Gate valve with double-sealing structure for preventing impurity precipitation

Abstract

The gate valve comprises a valve body structure of a base, a stirring structure is installed in the valve body structure, the valve body structure comprises a valve body assembly for installing a valve element assembly, and the valve body assembly comprises a valve body with a through body embedded in the lower portion. A filter screen is installed in the valve body, a connecting hole is formed in the penetrating body, a rubber block is rotatably installed on the penetrating body through the connecting hole, a connecting pin and a torsional spring, a sealing block is installed on the upper portion of the valve body in a filling mode, a conveying pipe connected with the penetrating body in a penetrating mode is embedded in the bottom of the valve body in a penetrating mode, and a gate valve body is fixedly installed on the upper portion of the valve body. The valve element assembly comprises a valve element body, a first spline cylinder is fixed to the interior of the valve element body, a U-shaped pipe with a through hole is embedded in the bottom of the valve element body in a penetrating mode, and the gate valve with the impurity precipitation prevention double-sealing structure achieves elastic recovery through the arranged torsional spring.

Description

Technical Field

[0001] The invention relates to the technical field of gate valves, in particular to a gate valve with a double sealing structure for preventing impurities from settling. Background Art

[0002] Gate valves are currently the most important type of valves, and are widely used in the fields of petroleum, petrochemicals, chemicals, metallurgy, electricity, water conservancy, plumbing, urban construction, fire protection, machinery, coal, food, ships, power stations, marine engineering, etc. Usually, a gate valve includes a valve body, the lower part of which has an inlet and an outlet, and the left end of the inlet and the right end of the outlet both have sealing surfaces, and a valve plate that can move up and down and does not rotate is provided in dynamic sealing cooperation between the two sealing surfaces, and a valve stem is connected to the upper part of the valve plate, and a handle is connected to the upper part of the valve stem through a screw nut mechanism. After the handle is rotated, the valve stem is driven to move up and down through the screw nut mechanism, and then the valve plate moves up and down to seal or open the two sealing inclined surfaces, and finally the inlet and outlet are connected or cut off. With the development of gate valve technology, in order to maintain a better seal, the manufacturer prepares both sealing surfaces as inclined surfaces, and the corresponding valve plates are prepared as The wedge-shaped small end is downward, which greatly improves the sealing effect of the gate valve. The valve plate will wear out after long-term use, and the sealing effect will be greatly reduced, causing valve leakage. When the valve plate is damaged and leaks during the use of the existing gate valve, it is necessary to stop the entire pipeline or equipment, remove the gate valve to repair or replace the valve plate, which affects production efficiency, and many working conditions do not allow equipment to be shut down. Once the equipment is shut down, it will cause significant economic losses. In addition, after the existing gate valve is closed, impurities entering the gate valve will precipitate. When the impurities are in the precipitated state for a long time, they are easy to adhere to the inner wall of the gate valve, which can easily cause blockage inside the gate valve. Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies of the prior art and provide a gate valve with a double sealing structure to prevent impurity precipitation, so as to solve the problem proposed in the above background technology that when the valve plate of the existing gate valve is damaged and causes leakage during use, it is necessary to stop the entire pipeline or equipment, remove the gate valve for valve plate repair or replacement, which affects production efficiency, and many working conditions do not allow equipment to be shut down. Once the equipment is shut down, it will cause significant economic losses. In addition, after the existing gate valve is closed, impurities entering the inside of the gate valve will be precipitated. When the impurities are in the precipitated state for a long time, they are easy to adhere to the inner wall of the gate valve, which can easily cause blockage inside the gate valve.

[0004] To achieve the above object, the present invention provides the following technical solution: a gate valve with a double sealing structure for preventing impurity precipitation, comprising a valve body structure of a base, wherein a stirring structure is installed inside the valve body structure;

[0005] The valve body structure includes a valve body assembly installed on the valve core assembly, and the valve body assembly includes a valve body with a through body embedded and installed below, and a filter screen is installed inside the valve body;

[0006] The through body is provided with a connecting hole, and a rubber block is rotatably mounted on the through body through the connecting hole, the connecting pin and the torsion spring, and a sealing block is filled and mounted above the valve body.

[0007] By adopting the above technical solution, elastic recovery is achieved through the torsion spring.

