Gas meter with vertical shaft rotary sealing mechanism

Abstract

The utility model discloses a gas meter with a vertical shaft rotary sealing mechanism, which comprises a gas meter body, a vertical shaft body is arranged in a vertical shaft cavity of the gas meter body, a sealing piece is arranged between the vertical shaft body and the vertical shaft cavity, and the sealing piece comprises a sealing sleeve and a vertical shaft sleeve which are sleeved in an inner ring of the vertical shaft cavity. The sealing sleeve and the vertical shaft sleeve are arranged on the outer ring of the vertical shaft body in a sleeving mode, a first annular groove is formed in the side, corresponding to the vertical shaft sleeve, of the sealing sleeve, and an annular sealing inserting piece is fixedly connected to the side, corresponding to the sealing sleeve, of the vertical shaft sleeve. The first annular groove formed in the sealing sleeve forms the two side walls which are the first outer side wall and the first inner side wall respectively, the first outer side wall expands towards the side wall of the vertical shaft cavity, the first inner side wall expands towards the side wall of the vertical shaft body, and the vertical shaft cavity and the vertical shaft body are matched in an inserted mode through the annular sealing inserting piece and the first annular groove. The first outer side wall is tightly attached to the vertical shaft cavity, the first inner side wall is tightly attached to the vertical shaft body, air leakage is prevented, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas meter accessories, in particular to a gas meter with a vertical shaft rotating sealing mechanism. Background Art

[0002] A diaphragm gas meter is a type of gas meter used in gas pipelines to measure gas usage. Metering is achieved through a mechanical roller, which converts the reciprocating motion of the diaphragm caused by the gas passing through it into the rotation of a crank. This rotation drives the drive and counter wheels, which in turn rotate the counter. Each reciprocating motion of the diaphragm releases a certain amount of gas, and the roller eventually rotates through one counting unit, creating a rotating metering display.

[0003] Currently, the traditional labyrinth seal structure for vertical shafts is to create a small tortuous gap on the retaining ring between the vertical shaft and the bearing seat, thus forming a labyrinth structure and achieving a sealing effect. However, the actual problem is that as the vertical shaft rotates, a large amount of dust from under the vertical shaft can easily enter the labyrinth structure, seriously affecting the sealing effect of the seal structure. Utility Model Content

[0004] The present invention aims to solve the problems in the prior art and proposes the following technical solutions:

[0005] A gas meter with a vertical shaft rotating sealing mechanism includes a gas meter body, a vertical shaft body is arranged in the vertical shaft cavity of the gas meter body, a seal is installed between the vertical shaft body and the vertical shaft cavity, the seal includes a sealing sleeve and a vertical shaft sleeve arranged in the inner ring of the vertical shaft cavity, and the sealing sleeve and the vertical shaft sleeve are both arranged on the outer ring of the vertical shaft body, a first annular groove is provided on the side of the sealing sleeve corresponding to the vertical shaft sleeve, an annular sealing plug-in is fixedly connected to the side of the vertical shaft sleeve corresponding to the sealing sleeve, and the annular sealing plug-in is plugged into the first annular groove.

[0006] As a preferred embodiment of the above technical solution, the width from the inner diameter to the outer diameter of the sealing sleeve is the same as the width from the inner diameter to the outer diameter of the vertical shaft sleeve.

[0007] As a preferred embodiment of the above technical solution, the width from the inner diameter to the outer diameter of the first annular groove is smaller than the width from the inner diameter to the outer diameter of the annular sealing plug-in.

[0008] As a preferred embodiment of the above technical solution, the sealing sleeve is provided with a second annular groove, the side wall of the second annular groove is fixedly connected with a boss, the boss is fixedly installed with a leak-proof ring, and the leak-proof ring is against the vertical shaft body.

[0009] As a preferred embodiment of the above technical solution, a third annular groove is formed on a side of the vertical shaft sleeve away from the sealing sleeve, and a plurality of reinforcing plates are fixedly installed in the third annular groove.

[0010] The beneficial effects of the utility model are:

[0011] 1. The first annular groove of the sealing sleeve of the present invention forms two side walls, namely a first outer wall and a first inner wall. The first outer wall expands toward the side wall of the vertical shaft cavity, and the first inner wall expands toward the side wall of the vertical shaft body. The annular sealing plug is plugged into the first annular groove so that the first outer wall fits tightly against the vertical shaft cavity and the first inner wall fits tightly against the vertical shaft body, thereby preventing air leakage and improving the sealing effect.

