Claw type valve packing extractor

Abstract

The utility model relates to a claw type valve packing extractor which is provided with a supporting ring, at least three connecting rods are evenly distributed on the bottom face of the supporting ring in the circumferential direction, the upper ends of the connecting rods are movably connected with the bottom face of the supporting ring, and the lower ends of the connecting rods are fixedly connected with claws which are obliquely inserted into waste packing when the connecting rods are folded inwards. The supporting ring is simple in overall structure and convenient to use, and the supporting ring can have various sizes and specifications so as to meet the requirement for the size of an existing filler; the length of the connecting rod can be determined according to the depth of the stuffing box, so that a series of products are formed, and the requirement for replacing various specifications of stuffing is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve maintenance technical field especially a claw formula valve packing extractor. BACKGROUND

[0002] In the complex industrial pipeline system, as the key component of controlling fluid flow, the stability and reliability of valve performance are directly related to the safety and efficiency of the whole production process. In the valve structure, the packing plays a crucial role.

[0003] Valve packing, generally one or more layers of sealing material between the valve stem and the packing box, is used to prevent leakage of fluid, gas or solid particles, and to reduce friction and wear during valve stem movement.

[0004] However, due to wear and tear, the packing must be replaced during each valve maintenance process. After removing the old packing, new packing is installed to ensure good valve sealing performance.

[0005] When removing the old packing, the conventional method is to use a screwdriver to pry it out. However, if the operation is not proper, the screwdriver may scratch the valve stem sealing surface or damage the packing box, which will seriously affect the sealing performance of the valve and also increase the production cost of the valve product. INVENTION CONTENTS

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art, and provide a claw formula valve packing extractor with simple structure and convenient use.

[0007] The technical solution adopted by the utility model to solve the technical problem is: a claw formula valve packing extractor, comprising a support ring, the bottom surface of the support ring is circumferentially evenly distributed with at least three connecting rods, the upper end of the connecting rod is movably connected with the bottom surface of the support ring, and the lower end of the connecting rod is fixedly connected with a claw that is obliquely inserted into the waste packing when the connecting rods are inwardly folded.

[0008] Specifically, the bottom surface of the support ring is circumferentially evenly distributed with four connecting rods, and the claw and the connecting rod are an integral structure.

[0009] Preferably, the included angle between the claw and the connecting rod is 110°-130°.

[0010] To facilitate the claw to better insert into the packing, the cross section of the claw is a triangle composed of one short side and two long sides, the short side of the claw is connected with the connecting rod, and the included angle at the top end of the claw is 15°.

[0011] For convenient operation, the connecting rod upper end and the support ring bottom surface are provided with a connecting assembly, the connecting assembly comprises a connecting seat fixed on the support ring bottom surface, a connecting plate is arranged between the connecting seat and the connecting rod upper end, the connecting plate upper end is hinged with the connecting seat through a pin, and the connecting plate lower end is movably connected with the connecting rod upper end through a pin.

[0012] For firm clamping, the connecting seat and the connecting rod upper end two sides are both provided with a connecting plate.

[0013] The utility model discloses the beneficial effect is: the utility model discloses simple structure, convenient to use, the support ring can have multiple sizes specifications, to cope with the demand of existing filler size, the length of connecting rod can be determined according to the filler depth, thereby forming the serialization product, satisfy the requirement of more specifications filler replacement. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model is further illustrated below in connection with the drawings and implementation.

[0015] Figure 1 It is the structure schematic diagram of the utility model.

[0016] Figure 2 It is Figure 1 The enlarged structure schematic diagram of connecting assembly in A place.

[0017] In the drawing: 1. support ring, 2. connecting rod, 3. hook claw, 4. connecting seat, 5. connecting plate. DETAILED DESCRIPTION

[0018] The utility model is further illustrated below in connection with the drawings and implementation.