[0008] Preferably, a delivery pipe which is inlaid and connected with the through body is installed at the bottom of the valve body, and a gate valve body is fixedly installed above the valve body.

[0009] By adopting the above technical solution, the gate valve body is arranged to achieve supporting fixed installation.

[0010] Preferably, the valve core assembly includes a valve core body with a first spline cylinder fixed inside, and a U-shaped tube with a through hole is embedded and installed through the bottom of the valve core body, and a ball valve core body is rotatably installed inside the U-shaped tube through a bearing seat, and a second spline cylinder is fixed above the ball valve core body.

[0011] By adopting the above technical solution, the U-shaped tube is provided to achieve opening and fixed installation.

[0012] Preferably, a convex body with another rubber block at the bottom is fixed above the valve core body, and a mounting bearing is fixed above the convex body. At the same time, a bearing frame is fixed on the surface of the mounting bearing, and a handwheel screw with a hollow structure inside is fixed above the bearing frame, and a handwheel rod is slidably installed inside the handwheel screw.

[0013] By adopting the above technical solution, fixed installation is achieved through the provided convex body.

[0014] Preferably, a first spline shaft is fixed to the bottom of the handwheel rod, and a second spline shaft is fixed to the bottom of the first spline shaft. At the same time, the first spline shaft and the second spline shaft are respectively matched with the first spline cylinder and the second spline cylinder. The valve core body is lifted and installed inside the gate valve body by a handwheel screw.

[0015] By adopting the above technical solution, the hand wheel rod is provided to achieve pulling and lifting.

[0016] Preferably, the stirring structure includes a through-hole bearing plate fixed inside the valve body, and the through-hole bearing plate is rotatably installed with an impeller through a connecting shaft, and an active meshing gear is fixed to one end of the connecting shaft, the active meshing gear is meshingly connected with the driven meshing gear, and the driven meshing gear is fixedly connected to the auger rod, and the auger rod is fixedly installed on the inner wall of the valve body by installing a bearing frame, and a cleaning cover is fixed to one end of the connecting shaft.

[0017] By adopting the above technical solution, the auger rod is provided to drive the rotation.

[0018] Preferably, the overall shape of the rubber block is half a circle.

[0019] By adopting the technical solution, the rubber block is arranged to achieve an extrusion seal.

[0020] Preferably, the delivery pipes are provided in one group, and the delivery pipes are symmetrically arranged about the axis of the through body.

[0021] By adopting the above technical solution, the provided conveying pipe can be embedded and connected.

[0022] Preferably, the overall shape of the valve core body is a "square cone" structure.

[0023] By adopting the above technical solution, the valve core body is provided to achieve internal fixing and lifting and lowering adjustment.

[0024] Compared with the prior art, the present invention has the following beneficial effects: the gate valve with a double sealing structure for preventing impurities from settling,

[0025] (1) This case solves the problem that when the valve plate of the existing gate valve is damaged and leaks during use, the entire pipeline or equipment needs to be stopped, and the gate valve needs to be removed to repair or replace the valve plate, which affects production efficiency. In addition, many working conditions do not allow equipment to be shut down. Once the equipment is shut down, it will cause significant economic losses. When one side of the valve core body is damaged, the operator holds the handwheel rod to drive the first spline shaft to move upward under force. At this time, the first spline shaft and the first spline cylinder are connected by sliding. At this time, the operator turns the handwheel rod to drive the valve core body to rotate synchronously. When the valve core body is rotated under force, the undamaged side of the valve core body and the rubber block are squeezed under force, thereby connecting and squeezing the valve body and avoiding the above-mentioned problems;

[0026] (2) The valve body structure is provided with: rubber block, sealing block and convex body, so as to solve the problem that the valve body is easy to cause poor sealing when the valve plate is damaged and leaks. When the valve core body and the rubber block are squeezed, the rubber block covers and seals the filter screen. When the valve core body and the rubber block are squeezed, the sealing block and the convex body are also in a sealing and squeezing state. When the sealing block and the convex body are squeezed, the valve body is subjected to two-level sealing treatment;

