Valve cover casting convenient to assemble

Abstract

The utility model relates to the technical field of valve bonnets, and discloses a bonnet casting convenient to assemble, which comprises an opening binding piece, a top cover, a bottom ring and a hinge structure, the opening binding piece comprises a piece block, a plurality of first screw holes are formed in the upper end face of the piece block, and medium-sized hexagonal screws are sleeved in the first screw holes in a threaded manner; the top cover comprises a cover top, a casting cover fixing screw hole, a second screw hole groove and a fixing rod, two fixing clamping grooves are formed in the four edges of the cover top respectively, and the fixing rod is embedded between the two fixing clamping grooves, located on the same side, of the multiple fixing clamping grooves. Two fixing heads with penetrating holes are arranged on the fixing rod, and joint rings are fixedly arranged at the front end and the rear end of one side, far away from the top cover, of each fixing head. According to the utility model, hinge structures which are fixedly connected are arranged on four fixing surfaces, the installation is convenient, and due to the flat square appearance, the structure is smaller, and the occupied space is smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of valve covers, in particular to a valve cover casting that is convenient for assembly. Background Art

[0002] A valve cover is a valve part equipped with a valve stem seal, mainly used for connecting or as a component to support the actuator. In addition, it is also used for valve stem positioning and fixing the valve stem and the valve body, while enhancing the overall strength.

[0003] Valve covers are divided into integral valve covers and split valve covers. The integral valve cover not only serves as part of the pressure-bearing shell but also connects to the valve stem nut or actuator as a support for the valve stem. Integral valve covers are usually used for small and medium-sized regulating valves. According to the shape of the pressure-bearing part, valve covers can be divided into several structures such as flat plate type, butterfly type, spherical type, heat-absorbing type, long-neck type, and corrugated type, with diverse shapes and complex assembly.

[0004] The inventor found the following problems in the prior art during the implementation of this application: Most existing valve cover castings are in the shape of a long-neck structure. When installed and used, it will cause the entire valve cover to occupy a larger area. For valves installed and used in relatively narrow spaces, it not only makes the valve installation inconvenient but also may cause damage due to extrusion, potentially leading to unnecessary losses.

[0005] Therefore, those skilled in the art provided a valve cover casting that is convenient for assembly to solve the problems raised in the above background art. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a valve cover casting that is convenient for installation is proposed. Fixed hinge structures are installed on all four sides, facilitating installation. Its flat and square shape makes its structure smaller and occupies less space.

[0007] To achieve the above purpose, the utility model provides the following technical solutions: including a necking piece, a top cover, a bottom ring, and a hinge structure. The necking piece includes a piece block. Multiple necking piece screw holes are opened on the upper end surface of the piece block. Medium-sized hexagon screws are threadedly sleeved in multiple necking piece screw holes. The top cover includes a cover top, casting cover fixing screw holes, screw hole grooves, and fixing rods. Two fixing slots are chiseled on each of the four sides of the cover top. A fixing rod is embedded between two fixing slots on the same side among multiple fixing slots. The hinge mechanism includes a fixed base. A fixed base screw groove is opened on one side of the fixed base. Two fixing heads with fixed perforations are installed on the fixing rod;

[0008] On both the front and rear ends of the side of multiple fixed heads away from the top cover, joint rings are fixedly arranged. Between two joint rings on the same side among the multiple joint rings, a connecting bar is connected by a joint shaft. Multiple small hexagon screws connect it to a fixed base with a fixed base screw groove. Four fixed bases are welded at the front and rear ends and both sides of the bottom ring with a cavity. A rubber ring is installed on the upper part of the bottom ring. Multiple casting cover fixing screw holes are provided with threads corresponding to the bottom ring fixing screw holes.

[0009] Further, the number of screw holes on multiple mouth-binding pieces is four, and the four screw holes on the mouth-binding pieces are respectively located on both sides and at the front and rear ends of the upper end face of the mouth-binding piece.

[0010] Further, four threaded hole grooves are opened at the front, rear, and both sides near the center of the upper end face of the top cover, and are sleeved with medium hexagon screws with the screw holes on the mouth-binding pieces.

[0011] Further, on the side of multiple fixed heads close to the top cover, a fixed through hole penetrating the front and rear is opened, and two of the fixed heads are sleeved on a fixed rod.

[0012] Further, one end of multiple connecting bars is provided with fixed bar screw holes, and small hexagon screws are threadedly sleeved in the multiple fixed bar screw holes.

[0013] Further, multiple small hexagon screws connect the connecting bar to the fixed base with a fixed base screw groove.

[0014] Further, the number of multiple casting cover fixing screw holes is four, and the four casting cover fixing screw holes are respectively located at the front, rear, and both sides of the corners of the cover top.

[0015] Further, the number of multiple bottom ring fixing screw holes is four, and the four bottom ring fixing screw holes are respectively located at the front, rear, and both sides of the corners of the cover top, and correspond to the casting cover fixing screw holes on the upper end face of the top cover at the same time.

