CN220337514U - Novel mechanical anti-theft gate valve - Google Patents

Abstract

The utility model discloses a novel mechanical anti-theft gate valve, which structurally comprises a valve body and a valve cover, wherein the valve cover is arranged at the top end of the valve body, a valve rod is arranged in the valve cover, the bottom end of the valve rod is connected with a valve plate in the valve body, a trapezoidal head is arranged at the bottom end of the valve rod, a trapezoidal groove with the shape matched with that of the trapezoidal head is arranged at the top end of the valve plate, a limiting pin is arranged at the bottom end of the trapezoidal head, a limiting groove is arranged at the position corresponding to the limiting pin at the bottom end of the trapezoidal head, and filling gaskets are arranged at two gaps between the top surface of the trapezoidal head and the trapezoidal groove.

Description

Novel mechanical anti-theft gate valve

Technical Field

The utility model relates to the field of valves, in particular to a novel mechanical anti-theft gate valve.

Background

The gate valve is a device for controlling water flow through an opening and closing piece, a hand wheel is rotated to drive a valve rod to move, and the valve rod is used for driving a valve plate to move upwards or fall down, so that opening and closing operations are carried out in a valve body.

In the prior art, for facilitating subsequent disassembly and maintenance, a valve rod and a valve plate of most gate valves are connected in a nested manner through a trapezoidal head and a trapezoidal groove, but when the gate valve is used, the degree of freedom in the directions of a Z axis and an X axis (or a Y axis) is limited only between the trapezoidal head and the trapezoidal groove, and the degree of freedom in the directions of the Y axis (or the X axis) is not limited for sliding nested installation, so that when the valve is used, if the valve is excessively closed with excessive force in the closing process, the valve is excessively closed, and at the moment, the valve rod and the valve plate slide mutually to form a staggered condition, so that the valve plate is clamped, the valve rod and the valve plate fall off when the valve is opened, normal use of equipment is affected, and the condition of pipeline blockage can occur, thereby causing trouble to investigation work of maintenance staff.

Disclosure of Invention

The utility model provides a novel mechanical anti-theft gate valve aiming at the problems.

In order to achieve the above object, the present utility model is realized by the following technical scheme: the utility model provides a novel mechanical anti-theft gate valve, its structure includes valve body and valve gap, the valve gap is installed on the valve body top, be equipped with the valve rod in the valve gap, valve rod upper portion be equipped with the screw thread and mesh mutually with the hand wheel on the valve gap, the valve rod bottom is connected with the valve plate in the valve body, the valve rod bottom is equipped with trapezoidal head, the valve plate top is equipped with connecting portion, be equipped with the trapezoidal groove of shape and trapezoidal head assorted on the connecting portion, trapezoidal head bottom is equipped with the spacer pin, the position that trapezoidal groove bottom corresponds with the spacer pin is equipped with the spacing groove, two clearance departments between trapezoidal head top surface and the trapezoidal groove all are equipped with and have elastic filling pad.

Further, the thickness of the limiting pin is smaller than or equal to the maximum deformation width of the filling pad.

Furthermore, a slot is arranged in the middle of each filling pad along the length direction, and a blocking strip is nested in the slot.

Furthermore, the grooves in the middle of the filling pad are wavy or saw-toothed, and the blocking strips are wavy or saw-toothed matched with the grooves.

Preferably, the top end of the blocking strip is provided with a blocking piece.

Preferably, one ends of the two blocking strips are connected to each other.

Advantageous effects

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the trapezoid head of the valve rod is provided with the limiting pin and is clamped into the limiting groove of the valve plate, the gap between the trapezoid head and the trapezoid groove is filled by the filling pad, the blocking piece and the blocking strip, and the degree of freedom in the direction of relative sliding between the trapezoid head and the trapezoid groove is limited, so that the valve rod and the valve plate 5 are convenient to assemble and disassemble, and meanwhile, the situation that dislocation occurs in the direction due to too strong force and excessive closing of the valve in the closing process is avoided, and the situation that the valve rod and the valve plate fall off is avoided.

Drawings

Fig. 1 is a schematic three-dimensional structure of the mechanical anti-theft gate valve of the present utility model.

Fig. 2 is a schematic illustration of the connection of a valve stem to a valve plate.

Fig. 3 is a schematic exploded view of the valve stem and valve plate.

Fig. 4 is a schematic front view of the valve stem and valve plate mated.

Fig. 5 is a schematic side view of the valve stem and valve plate mated configuration.

Fig. 6 is a three-dimensional schematic of the engagement of the blocking strip and the filling pad.

In the figure: 1. a valve body; 2. a valve cover; 3. a hand wheel; 4. a valve stem; 5. a valve plate; 4a, a trapezoid head; 4b, a limiting pin; 4c, filling the pad; 4d, blocking strips; 5a, a connecting part; 5b, a trapezoid groove; and 5c, a limit groove.

Description of the embodiments

The following description of the embodiments of the present utility model will be made more complete and less obvious to those skilled in the art, based on the embodiments of the present utility model, for a part, but not all of the embodiments of the present utility model, without making any inventive effort.

