Air valve seat ring drawing tool

Abstract

An air valve comprises an air cylinder head and an air valve seat ring installed in the air cylinder head, and the air valve seat ring drawing tool is characterized in that the air valve seat ring drawing tool comprises a bolt with a bolt head extending downwards into an inner hole of the air valve seat ring; the locking block is provided with two locking pieces which are symmetrically arranged in a clearance mode, the two locking pieces which are symmetrically arranged are arranged on a stud of the bolt in a sleeving mode, a locking sleeve is arranged between an inner hole of each locking piece and the stud in an inserted mode, and the outer ring of each locking piece is provided with a protrusion matched with a chamfer at the lower end of the inner hole of the air valve seat ring; the second gasket is arranged on a stud of the bolt in a sleeving mode and located above the air cylinder head; and the driving piece is arranged on the stud of the bolt in a sleeving mode and located above the second gasket, and the top face of the driving piece is fixedly connected to the stud of the bolt through a nut. The air valve seat ring and the air cylinder head can be separated conveniently, the structure is simple, and manufacturing and using are easy.

Description

Technical Field

[0001] This utility model relates to the field of valve seat disassembly technology, specifically to a valve seat puller tool. Background Technology

[0002] Valve seat rings are replaceable valve seats that are mounted on the cylinder block of side-valve engines and on the cylinder head or cylinder headless block of overhead valve engines. Valve seat rings need to be replaced after a period of use, but because they are installed inside the cylinder head, and their top surface is usually flush with the top surface of the cylinder head, they cannot be removed using clamping tools, making replacement very difficult. Utility Model Content

[0003] In view of the problems and shortcomings of the existing technology, this utility model provides a valve seat puller.

[0004] The technical solution of this utility model is as follows:

[0005] A valve seat puller, wherein the valve includes a cylinder head and a valve seat installed inside the cylinder head, and the valve seat puller includes:

[0006] A bolt, with its head pointing downwards, extends into the inner hole of the valve seat ring;

[0007] The locking block has two symmetrically spaced locking elements, which are sleeved on the studs of the bolt. A locking sleeve is inserted between the inner hole of the locking element and the stud. The outer ring of the locking element has a protrusion that is chamfered to fit the lower end of the inner hole of the valve seat ring.

[0008] The second gasket is fitted onto the stud of the bolt and is located above the cylinder head;

[0009] The driving component is fitted onto the stud of the bolt and located above the second washer. Its top surface is fixedly connected to the stud of the bolt by a nut.

[0010] In use, first, insert the bolt head downwards into the inner hole of the valve seat ring. Then, fit the locking block onto the stud. Specifically, the two locking parts of the locking block are installed separately. Due to the gap between the two locking parts, the locking parts can be close to the stud, allowing the protrusion on them to fit into the chamfer of the lower valve seat ring's inner hole without interfering with it. Then, by inserting the locking sleeve, the locking parts are moved radially outwards, causing the protrusion to engage with the chamfer at the lower end of the valve seat ring's inner hole, and the locking parts are fixedly connected to the stud without sliding up or down. Afterwards, install the second washer and the drive component, and secure the drive component to the bolt's stud with a nut. Finally, a power source, such as a hydraulic jack, is used to push the drive component upward, which in turn moves the bolt upward. The bolt then moves the locking block, which is fixedly connected to it, upward. This causes the valve seat ring to move upward through the protrusion on the locking component. Once the valve seat ring has moved upward a certain distance, it can be pulled out by clamping the upper part with other tools, thereby separating the valve seat ring from the cylinder head and completing the disassembly operation.

[0011] Specifically, in order to facilitate the engagement of the protrusion with the chamfer of the valve seat inner hole, the protrusion is a tapered protrusion with the tip pointing outward.