[0016] The utility model has the following beneficial effects:

[0017] 1. A valve cover casting convenient for assembly proposed by the utility model has a flat square shape, so its volume is not large and it does not occupy much area. A mouth-binding piece is installed on the top, making it more suitable for the valve stem. Secondly, a rubber ring is assembled in the middle part of this valve cover casting, making the casting have better sealing performance, effectively protecting the core components inside the valve from the erosion of the external environment, and prolonging the service life of the valve.

[0018] 2. A valve cover casting convenient for assembly proposed by the utility model is provided with a hinge structure around this casting, connecting the top cover and the bottom ring together, making the valve cover parts have high integrity, convenient for assembly, and also convenient for replacement, improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an isometric schematic diagram of the utility model;

[0020] Figure 2 is the schematic diagram of the part decomposition of the present utility model;

[0021] Figure 3 is the schematic diagram of the part decomposition of the top cover of the present utility model;

[0022] Figure 4 is the enlarged schematic diagram at position A of the present utility model.

[0023] Legend description:

[0024] 1. Drawstring piece; 2. Top cover; 3. Rubber ring; 4. Bottom ring; 5. Hinge structure; 6. Medium hexagon screw; 7. Fixed card slot; 8. Fixed bar screw hole; 9. Through hole; 101. Piece block; 102. First screw hole; 201. Cover top; 202. Cast cover fixing screw hole; 203. Second screw hole slot; 204. Fixed bar; 401. Bottom ring fixing screw hole; 501. Fixed base; 502. Small hexagon screw; 503. Base screw slot; 504. Connecting bar; 505. Fixed head; 506. Joint ring; 507. Joint shaft. Specific implementation mode

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0026] Referring to Figure 1 , an embodiment provided by the present utility model: a valve cover casting convenient for assembly, including a drawstring piece 1, a top cover 2, a bottom ring 4 and a hinge structure 5. The drawstring piece 1 includes a piece block 101, and a plurality of first screw holes 102 are opened on the upper end surface of the piece block 101. A medium hexagon screw 6 is threadedly sleeved in each of the plurality of first screw holes 102. The top cover 2 includes a cover top 201, a cast cover fixing screw hole 202, a second screw hole slot 203 and a fixed bar 204. Two fixed card slots 7 are drilled on each of the four sides of the cover top 201, and a fixed bar 204 is embedded between the two fixed card slots 7 on the same side among the plurality of fixed card slots 7. The hinge structure 5 includes a fixed base 501, a base screw slot 503 is opened on one side of the fixed base 501, and two fixed heads 505 with through holes 9 are installed on the fixed bar 204;

[0027] On both the front and rear ends of the side of the multiple fixed heads 505 away from the top cover 2, connector rings 506 are fixedly arranged. Between two connector rings 506 on the same side among the multiple connector rings 506, a connecting bar 504 is connected by a connector shaft 507. The multiple small hexagon head screws 502 connect it to a fixed base 501 with a base screw groove 503. The four fixed bases 501 are welded at the front and rear ends and both sides of the bottom ring 4 with a cavity. A rubber ring 3 is installed on the upper part of the bottom ring 4. Threads are provided in multiple casting cover fixing screw holes 202 and are opposite to the bottom ring fixing screw holes 401.

[0028] Specifically, multiple medium hexagon head screws 6 are threadedly sleeved on the upper end of the drawstring piece 1 to fix it to the upper end surface of the top cover 2. Two fixing slots 7 are opened at the front and rear ends and both sides of the top cover 2. Hinge structures 5 are connected to the front, rear, and both sides of the top cover 2, and the hinge structures 5 connect the top cover 2 to the bottom ring 4. A rubber ring 3 is arranged above the bottom ring 4.

[0029] Refer to Figure 2 As shown, the number of the multiple first screw holes 102 is four, and the four first screw holes 102 are respectively located at both sides and the front and rear ends of the upper end surface of the drawstring piece 1. Four second screw hole grooves 203 are opened at the front, rear, and both sides near the center of the upper end surface of the top cover 2, and are sleeved with medium hexagon head screws 6 together with the first screw holes 102.

[0030] Specifically, the first screw holes 102 are used for installing the top cover 2 on the upper surface of the piece block 101, mainly acting on the fitting of the valve stem, for fixing the valve stem and sealing.

[0031] Refer to Figure 2 、 3 As shown, through holes 9 penetrating the front and rear are opened on the side of the multiple fixed heads 505 close to the top cover 2.

[0032] Specifically, fixing rods 204 are fixed to the front and rear ends and both sides of the top cover 2, used for connecting the hinge structures 5 and also for the supporting effect on the four sides of the top cover 2 to prevent the cover body from deforming.

[0033] Refer to Figure 2 、 4 As shown, two fixed heads 505 are sleeved on the fixing rods 204. Fixing strip screw holes 8 are opened at one end of the multiple connecting bars 504. Small hexagon head screws 502 are threadedly sleeved in the multiple fixing strip screw holes 8, and the multiple small hexagon head screws 502 connect the connecting bars 504 to the base screw groove 503 provided.

