CN218625673U - Packing gland - Google Patents

Abstract

The utility model discloses a stuffing sealing gland, which comprises a fixed cover and a flange plate fixedly connected to the bottom of the fixed cover. The top center of the fixed cover is provided with an opening, and the center of the bottom of the fixed cover is provided with an opening. There are connected sealing grooves, the bottom of the sealing groove is threadedly connected with a sealing ring, the inner side wall of the sealing groove is located above the sealing ring, and a first auxiliary groove is opened, and a connecting ring is slidably connected in the sealing groove above the first auxiliary groove. A second auxiliary groove is provided on the inner side wall of the groove above the connecting ring; the beneficial effect of the utility model is that, compared with the prior art, the packing gland is easier to replace the worn packing ring, and the maintenance is easier. Convenient.

Description

packing gland

technical field

The utility model relates to a packing sealing gland, in particular to a packing sealing gland which is convenient for replacing packing rings.

Background technique

The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. There are many types of valves, including globe valves, butterfly valves, ball valves, etc., and the valve stem needs to be filled. The material of the filling is sealing material, usually graphite, tetrafluoroethylene, etc. After filling, it is compressed by the packing gland nut. Make sure that the valve does not leak objects when the valve stem moves up and down.

For example, the patent with the publication number CN217603456U is a bonnet forging with a seal, including a bonnet main body, a flange seat is arranged at the lower end of the bonnet main body, and a plurality of connecting through holes are evenly distributed on the flange seat, and the bonnet main body The center of the upper end of the valve stem is provided with a stem through hole, and the inner wall of the valve stem through hole is provided with a first seal installation groove near the upper end. The sealing groove is located in the center slot, which is symmetrically set up and down as a mirror image. Through the set first seal installation groove, the cooperation between the center slot and the eight-shaped auxiliary seal grooves on both sides can snap the outer side of the packing ring fixed in the first seal installation groove. fixed, and can improve the sealability of the contact surface between the outside of the packing ring and the first seal installation groove through the skimming of the eight-shaped auxiliary seal grooves on both sides, and the first seal installation groove near the upper end of the inner wall of the valve stem through hole can be installed on the main body of the valve cover When forging, rolling while hot is convenient for processing.

The device cooperates with the packing ring to complete the sealing operation through the opening of the first sealing installation groove and the second sealing installation groove, and at the same time, various grooves opened in the first sealing installation groove and the second sealing installation groove can improve a certain sealing performance , but there will be some inconvenience when replacing the worn packing ring.

Therefore, it is necessary to propose a packing gland to solve the above technical problems.

Utility model content

In order to solve the above problems, the utility model provides a packing gland, which is realized through the following technical solutions.

A stuffing gland, comprising a fixed cover and a flange fixedly connected to the bottom of the fixed cover, the center of the top of the fixed cover is provided with an opening, and the center of the bottom of the fixed cover is provided with a hole communicating with the opening. A sealing groove, the bottom of the sealing groove is threadedly connected with a sealing ring, and a first auxiliary groove is provided on the inner side wall of the sealing groove above the sealing ring, and a connecting ring is slidably connected in the sealing groove above the first auxiliary groove. ring, a second auxiliary groove is opened on the inner side wall of the sealing groove above the connecting ring.

Preferably, the inner diameters of the port, the sealing ring and the connecting ring are all the same.

Preferably, a first sealing pressure ring is affixed to the top of the sealing groove, a second sealing pressure ring is affixed symmetrically to the upper and lower surfaces of the connecting ring, and a third sealing pressure ring is affixed to the top of the sealing ring.

Preferably, the number of the first sealing pressure ring and the third sealing pressure ring are three groups, and the number of the second sealing pressure rings on the upper and lower surfaces of the connecting ring is three groups.

Preferably, the number of the first auxiliary groove and the number of the second auxiliary groove are two groups.

Preferably, the bottom of the inner wall of the sealing groove is provided with a threaded groove, and the sealing ring is threadedly connected with the sealing ring through the threaded groove.

Preferably, two sides of the bottom of the sealing ring are correspondingly provided with fixing holes, and the circumference of the bottom of the sealing ring is uniformly and densely provided with projections.