[0012] 2. The third annular groove of the vertical shaft sleeve of the utility model forms two side walls, namely the second inner side wall and the second outer side wall. A plurality of reinforcing plates are arranged in a circular array with the center of the vertical shaft sleeve as the axis center, and are fixedly connected to the second inner side wall and the second outer side wall to increase the toughness of the second inner side wall and the second outer side wall, so as to prevent the vertical shaft sleeve from being deformed due to the long-term rotation of the vertical shaft body, thereby affecting the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure shows a schematic structural diagram of a gas meter with a vertical shaft rotating sealing mechanism in an embodiment;

[0014] Figure 2 Shown is Figure 1 A schematic diagram of the structure at point A in the figure.

[0015] Description of reference numerals:

[0016] 1. Gas meter body; 2. Vertical shaft body; 3. Sealing sleeve; 31. First annular groove; 32. First outer side wall; 33. First inner side wall; 34. Second annular groove; 35. Boss; 36. Leak-proof ring; 4. Vertical shaft sleeve; 41. Annular sealing plug-in; 42. Third annular groove; 43. Second inner side wall; 44. Second outer side wall; 45. Reinforcement plate; 46. Retaining ring. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0018] Example 1

[0019] like Figure 1 and Figure 2As shown, the gas meter with vertical shaft rotating sealing mechanism, including the gas meter body 1, the vertical shaft cavity of the gas meter body 1 is provided with a vertical shaft body 2, and a sealing element is installed between the vertical shaft body 2 and the vertical shaft cavity. The sealing element includes a sealing sleeve 3 and a vertical shaft sleeve 4 sleeved in the inner ring of the vertical shaft cavity, and the sealing sleeve 3 and the vertical shaft sleeve 4 are both sleeved on the outer ring of the vertical shaft body 2. A first annular groove 31 is formed on the side of the sealing sleeve 3 corresponding to the vertical shaft sleeve 4, and an annular sealing insert 41 is fixedly connected to the side of the vertical shaft sleeve 4 corresponding to the sealing sleeve 3. The annular sealing insert 41 is inserted and connected with the first annular groove 31.

[0020] It should be noted that the sealing sleeve 3 is made of silica gel material, but not limited to, so that the sealing sleeve 3 is not only durable, but also has small shrinkage, which can prevent gas leakage from the vertical shaft sleeve 4. The first annular groove 31 formed on the sealing sleeve 3 forms two side walls, which are a first outer side wall 32 and a first inner side wall 33. The first outer side wall 32 expands towards the side wall of the vertical shaft cavity, and the first inner side wall 33 expands towards the side wall of the vertical shaft body 2. By inserting and connecting the annular sealing insert 41 with the first annular groove 31, the first outer side wall 32 is tightly attached to the vertical shaft cavity, and the first inner side wall 33 is tightly attached to the vertical shaft body 2, preventing gas leakage and improving the sealing effect.

[0021] As shown in Figure 2 The width from the inner diameter to the outer diameter of the sealing sleeve 3 is the same as the width from the inner diameter to the outer diameter of the vertical shaft sleeve 4.

[0022] As shown in Figure 2 The width from the inner diameter to the outer diameter of the first annular groove 31 is smaller than the width from the inner diameter to the outer diameter of the annular sealing insert 41.

[0023] It should be noted that since the sealing sleeve 3 is elastic and has expansion property, when the annular sealing insert 41 is inserted into the first annular groove 31, the first outer side wall 32 and the first inner side wall 33 will expand away from the side wall of the annular sealing insert 41, thereby increasing the air tightness between the vertical shaft body 2 and the vertical shaft cavity.

