A blind plate valve

Abstract

A blind plate valve belongs to the technical field of blind plate valves. The blind plate valve is characterized in that it comprises a valve body (1), a mounting plate (5) and a valve plate (3), wherein two valve bodies (1) are arranged side by side and at intervals, and a clamping mechanism is arranged between the two valve bodies (1), the mounting plate (5) is swingably arranged between the two valve bodies (1), the valve plate (3) has two pieces symmetrically arranged on both sides of the mounting plate (5), one of which is a blind plate and the other is a through-hole plate, and both sides of each valve plate (3) are provided with a sealing ring (6) for sealing with the valve body (1); the valve plate (3) and the mounting plate (5) are detachably connected, and a locking mechanism is arranged between each valve plate (3) and the mounting plate (5). When replacing the sealing ring of the blind plate valve, the valve plate can be quickly removed and replaced in a place without gas, thereby eliminating safety hazards and reducing the danger to people. The sealing ring can be replaced quickly, which reduces the time for replacing the sealing ring.

Description

Technical Field

[0001] The invention discloses a blind plate valve, belonging to the technical field of blind plate valves. Background Art

[0002] The blind plate valve is usually composed of a valve body, a valve plate and a lead screw. The lead screw rotates to loosen the two valve bodies, the valve plate rotates to complete the switching of the working state, and then the lead screw rotates in the opposite direction to clamp, completing the switching of the blind plate valve. The valve plate and the valve body are sealed by a sealing ring. Since the sealing ring is a wearing part and needs to be replaced regularly, the valve plate of the blind plate valve used in the market cannot be removed. When the sealing ring is damaged, it can only be replaced on site. Because the blind plate valve is usually used on the gas pipeline, there is gas on site, so there are great safety hazards when replacing it on site, which can easily cause personal danger. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a blind plate valve which is easy to disassemble, enables quick and convenient replacement of the valve plate, and further facilitates replacement of the sealing ring without potential safety hazards.

[0004] The technical solution adopted by the present invention to solve the technical problem is: the blind plate valve is characterized in that it includes a valve body, a mounting plate and a valve plate, two valve bodies are arranged side by side and at intervals, a clamping mechanism is arranged between the two valve bodies, the mounting plate is swingably arranged between the two valve bodies, the valve plate has two pieces symmetrically arranged on both sides of the mounting plate, one of which is a blind plate and the other is a through-hole plate, and sealing rings for sealing with the valve body are arranged on both sides of each valve plate;

[0005] The valve plate and the mounting plate are detachably connected, and a locking mechanism is provided between each valve plate and the mounting plate.

[0006] Preferably, the locking mechanism includes a locking block and a positioning block arranged on the valve plate, the locking block and the positioning block are arranged at intervals along the circumferential direction of the valve plate, an arc-shaped mounting portion with a concave middle portion is provided on the mounting plate, a positioning port is provided in the mounting portion, the positioning block extends into the positioning port on the corresponding side, and the locking block is connected to the mounting plate by a locking bolt.

[0007] Preferably, a connecting piece is swingably mounted on the mounting plate shown, the locking bolt is threadedly connected to the connecting piece, the locking block is "U"-shaped, the locking bolt is inserted into the locking block and fastens the valve plate on the corresponding side.

[0008] Preferably, a positioning mechanism is provided between each valve plate and the mounting plate.

[0009] Preferably, the positioning mechanism comprises a positioning groove arranged on the valve plate, the plane where the positioning groove is located is perpendicular to the axis of the valve plate, and the corresponding side of the mounting plate extends into the positioning groove of the valve plate.

[0010] Preferably, mounting grooves for mounting a sealing ring are symmetrically arranged on both end surfaces of each valve plate.

[0011] Preferably, the mounting groove is tapered and gradually narrows from the bottom to the opening.

[0012] Preferably, the clamping mechanism includes a screw, both ends of which are provided with threads of different rotation directions, the two ends of the screw are respectively threadedly connected to the valve body on the corresponding side, and both ends of the screw are also provided with nuts for locking the valve body on the corresponding side.

