Precision casting of gate valve body

Abstract

The utility model relates to the technical field of valve body castings, in particular to a gate valve body precision casting which comprises a gate valve casting body, an upper support is fixedly connected to the upper side of the gate valve casting body, a butt joint seat is installed on the upper support in a threaded connection mode, a sealing sliding groove is fixedly connected to the upper side of the butt joint seat, and a top seat is installed at the top of the sealing sliding groove in a threaded connection mode. A transmission assembly is arranged in the gate valve casting body. The transmission assembly comprises a threaded rod, the threaded rod is rotationally connected with the top base, a sliding block is slidably installed on the inner side of the sealing sliding groove, a threaded groove is formed in the sliding block, the lower end of the threaded rod is in threaded connection with the inner side of the threaded groove, two lower valve plates are symmetrically and fixedly connected to the lower side of the sliding block, and installation grooves are formed in the side edges of the lower valve plates. The two groups of lower valve plates are symmetrically arranged on the lower side of the sliding block, so that when the lower valve plates move to the bottom of the gate valve casting body, two sealing point positions are formed on the inner side of the gate valve casting body, and the cutoff sealing performance is greatly improved through the multiple layers of sealing point positions.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body castings, in particular to a precision casting of a gate valve body. Background Art

[0002] The gate valve body is the primary pressure-bearing component of the gate valve, directly connected to the pipeline and forming the flow path for the media. As the core component of the gate valve, the valve body's design and manufacturing quality directly impact the performance and service life of the entire valve. It not only has to withstand the pressure from the pipeline but also ensure the smooth flow of the media.

[0003] The utility model patent with reference authorization announcement number CN216430532U discloses a precision gate valve body casting, including a valve body, connecting pipes are provided on both sides of the valve body, a pair of flanges are provided at one end of the connecting pipes, a fixed block is provided at the upper end of the valve body, and a valve core is provided inside the valve body, a screw is fixedly installed on the top of the valve core, one end of the screw passes through the surface of the fixed block and is connected to a handwheel, a clamping ring is provided inside the handwheel, a first clamping groove is provided inside the clamping ring, a first clamping block is provided at one end of the screw, a second clamping groove is provided inside the blocking cap, the second clamping groove and the first clamping block are engaged with each other, a plurality of second clamping blocks are provided inside the connecting pipe on one side of the valve body, a filter screen is provided inside the connecting pipe, a plurality of third clamping grooves are provided at the edge position of one side of the filter screen, and the second clamping block and the third clamping groove are engaged with each other.

[0004] The valve body provided in the above patent adopts a thread to directly drive the raft core to directly abut the ends of the connecting pipes on both sides, so as to realize the control of the connection state of the connecting pipes. This setting makes it difficult to ensure the sealing when the connecting pipe passage is disconnected, resulting in an unsatisfactory flow control effect of the valve body as a whole. For this reason, we propose a gate valve body precision casting to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a precision casting for a gate valve body.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A precision casting of a gate valve body, comprising a gate valve casting body, an upper support fixedly connected to the upper side of the gate valve casting body, a docking seat screwed onto the upper support, a sealing slide fixedly connected to the upper side of the docking seat, a top seat screwed onto the top of the sealing slide, a transmission assembly is provided inside the gate valve casting body; the transmission assembly comprises a threaded rod, the threaded rod is rotatably connected to the top seat, a slider is slidably installed on the inside of the sealing slide, a threaded groove is provided on the slider, the lower end of the threaded rod is screwed onto the inside of the threaded groove, two lower valve plates are symmetrically fixedly connected to the lower side of the slider, an installation groove is provided on the side of the lower valve plate, a sealing strip is installed inside the installation groove.

[0008] Furthermore, four corner side seats are provided at the four corners of the upper support, and the screw connection points between the upper support and the docking seat pass through the four corner side seats.