[0027] (3) By setting up: a stirring structure, the problem that impurities entering the gate valve after closing will settle is solved. When the impurities are in the sedimentation state for a long time, they are easy to adhere to the inner wall of the gate valve and cause blockage inside the gate valve. When liquid enters the valve body, the impeller is driven to rotate. When the impeller is driven to rotate, the active meshing gear and the driven meshing gear are driven to rotate, and the auger rod is driven to rotate synchronously, thereby rotating and stirring the impurities entering the valve body. By rotating and stirring the impurities inside the valve body, the precipitation of impurities is avoided;

[0028] (4) The valve core assembly is provided with: a U-shaped tube, a ball valve core, a second spline cylinder and a second spline shaft, thereby solving the problem that the flow range of most gate valves currently varies greatly during flow regulation, especially under conditions of small flow. However, the industrial production industry requires accurate flow values, so continuous adjustment is required to achieve the required flow value. The adaptability of gate valves is increasingly difficult to meet market demand. When the gate valve requires small flow control, the operator rotates the ball valve core when the second spline cylinder and the second spline shaft are matched and connected, and the ball valve core is driven to rotate to open the U-shaped tube. When the U-shaped tube is in the open state, the small flow of liquid can be fine-tuned and controlled;

[0029] (5) The filter screen provided in the valve body assembly can solve the problem that impurities may enter the gate valve during use, which may cause the gate plate to wear and cause poor sealing;

[0030] (6) The through body, rubber block and torsion spring are arranged in the valve body assembly, thereby increasing the extrusion sealing between the valve body and the valve core body. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the valve body structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the through body, valve body, filter screen, rubber block, sealing block, delivery pipe and gate valve body of the present invention;

[0034] Figure 4 It is a schematic diagram of the through-body structure of the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the torsion spring of the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the valve core body, U-shaped tube, ball valve core body, convex body, mounting bearing, bearing frame, handwheel screw rod and handwheel rod of the present invention;

[0037] Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle;

[0038] Figure 8 It is a schematic diagram of the convex structure of the present invention;

[0039] Fig. 9 It is a schematic diagram of the stirring structure of the present invention.

[0040] In the figure: 1. valve body structure; 101. valve body assembly; 1011. through body; 1012. valve body; 1013. filter screen; 1014. torsion spring; 1015. rubber block; 1016. sealing block; 1017. delivery pipe; 1018. gate valve body; 102. valve core assembly; 1021. valve core body; 1022. first spline cylinder; 1023. U-shaped tube; 1024. ball valve core body; 1025. second spline cylinder; 1 026, convex body; 1027, bearing installation; 1028, bearing frame; 1029, handwheel screw; 10210, handwheel rod; 10211, first spline shaft; 10212, second spline shaft; 2, stirring structure; 201, through-hole bearing plate; 202, connecting shaft; 203, impeller; 204, active meshing gear; 205, driven meshing gear; 206, auger rod; 207, bearing frame installation; 208, cleaning cover. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-9 The present invention provides a technical solution: a gate valve with a double sealing structure to prevent impurities from settling, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the valve body structure 1 includes a base, the valve body structure 1 includes a valve body assembly 101 installed on the valve core assembly 102, and the valve body assembly 101 includes a valve body 1012 with a through body 1011 embedded and installed below, and a filter screen 1013 is installed inside the valve body 1012, the through body 1011 is provided with a connecting hole, and the through body 1011 is rotatably installed with a rubber block 1015 through the connecting hole, the connecting pin and the torsion spring 1014, and the overall shape of the rubber block 1015 is set in half a circle. When the overall shape of the above-mentioned parts is set in half a circle This not only reflects the covering sealing of the above-mentioned components, but also reflects the extrusion sealing of the above-mentioned components. When the overall shape of the above-mentioned components is set in half a circle, the elastic rotation adjustability of the installation of the above-mentioned components is reflected, and the axial and longitudinal axis symmetry of the above-mentioned components is reflected. At the same time, a sealing block 1016 is filled and installed above the valve body 1012, wherein the above-mentioned components constitute a rotation adjustment structure. When the rotation adjustment structure constituted by the above-mentioned components is used, the rubber block 1015 is effectively elastically closed and elastically restored to open.

[0043] The above scheme further has a delivery pipe 1017 inlaid and installed on the bottom of the valve body 1012, which is connected to the through body 1011. A group of delivery pipes 1017 are provided, and the delivery pipes 1017 are symmetrically arranged about the axis of the through body 1011. When the above components are provided in a group of two, the inlaid through connectivity of the above components is reflected, and the inlaid through delivery of the above components is also reflected. When the above components are provided in a group of two, the practicality and axis symmetry of the installation of the above components are reflected. When the above components are provided in a group of two, the axis symmetry of the installation of the above components is simultaneously reflected. A gate valve body 1018 is fixedly installed above the valve body 1012.