[0012] To facilitate the insertion of the locking element into the bolt stud, and to allow its protrusion to fit beneath the valve seat, the locking block, when the bolt moves upward, can move the valve seat upward via the protrusion, thereby moving the valve seat upward and placing it in a position that is easy to disassemble. The locking element is designed as a ring, and the distance D from the center of the inner hole to the mating surface is not less than the radial dimension of the protrusion along the locking element.

[0013] The inner diameter of the second gasket is larger than the outer diameter of the valve seat ring. This is to prevent interference between the second gasket and the valve seat ring, and to facilitate the quick removal of the valve seat ring from the cylinder head.

[0014] To improve the stability of the puller connection of this utility model, a first washer is also included, which is sleeved on the stud of the bolt and located below the locking block. Furthermore, a third washer is also included, which is sleeved on the stud of the bolt and located between the drive member and the nut.

[0015] The driving component is a drive rod connected to a hydraulic jack. In use, the hydraulic jack lifts the driving component upwards, thereby causing the bolt to pull the locking block sleeved on it upwards. Specifically, other power sources can also be used to drive the driving component upwards, such as electric or mechanical equipment, etc., without limitation.

[0016] The beneficial effects of this utility model are:

[0017] By setting a locking block with a protrusion on the outer ring that engages with the chamfer at the bottom of the inner hole of the valve seat ring, the valve seat ring is driven to move upward. The locking block is connected to the driving component of the jack by bolts, which serves as the power source to pull the locking block upward, facilitating the separation of the valve seat ring from the cylinder head. Furthermore, the structure is simple, easy to manufacture, and easy to use. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of an embodiment;

[0019] Figure 2 This is a schematic diagram of the locking block, where (a) is the front view and (b) is the top view;

[0020] 10. Cylinder head; 20. Seat ring; 1. Bolt; 2. First washer; 3. Locking block; 31. Locking element; 311. Protrusion; 4. Locking sleeve; 5. Second washer; 6. Drive element; 7. Third washer; 8. Nut. Detailed Implementation

[0021] The technical means adopted to achieve the intended purpose of this utility model will be further described below with reference to the accompanying drawings of the embodiments of this utility model.

[0022] See Figure 1 and Figure 2 As shown, the air valve includes a cylinder head 10 and an air valve seat 20 installed inside the cylinder head 10. The air valve seat puller includes:

[0023] Bolt 1, with its head facing downwards, extends into the inner hole of the valve seat ring 20;

[0024] The locking block 3 has two symmetrically spaced locking elements 31. The two symmetrically spaced locking elements 31 are sleeved on the stud of the bolt 1, and a locking sleeve 4 is inserted between the inner hole of the locking element 31 and the stud. The outer ring of the locking element 31 is provided with a protrusion 311 that is chamfered to the lower end of the inner hole of the valve seat ring 20.

[0025] The second washer 5 is fitted onto the stud of the bolt 1 and is located above the cylinder head 10;

[0026] The driving component 6 is sleeved on the stud of the bolt 1 and located above the second washer 5. Its top surface is fixedly connected to the stud of the bolt 1 by the nut 8.

[0027] In use, first, insert bolt 1 head-down into the inner hole of valve seat 20, then fit locking block 3 onto stud. Specifically, the two locking parts 31 of locking block 3 are installed separately. Due to the gap between the two locking parts 31, locking parts 31 can be close to the stud, so that the protrusion 311 on it can be inserted into the chamfer of the inner hole of valve seat 20 without interfering with it. Then, by inserting locking sleeve 4, locking parts 31 are moved radially outward, so that the protrusion 311 engages with the chamfer at the lower end of the inner hole of valve seat 20, and locking parts 31 are fixedly connected to stud without sliding up and down. After that, install the second washer 5 and the driving part 6, and fix the driving part 6 to the stud of bolt 1 with nut 8. Finally, by using a power source, such as a hydraulic jack, the drive component 6 is pushed upward, which in turn moves the bolt 1 upward. The bolt 1 then moves the locking block 3, which is fixedly connected to it, upward. This causes the valve seat ring 20 to move upward through the protrusion 311 on the locking component 31. After the valve seat ring 20 has moved upward a certain distance, it can be pulled out by clamping the upper part with other tools, thereby separating the valve seat ring 20 from the cylinder head 10 and realizing the disassembly operation.

