Non-rising stem gate valve

Abstract

The utility model relates to the technical field of non-rising stem gate valves, in particular to a non-rising stem gate valve which comprises a valve body and an intercepting device, a valve rod is arranged on the inner wall of the valve body, a handle is installed at the upper end of the valve rod, the intercepting device is arranged in the inner wall of the valve body and comprises a supporting piece, a movable piece and a filtering piece, and the supporting piece is fixedly connected with the inner wall of the valve body. According to the utility model, the intercepting device is arranged, and the supporting piece, the movable piece and the filtering piece are matched with one another, so that entering liquid can be filtered, impurities can be pushed to be cleaned when the movable piece and the filtering piece are pulled out through the pull rod, meanwhile, the filtering piece can be cleaned through the cleaning assembly, the whole device is convenient to use, the impurities can be intercepted, and the practicability is high. Impurities directly entering the non-rising stem gate valve and a groove or other key parts matched with the non-rising stem gate valve in a sealing mode are reduced, abrasion and damage caused by extrusion of the non-rising stem gate valve and the impurities are greatly reduced, and the service life of the non-rising stem gate valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the concealed stem gate valve especially is a concealed stem gate valve. BACKGROUND

[0002] The valve stem in the concealed stem gate valve is not exposed but hidden in the valve, and this design makes the appearance of the valve more simple and beautiful, and also reduces the possibility that the valve stem is affected by the external environment, such as corrosion, collision, etc., and a parallel gate plate is usually used, the gate plate and the valve seat are tightly attached through a sealing surface, the flow of fluid is cut off, and the movement mode of the gate plate is up and down, and the gate plate is moved up and down in the valve body through the rotation of the valve stem.

[0003] The prior art such as the utility model with publication number CN201593622U provides a concealed stem gate valve, which comprises a valve body, a valve cover connected to the valve body, a valve stem, a valve flap and a transmission device, the upper end of the valve stem is connected with the transmission device, the lower end of the valve stem is connected with the valve flap, wherein the valve stem is supported in the valve cover through a rolling bearing and can rotate relatively, the gate valve uses an over-torque safety transmission device, can effectively protect the internal parts of the valve when the operation torque is too large, also uses a guide shoe to realize accurate positioning of the valve flap during rubber coating, and the rubber coating thickness is uniform, the gate valve has small operation torque, reliable sealing, long service life and simple assembly, solves the problem that the existing valve flap rubber coating generally uses a certain thickness of rubber skin to position the rough valve flap casting inside, but the flexible rubber will produce large deviation when subjected to uneven force, so that the rubber coating thickness is uneven, and thus the places with thin thickness are prone to breakage during use, so that the internal gate valve parts are exposed to the medium and corroded.

[0004] In daily work, it is found that the existing concealed stem gate valve is used in the process, impurities are mixed in the liquid, the impurities are easy to accumulate in the groove in sealing cooperation with the gate plate when passing through the concealed stem gate valve, the gate plate is extruded with the accumulated impurities, the extrusion not only damages the structure of the valve, affects the normal service life and performance, and the existence of the impurities also causes the valve to be unable to tightly attach after being closed, so that a gap is formed, fluid leakage is caused, and the existing concealed stem gate valve is easy to enter impurities, causing the valve to be damaged and unable to be tightly sealed. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the defects in the prior art that impurities are easy to enter and cause the valve to be damaged and unable to be tightly sealed, and provides a concealed stem gate valve.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a concealed stem gate valve, including the valve body and intercepting device, the inner wall of valve body is provided with valve stem, the upper end of valve stem is installed with handle, the inner wall of valve body is provided with intercepting device, the intercepting device includes support, movable part and filter piece, the inner wall of valve body is fixedly connected with support, movable part and filter piece are arranged on one side of support respectively, the inner wall of valve body is inserted with movable part, the surface of filter piece is provided with four screws, the surface of movable part is installed with filter piece through screw, the side close to support of movable part is fixedly connected with two elastic ropes, the other end of elastic rope is fixedly connected with the inner wall of support, the surface of movable part is fixedly connected with pull rod, the surface of filter piece is provided with cleaning assembly, the surface of filter piece is provided with cleaning assembly, the inner wall of filter piece is rotatably connected with pivot, the surface of pivot is fixedly connected with cleaning piece, through above-mentioned parts, when using, filter piece can filter the liquid that enters, intercepts impurity, reduces the impurity accumulation in valve body, when cleaning, only need to pull pull rod, pull rod drives movable part and filter piece to move in valve body, can push out the impurity from valve body, can clean filter piece through cleaning assembly simultaneously.