[0044] like Figure 6 , Figure 7 and Figure 8As shown, the valve core assembly 102 includes a valve core body 1021 with a first spline cylinder 1022 fixed inside, and the overall shape of the valve core body 1021 is a "square cone" structure. When the overall shape of the above-mentioned parts is a "square cone" structure, the lifting and lowering adjustability of the installation and arrangement of the above-mentioned parts is reflected, and the lifting and lowering adjustment extrusion sealing of the above-mentioned parts is reflected. When the overall shape of the above-mentioned parts is a "square cone" structure, the adjustability of the installation and arrangement of the above-mentioned parts and the lifting and lowering adjustment opening and closing properties are reflected. A U-shaped tube 1023 with a through hole is embedded and installed at the bottom of the valve core body 1021, and a ball valve core body 1024 is rotatably installed inside the U-shaped tube 1023 through a bearing seat. A second spline cylinder 1025 is fixed above the ball valve core body 1024, and a convex body 1026 with another rubber block 1015 at the bottom is fixed above the valve core body 1021, and the convex body 1 A mounting bearing 1027 is fixed above 026, and a bearing frame 1028 is fixed on the surface of the mounting bearing 1027. A handwheel screw 1029 with a hollow structure inside is fixed above the bearing frame 1028, and a handwheel rod 10210 is slidably installed inside the handwheel screw 1029. A first spline shaft 10211 is fixed to the bottom of the handwheel rod 10210, and a second spline shaft 10212 is fixed to the bottom of the first spline shaft 10211. At the same time, the first spline shaft 10211 and the second spline shaft 10212 are respectively matched with the first spline cylinder 1022 and the second spline cylinder 1025. The valve core body 1021 is lifted and installed inside the gate valve body 1018 by the handwheel screw 1029. Among them, the above-mentioned parts constitute a matching rotation adjustment structure, and the rotation matching structure constituted by the above-mentioned parts can effectively perform rotation adjustment on the valve core body 1021 and the ball valve core body 1024.

[0045] like Fig. 9 As shown, a stirring structure 2 is installed inside the valve body structure 1, and the stirring structure 2 includes a through-hole bearing plate 201 fixed inside the valve body 1012, and the through-hole bearing plate 201 is rotatably installed with an impeller 203 through a connecting shaft 202, and an active meshing gear 204 is fixed at one end of the connecting shaft 202, the active meshing gear 204 is meshed and connected with a driven meshing gear 205, and the driven meshing gear 205 is fixedly connected to an auger rod 206, and the auger rod 206 is fixedly installed on the inner wall of the valve body 1012 by installing a bearing frame 207, and a cleaning cover 208 is fixed at one end of the connecting shaft 202, wherein the above-mentioned components constitute a rotary stirring cleaning structure, and the rotary stirring cleaning structure constituted by the above-mentioned components can effectively perform rotary stirring and rotary rotation cleaning treatment on the inside of the valve body 1012.

[0046] In the above scheme, when a small flow needs to be controlled, the operator manually presses the handwheel rod 10210 to drive the first spline shaft 10211 and the second spline shaft 10212 to move under force, so that the second spline shaft 10212 is matched with the second spline cylinder 1025 and connected, and the handwheel rod 10210 is turned to drive the ball valve core body 1024 to open for convenient adjustment and control of the micro flow. When a large flow is controlled, the operator turns the handwheel screw 1029 to drive the valve core body 1021 to move upward. When the valve core body 1021 moves upward, the torsion spring 1014 elastically recovers to open the rubber block 1015, which facilitates the external liquid to enter the valve body 1012. When the liquid drives the impeller 203, the connecting shaft 202 and the active meshing gear 204 to rotate under force, when the active meshing gear 204 is turned, the impeller 203, the connecting shaft 202 and the active meshing gear 204 are rotated under force. When the engaging gear 204 is rotated under force, it drives the driven meshing gear 205, the auger rod 206 and the cleaning cover 208 to rotate synchronously under force, so as to rotate and clean the filter screen 1013 and the valve body 1012 and stir the impurities. When one side of the valve core body 1021 is damaged, the operator holds the handwheel rod 10210 to drive the first spline shaft 10211 to move upward under force. At this time, the first spline shaft 10211 is slidably connected with the first spline cylinder 1022. At this time, the operator turns the handwheel rod 10210 to drive the valve core body 1021 to rotate synchronously. When the valve core body 1021 is rotated under force, the undamaged side of the valve core body 1021 and the rubber block 1015 are squeezed under force, thereby connecting and squeezing the valve body 1012. Seal.

