Stop valve core

Abstract

The utility model provides a stop valve element, and belongs to the field of hydraulic parts. The utility model relates to a stop valve, in particular to a stop valve, which solves the problems that a hand wheel is screwed to enable a valve rod to move up and down to control the opening and closing of the stop valve, and the hand wheel is not provided with a locking mechanism in the use process, so that the valve is possibly loosened due to mistaken touch and misoperation, and the medium flows out and leaks out, and comprises the hand wheel, the valve rod, a gland and a valve plate, the pressing device is characterized in that a supporting seat with a supporting function is arranged between the hand wheel and the gland, slidable pressing parts are arranged on the two sides of the supporting seat, buckles are arranged at the upper ends of the pressing parts, and grooves used for being matched with the pressing parts are formed in the lower end of the hand wheel. A clamping groove used for being connected with the buckle in a clamped mode is formed in the inner wall of the groove.

Description

Technical Field

[0001] The utility model belongs to the field of hydraulic components, and particularly relates to a stop valve core. Background Art

[0002] The stop valve, also known as the gate valve, is one of the most widely used valves. The stop valve usually controls the opening and closing of the valve by turning the handwheel to move the valve stem up and down. During use, since the handwheel does not have a locking mechanism, the valve may become loose due to accidental touch or misoperation, resulting in the outflow and leakage of the medium. Summary of the invention

[0003] The utility model aims to provide a stop valve core in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a stop valve core, including a handwheel, a valve stem, a pressure cover and a valve plate, characterized in that a support seat for supporting the handwheel and the pressure cover is arranged between the handwheel and the pressure cover, slidable pressing parts are arranged on both sides of the support seat, a buckle is arranged on the upper end of the pressing part, a groove for cooperating with the pressing part is provided at the lower end of the handwheel, and a clamping groove for mutual clamping with the buckle is provided on the inner wall of the groove.

[0005] In the above-mentioned stop valve core, an elastic element with elastic reset function is arranged between the hand wheel and the support seat, one end of the elastic element is connected to the groove, and the other end is connected to the upper end of the support seat.

[0006] In the above-mentioned stop valve core, a spring is arranged inside the support seat, and the spring is connected to the pressing part.

[0007] In the above-mentioned stop valve core, a baffle for limiting position is arranged on the valve stem, and a stretchable soft material sealing ring is arranged at the lower end of the baffle.

[0008] In the above-mentioned stop valve core, a receiving chamber for preventing the sealing ring is arranged at the lower end of the gland, and one end of the sealing ring is connected to the baffle, and the other end is connected to the bottom of the receiving chamber.

[0009] Compared with the prior art, the stop valve core of the present invention locks the hand wheel by the cooperation between the buckle and the slot, effectively preventing the problem of valve leakage caused by misoperation. A retractable sealing ring is arranged on the valve stem to enhance the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a cross-sectional view of the stop valve core.

[0011] In the figure, 1, hand wheel; 2, valve stem; 3, pressure cover; 4, valve plate; 5, support seat; 6, pressing part; 7, buckle; 8, groove; 9, slot; 10, elastic element; 11, spring; 12, baffle; 13, sealing ring; 14, storage chamber. DETAILED DESCRIPTION

[0012] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0013] like Figure 1 As shown, the stop valve core comprises a handwheel 1, a valve stem 2, a pressure cover 3 and a valve plate 4. A support seat 5 for supporting the handwheel 1 and the pressure cover 3 is arranged between the handwheel 1 and the pressure cover 3. Slidable pressing parts 6 are arranged on both sides of the support seat 5. A buckle 7 is arranged on the upper end of the pressing part 6. A groove 8 for cooperating with the pressing part 6 is provided at the lower end of the handwheel 1. A clamping groove 9 for clamping with the buckle 7 is provided on the inner wall of the groove 8.

[0014] To further elaborate, an elastic element 10 with an elastic reset function is provided between the hand wheel 1 and the support seat 5 , and one end of the elastic element 10 is connected to the groove 8 , and the other end is connected to the upper end of the support seat 5 .

[0015] To be more specific, a spring 11 is disposed inside the support seat 5 , and the spring 11 is connected to the pressing portion 6 .

[0016] To be more specific, a baffle 12 for limiting position is disposed on the valve stem 2 , and a stretchable soft material sealing ring 13 is disposed at the lower end of the baffle 12 .

[0017] To be more specific, a receiving chamber 14 for a sealing ring 13 is disposed at the lower end of the gland 3 . One end of the sealing ring 13 is connected to the baffle 12 , and the other end is connected to the bottom of the receiving chamber 14 .

[0018] When closing the valve, tighten the hand wheel 1 to make the push part 6 enter the groove 8, and at the same time, the buckle 7 is elastically reset by the spring 11 and is engaged with the groove 9. At the same time, the valve stem 2 drives the baffle 12 to compress the sealing ring 13 downward, so that the length of the sealing ring 13 is reduced and the diameter is increased, thereby filling the receiving cavity 14 and blocking the gap between the valve stem 2 and the receiving cavity 14;

[0019] When opening the valve, the pressing part 6 is pressed inward to separate the buckle 7 from the slot 9. At this time, the hand wheel 1 is turned to drive the valve stem 2 to move upward.

[0020] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0021] Although this article uses more terms such as 1, hand wheel 1; 2, valve stem 2; 3, gland 3; 4, valve plate 4; 5, support seat 5; 6, push part 6; 7, buckle 7; 8, groove 8; 9, slot 9; 10, elastic element 10; 11, spring 11; 12, baffle 12; 13, sealing ring 13; 14, storage chamber 14, etc., it does not exclude the possibility of using other terms. The use of these terms is only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A stop valve core, comprising a hand wheel (1), a valve stem (2), a gland (3) and a valve plate (4), characterized in that: A support seat (5) is provided between the hand wheel (1) and the pressure cover (3) for supporting the hand wheel (1). Slidable pressing parts (6) are provided on both sides of the support seat (5). A buckle (7) is provided at the upper end of the pressing part (6). A groove (8) for cooperating with the pressing part (6) is provided at the lower end of the hand wheel (1). A clamping groove (9) for clamping with the buckle (7) is provided on the inner wall of the groove (8).

2. A stop valve core according to claim 1, characterized in that: An elastic element (10) having an elastic reset function is arranged between the hand wheel (1) and the support seat (5); one end of the elastic element (10) is connected to the groove (8), and the other end is connected to the upper end of the support seat (5).

3. A stop valve core according to claim 1, characterized in that: A spring (11) is arranged inside the support seat (5), and the spring (11) is connected to the pressing portion (6).

4. A stop valve core according to claim 1, characterized in that: The valve stem (2) is provided with a baffle (12) for limiting position, and the lower end of the baffle (12) is provided with a stretchable soft material sealing ring (13).

5. A stop valve core according to claim 1, characterized in that: The lower end of the gland (3) is provided with a receiving chamber (14) for preventing the sealing ring (13) from leaking; one end of the sealing ring (13) is connected to the baffle (12), and the other end is connected to the bottom of the receiving chamber (14).

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