[0034] Specifically, the hinge structure 5 is used to connect the top cover 2 and the bottom ring 4. The upper end of this structure is sleeved on the fixed rod 204, and the fixed base 501 at the bottom end is welded to one side of the bottom ring 4 to make it in a vertical state. It is connected by the joint ring 506 and the joint shaft 507, enabling the top cover 2 to perform a fixed vertical movement. When assembling, the cover body is placed vertically downward, which improves the integrity, facilitates assembly, and also improves the assembly efficiency.

[0035] Refer to Figure 2 , the number of the multiple casting cover fixing screw holes 202 is four, and the four casting cover fixing screw holes 202 are respectively located at the corners of the front, rear, left, and right of the top cover 2. The number of the multiple bottom ring fixing screw holes 401 is four, and the four bottom ring fixing screw holes 401 are respectively located at the corners of the front, rear, left, and right of the cover top 201, and correspond to the casting cover fixing screw holes 202 on the upper end face of the top cover 2 at the same time.

[0036] Specifically, screw holes are provided at the four corners of the top cover 2 and the bottom ring 4. Its main function is to connect the entire valve cover casting to the valve body, and it is also the main connecting component for fixing the top cover 2 and the bottom ring 4.

[0037] Working principle: First, place the rubber ring 3 above the bottom ring 4, then vertically buckle the top cover 2 downward on the rubber ring 3, then pass the cover body through the valve stem and install it on the valve body, then fix it to the valve body with fixing screws, then place the mouthpiece 1 on the top cover 2, and then connect the mouthpiece 1 and the cover body with the medium hexagon screw 6. The hinge structure 5 connected on all four sides functions to stabilize the connection between the top cover 2 and the bottom ring 4, and also facilitates the assembly between the top cover 2 and the bottom ring 4.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A valve cover casting that is easy to assemble, comprising a constriction piece (1), a top cover (2), a bottom ring (4) and a hinge structure (5), characterized in that: The cinch plate (1) comprises a plate block (101), the upper end surface of the plate block (101) is provided with a plurality of No. 1 screw holes (102), the plurality of No. 1 screw holes (102) are all threadedly sleeved with medium-sized hexagonal screws (6), the top cover (2) comprises a cover top (201), a cast cover fixing screw hole (202), a No. 2 screw hole groove (203), and a fixing rod (204), the four sides of the cover top (201) are each provided with two fixing slots (7), and a fixing slot (6) is embedded between two fixing slots (7) located on the same side of the plurality of fixing slots (7). A fixing rod (204) is arranged, the hinge structure (5) comprises a fixing base (501), a base screw groove (503) is provided on one side of the fixing base (501), and two fixing heads (505) with through holes (9) are arranged on the fixing rod (204); a plurality of fixing heads (505) are fixedly provided with joint rings (506) at the front and rear ends of a side away from the top cover (2), and two joint rings (506) located on the same side of the joint rings (506) are connected by a joint shaft (507) with a connecting strip (504). The connecting strip (504) is sleeved with a small hexagonal screw (502), and the small hexagonal screw (502) connects it to a fixed base (501) with a base screw groove (503). The fixed base (501) is welded to the front and rear ends and both sides of the bottom ring (4) with a cavity. A rubber ring (3) is installed on the upper part of the bottom ring (4). The cast cover fixing screw hole (202) is provided with a thread corresponding to the bottom ring fixing screw hole (401).

2. A valve cover casting that is easy to assemble according to claim 1, characterized in that: The number of the plurality of No. 1 screw holes (102) is four, and the four No. 1 screw holes (102) are respectively located on both sides of the upper end surface and at the front and rear ends of the constriction piece (1).

3. A valve cover casting that is easy to assemble according to claim 1, characterized in that: The top cover (2) has four No. 2 screw hole slots (203) on the front, back and both sides of the top end near the center, and are connected to the No. 1 screw holes (102) by medium-sized hexagonal screws (6).

4. A valve cover casting that is easy to assemble according to claim 1, characterized in that: A through hole (9) that runs through the front and back of the plurality of fixing heads (505) is formed on one side close to the top cover (2), and the two fixing heads (505) are sleeved on the fixing rod (204).

5. The valve cover casting that is easy to assemble according to claim 1, characterized in that: A fixing bar screw hole (8) is formed at one end of the plurality of connecting bars (504), and small hexagonal screws (502) are sleeved on the inner threads of the plurality of fixing bar screw holes (8).

6. A valve cover casting that is easy to assemble according to claim 1, characterized in that: A plurality of small hexagonal screws (502) connect the connecting strip (504) to the base screw groove (503).

7. A valve cover casting that is easy to assemble according to claim 1, characterized in that: The number of the plurality of cast cover fixing screw holes (202) is four, and the four cast cover fixing screw holes (202) are respectively located at the corners of the front, back and both sides of the cover top (201).

8. The valve cover casting that is easy to assemble according to claim 1, characterized in that: The number of the plurality of bottom ring fixing screw holes (401) is four, and the four bottom ring fixing screw holes (401) are respectively located at the corners of the front, back and both sides of the cover top (201), and correspond to the casting cover fixing screw holes (202) on the upper end surface of the top cover (2).

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