[0009] Furthermore, a first inner groove is formed on the inner side of the upper support, and a first sealing ring is installed on the inner side of the first inner groove.

[0010] Furthermore, a second inner groove is provided at the upper end of the sealing slide groove, and a second sealing ring is installed inside the second inner groove.

[0011] Furthermore, transparent tempered glass is installed on the outer wall of the gate valve casting body.

[0012] Furthermore, the upper end of the threaded rod is fixedly connected to a turning handle, and the sealing strip is screwed on the inner side of the mounting groove by means of a small screw, and the outer end of the small screw does not protrude from the outer circle of the sealing strip.

[0013] Furthermore, a docking groove corresponding to the lower valve plate is fixedly installed on the inner wall of the gate valve casting body.

[0014] Furthermore, connecting pipes are symmetrically installed on both sides of the gate valve casting body, a rotating groove is opened on the connecting pipe and an end sealing gasket is provided at the outer end of the connecting pipe, a joint is provided at the end of the connecting pipe, and the joint includes a swivel, which is rotatably connected to the rotating groove and an internal threaded barrel is fixedly installed on the side of the swivel, and a hexagonal edge guard is provided on the outer side of the internal threaded barrel.

[0015] Compared with the related art, the gate valve body precision casting proposed by the present invention has the following beneficial effects:

[0016] In the present invention, a gate valve body precision casting is provided with a transmission assembly inside the gate valve casting body. In the rotating assembly, a threaded rod is used to drive the slider to slide inside the sealing slide groove, thereby driving the lower valve plate on the lower side of the slider to move up and down inside the gate valve casting body, so as to change the port size of the connecting pipe connection passage and realize the flow rate control of the connecting pipe. In addition, two groups of lower valve plates are symmetrically provided on the lower side of the slider, so that when the lower valve plates move to the bottom of the gate valve casting body, two sealing points are formed with the inner side of the gate valve casting body. The multi-layer sealing points have a significant improvement in the flow-cutting sealing performance.

[0017] In addition, an installation groove is opened on the outside of the lower valve plate, and a sealing strip is installed on the inside of the installation groove. When the lower valve plate conflicts with the inner wall of the gate valve casting body, the sealing strip ensures the sealing of the contact point, further improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a precision casting of a gate valve body proposed in the utility model;

[0019] Figure 2 This is a schematic diagram of the full three-dimensional disassembled structure of a precision casting of a gate valve body proposed in the utility model;

[0020] Figure 3 This is a schematic diagram of a partially disassembled structure of a gate valve body precision casting proposed by the present invention;

[0021] Figure 4 for Figure 2 Enlarged schematic diagram of part A.

[0022] In the figure: 1. Gate valve casting body; 11. Docking groove; 2. Transparent tempered glass; 3. Connecting pipe; 31. Rotating groove; 32. End sealing gasket; 4. Joint; 41. Swivel; 42. Internally threaded barrel; 43. Hexagonal edge guard; 5. Upper support; 51. Four-corner side seat; 52. First inner groove; 53. First sealing ring; 6. Docking seat; 7. Sealing slide; 71. Second inner groove; 72. Second sealing ring; 8. Top seat; 9. Transmission assembly; 91. Turning handle; 92. Threaded rod; 93. Slider; 94. Threaded groove; 95. Lower valve plate; 96. Mounting groove; 97. Sealing strip. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0024] Reference Figure 1-4A precision casting of a gate valve body: it includes a gate valve casting body 1, an upper support 5 is fixedly connected to the upper side of the gate valve casting body 1, a docking seat 6 is screwed on the upper support 5, a sealing slide 7 is fixedly connected to the upper side of the docking seat 6, a top seat 8 is screwed on the top of the sealing slide 7, and a transmission component 9 is arranged inside the gate valve casting body 1; the transmission component 9 includes a threaded rod 92, the threaded rod 92 is rotatably connected to the top seat 8, a slider 93 is slidably installed on the inner side of the sealing slide 7, a threaded groove 94 is opened on the slider 93, the lower end of the threaded rod 92 is screwed on the inner side of the threaded groove 94, and two lower valve plates 95 are symmetrically fixedly connected to the lower side of the slider 93, and a mounting groove 96 is opened on the side of the lower valve plate 95, and a sealing strip 97 is installed inside the mounting groove 96.

