High-pressure Y-shaped stop valve

Abstract

The utility model discloses a high-pressure Y-shaped stop valve, which belongs to the field of stop valves and comprises a valve body, a valve rod and a first full-thread stud, a valve clack is fixedly arranged in the valve body, the valve rod is slidably sleeved with a valve cover, a support is clamped at the upper end of the valve body, a filler block is clamped at the upper end of the interior of the valve cover, and a second full-thread stud is arranged at the lower end of the filler block. A spacer ring is arranged in the packing block, the upper end of the valve cover is sleeved with a supporting plate, a plurality of full-thread socket head cap screws are rotationally inserted into the supporting plate through threads, a packing pressing sleeve is clamped to the upper end of the interior of the valve cover, and a first full-thread stud is sleeved with a flat gasket; the hard alloy is arranged on the surface of the guide face of the valve body in a surfacing mode, the valve clack is guided, the problem that other parts are not extruded and bent is solved, the hard alloy sealing face of the valve clack provides fastening sealing, the service life is prolonged, and pressure drop flowing through the valve is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of stop valve more specifically, relate to a high pressure Y type stop valve. BACKGROUND

[0002] The stop valve is also called the stop gate valve, belongs to the forced sealing type valve, so when the valve is closed, the pressure must be applied to the valve clapper to force the sealing surface not to leak, when the medium enters the valve from below the valve clapper, the resistance that the operating force needs to overcome is the friction of the valve rod and the packing and the thrust generated by the pressure of the medium, the force of closing the valve is greater than the force of opening the valve, so the diameter of the valve rod needs to be large, otherwise the fault of the valve rod top bending will occur, according to the connecting mode, it is divided into three kinds: flange connection, screw connection and welding connection.

[0003] For example, the Y type high pressure stop valve disclosed in the publication number CN204985741U includes a valve body, a valve clapper, a valve clapper cover, a valve rod, a packing box, a sealing ring, a pressure ring, a four open ring, a gland, packing, a packing pressure sleeve, a packing pressure plate, a positioning block, a support and a manual device, characterized in that, the valve body is provided with a middle cavity and a flow channel hole, the middle cavity of the valve body and the flow channel hole of the valve body are at an angle of 45 degrees, the inner wall of the bottom of the middle cavity of the valve body is a valve body guide surface, the side surface of the valve clapper includes a valve clapper sealing surface and a valve clapper guide surface, during operation, the valve clapper guide surface is in contact with the valve body guide surface, the valve clapper sealing surface is arc-shaped, and the valve body and the support are fixed through a clamp.

[0004] From the above-mentioned disclosure, it can be known that the existing stop valve only relies on the cooperation of the valve clapper sealing surface and the valve body to control the flow during the closing process, and due to the throttling effect, the liquid flow rate rapidly increases during the approach of the valve clapper to the sealing surface, which causes the erosion of the valve clapper sealing surface and the impact damage to the valve clapper sealing surface, thereby reducing the service life and use effect of the stop valve. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a high pressure Y type stop valve to solve the problem of protecting the stop valve.

[0006] To achieve the above object, the utility model provides the following technical scheme: a high pressure Y type stop valve, including valve body, valve rod and first full thread stud, the inside fixed setting of valve body has valve clack, the valve rod sliding sleeve joint has valve cover, the upper end of valve body is connected with support, the inside upper end of valve cover is connected with packing block, the inside of packing block is provided with isolating ring, the upper end of valve cover sleeve joint has support plate, support plate is inserted with a plurality of full screw hexagon socket screws through thread rotation, the inside upper end of valve cover is connected with packing pressure sleeve, the first full thread stud sleeve joint has flat washer, the upper end of first full thread stud is inserted with first nut through thread rotation, the upper end of valve rod sliding sleeve joint has clamping plate, the left side of clamping plate is inserted with internal hexagon socket screw through thread rotation, the upper end of valve rod is fixedly provided with bevel gear, the lower end of bevel gear is inserted with a plurality of second full thread stud through thread rotation, the surface of valve body guide surface is built up by welding hard alloy, the guidance of valve clack is provided, the problem that other parts are not extruded and bent is eliminated, the hard alloy sealing surface of valve clack provides fastening seal and prolongs service life, reduces the pressure drop of flowing through the valve.