[0013] Preferably, the clamping mechanism comprises a lead screw, which is fixedly connected to any one valve body via a nut, and is threadedly connected to the other valve body.

[0014] Preferably, at least two of the clamping mechanisms are arranged at intervals around the valve body, and the mounting plate is swingably mounted on any one of the clamping mechanisms.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The valve plate and the mounting plate of the blind plate valve are detachably connected and locked by a locking mechanism. When replacing the sealing ring, the valve plate can be quickly removed and replaced in a place without gas, eliminating safety hazards and reducing the danger to people. The sealing ring can be replaced quickly, reducing the time for replacing the sealing ring.

[0017] 2. The positioning block and the positioning port cooperate with each other to realize the positioning of the valve plate. The locking bolt locks the locking block and cooperates with the positioning block to lock the valve plate in the circumferential direction. The locking is firm and can be completed by one bolt, which is easy to disassemble.

[0018] 3. The locking block is "U" shaped, which makes the disassembly and assembly between the locking block and the locking bolt quick, and the disassembly can be completed within 10 seconds.

[0019] 4. The positioning mechanism can position the valve plate to avoid relative displacement between the valve plate and the mounting plate during use, which would affect the sealing effect between the valve plate and the valve body.

[0020] 5. The corresponding side of the mounting plate extends into the positioning groove of the valve plate, thereby positioning the valve plate in the axial direction to ensure that the valve plate and the mounting plate are firmly fastened to avoid relative displacement between the mounting plate and the valve plate.

[0021] 6. Both end faces of the valve plate are provided with installation grooves for installing the sealing ring, which not only facilitates the installation of the sealing ring, but also enables the sealing ring to be accurately positioned; the sealing groove is conical to ensure that the sealing ring is firmly installed and avoid leakage caused by loosening of the sealing ring.

[0022] 7. The fastening between the two valve bodies is achieved through the screw, which is convenient for fastening.

[0023] 8. Multiple clamping mechanisms are arranged around the valve body at intervals to ensure reliable sealing between the valve body and the valve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main view of the blind plate valve.

[0025] Figure 2 It is the left view schematic diagram of the blind plate valve.

[0026] Figure 3 It is a schematic diagram of the connection between the valve plate and the mounting plate.

[0027] Figure 4 It is a schematic diagram of the main view of the valve plate.

[0028] Figure 5 It is a schematic diagram of the front cross-sectional view of the valve plate.

[0029] In the figure: 1, valve body 101, connecting plate 2, screw 3, valve plate 301, locking block 302, positioning block 303, mounting groove 304, positioning groove 4, locking bolt 5, mounting plate 501, positioning port 6, sealing ring. DETAILED DESCRIPTION

[0030] Figures 1 to 5 The best embodiment of the present invention is shown below in conjunction with the attached Figures 1 to 5 The present invention is further described.

[0031] A blind plate valve includes a valve body 1, a mounting plate 5 and a valve plate 3. Two valve bodies 1 are arranged side by side and at intervals, and a clamping mechanism is arranged between the two valve bodies 1. The mounting plate 5 is swingably arranged between the two valve bodies 1. The valve plate 3 has two pieces symmetrically arranged on both sides of the mounting plate 5, one of which is a blind plate and the other is a through-hole plate. Both sides of each valve plate 3 are provided with sealing rings 6 for sealing with the valve body 1; the valve plate 3 and the mounting plate 5 are detachably connected, and a locking mechanism is arranged between each valve plate 3 and the mounting plate 5. The valve plate 3 and the mounting plate 5 of the blind plate valve are detachably connected and locked by the locking mechanism. When replacing the sealing ring 6, the valve plate 3 can be quickly removed and replaced in a place without gas, eliminating safety hazards and reducing the danger to people. The sealing ring 6 can be replaced quickly, reducing the time for replacing the sealing ring 6.

[0032] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still belong to the scope of protection of the present application.

[0033] Specific: such as Figure 1~2 As shown: there are two valve bodies 1 arranged side by side, the two valve bodies 1 are arranged in parallel and at intervals, the middle parts of the two valve bodies 1 are each provided with a valve hole, and the valve holes of the two valve bodies 1 are arranged coaxially.