[0025] By the arrangement in the above manner, the sealing strip 97 installed on the inner side of the mounting groove 96 enables the lower valve plate 95 to contact the inner body of the gate valve casting body 1. The sealing strip 97 makes the contact point have a close contact effect to prevent water leakage. In addition, the entire gate valve casting body 1 and each component on the upper side adopts a detachable screw connection combination, which is convenient for later disassembly to clean the inside of the gate valve casting body 1 and avoid scale and other debris clogging the inside of the gate valve casting body 1.

[0026] In this method, connecting pipes 3 are symmetrically installed on both sides of the gate valve casting body 1, a rotating groove 31 is opened on the connecting pipe 3 and an end sealing gasket 32 ​​is provided at the outer end of the connecting pipe 3, a joint 4 is provided at the end of the connecting pipe 3, and the joint 4 includes a swivel 41, which is rotatably connected to the rotating groove 31 and an internal threaded barrel 42 is fixedly installed on the side of the swivel 41, and a hexagonal edge guard 43 is provided on the outer side of the internal threaded barrel 42.

[0027] Through the above-mentioned arrangement, the internal threaded barrel 42 maintains a rotational connection with the end of the connecting pipe 3 through the swivel 41, and the end sealing gasket 32 ​​provided at the end of the connecting pipe 3 enables the connecting pipe 3 to maintain a sealed connection when being threadedly connected to the external pipe through the internal threaded barrel 42, thereby preventing water leakage.

[0028] In this method, four corner side seats 51 are provided at the four corners of the upper support 5, and the screw connection points between the upper support 5 and the docking seat 6 pass through the four corner side seats 51. A first inner groove 52 is opened on the inner side of the upper support 5, and a first sealing ring 53 is installed inside the first inner groove 52.

[0029] Through the above-mentioned arrangement, the four-corner side seats 51 are arranged on the outer side of the upper support 5, so that the surface area of ​​the first inner groove 52 and the first sealing ring 53 on the inner side of the upper support 5 can be increased as much as possible, thereby increasing the contact area between the first sealing ring 53 and the docking seat 6, and improving the waterproof sealing performance of the upper support 5 and the docking seat 6 after screwing.

[0030] In this embodiment, a second inner groove 71 is formed at the upper end of the sealing slide groove 7 , and a second sealing ring 72 is installed inside the second inner groove 71 .

[0031] By the above-mentioned arrangement, the second sealing ring 72 is provided to ensure the waterproof sealing performance of the threaded connection between the top seat 8 and the upper end of the sealing slide groove 7 .

[0032] In this embodiment, transparent tempered glass 2 is installed on the outer wall of the gate valve casting body 1.

[0033] By configuring in the above manner, it is easy to observe the internal situation of the gate valve casting body 1 and to judge whether the internal situation of the gate valve casting body 1 needs to be cleaned of scale and other debris.

[0034] In this embodiment, the upper end of the threaded rod 92 is fixedly connected to the turning handle 91, and the sealing strip 97 is screwed on the inner side of the mounting groove 96 by means of small screws, and the outer end of the small screws does not protrude from the outer circle of the sealing strip 97.

[0035] By the arrangement in the above manner, the outer end of the small screw does not protrude from the outer ring of the sealing strip 97, and thus the installation position of the sealing strip 97 does not affect the contact with the inner wall of the gate valve casting body 1, thereby ensuring the continuity of the waterproof sealing performance of the sealing strip 97.

[0036] In this embodiment, a docking groove 11 corresponding to the lower valve plate 95 is fixedly mounted on the inner wall of the gate valve casting body 1 .

