Novel knife-shaped gate valve

Abstract

The utility model belongs to the technical field of metal precision casting, and particularly relates to a novel knife type gate valve which comprises a support, a water inlet formed in the support, a gate plate arranged on the support in a sliding mode and a pressing plate arranged on the support in a sliding mode, and the gate plate is suitable for blocking the water inlet; the bottom of the pressing plate is attached to the bottom of the flashboard so that the flashboard can be leveled through the pressing plate. The pressing plate is arranged, the flashboard is leveled through back-and-forth opening and closing of the flashboard, and the flashboard is prevented from deforming due to the pressure of fluid on the flashboard.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal precision casting, and specifically relates to a novel knife-type gate valve. Background Art

[0002] Knife gate valve is also called knife gate valve, knife slurry valve, its opening and closing parts are gates, the movement direction of the gate is perpendicular to the direction of the fluid. Knife gate valve is based on ordinary gate valve, the flat gate is replaced by knife gate. When the existing knife gate valve is closed, the fluid has a certain thrust on the gate. After long-term use, the gate will deform, causing the knife gate valve to lose its working effect, and the fluid will flow out from between the gate and the support. Utility Model Content

[0003] The utility model aims to provide a new knife-type gate valve to solve the above technical problems. The utility model provides a new knife-type gate valve, comprising a support, a water inlet opened on the support, a gate plate slidably arranged on the support, and a pressure plate slidably arranged on the support, wherein the gate plate is suitable for blocking the water inlet; the bottom of the pressure plate is in contact with the bottom of the gate plate, so that the pressure plate flattens the gate plate.

[0004] Furthermore, the water inlet is enclosed by a baffle, and the baffle is fixedly arranged on the support.

[0005] Furthermore, a roller is rotatably provided on the side wall of the support, and the distance between the roller and the baffle is adapted to the thickness of the gate plate, so that the gate plate can slide between the baffle plate and the roller.

[0006] Furthermore, a sealing gasket is provided on the end surface of the baffle.

[0007] Furthermore, a hinged seat is fixedly arranged on the gate plate, and a cylinder is fixedly arranged on the support, wherein:

[0008] The piston rod of the cylinder is hingedly arranged on the hinge seat.

[0009] Furthermore, a sliding groove is provided on the side wall of the support, the pressing plate is slidably arranged in the sliding groove, and the pressing plate is provided with a through hole suitable for the piston rod to pass through.

[0010] Furthermore, fixing plates are provided on both sides of the support, guide rods are fixedly provided between the fixing plates, and guide holes adapted to the guide rods are also opened on both sides of the pressure plate, wherein the pressure plate is slidably provided on the guide rods through the guide holes.

[0011] Furthermore, a spring is sleeved on the guide rod, one end of the spring abuts against the pressure plate, and the other end of the spring abuts against a fixed plate close to one end of the cylinder.

[0012] Furthermore, a cross bar is provided on the support, and the cylinder is fixedly arranged on the cross bar.

[0013] Furthermore, an adjustment mechanism is also provided on the support, and the adjustment structure includes an adjustment seat fixedly provided on the support and an adjustment rod threadedly connected to the adjustment seat, wherein the adjustment rod is arranged through the cross bar to be suitable for supporting the pressure plate.

[0014] Beneficial effects of the utility model:

[0015] The utility model is provided with a pressing plate, and the gate plate is leveled by opening and closing the gate plate back and forth, so as to prevent the gate plate from being deformed due to the pressure of the fluid on the gate plate.

[0016] The utility model effectively prevents the gate plate from shaking during the opening and closing process by setting the pressure plate, thereby improving the stability of the gate plate.

[0017] The utility model effectively solves the problem that when the cylinder extends the piston rod, the piston rod is deformed due to the excessive length of the piston rod through the arrangement of the pressing plate.

[0018] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is the first schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is the second schematic diagram of the overall structure of the utility model;

[0023] Figure 3 This is the third schematic diagram of the overall structure of the utility model.