The beneficial effects of the utility model are:

(1) For this packing gland, a packing ring can be placed on the top of the set sealing ring and the connecting ring, and the two packing rings can be fixed by rotating the sealing ring, and the first auxiliary groove and the second auxiliary groove can be used to fix the two packing rings. The groove, the first sealing pressure ring, the second sealing pressure ring and the third sealing pressure ring can further improve the sealing effect of the packing ring. Compared with the existing technology, the packing gland is easier to replace the worn packing ring , It is more convenient and faster to maintain.

(2) The packing sealing gland can easily realize the rotation of the sealing ring through the fixing hole set at the bottom of the sealing ring, so as to facilitate the replacement of the packing ring; Gasket, the sealing gasket can avoid the rotation of the sealing ring during the use of the gland by cooperating with the protrusion, thereby further ensuring the sealing effect of the packing ring.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly, the accompanying drawings that need to be used in the description of specific embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1: is the structural schematic diagram of prior art;

Fig. 2: the structural schematic diagram of the whole described in the utility model;

Fig. 3: the front sectional view of the utility model;

Fig. 4: Schematic diagram of the structure of the sealing ring described in the utility model;

Fig. 5: A partial enlarged view of place A in Fig. 3 described in the utility model;

Fig. 6: Partial enlarged view of B in Fig. 3 described in the utility model.

The reference signs are as follows:

1. Fixed cover; 11. Flange; 12. Port; 13. Sealing groove; 14. Sealing ring; 15. First auxiliary groove; 16. Connecting ring; 17. Second auxiliary groove; 18. First sealing Pressure ring; 19, the second sealing pressure ring; 20, the third sealing pressure ring; 21, thread groove; 22, fixing hole; 23, bump.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 2-6, the utility model provides following embodiment:

A packing gland, comprising a fixed cover 1 and a flange 11 fixedly connected to the bottom of the fixed cover 1, the top center of the fixed cover 1 is provided with an opening 12, and the center of the bottom of the fixed cover 1 is provided with a communication port. The mouth 12 is connected to the seal groove 13, the bottom of the seal groove 13 is threadedly connected with the seal ring 14, and the inner side wall of the seal groove 13 is located above the seal ring 14 to open a first auxiliary groove 15, and the first auxiliary groove 15 is sealed A connecting ring 16 is slidably connected in the groove 13 , and a second auxiliary groove 17 is opened on the inner side wall of the sealing groove 13 above the connecting ring 16 . A packing ring can be placed on the top of the sealing ring 14 and the connecting ring 16, and the fixing of the two packing rings can be completed by rotating the sealing ring 14, and the packing can be lifted through the first auxiliary groove 15 and the second auxiliary groove 17. Compared with the prior art, the packing gland is easier to replace the worn packing ring, and the maintenance is more convenient and fast.

Further, the inner diameters of the port 12 , the sealing ring 14 and the connecting ring 16 are all the same. It can guarantee the stability and tightness of the gland to the valve stem during use.

Further, the top of the sealing groove 13 is affixed with a first sealing compression ring 18 , the upper and lower surfaces of the connecting ring 16 are symmetrically affixed with a second sealing compression ring 19 , and the top of the sealing ring 14 is affixed with a third sealing compression ring 20 .

Further, the number of the first sealing pressure ring 18 and the third sealing pressure ring 20 are three groups, and the number of the second sealing pressure ring 19 connecting the upper and lower surfaces of the ring 16 is three groups. The tightness between the upper and lower surfaces of the packing ring and the corresponding upper surface of the sealing groove 13 , and the upper and lower surfaces of the connecting ring 16 and the upper surface of the sealing ring 14 can be further increased.

Further, the number of the first auxiliary groove 15 and the number of the second auxiliary groove 17 are two groups. The sealing performance between the outer side of the packing ring and the side wall of the sealing groove 13 can be further increased.

Further, the bottom of the inner wall of the sealing groove 13 is provided with a threaded groove 21 , and the sealing ring 14 is threadedly connected with the sealing ring 14 through the threaded groove 21 .