[0037] By the above arrangement, the docking groove 11 is arranged to be in contact with the lower valve plate 95 , thereby further improving the sealing performance when the lower valve plate 95 abuts against the inner wall of the gate valve casting body 1 .

[0038] The working principle of the gate valve body precision casting provided by the utility model is as follows:

[0039] When in use, the joints 4 at the ends of the connecting pipes 3 on both sides of the gate valve casting body 1 are screwed and installed on the external pipeline to complete the installation of the gate valve casting body 1. At this time, the gate valve casting body 1 can control the opening and closing of the connecting pipeline. Turning the handle 91 can drive the threaded rod 92 to rotate, and the threaded rod 92 is used to drive the slider 93 to slide inside the sealing groove 7, thereby driving the lower valve plate 95 set on the lower side of the slider 93 to move inside the gate valve casting body 1, further changing the radial flow area inside the gate valve casting body 1, and thus changing the radial flow inside the gate valve casting body 1.

[0040] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A precision casting of a gate valve body, characterized in that: The gate valve casting body (1) comprises an upper support (5) fixedly connected to the upper side of the gate valve casting body (1), a docking seat (6) screwed on the upper side of the upper support (5), a sealing slide (7) fixedly connected to the upper side of the docking seat (6), a top seat (8) screwed on the top of the sealing slide (7), and a transmission assembly (9) provided inside the gate valve casting body (1); The transmission assembly (9) includes a threaded rod (92), the threaded rod (92) is rotatably connected to the top seat (8), a slider (93) is slidably installed on the inner side of the sealing slide groove (7), a threaded groove (94) is provided on the slider (93), the lower end of the threaded rod (92) is screwed to the inner side of the threaded groove (94), and two lower valve plates (95) are symmetrically fixedly connected to the lower side of the slider (93), the side of the lower valve plate (95) is provided with a mounting groove (96), and a sealing strip (97) is installed on the inner side of the mounting groove (96).

2. A gate valve body precision casting according to claim 1, characterized in that: Four corner side seats (51) are provided at the four corners of the upper support (5), and the screw connection points between the upper support (5) and the docking seat (6) pass through the four corner side seats (51).

3. The gate valve body precision casting according to claim 1, characterized in that: A first inner groove (52) is provided on the inner side of the upper support (5), and a first sealing ring (53) is installed on the inner side of the first inner groove (52).

4. The gate valve body precision casting according to claim 1, characterized in that: A second inner groove (71) is provided at the upper end of the sealing slide groove (7), and a second sealing ring (72) is installed inside the second inner groove (71).

5. The gate valve body precision casting according to claim 1, characterized in that: Transparent tempered glass (2) is installed on the outer wall of the gate valve casting body (1).

6. The gate valve body precision casting according to claim 1, characterized in that: The upper end of the threaded rod (92) is fixedly connected to the turning handle (91), and the sealing strip (97) is screwed on the inner side of the mounting groove (96) by means of a small screw, and the outer end of the small screw does not protrude from the outer circle of the sealing strip (97).

7. The gate valve body precision casting according to claim 1, characterized in that: A docking groove (11) corresponding to the lower valve plate (95) is fixedly mounted on the inner wall of the gate valve casting body (1).

8. The gate valve body precision casting according to claim 1, characterized in that: Connecting pipes (3) are symmetrically mounted on both sides of the gate valve casting body (1), a rotating groove (31) is provided on the connecting pipe (3), and an end sealing gasket (32) is provided at the outer end of the connecting pipe (3), and a joint (4) is provided at the end of the connecting pipe (3), and the joint (4) includes a rotating ring (41), the rotating ring (41) is rotatably connected to the rotating groove (31), and an internal threaded barrel (42) is fixedly mounted on the side of the rotating ring (41), and a hexagonal edge guard (43) is provided on the outer side of the internal threaded barrel (42).

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