Elastic seat seal signal gate valve

Abstract

The utility model relates to the field of signal gate valves, in particular to an elastic seat seal signal gate valve. The technical problem to be solved by the utility model is to provide the elastic seat seal signal gate valve which can intuitively know the opening and closing states of the valve, prevent mistaken touch and over-torque operation of an operator, prolong the service life of the valve and improve the control accuracy of the valve. An elastic seat seal signal gate valve comprises a valve body, a valve cover, a top cover, a valve rod, a hand wheel, a signal indicating device, a shell, a fixing plate, a worm gear, an indicating dial, a protective cover, a connecting shaft and an indicating pointer. The utility model achieves the effects of intuitively knowing the opening and closing states of the valve, preventing mistaken touch and over-torque operation of operators, prolonging the service life of the valve and improving the control accuracy.

Description

TECHNICAL FIELD

[0001] The utility model relates to signal gate valve field especially relates to a kind of elastic seat seal signal gate valves. BACKGROUND

[0002] Valve is used to open and close pipeline, control flow direction, adjust and control the parameter of pipeline accessory for conveying medium, valve for fluid control system, from the simplest stop valve to the various valves used in extremely complex automatic control system, its variety and specification are quite numerous, gate valve is one of many pipeline valves, mainly used to control the forced stop flow of liquid medium in pipeline, is widely applied, the opening and closing member of gate valve is gate plate, the movement direction of gate plate is perpendicular to fluid direction, gate valve can only be fully opened and closed, cannot be adjusted and throttled.

[0003] In some working conditions, gate valve needs to provide signal output device, to perceive the opening and closing state of valve in time, prevent operator from damaging valve by over-torque operation, while if operator rotates hand wheel unintentionally to make gate valve not fully open state in use process, on-site management personnel cannot discover and dispose in time, so as to cause fire safety hidden danger;Therefore, it is urgent to develop a kind of elastic seat seal signal gate valve, which can intuitively understand the opening and closing state of valve, prevent operator from misoperation and over-torque operation, improve valve service life and control accuracy. UTILITY MODEL CONTENTS

[0004] The utility model discloses in order to overcome the shortcoming that gate valve cannot visually observe the opening and closing state of valve, and operator misoperation and over-torque operation damage valve, and the technical problem to be solved by the utility model is to provide a kind of elastic seat seal signal gate valve, which can intuitively understand the opening and closing state of valve, prevent operator from misoperation and over-torque operation, improve valve service life and control accuracy.

[0005] The utility model is achieved by the following specific technical means:

[0006] A kind of elastic seat seal signal gate valve, including valve body;Fixedly installed on the upper end of valve body and has valve cover;Top cover is fixedly installed on the upper end of valve cover;Valve stem is rotationally arranged on the valve cover;The lower end of valve stem is connected with the gate plate for controlling the opening and closing of valve;The upper end of valve stem is connected with hand wheel for controlling the rotation of valve stem;

[0007] The signal indicating device is fixedly installed on the upper end of the top cover and used for displaying the opening and closing state of the valve.

[0008] Further, the indication disc is provided with a scale on the side facing the protective cover, which is used for cooperating with the indicating needle to indicate the opening and closing state of the valve, so that the operator can intuitively understand.

[0009] Further, the protective cover is made of transparent glass, which is convenient for the operator to see the indicating needle through the protective cover.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] The utility model reaches the effect that the opening and closing state of the valve is intuitively understood, the operator is prevented from being mistaken and over-torque operation, and the service life of the valve and the control accuracy are improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a front view structural schematic drawing of the utility model.

[0013] Figure 2 It is a local structure schematic drawing of the utility model.

[0014] Figure 3 It is a first kind of sectional view structural schematic drawing of the signal indicating device of the utility model.

[0015] Figure 4 It is a second kind of sectional view structural schematic drawing of the signal indicating device of the utility model.