[0034] There are at least two clamping mechanisms at intervals around the valve body 1. In this embodiment, there are three clamping mechanisms evenly spaced around the valve body 1. Three connecting plates 101 are evenly spaced around the side of each valve body 1, and the clamping mechanism is arranged between the corresponding connecting plates 101 in the two valve bodies 1.

[0035] The clamping mechanism includes a screw 2, one end of which is fixedly connected to the connecting plate 101 of one valve body 1 through a nut, and the other end is threadedly connected to the connecting plate 101 of the other valve body 1, thereby realizing the clamping and loosening of the two valve bodies 1. The two ends of the screw 2 can also be provided with threads of different rotation directions, and the two ends of the screw 2 are respectively threadedly connected to the connecting plate 101 of the valve body 1 on the corresponding side. Rotating the screw 2 can realize the synchronous movement of the two valve bodies 1 in opposite directions, thereby realizing the clamping and loosening of the two valve bodies 1. Both ends of each screw 2 are provided with nuts for locking the valve body 1 on the corresponding side to prevent the valve body 1 from loosening during use.

[0036] There are two valve plates 3 symmetrically arranged on both sides of the mounting plate 5, one of which is a blind plate and the other is a through-hole plate. Sealing rings 6 are arranged on both sides of each valve plate 3. A sleeve is arranged on the mounting plate 5, and the lead screw 2 on the upper part of the sleeve is rotatably connected, and the valve plate 3 swings synchronously with the mounting plate 5. When the blind plate swings between the two valve bodies 1 and aligns with the valve hole of the valve body 1, the blind plate valve is in the off state. When the through-hole plate swings between the two valve bodies 1 and aligns with the valve holes on the through-hole plate and the two valve bodies 1, the blind plate valve is in the on state.

[0037] like Figure 3~4 As shown: the mounting plate 5 is fan-shaped, and the mounting plate 5 is coaxially arranged with the sleeve. The mounting plate 5 is symmetrically provided with arc-shaped mounting parts with a concave center on both sides, and the valve plate 3 is mounted on the mounting parts on the corresponding side, and the valve plate 3 is coaxially arranged with the mounting parts on the corresponding side. The central angle of the mounting parts is less than 180°, so that the disassembly and assembly of the valve plate 3 is convenient.

[0038] The locking mechanism includes a locking block 301 and a positioning block 302 arranged on the valve plate 3. The locking block 301 and the positioning block 302 are both arranged along the radial direction of the valve plate 3. The locking block 301 and the positioning block 302 are connected to the outer edge of the valve plate 3. The locking block 301 is arranged on the upper side of the valve plate 3, and the positioning block 302 is arranged on the lower part of the valve plate 3 near the mounting plate 5. Each mounting portion is provided with a positioning port 501 that matches the positioning block 302 on the corresponding side. The width of the positioning port 501 is greater than the width of the positioning block 302, so that the positioning block 302 can be easily inserted into the positioning port 501. The locking block 301 is connected to the mounting plate 5 through the locking bolt 4, and the axis of the locking bolt 4 is coplanar with the valve plate 3, so as to match the positioning block 302 to fix the valve plate 3.

[0039] The locking block 301 is in the shape of a "U" with the opening facing upwards. A connecting piece is provided on the mounting plate 5. The connecting piece is rotatably connected to the mounting plate 5. The locking bolt 4 is threadedly connected to the connecting piece. The locking bolt 4 is inserted into the opening of the locking block 301 and locks the locking block 301 and the mounting plate 5. The valve plate 3 can be fastened by the locking bolt 4. When disassembling, only one locking bolt 4 needs to be loosened, and the locking bolt 4 does not need to be removed, so that the locking bolt 4 is easy to disassemble.

