided with a first external thread, and the valve body is detachably threadedly connected to the exhaust port of the grease gun through the first external thread.

6. The exhaust valve with good sealing performance according to claim 1, characterized in that: An exhaust passage is provided through the valve body.

7. The exhaust valve with good sealing performance according to claim 1, characterized in that: Internal threads are respectively provided on the inner walls of the two opposite ends of the valve body, and the support member and the valve cap are detachably connected to the valve body through the corresponding internal threads.

8. An exhaust valve with good sealing performance according to claim 7, characterized in that: The support member adopts a headless hollow screw with a through hole penetrating therethrough; the outer side of the support member is provided with a second external thread, and the second external thread and the corresponding internal thread are detachably threadedly connected.

9. The exhaust valve with good sealing performance according to claim 7, characterized in that: The valve bonnet comprises a pressure rod, a threaded rod and a valve bonnet body which are arranged in sequence; the pressure rod can be in contact and connected with the sealing member; the threaded rod and the corresponding internal thread are detachably threadedly connected.

10. An exhaust valve with good sealing performance according to any one of claims 1 to 9, characterized in that: The elastic member is a spring.

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