[0024] In the figure:

[0025] Support, 110, water inlet, 120, gate, 130, pressure plate, 140, baffle, 141, sealing gasket, 150, roller, 160, hinged seat, 170, cylinder, 171, piston rod, 180, slide groove, 181, fixing plate, 182, guide rod, 183, spring, 190, cross bar, 200, adjusting mechanism, 201, adjusting seat, 202, adjusting rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1, as Figure 1 As shown, the novel knife-type gate valve of this embodiment comprises a support 100, a water inlet 110 opened on the support 100, a gate 120 slidably arranged on the support 100, and a pressure plate 130 slidably arranged on the support 100, wherein the gate 120 is suitable for blocking the water inlet 110; the bottom of the pressure plate 130 is in contact with the bottom of the gate 120, so that the pressure plate 130 flattens the gate 120. The knife-type gate valve is used to control the on-off of the fluid. The movement direction of the gate 120 is perpendicular to the direction of the fluid, which causes the gate 120 to bear the pressure of the fluid. After long-term use, the gate 120 will be deformed due to the pressure, resulting in sealing failure. In the process of the gate 120 opening and closing back and forth, the pressure plate 130 flattens the gate 120 to prevent the gate 120 from being deformed by the pressure of the fluid on the gate 120, which eventually leads to the failure of the sealing effect.

[0028] The water inlet 110 is enclosed by a baffle 140, and the baffle 140 is fixedly arranged on the support 100. A roller 150 is also rotatably arranged on the side wall of the support 100, and the distance between the roller 150 and the baffle 140 is adapted to the thickness of the gate 120, so that the gate 120 can slide between the baffle 140 and the roller 150, thereby improving the stability of the movement of the gate 120. In order to improve the sealing between the gate 120 and the baffle 140, a sealing gasket 141 is also arranged on the end surface of the baffle 140.

[0029] In order to drive the gate 120 to reciprocate, a hinge seat 160 is fixedly provided on the gate 120, and a cylinder 170 is fixedly provided on the support 100. The piston rod 171 of the cylinder 170 is hinged on the hinge seat 160, so that the piston rod 171 of the cylinder 170 extends out, that is, the gate 120 can be pushed to move back and forth. A cross bar 190 is provided on the support 100, and the cylinder 170 is fixedly provided on the cross bar 190. Here, the structure of the hinge seat 160 is adopted to avoid that the movement direction of the piston rod 171 and the point where the piston rod 171 is hinged with the hinge seat 160 are not on the same horizontal plane, resulting in the gate 120 being unable to open and close normally horizontally. A waterproof plate is also provided at the end of the gate 120 to prevent the fluid from rushing through the gate 120 and splashing above the gate 120 when the gate 120 is opened.

[0030] A slide groove 180 is provided on the side wall of the support 100, and the pressure plate 130 is slidably arranged in the slide groove 180. A through hole suitable for the piston rod 171 to pass through is provided on the pressure plate 130. The size of the through hole is smaller than the size of the hinge seat 160 to prevent the hinge seat 160 from passing through the through hole. Fixed plates 181 are also provided on both sides of the support 100, and a guide rod 182 is fixedly arranged between the fixed plates 181. Guide holes adapted to the guide rod 182 are also provided on both sides of the pressure plate 130, wherein the pressure plate 130 is slidably arranged on the guide rod 182 through the guide holes. A spring 183 is sleeved on the guide rod 182, and one end of the spring 183 abuts against the pressure plate 130, and the other end abuts against the fixed plate 181 near one end of the cylinder 170. When the gate 120 moves toward the cylinder 170, that is, when the water inlet 110 is opened, the hinge seat 160 drives the pressure plate 130 to move toward the cylinder 170, and the pressure plate 130 squeezes the spring 183 and flattens the gate 120. The pressure plate 130 is arranged on the side opposite to the water inlet 110. The force of the fluid on the gate 120 causes the gate pressure plate 130 to be concave toward the pressure plate 130, that is, the gate 120 bulges toward the side close to the pressure plate 130. At this time, the pressure plate 130 can flatten the gate 120 to ensure the flatness of the gate 120, thereby improving the sealing performance. When the gate 120 moves away from the cylinder 170, that is, when the water inlet 110 is closed, the spring 183 squeezes the pressure plate 130, so that the pressure plate 130 is reset to the initial position. During the reset process, the pressure plate 130 can flatten the gate 120.