[0016] The marks in the drawings are as follows: 1-valve body, 2-valve cover, 3-top cover, 4-valve rod, 5-hand wheel, 6-signal indicating device, 61-housing, 62-fixed plate, 63-worm wheel, 64-indication disc, 65-protective cover, 66-connecting shaft, 67-indicating needle, 41-worm shaft segment. DETAILED DESCRIPTION

[0017] The utility model will be further described below in combination with the drawings: EMBODIMENT

[0018] A kind of elastic seat seal signal gate valve, such as Figures 1-4As shown, including the valve body 1, fixedly installed on the valve body 1 upper end valve cover 2, fixedly installed on the valve cover 2 upper end top cover 3, rotatingly arranged on the valve cover 2 valve stem 4, the valve stem 4 lower end is connected with the gate for controlling the opening and closing of the valve, the valve stem 4 upper end is connected with the hand wheel 5 for controlling the rotation of the valve stem 4,

[0019] The top cover 3 upper end is fixedly installed with signal indicating device 6 for showing the opening and closing state of the valve, the signal indicating device 6 includes a housing 61 fixedly installed on the upper end of the top cover 3, two fixed plates 62 fixedly arranged in the housing 61, a worm gear 63 rotatably arranged between the two fixed plates 62, an opening is arranged on one side of the housing 61, and an indicator disc 64 is fixedly arranged in the opening, a protective cover 65 is fixedly arranged on one side of the indicator disc 64 relative to the worm gear 63, and a connecting shaft 66 is fixedly connected to one end of the worm gear 63 close to the indicator disc 64, extending through the indicator disc 64 and between the indicator disc 64 and the protective cover 65, and an indicating needle 67 is fixedly connected to the end of the connecting shaft 66 away from the worm gear 63, and a worm shaft segment 41 is arranged on the valve stem 4, penetrating the housing 61 and engaging with the worm gear 63 arranged in the housing 61.

[0020] Working principle:

[0021] The valve body 1 is fixedly installed between the two pipelines through the flanges on both sides, and the valve stem 4 is rotated by rotating the hand wheel 5, thereby driving the gate connected to the lower end of the valve stem 4 to move, thereby realizing the opening and closing of the valve.

[0022] The valve of the utility model, the signal indicating device 6 is fixedly installed on the top cover 3, when the valve stem 4 is rotated by rotating the hand wheel 5 to adjust the opening and closing state of the valve, the worm shaft segment 41 arranged on the valve stem 4 drives the rotation of the worm gear 63 in the signal indicating device 6, and the worm shaft segment 41 rotates one tooth pitch every one revolution, the rotation of the worm gear 63 drives the rotation of the connecting shaft 66 fixedly connected thereto, and the rotation of the connecting shaft 66 drives the swinging of the indicating needle 67 fixedly installed on the end of the connecting shaft 66, the indicating needle 67 is located between the indicator disc 64 and the protective cover 65, and the operator can intuitively understand the opening and closing state of the valve by observing the indicating position of the indicating needle 67 on the indicator disc 64, thereby ensuring the control accuracy.

[0023] Although the present disclosure has been described in detail with reference to the example embodiments, the present disclosure is not limited thereto and various modifications and changes can be made thereto without departing from the scope of the present disclosure, which will be apparent to those skilled in the art.

Claims

1. An elastic seat seal signal gate valve, comprising a valve body (1); a valve cover (2) fixedly installed on the upper end of the valve body (1); a top cover (3) fixedly installed on the upper end of the valve cover (2); a valve stem (4) rotatably arranged on the valve cover (2); a shutter connected to the lower end of the valve stem (4) for controlling the opening and closing of the valve; a hand wheel (5) connected to the upper end of the valve stem (4) for controlling the rotation of the valve stem (4); characterized in that A signal indicating device (6) for displaying the opening and closing state of the valve is fixedly installed on the upper end of the top cover (3); the signal indicating device (6) comprises a housing (61) fixedly installed on the upper end of the top cover (3); two fixed plates (62) fixedly arranged in the housing (61); a worm gear (63) rotatably installed between the two fixed plates (62) through a bearing; an opening is arranged on one side of the housing (61), and an indicating disc (64) is fixedly arranged at the opening; a protective cover (65) is fixedly arranged on the side of the indicating disc (64) away from the worm gear (63); one end of the worm gear (63) close to the indicating disc (64) is fixedly connected with a connecting shaft (66) penetrating through the indicating disc (64) and extending between the indicating disc (64) and the protective cover (65), and the end of the connecting shaft (66) away from the worm gear (63) is fixedly connected with an indicating needle (67); a worm shaft section (41) penetrating through the housing (61) and meshing with the worm gear (63) arranged inside the housing (61) is arranged on the valve stem (4).

2. A resilient seat seal gate valve according to claim 1, wherein, The indicating disc (64) is provided with scales on the side facing the protective cover (65).

3. A resilient seat seal gate valve according to claim 1 wherein, The protective cover (65) is made of transparent glass.

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