Further, the two sides of the bottom of the sealing ring 14 are correspondingly provided with fixing holes 22 , and the circumference of the bottom of the sealing ring 14 is uniformly and densely provided with protrusions 23 . The fixing hole 22 provided at the bottom of the sealing ring 14 facilitates the rotation of the sealing ring 14, thereby facilitating the replacement of the packing ring; when the gland is in use, a gasket is placed at the joint between the fixed cover 1 and the valve body, and the gasket passes through Cooperating with the protrusion 23 can avoid the rotation of the sealing ring 14 during the use of the gland, thereby further ensuring the sealing effect of the packing ring.

The specific implementation method is:

When the gland is in use, the sealing ring 14 and the connecting ring 16 are first taken out of the sealing groove 13, and then put into the sealing groove 13 in sequence according to the packing ring, connecting ring 16, packing ring and sealing ring 14, and used The tool cooperates with the fixing hole 22 to tighten the sealing ring 14 to complete the fixing of the two packing rings, and passes through the first auxiliary groove 15, the second auxiliary groove 17, the first sealing pressure ring 18, the second sealing pressure ring 19 and the second sealing pressure ring. The three-sealing pressure ring 20 can further improve the sealing effect of the packing ring, and the set connecting ring 16 can increase the stability of the valve stem in the port 12, and at the same time cooperate with the two packing blocks to make the gland have better sealing As a result, the fixed cover 1 is connected to the valve body through the cooperation between the bolt and the flange 11, and a gasket is placed at the joint between the fixed cover 1 and the valve body. The gasket can avoid this gland by cooperating with the bump 23 The rotation of the sealing ring 14 during use further ensures the sealing effect of the packing ring. Compared with the prior art, the packing gland is easier to replace the worn packing ring, and the maintenance is more convenient and fast. .

The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not exhaust all details nor limit the invention to specific implementations. Obviously, many modifications and variations can be made based on the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that those skilled in the art can well understand and utilize the utility model. The invention is to be limited only by the claims and their full scope and equivalents.

Claims (7)

1. A packing gland, characterized in that: comprising a fixed cover (1) and a flange (11) fixedly connected to the bottom of the fixed cover (1), the top center of the fixed cover (1) is provided with port (12), and the bottom center of the fixed cover (1) is provided with a seal groove (13) connected with the port (12), and the bottom of the seal groove (13) is threadedly connected with a seal ring (14 ), the inner side wall of the sealing groove (13) is located above the sealing ring (14) and is provided with a first auxiliary groove (15), and the sealing groove (13) above the first auxiliary groove (15) is slidably connected with For the connecting ring (16), a second auxiliary groove (17) is opened on the inner side wall of the sealing groove (13) above the connecting ring (16). 2. A packing gland according to claim 1, characterized in that: the inner diameters of the opening (12), the sealing ring (14) and the connecting ring (16) are all the same. 3. A packing gland according to claim 2, characterized in that: the top of the sealing groove (13) is fixedly connected with a first sealing pressure ring (18), and the upper and lower surfaces of the connecting ring (16) A second sealing pressure ring (19) is fixed symmetrically, and a third sealing pressure ring (20) is fixed on the top of the sealing ring (14). 4. A packing gland according to claim 3, characterized in that: the number of the first sealing ring (18) and the third sealing ring (20) are three groups, and the connecting ring ( 16) The number of the second sealing pressure rings (19) on the upper and lower surfaces is three groups. 5. A packing gland according to claim 1, characterized in that: the number of the first auxiliary groove (15) and the second auxiliary groove (17) are two groups. 6. A packing gland according to claim 1, characterized in that: the bottom of the inner wall of the sealing groove (13) is provided with a threaded groove (21), and the sealing ring (14) passes through the threaded groove (21). ) is threadedly connected with the sealing ring (14). 7. A packing gland according to claim 6, characterized in that: the two sides of the bottom of the sealing ring (14) are correspondingly provided with fixing holes (22), and the circumference of the bottom of the sealing ring (14) is uniformly densely distributed A bump (23) is provided.

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