[0007] Preferably, the upper end of the valve clack is fixedly connected with a valve clack cover, the inside of the valve clack cover is fixedly connected with a valve rod, and the support is slidingly sleeved on the valve cover.

[0008] Preferably, the valve body is arranged at the lower end of the valve cover, and the length of the valve rod is greater than the length of the valve cover.

[0009] Preferably, the valve cover is sealingly sleeved with a sealing ring, and the upper end of the sealing ring is connected with a pressing ring.

[0010] Preferably, the upper end of the packing pressure sleeve is fixedly provided with a packing pressure plate, and the right side of the packing pressure plate is inserted with the first full thread stud through thread rotation.

[0011] Preferably, the bevel gear is arranged at the upper end of the valve rod, and the first full thread stud and the second full thread stud are of the same type.

[0012] Preferably, the second full thread stud is sleeved with a spring washer, and the second full thread stud is sleeved with a second nut through thread rotation.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] (1) The utility model through valve body guide surface surface build up by welding hard alloy, provide the guidance of valve clack, eliminate the problem that other parts are not extruded and bent, the hard alloy sealing surface of valve clack provides fastening seal and prolongs service life, reduces the pressure drop of flowing through the valve. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the general assembly drawing of the valve body of the utility model.

[0016] Figure 2 Enlarged sectional view of the valve clack of the utility model;

[0017] Figure 3 Enlarged sectional view of the valve cover of the utility model;

[0018] Figure 4 Enlarged sectional view of the valve stem of the utility model;

[0019] Figure 5 Enlarged sectional view of the valve body of the utility model;

[0020] Figure 6 Enlarged sectional view of the clamping plate of the utility model;

[0021] Figure 7 Enlarged sectional view of the bracket of the utility model.

[0022] Explanation of reference numerals in the drawings:

[0023] 1 valve body, 2 valve clack, 3 valve clack cover, 4 valve stem, 5 valve cover, 6 sealing ring, 7 pressing ring, 8 bracket, 9 packing block, 10 spacer ring, 11 support plate, 12 full screw hexagonal screw, 13 packing pressing sleeve, 14 packing pressing plate, 15 first full thread stud, 16 flat washer, 17 first nut, 18 clamping plate, 19 inner hexagonal screw, 20 bevel gear, 21 second full thread stud, 22 spring washer, 23 second nut. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments; Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Embodiment 1

[0026] Please refer to Figures 1-7, one high pressure Y type stop valve in the drawing, including valve body 1, valve stem 4 and first full thread stud 15, the inside of valve body 1 is fixedly provided with valve clack 2, valve stem 4 is slidably sleeved with valve cover 5, the upper end of valve body 1 is clamped with support 8, the inside upper end of valve cover 5 is clamped with packing block 9, the inside of packing block 9 is provided with spacer ring 10, the upper end of valve cover 5 is sleeved with support plate 11, support plate 11 is inserted with a plurality of full screw hexagonal screws 12 by screwing, the inside upper end of valve cover 5 is clamped with packing pressing sleeve 13, first full thread stud 15 is sleeved with flat washer 16, the upper end of first full thread stud 15 is sleeved with first nut 17 by screwing, the upper end of valve stem 4 is slidably sleeved with clamping plate 18, the left side of clamping plate 18 is inserted with hexagonal screw 19 by screwing, the upper end of valve stem 4 is fixedly provided with bevel gear 20, the lower end of bevel gear 20 is inserted with a plurality of second full thread studs 21 by screwing.