[0028] See Figure 2 Specifically, in order to facilitate the engagement of the protrusion 311 with the chamfer of the inner hole of the valve seat ring 20, the protrusion 311 is a tapered protrusion 311 with the tip facing outward.

[0029] To facilitate the insertion of the locking element 31 into the stud of the bolt 1, and to allow its protrusion 311 to be positioned below the valve seat ring 20, the locking block 3, when moving the bolt 1 upwards, can drive the valve seat ring 20 upwards via the protrusion 311, thereby moving the valve seat upwards and placing it in a position that is easy to disassemble. The locking element 31 is designed as an annular shape, and the distance D from the center of the inner hole to the mating surface is not less than the radial dimension of the protrusion 311 along the locking element 31.

[0030] See Figure 1 The inner diameter of the second gasket 5 is larger than the outer diameter of the valve seat 20. This is to prevent the second gasket 5 from interfering with the valve seat 20 and to facilitate the quick removal of the valve seat 20 from the cylinder head 10.

[0031] See Figure 1 To improve the stability of the puller connection of this utility model, a first washer 2 is also included, which is sleeved on the stud of the bolt 1 and located below the locking block 3. Furthermore, a third washer 7 is also included, which is sleeved on the stud of the bolt 1 and located between the driving member 6 and the nut 8.

[0032] The driving component 6 is the driving rod of a hydraulic jack. In use, the hydraulic jack lifts the driving component 6 upward, thereby causing the bolt 1 to pull the locking block 3 sleeved on it upward. Specifically, other power sources can also be used to drive the driving component 6 upward, such as electric or mechanical equipment, etc., which are not limited here.

[0033] The above description represents a preferred embodiment of the present invention. However, the present invention is not limited to the above-described embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, all variations, equivalent substitutions, and improvements made without departing from the concept of the present invention should be included within the protection scope of the present invention.

Claims

1. A valve seat puller, wherein the valve includes a cylinder head (10) and a valve seat (20) installed within the cylinder head, characterized in that, The valve seat puller includes: Bolt (1), with its head facing downwards, extends into the inner hole of the valve seat (20); The locking block (3) has two locking members (31) with symmetrical gaps. The two symmetrically arranged locking members (31) are sleeved on the stud of the bolt (1), and a locking sleeve (4) is inserted between its inner hole and the stud. The outer ring of the locking member (31) is provided with a protrusion (311) that is chamfered to the lower end of the inner hole of the valve seat ring (20). The second washer (5) is fitted onto the stud of the bolt (1) and is located above the cylinder head (10); The drive component (6) is sleeved on the stud of the bolt (1) and located above the second washer (5). Its top surface is fixedly connected to the stud of the bolt (1) by a nut (8).

2. The valve seat puller according to claim 1, characterized in that, The protrusion (311) is a conical protrusion (311) with its tip pointing outward.

3. The valve seat (20) pulling tool according to claim 2, characterized in that, The locking member (31) is annular, and the distance D from the center of the inner hole to the mating surface is not less than the radial dimension of the protrusion (311) along the locking member.

4. The valve seat puller according to any one of claims 1-3, characterized in that, The inner diameter of the second gasket (5) is larger than the outer diameter of the valve seat (20).

5. The valve seat (20) pulling tool according to claim 4, characterized in that, It also includes a first washer (2), which is fitted onto the stud of the bolt (1) and located below the locking block (3).

6. The valve seat (20) pulling tool according to claim 4, characterized in that, It also includes a third washer (7), which is fitted onto the stud of the bolt (1) and located between the drive (6) and the nut (8).

7. The valve seat (20) pulling tool according to claim 4, characterized in that, The driving component (6) is a driving rod connected to the hydraulic jack.

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