[0007] Preferably, the support is combined by the annular ring fixedly connected with the inner wall of the valve body and the plurality of cylindrical rods fixedly connected in the annular ring, and the annular ring in the support can support the movable part, and the plurality of cylindrical rods in the annular ring can support the filter piece.

[0008] Preferably, one end of the pivot is fixedly connected with a knob.

[0009] Preferably, the surface of the filter piece is provided with a positioning groove, and the inner wall of the positioning groove is inserted with the movable part, and after the filter piece is placed on the movable part, the movable part can be inserted in the positioning groove on the surface of the filter piece, so as to ensure the stability of the filter piece.

[0010] Preferably, a protection device is arranged between the valve body and the valve stem, the protection device comprises a fixed sleeve, the surface of the fixed sleeve is fixedly connected with the valve body, the surface of the valve stem is fixedly connected with a fixed ring, the inner wall of the fixed sleeve is slidably connected with a clamping block, the surface of the fixed ring is provided with a clamping groove, the inner wall of the clamping block is clamped with the clamping groove, the inner wall of the fixed sleeve is rotatably connected with a screw rod, and the inner wall of the clamping block is threadedly connected with the screw rod, through the above-mentioned parts, the clamping block can be controlled to move in the fixed sleeve through the screw rod, when the valve stem is rotated to a certain position, and the valve body is in a closed state, the clamping block can be inserted in the corresponding clamping groove on the surface of the fixed ring through the screw rod, so as to reduce the phenomenon that the valve is mistakenly opened.

[0011] Preferably, a rotating head is fixedly connected to one end of the screw. A slot is formed on the surface of the rotating head. By means of the above components, when controlling the screw to rotate, a suitable tool can be inserted into the slot on the surface of the rotating head, thereby controlling the rotation of the rotating head and the screw to achieve protective operation.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting up an interception device, the liquid entering can be filtered through the cooperation between the support, movable part, and filter. When the movable part and filter are pulled out by the pull rod, impurities can be pushed and cleaned. At the same time, the cleaning component can clean the filter. The whole is easy to use and can intercept impurities, reducing the direct entry of impurities into the groove of the sealing fit of the gate valve or other key parts. This greatly reduces the wear and damage caused by the compression of impurities on the gate valve and extends the service life of the gate valve.

[0014] 2. In this utility model, by setting a protective device, the valve can be locked in the closed state by means of a fixed sleeve, a fixed ring, a screw, and a locking block, thereby reducing the possibility of the valve being accidentally opened in the closed state. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a non-stick gate valve is provided for this utility model;

[0016] Figure 2 This utility model proposes a non-sunken stem gate valve. Figure 1 Schematic diagram of the structure at point A in the middle;

[0017] Figure 3 This utility model provides a cross-sectional structural diagram of an interception device for a non-stick gate valve;

[0018] Figure 4 This utility model provides a schematic diagram of the interception device of a non-stick gate valve.

[0019] Figure 5 This utility model provides an exploded structural diagram of an interception device for a hidden stem gate valve.

[0020] Figure 6 This utility model provides a cross-sectional structural diagram of a protective device for a non-stick gate valve.