[0047] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gate valve with a double sealing structure to prevent impurity precipitation, characterized in that: A valve body structure (1) comprising a base, wherein a stirring structure (2) is installed inside the valve body structure (1); The valve body structure (1) comprises a valve body assembly (101) mounted on a valve core assembly (102), and the valve body assembly (101) comprises a valve body (1012) with a through body (1011) embedded and mounted below, and a filter screen (1013) is installed inside the valve body (1012); The through body (1011) is provided with a connecting hole, and a rubber block (1015) is rotatably installed on the through body (1011) through the connecting hole, the connecting pin and the torsion spring (1014), and a sealing block (1016) is filled and installed above the valve body (1012).

2. The gate valve with a double sealing structure for preventing impurities from settling according to claim 1, characterized in that: A delivery pipe (1017) which is inlaid and connected to the through body (1011) is installed through the bottom of the valve body (1012), and a gate valve body (1018) is fixedly installed above the valve body (1012).

3. The gate valve with a double sealing structure for preventing impurities from settling according to claim 1, characterized in that: The valve core assembly (102) includes a valve core body (1021) having a first spline cylinder (1022) fixed therein, and a U-shaped tube (1023) with a through hole is embedded and installed through the bottom of the valve core body (1021), and a ball valve core body (1024) is rotatably installed inside the U-shaped tube (1023) through a bearing seat, and a second spline cylinder (1025) is fixed above the ball valve core body (1024).

4. The gate valve with a double sealing structure for preventing impurities from settling according to claim 3 is characterized in that: A protrusion (1026) with another rubber block (1015) at the bottom is fixed above the valve core body (1021), and a mounting bearing (1027) is fixed above the protrusion (1026). A bearing frame (1028) is fixed on the surface of the mounting bearing (1027), and a handwheel screw rod (1029) with a hollow structure inside is fixed above the bearing frame (1028), and a handwheel rod (10210) is slidably mounted inside the handwheel screw rod (1029).

5. The gate valve with a double sealing structure for preventing impurities from settling according to claim 4, characterized in that: A first spline shaft (10211) is fixed to the bottom of the handwheel rod (10210), and a second spline shaft (10212) is fixed to the bottom of the first spline shaft (10211). The first spline shaft (10211) and the second spline shaft (10212) are respectively matched with the first spline cylinder (1022) and the second spline cylinder (1025). The valve core body (1021) is lifted and installed inside the gate valve body (1018) by a handwheel screw rod (1029).

6. The gate valve with a double sealing structure for preventing impurities from settling according to claim 1, characterized in that: The stirring structure (2) includes a through-hole bearing plate (201) fixed inside the valve body (1012), and the through-hole bearing plate (201) is rotatably mounted with an impeller (203) via a connecting shaft (202), and an active meshing gear (204) is fixed to one end of the connecting shaft (202), the active meshing gear (204) is meshingly connected with a driven meshing gear (205), and the driven meshing gear (205) is fixedly connected to an auger rod (206), and the auger rod (206) is fixedly mounted on the inner wall of the valve body (1012) via a bearing frame (207), and a cleaning cover (208) is fixed to one end of the connecting shaft (202).

7. The gate valve with a double sealing structure for preventing impurities from settling according to claim 1, characterized in that: The overall shape of the rubber block (1015) is arranged in the form of a half circle.

8. The gate valve with a double sealing structure for preventing impurities from settling according to claim 2, characterized in that: The delivery pipes (1017) are provided in a group, and the delivery pipes (1017) are symmetrically arranged with respect to the axis of the through body (1011).

9. The gate valve with a double sealing structure for preventing impurities from settling according to claim 3, characterized in that: The valve core body (1021) is in the form of a "square cone" structure.

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