[0027] In order to facilitate the protection of stop valve, the upper end of the valve clack 2 is fixedly clamped with the valve clack cover 3, the inside of the valve clack cover 3 is fixedly clamped with the valve stem 4, the support 8 is slidably sleeved with the valve cover 5, the valve body 1 is arranged at the lower end of the valve cover 5, the length of the valve stem 4 is greater than the length of the valve cover 5, the valve cover 5 is sealingly sleeved with the sealing ring 6, the upper end of the sealing ring 6 is clamped with the pressing ring 7, the upper end of the packing pressing sleeve 13 is fixedly provided with the packing pressing plate 14, the right side of the packing pressing plate 14 is inserted with the first full thread stud 15 by screwing, the bevel gear 20 is arranged at the upper end of the valve stem 4, the first full thread stud 15 is same in type with the second full thread stud 21, the second full thread stud 21 is sleeved with the spring washer 22, the second full thread stud 21 is sleeved with the second nut 23 by screwing.

[0028] In the embodiment, the valve body 1 is provided with a hard alloy surface by surfacing on the guide surface, the valve clack 2 is guided, the problem of extrusion bending of other parts is eliminated, the hard alloy sealing surface of the valve clack 2 provides tight sealing and prolongs the service life, and the pressure drop of the flow through the valve is reduced.

[0029] The valve body 1 is provided with a hard alloy surface by surfacing on the guide surface, the valve clack 2 is guided, the problem of extrusion bending of other parts is eliminated, the hard alloy sealing surface of the valve clack 2 provides tight sealing and prolongs the service life, and the pressure drop of the flow through the valve is reduced, and due to the adoption of the valve stem ball wedge reverse sealing structure and the ball wedge sealing structure, the sealing volume is small, the efficiency is high, and the sealing performance is more reliable.

[0030] The above is only the preferred specific embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the improvement concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A high-pressure Y-globe valve comprising a valve body (1), a valve stem (4) and a first full thread stud (15), characterized in that: The inside of the valve body (1) is fixedly provided with a valve clack (2), the valve stem (4) is slidably sleeved with a valve cover (5), the upper end of the valve body (1) is clamped with a support (8), the inside upper end of the valve cover (5) is clamped with a packing block (9), the inside of the packing block (9) is provided with a partition ring (10), the upper end of the valve cover (5) is sleeved with a support plate (11), the support plate (11) is threadedly rotatably inserted with a plurality of full hexagonal head screws (12), the inside upper end of the valve cover (5) is clamped with a packing pressing sleeve (13), the first full threaded stud (15) is sleeved with a flat washer (16), the upper end of the first full threaded stud (15) is threadedly rotatably sleeved with a first nut (17), the upper end of the valve stem (4) is slidably sleeved with a clamping plate (18), the left side of the clamping plate (18) is threadedly rotatably inserted with a hexagonal head screw (19), the upper end of the valve stem (4) is fixedly provided with a bevel gear (20), the lower end of the bevel gear (20) is threadedly rotatably inserted with a plurality of second full threaded studs (21).

2. A high pressure Y-globe valve according to claim 1, characterized in that: The upper end of the valve clack (2) is fixedly clamped with a valve clack cover (3), the inside of the valve clack cover (3) is fixedly clamped with a valve stem (4), the support (8) is slidably sleeved with the valve cover (5).

3. A high pressure Y-globe valve according to claim 1, characterized in that: The valve body (1) is arranged at the lower end of the valve cover (5), and the length of the valve stem (4) is greater than the length of the valve cover (5).

4. A high pressure Y-globe valve according to claim 1, characterized in that: The valve cover (5) is sealingly sleeved with a sealing ring (6), and the upper end of the sealing ring (6) is clamped with a pressing ring (7).

5. A high pressure Y-globe valve according to claim 1, characterized in that: The upper end of the packing pressing sleeve (13) is fixedly provided with a packing pressing plate (14), and the right side of the packing pressing plate (14) is threadedly rotatably inserted with a first full threaded stud (15).

6. A high pressure Y-globe valve according to claim 1, characterized in that: The bevel gear (20) is arranged at the upper end of the valve stem (4), and the first full threaded stud (15) is of the same model as the second full threaded stud (21).

7. A high pressure Y-globe valve according to claim 1, characterized in that: The second full threaded stud (21) is sleeved with a spring washer (22), and the second full threaded stud (21) is threadedly rotatably sleeved with a second nut (23).

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