Examples

As shown in fig. 1-6, the utility model provides a novel mechanical anti-theft gate valve, which structurally comprises a valve body 1 and a valve cover 2, wherein the valve cover 2 is arranged at the top end of the valve body 1, a valve rod 4 is arranged in the valve cover 2, threads are arranged on the upper part of the valve rod 4 and meshed with a hand wheel 3 on the valve cover 2, a valve plate 5 is connected in the valve body 1 at the bottom end of the valve rod 4, a trapezoid head 4a is arranged at the bottom end of the valve rod 4, a connecting part 5a is arranged at the top end of the valve plate 5, a trapezoid groove 5b with the shape matched with that of the trapezoid head 4a is arranged on the connecting part 5a, a limiting pin 4b is arranged at the bottom end of the trapezoid head 4a, a limiting groove 5c is arranged at the position of the bottom end of the trapezoid groove 5b corresponding to the limiting pin 4b, and elastic filling pads 4c are arranged at two gaps between the top surface of the trapezoid head 4a and the trapezoid groove 5 b.

The thickness of the stopper pin 4b is smaller than or equal to the maximum deformation width of the filler pad 4c.

The middle part of each filling pad 4c is provided with a slot along the length direction, a blocking strip 4d is nested in the slot, and meanwhile, the slot in the middle part of the filling pad 4c is wavy or zigzag, and the blocking strip 4d is wavy or zigzag matched with the slot.

The person skilled in the art can select, when valve rod 4 suggestion, trapezoidal head 4a rises and can extrude filling pad 4c together with trapezoidal slot 5b, be equipped with the jam piece on the jam strip 4d top for even filling pad 4c reaches the deformation limit, because the existence of jam piece makes trapezoidal head 4a, spacer pin 4b also can not deviate from trapezoidal slot 5b, spacer slot 5c, simultaneously, for convenient dismouting, the one end interconnect of two jam strips 4d that adopts, makes the junction through two jam strips 4d when dismouting push or draw in the jam strip 4d to filling pad 4c.

This embodiment provides a specific implementation mode, in the installation, fix the filling pad 4c on the extension position at both ends of trapezoidal head 4a, put the jam piece on filling pad 4c top, then incline valve rod 4 or incline valve plate 5 and let the jam piece contact trapezoidal groove 5 b's top first, then take up taut valve rod 4 and valve plate 5, let filling pad 4c receive the state of compression to approaching the limit, then promote and let trapezoidal head 4a let spacer pin 4b get into trapezoidal groove 5b and imbed in spacing groove 5c, then adjust the jam piece position, let it fully imbed in spacing groove 5c, then plug in the fluting of filling pad 4c with the jam strip 4d, thereby accomplish the installation, in the use, if the circumstances of hard overforce takes place in the closing process, the circumstances that the valve excessively closes take place, because the spacer pin 4b of trapezoidal head 4a is blocked in spacing groove 5c, the degree of freedom in the direction of taking place relative slip between trapezoidal head 4a and the trapezoidal groove 5b is restricted, make between valve rod 4 and the valve plate 5 be in guaranteeing that easy dismounting can not take place in this comparatively the circumstances that the valve plate 5 takes place, thereby the circumstances that the dislocation takes place between the valve plate 4 and the circumstances is avoided.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

Claims (6)

1. The utility model provides a novel mechanical anti-theft gate valve, its structure includes valve body and valve gap, the valve gap is installed on the valve body top, be equipped with the valve rod in the valve gap, valve rod upper portion is equipped with the screw thread and meshes with the hand wheel on the valve gap, the valve rod bottom is connected with the valve plate in the valve body, its characterized in that:

the valve rod is characterized in that a trapezoid head is arranged at the bottom end of the valve rod, a connecting part is arranged at the top end of the valve plate, and a trapezoid groove with the shape matched with that of the trapezoid head is arranged on the connecting part;

the bottom end of the trapezoid head is provided with a limiting pin, and a limiting groove is formed in a position, corresponding to the limiting pin, of the bottom end of the trapezoid groove;

and elastic filling pads are arranged at two gaps between the top surface of the trapezoid head and the trapezoid groove.

2. The novel mechanical anti-theft gate valve according to claim 1, wherein: the thickness of the limiting pin is smaller than or equal to the maximum deformation width of the filling pad.

3. The novel mechanical anti-theft gate valve according to claim 1, wherein: and a slot is formed in the middle of each filling pad along the length direction, and a blocking strip is nested in the slot.

4. A novel mechanical anti-theft gate valve according to claim 3, characterized in that: the grooves in the middle of the filling pad are wavy or zigzag, and the blocking strips are wavy or zigzag matched with the grooves.

5. The novel mechanical anti-theft gate valve according to claim 4, wherein: and a blocking piece is arranged at the top end of the blocking strip.

6. The novel mechanical anti-theft gate valve according to claim 4, wherein: one ends of the two blocking strips are connected with each other.