[0031] The initial position of the pressure plate 130 is located at the middle position when the gate 120 is closed, so that when the gate 120 is closed, it is subjected to the impact of the fluid, and the pressure plate 130 squeezes the gate 120 to offset the impact of the fluid, thereby reducing the deformation probability of the gate 120.

[0032] The support 100 is also provided with an adjustment mechanism 200, and the adjustment structure includes an adjustment seat 201 fixedly provided on the support 100 and an adjustment rod 202 threadedly connected to the adjustment seat 201, wherein the adjustment rod 202 is provided through the cross bar 190 to be suitable for resisting the pressing plate 130. The length of the adjustment rod 202 extending out of the cross bar 190 is greater than the length from the pressing plate 130 to the cross bar 190. If the length of the adjustment rod 202 extending out of the cross bar 190 is less than the length from the pressing plate 130 to the cross bar 190, the adjustment rod 202 cannot resist the pressing plate 130, and thus cannot play an adjustment role. The adjustment rod 202 adjusts the distance between the pressing plate 130 and the cross bar 190, that is, adjusts the opening size of the water inlet 110, thereby adjusting the water intake.

[0033] All devices (parts without specific structure) selected in this application are universal standard parts or parts known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or conventional experimental methods. In addition, the software programs involved in this application are all prior art, and this application does not involve any improvement to the software programs.

[0034] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0037] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0038] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0039] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A new type of knife-type gate valve, characterized in that: include: A support, a water inlet opened on the support, a gate slidably arranged on the support, and a pressure plate slidably arranged on the support, wherein: The gate is suitable for blocking the water inlet; The bottom of the pressing plate is in contact with the bottom of the gate plate so that the pressing plate can level the gate plate.

2. The new knife-type gate valve according to claim 1 is characterized in that: The water inlet is enclosed by a baffle, and the baffle is fixedly arranged on the support.

3. The new knife-type gate valve according to claim 2 is characterized in that: A roller is rotatably arranged on the side wall of the support, and the distance between the roller and the baffle is adapted to the thickness of the gate plate, so that the gate plate can slide between the baffle plate and the roller.

4. The new knife-type gate valve according to claim 3 is characterized in that: A sealing gasket is arranged on the end surface of the baffle.

5. The new knife-type gate valve according to claim 1 is characterized in that: The gate plate is fixedly provided with an articulated seat, and the support is fixedly provided with a cylinder, wherein: The piston rod of the cylinder is hingedly arranged on the hinge seat.

6. The new knife-type gate valve according to claim 5 is characterized in that: A slide groove is provided on the side wall of the support, and the pressing plate is slidably arranged in the slide groove, and, The pressing plate is provided with a through hole suitable for the piston rod to pass through.

7. The new knife-type gate valve according to claim 6 is characterized in that: The support is also provided with fixing plates on both sides, and guide rods are fixedly provided between the fixing plates. Guide holes adapted to the guide rods are also provided on both sides of the pressure plate, wherein: The pressing plate is slidably arranged on the guide rod through the guide hole.

8. The novel knife-type gate valve according to claim 7 is characterized in that: A spring is sleeved on the guide rod, one end of the spring abuts against the pressure plate, and the other end abuts against a fixing plate close to one end of the cylinder.

9. The novel knife-type gate valve according to claim 8 is characterized in that: The support is provided with a cross bar, and the cylinder is fixedly arranged on the cross bar.

10. The novel knife-type gate valve according to claim 9 is characterized in that: The support is also provided with an adjustment mechanism, which includes an adjustment seat fixedly provided on the support and an adjustment rod threadedly connected to the adjustment seat, wherein: The adjusting rod is arranged through the cross bar to be suitable for abutting against the pressing plate.

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