[0021] Legend:

[0022] 1, valve body; 2, valve stem; 3, handle; 4, intercepting device; 41, support; 42, movable piece; 43, elastic rope; 44, pull rod; 45, filter; 46, screw; 47, rotating shaft; 48, knob; 49, cleaning piece; 5, protective device; 51, fixed sleeve; 52, fixed ring; 53, rotating head; 54, screw rod; 55, clamping block; 56, clamping groove. DETAILED DESCRIPTION

[0023] Please refer to Figures 1-6 The utility model provides a technical scheme: a concealed stem gate valve, it includes valve body 1 and intercepting device 4, the inner wall of valve body 1 is provided with valve stem 2, the upper end of valve stem 2 is installed handle 3, and intercepting device 4 is arranged in the inner wall of valve body 1.

[0024] Specifically, intercepting device 4 includes support 41, movable piece 42 and filter 45, support 41 is fixedly connected with the inner wall of valve body 1, movable piece 42 and filter 45 are arranged on one side of support 41 respectively, movable piece 42 is inserted with the inner wall of valve body 1, the surface of filter 45 is provided with four screws 46, filter 45 is installed on the surface of movable piece 42 through screw 46, two elastic ropes 43 are fixedly connected on the side of movable piece 42 close to support 41, the other end of elastic rope 43 is fixedly connected with the inner wall of support 41, pull rod 44 is fixedly connected on the surface of movable piece 42, the surface of filter 45 is provided with cleaning assembly, and cleaning assembly includes rotating shaft 47 that is rotationally connected with the inner wall of filter 45, and the surface of rotating shaft 47 is fixedly connected with cleaning piece 49.

[0025] In the embodiment: when using, filter 45 can filter the liquid entering, intercept impurities, reduce the impurities accumulation in valve body 1, when cleaning, only pull pull rod 44, pull rod 44 drives movable piece 42 and filter 45 to move in valve body 1, can push out the impurities from valve body 1, and filter 45 can be cleaned through cleaning assembly simultaneously.

[0026] Specifically, support 41 is combined by the circular ring fixedly connected with the inner wall of valve body 1 and multiple cylindrical rods fixedly connected in the circular ring.

[0027] In the embodiment: the circular ring in support 41 can support movable piece 42, and multiple cylindrical rods in the circular ring can support filter 45.

[0028] Specifically, one end of rotating shaft 47 is fixedly connected with knob 48.

[0029] Specific, the surface of the filter piece 45 is provided with a positioning groove, the movable piece 42 is inserted with the inner wall of the positioning groove, after the filter piece 45 is placed on the movable piece 42, the movable piece 42 can be inserted in the positioning groove on the surface of the filter piece 45, so as to ensure the stability of the filter piece 45.

[0030] Specific, the valve body 1 and the valve rod 2 are provided with a protection device 5, the protection device 5 includes a fixed sleeve 51, the fixed sleeve 51 is fixedly connected with the surface of the valve body 1, the surface of the valve rod 2 is fixedly connected with a fixed ring 52, the inner wall of the fixed sleeve 51 is slidably connected with a clamping block 55, the surface of the fixed ring 52 is provided with a clamping groove 56, the clamping block 55 is clamped with the inner wall of the clamping groove 56, the inner wall of the fixed sleeve 51 is rotatably connected with a screw rod 54, the screw rod 54 is threadedly connected with the inner wall of the clamping block 55.

[0031] In the embodiment: the screw rod 54 can control the clamping block 55 to move in the fixed sleeve 51, when the valve rod 2 is rotated to a certain position, the valve body 1 is in a closed state, the clamping block 55 can be inserted in the corresponding clamping groove 56 on the surface of the fixed ring 52 by the screw rod 54, so as to reduce the phenomenon that the valve is mistakenly opened.

[0032] Specific, one end of the screw rod 54 is fixedly connected with a rotating head 53, the surface of the rotating head 53 is provided with a T-shaped slot.

[0033] In the embodiment: when the screw rod 54 is controlled to rotate, a suitable tool can be inserted in the T-shaped slot on the surface of the rotating head 53, so as to control the rotating head 53 and the screw rod 54 to rotate, and the protection operation is realized.