[0040] like Figure 5 As shown: an annular mounting groove 303 is arranged on the two end faces of each valve plate 3, and the mounting groove 303 is arranged coaxially with the valve plate 3. Each mounting groove 303 is a cone that gradually narrows from the bottom to the opening. The side of the sealing ring 6 close to the valve plate 3 is installed in the mounting groove 303 on the corresponding side, which not only facilitates the positioning and installation of the sealing ring 6, but also ensures that the sealing ring 6 is firmly installed to avoid leakage caused by loosening of the sealing ring 6.

[0041] A positioning mechanism is provided between the valve plate 3 and the mounting plate 5, and the positioning mechanism includes a positioning groove 304 provided on the valve plate 3, and the plane where the positioning groove 304 is located is perpendicular to the axis of the valve plate 3, and the positioning groove 304 is provided on the outer edge of the valve plate 3 close to the mounting plate 5, and the width of the positioning groove 304 is equal to or slightly larger than the thickness of the mounting plate 5, and the corresponding side of the mounting plate 5 extends into the positioning groove 304, thereby completing the axial positioning of the valve plate 3 and ensuring that the valve plate 3 is firmly and reliably installed.

[0042] When the sealing ring 6 is damaged, loosen the locking bolt 4 of the corresponding valve plate 3, and then remove the valve plate 3. The valve plate 3 can be removed in 10 seconds, which is convenient and fast. After removing the valve plate 3, move to a place without gas to replace the sealing ring 6, reducing the harm to people.

[0043] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A blind plate valve, Features: The invention comprises a valve body (1), a mounting plate (5) and a valve plate (3), wherein two valve bodies (1) are arranged side by side and at an interval, and a clamping mechanism is arranged between the two valve bodies (1); the mounting plate (5) is swingably arranged between the two valve bodies (1); the valve plate (3) comprises two pieces symmetrically arranged on both sides of the mounting plate (5), one of which is a blind plate and the other is a through-hole plate; and each valve plate (3) is provided with a sealing ring (6) on both sides for sealing with the valve body (1); The valve plate (3) and the mounting plate (5) are detachably connected, and a locking mechanism is provided between each valve plate (3) and the mounting plate (5), the locking mechanism comprising a locking block (301) and a positioning block (302) provided on the valve plate (3), the locking block (301) and the positioning block (302) being arranged at intervals along the circumferential direction of the valve plate (3), the mounting plate (5) being provided with an arc-shaped mounting portion with a concave middle portion, a positioning opening (501) being provided in the mounting portion, the positioning block (302) extending into the positioning opening (501) on the corresponding side, and the locking block (301) and the mounting plate (5) being connected via a locking bolt (4); A connecting piece is swingably mounted on the mounting plate (5), a locking bolt (4) is threadedly connected to the connecting piece, the locking block (301) is U-shaped, the locking bolt (4) is inserted into the locking block (301) and is fastened to the valve plate (3) on the corresponding side; A positioning mechanism is provided between each valve plate (3) and the mounting plate (5), the positioning mechanism comprising a positioning groove (304) provided on the valve plate (3), the plane where the positioning groove (304) is located being perpendicular to the axis of the valve plate (3), and the corresponding side of the mounting plate (5) extending into the positioning groove (304) of the valve plate (3); Mounting grooves (303) for mounting a sealing ring (6) are symmetrically arranged on the two end surfaces of each valve plate (3).

2. The blind plate valve according to claim 1, Features: The mounting groove (303) is tapered and gradually narrows from the bottom to the opening.

3. The blind plate valve according to claim 1, Features: The clamping mechanism comprises a lead screw (2), both ends of the lead screw (2) are provided with threads of different rotation directions, the two ends of the lead screw (2) are respectively threadedly connected to the valve body (1) on the corresponding side, and the two ends of the lead screw (2) are also provided with nuts for locking the valve body (1) on the corresponding side.

4. The blind plate valve according to claim 1, Features: The clamping mechanism comprises a lead screw (2), the lead screw (2) being fixedly connected to any one valve body (1) via a nut, and the lead screw (2) being threadedly connected to the other valve body (1).

5. The blind plate valve according to claim 1, 3 or 4, Features: At least two of the clamping mechanisms are arranged at intervals around the valve body (1), and the mounting plate (5) is swingably mounted on any one of the clamping mechanisms.

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