[0019] As Figure 1 Shown in the utility model discloses a kind of hook claw type valve filler extractor, with a circular support ring 1, four connecting rods 2 are evenly distributed in the bottom surface of support ring 1, the lower end of each connecting rod 2 is provided with an inwardly inclined hook claw 3, for easy manufacture, the hook claw 3 and connecting rod 2 adopt integrated structure, and the included angle between hook claw 3 and connecting rod 2 is 120 °.

[0020] The cross section of the hook claw 3 is triangular, which is composed of a short side and two long sides. The short side of the triangle is connected to the bottom end of the connecting rod 2, one long side forms the bottom surface of the hook claw 3, and the other long side forms the upper plane of the hook claw 3. The included angle of the top end of the triangle formed by the intersection of the two long sides is 15 °. The relatively sharp top end of the hook claw 3 and the upper plane of the hook claw 3 can make the hook claw 3 more easily inserted into the waste filler.

[0021] The connecting assembly is arranged between the upper end of the connecting rod 2 and the bottom surface of the supporting ring 1, and the upper end of the connecting rod 2 is movably connected with the bottom surface of the supporting ring 1 through the connecting assembly. Figure 2 As shown in the figure, specifically, the connecting assembly comprises a connecting seat 4, two connecting plates 5 and a pin, the connecting seat 4 is fixed on the bottom surface of the supporting ring 1 or is integrally formed with the supporting ring 1, the two connecting plates 5 are arranged on the two sides of the connecting seat 4 respectively, the upper end of the connecting plate 5 is hingedly connected with the connecting seat 4 through the pin, and the lower end of the connecting plate 5 is movably connected with the upper end of the connecting rod 2 through the pin.

[0022] When the packing needs to be replaced without removing the valve stem of the valve, the inner hole of the supporting ring 1 can be sleeved on the valve stem of the valve, the opening of the hook claw 3 is adjusted through the connecting assembly, the operator holds the middle part of the connecting rod 2 to fold the connecting rod 2 inward, the hook claw 3 is inserted into the old packing, when the insertion depth is appropriate, the whole extractor is lifted upward and rotated, and the old packing is extracted by the hook claw 3.

[0023] The utility model discloses simple whole structure, easy to process, the supporting ring 1 can have multiple sizes of specifications, to cope with the demand of existing packing size, the length of the connecting rod 2 can be determined according to the packing depth, thereby forming a series of products, and meeting the requirement of replacing packing of various specifications.

[0024] Through the above description, the related staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A hook type valve packing extractor having a support ring (1) characterised in that: The support ring (1) is provided with at least three connecting rods (2) on the bottom surface, the upper end of the connecting rod (2) is movably connected with the bottom surface of the support ring (1), and the lower end of the connecting rod (2) is fixedly connected with a hook claw (3) which is inserted into the waste filler when the connecting rod (2) is inwardly folded.

2. The hook claw type valve packing extractor according to claim 1, wherein: The support ring (1) is provided with four connecting rods (2) on the bottom surface, and the hook claw (3) is an integral structure with the connecting rod (2).

3. The hook claw type valve packing extractor according to claim 2, wherein: The included angle between the hook claw (3) and the connecting rod (2) is 110-130 degrees.

4. The hook claw type valve packing extractor according to claim 3, wherein: The cross section of the hook claw (3) is a triangle composed of a short side and two long sides, the short side of the hook claw (3) is connected with the connecting rod (2), and the included angle at the top end of the hook claw (3) is 15 degrees.

5. The hook claw type valve packing extractor according to claim 1, wherein: The upper end of the connecting rod (2) is provided with a connecting assembly with the bottom surface of the support ring (1), the connecting assembly comprises a connecting seat (4) fixed on the bottom surface of the support ring (1), a connecting plate (5) is arranged between the connecting seat (4) and the end of the connecting rod (2), the upper end of the connecting plate (5) is hingedly connected with the connecting seat (4) through a pin, and the lower end of the connecting plate (5) is movably connected with the upper end of the connecting rod (2) through a pin.

6. The hook claw type valve packing extractor according to claim 5, wherein: The connecting seat (4) and the upper end of the connecting rod (2) are provided with the connecting plate (5) on both sides.

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