[0034] Working principle: when the valve body 1 is in a normal open state, liquid can enter the valve body 1, after the liquid enters, the filter piece 45 can filter the entering liquid, the supporting piece 41 can support the movable piece 42 and the filter piece 45, the filtered impurities are intercepted at the inlet of the valve body 1, when cleaning is needed, the pull rod 44 can be pulled, the pull rod 44 drives the movable piece 42 and the filter piece 45 to move in the valve body 1, the elastic rope 43 is deformed under stress, when the movable piece 42 moves to a certain position, the movable piece 42 and the filter piece 45 can push out the impurities, at the same time, the rotating knob 48 and the rotating shaft 47 are rotated, the cleaning piece 49 can be driven to rotate, the filter piece 45 is cleaned, after the cleaning is completed, the pull rod 44 is loosened, the elastic rope 43 can drive the movable piece 42 and the filter piece 45 to reset, when the valve body 1 needs to be closed, the handle 3 in the valve body 1 and the valve rod 2 are only rotated, until the valve body 1 is closed, the rotation is stopped, a suitable tool is inserted in the T-shaped slot on the surface of the rotating head 53, so as to control the rotating head 53 and the screw rod 54 to rotate, the screw rod 54 controls the clamping block 55 to be inserted in the corresponding clamping groove 56 on the surface of the fixed ring 52, so as to reduce the phenomenon that the valve is mistakenly opened.

Claims

1. A non-sunken gate valve, comprising a valve body (1) and an interception device (4), characterized in that: A valve stem (2) is provided on the inner wall of the valve body (1), and a handle (3) is installed on the upper end of the valve stem (2). The interception device (4) is disposed in the inner wall of the valve body (1). The interception device (4) includes a support (41), a movable part (42), and a filter (45). The support (41) is fixedly connected to the inner wall of the valve body (1). The movable part (42) and the filter (45) are respectively located on one side of the support (41). The movable part (42) is inserted into the inner wall of the valve body (1). Four screws (46) are provided on the surface of the filter (45). The filter element (45) is mounted on the surface of the movable part (42) by screws (46). Two elastic ropes (43) are fixedly connected to the side of the movable part (42) near the support (41). The other end of the elastic ropes (43) is fixedly connected to the inner wall of the support (41). A pull rod (44) is fixedly connected to the surface of the movable part (42). A cleaning assembly is provided on the surface of the filter element (45). The cleaning assembly includes a rotating shaft (47) rotatably connected to the inner wall of the filter element (45). A cleaning component (49) is fixedly connected to the surface of the rotating shaft (47).

2. The gate valve with a non-rising stem according to claim 1, characterized in that: The support member (41) is composed of a ring fixedly connected to the inner wall of the valve body (1) and a plurality of cylindrical rods fixedly connected in the ring.

3. A gate valve with a non-rising stem according to claim 1, characterized in that: A knob (48) is fixedly connected to one end of the rotating shaft (47).

4. A gate valve with a non-rising stem according to claim 1, characterized in that: The surface of the filter element (45) is provided with a positioning groove, and the movable element (42) is inserted into the inner wall of the positioning groove.

5. A gate valve with a non-rising stem according to claim 1, characterized in that: A protective device (5) is provided between the valve body (1) and the valve stem (2). The protective device (5) includes a fixed sleeve (51), which is fixedly connected to the surface of the valve body (1). A fixed ring (52) is fixedly connected to the surface of the valve stem (2). A locking block (55) is slidably connected to the inner wall of the fixed sleeve (51). A locking groove (56) is opened on the surface of the fixed ring (52). The locking block (55) is engaged with the inner wall of the locking groove (56). A screw (54) is rotatably connected to the inner wall of the fixed sleeve (51). The screw (54) is threadedly connected to the inner wall of the locking block (55).

6. A gate valve with a non-rising stem according to claim 5, characterized in that: One end of the screw (54) is fixedly connected to a rotating head (53), and a slot is formed on the surface of the rotating head (53).

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