[0024] Example 2

[0025] As shown in Figure 1 and Figure 2As shown, a gas meter with a vertical shaft rotating sealing mechanism, compared with Example 1, the seal of this embodiment includes a sealing sleeve 3 and a vertical shaft sleeve 4 sleeved in the inner ring of the vertical shaft cavity, and the sealing sleeve 3 and the vertical shaft sleeve 4 are both sleeved on the outer ring of the vertical shaft body 2, a first annular groove 31 is opened on the side of the sealing sleeve 3 corresponding to the vertical shaft sleeve 4, and an annular sealing plug-in 41 is fixedly connected to the side of the vertical shaft sleeve 4 corresponding to the sealing sleeve 3, and the annular sealing plug-in 41 is plugged into the first annular groove 31. The sealing sleeve 3 is made of, but not limited to, silicone material, so that the sealing sleeve 3 is not only durable, but also has a small shrinkage change, which can prevent air leakage from the vertical shaft sleeve 4. The first annular groove 31 opened by the sealing sleeve 3 forms two side walls, namely a first outer wall 32 and a first inner wall 33. The first outer wall 32 expands toward the side wall of the vertical shaft cavity, and the first inner wall 33 expands toward the side wall of the vertical shaft body 2. The annular sealing plug-in 41 is plugged into the first annular groove 31 so that the first outer wall 32 will fit tightly with the vertical shaft cavity, and the first inner wall 33 will fit tightly with the vertical shaft body 2, preventing air leakage and improving the sealing effect. A third annular groove 42 is opened on the side of the vertical shaft sleeve 4 away from the sealing sleeve 3, and a plurality of reinforcing plates 45 are fixedly installed in the third annular groove 42.

[0026] It should be noted that the third annular groove 42 opened in the vertical shaft sleeve 4 forms two side walls, namely the second inner wall 43 and the second outer wall 44. A number of reinforcing plates 45 are arranged in a circular array with the center of the vertical shaft sleeve 4 as the axis center, and are fixedly connected to the second inner wall 43 and the second outer wall 44 to increase the toughness of the second inner wall 43 and the second outer wall 44 to prevent the vertical shaft sleeve 4 from being deformed due to the long-term rotation of the vertical shaft body 2, thereby affecting the sealing effect. At the same time, the second outer wall 44 is provided with an integral retaining ring 46, which is located outside the vertical shaft cavity and contacts the shell of the gas meter body 1.

[0027] like Figure 2 As shown, the sealing sleeve 3 is provided with a second annular groove 34, the side wall of the second annular groove 34 is fixedly connected with a boss 35, the boss 35 is fixedly installed with a leak-proof ring 36, the leak-proof ring 36 is against the vertical shaft body 2, and the cross-section of the leak-proof ring 36 is preferably circular or rectangular.

[0028] It should be noted that the initial state of the end of the principle boss 35 of the leak-proof ring 36 is located outside the second annular groove 34. When the vertical shaft body 2 passes through the sealing sleeve 3, the leak-proof ring 36 is deformed, thereby increasing the contact surface with the vertical shaft body 2 and improving the sealing effect.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A gas meter with a vertical shaft rotating sealing mechanism, comprising a gas meter body (1), a vertical shaft body (2) disposed in a vertical shaft cavity of the gas meter body (1), a sealing member installed between the vertical shaft body (2) and the vertical shaft cavity, characterized in that: The sealing member comprises a sealing sleeve (3) and a vertical shaft sleeve (4) sleeved in the inner ring of the vertical shaft cavity, and the sealing sleeve (3) and the vertical shaft sleeve (4) are both sleeved on the outer ring of the vertical shaft body (2), a first annular groove (31) is provided on one side of the sealing sleeve (3) corresponding to the vertical shaft sleeve (4), and an annular sealing plug-in (41) is fixedly connected to one side of the vertical shaft sleeve (4) corresponding to the sealing sleeve (3), and the annular sealing plug-in (41) is plugged into and matched with the first annular groove (31).

2. The gas meter with a vertical shaft rotating sealing mechanism according to claim 1, characterized in that: The width from the inner diameter to the outer diameter of the sealing sleeve (3) is the same as the width from the inner diameter to the outer diameter of the vertical shaft sleeve (4).

3. The gas meter with a vertical shaft rotating sealing mechanism according to claim 2, characterized in that: The width of the first annular groove (31) from the inner diameter to the outer diameter is smaller than the width of the annular sealing insert (41) from the inner diameter to the outer diameter.

4. The gas meter with a vertical shaft rotating sealing mechanism according to claim 2, characterized in that: The sealing sleeve (3) is provided with a second annular groove (34), the side wall of the second annular groove (34) is fixedly connected with a boss (35), the boss (35) is fixedly mounted with a leak-proof ring (36), and the leak-proof ring (36) abuts against the vertical shaft body (2).

5. The gas meter with a vertical shaft rotating sealing mechanism according to claim 1, characterized in that: A third annular groove (42) is provided on the side of the vertical shaft sleeve (4) away from the sealing sleeve (3), and a plurality of reinforcing plates (45) are fixedly installed in the third annular groove (42).

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