CN204136007U - The valve seat tool for assembling of valve - Google Patents

Abstract

The utility model discloses a kind of valve seat tool for assembling of valve, comprise plug, expansion set, baffle plate, location-plate, action bars and core bar, core bar and action bars are full thread structure, plug is bullet, one end of plug and core bar is threaded connection, expansion set is set in outside core bar, expansion set is made up of pullover and loop bar, bellmouth is provided with in pullover, plug matches with pullover bellmouth, the other end of core bar is provided with the first nut, baffle-plate-sleeve is loaded on outside expansion set, the outer end of the loop bar of expansion set and the middle part of location-plate are threaded connection, location-plate is provided with two action bars by screw thread, each action bars is provided with two the second nuts away from one end of baffle plate.The utility model alleviates the labour intensity of operating personnel, improves the assembling progress of the security of operation, service efficiency and whole product, and ensure that the quality of the valve after assembling; The utility model structure is simple, and handling ease, materials are few, cost-saving, and simple to operation, easy to maintenance.

Description

Tooling for valve seat assembly

technical field

The utility model relates to the technical field of valves, in particular to a tooling for valve seat assembly.

Background technique

When assembling valve products such as gate valves, the assembly of the valve seat is the key to valve assembly, and the quality of the valve seat assembly directly affects the sealing performance and service life of the valve. A sealing ring is installed on the valve seat, and an interference fit needs to be achieved between the valve seat and the valve seat mounting hole of the valve body, so the assembly of the valve seat is relatively difficult. The current assembly tool for the valve seat is not only inconvenient to assemble, but also cannot install the valve seat in place as required, and is easy to damage the sealing ring on the valve seat. Moreover, the installation of the valve seat is not in place, which also makes the installation of the valve stem and the gate plate more difficult, thereby reducing the overall assembly efficiency of the valve, poor sealing performance and serviceability of the assembled valve, and also affecting the service life of the valve.

Utility model content

In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a valve seat assembly tooling for valves which is easy to assemble and has high assembly quality.

In order to achieve the above-mentioned technical purpose and achieve the above-mentioned technical effect, the utility model is realized through the following technical solutions: a valve seat assembly tooling for a valve, including a plug, an expansion sleeve, a baffle plate, a positioning plate, an operating rod and a core rod. Both the core rod and the operating rod are fully threaded, the plug is a cone, the plug is connected to one end of the core rod through threads, the expansion sleeve is set outside the core rod, and the expansion sleeve is set outside the core rod. The sleeve is composed of a sleeve head and a sleeve rod that are integrally arranged. The sleeve head is provided with a tapered hole. The plug is matched with the tapered hole of the sleeve head. The other end of the core rod is equipped with a first nut. The baffle is set outside the expansion sleeve, and the outer end of the sleeve rod of the expansion sleeve is threadedly connected with the middle part of the positioning plate, and the positioning plate is threaded with two The operating rods are symmetrical to the axial centerline, and two second nuts are installed on the end of each operating rod far away from the baffle.

Further, the baffle plate has a positioning boss on a side away from the positioning plate.

Further, the sleeve head of the expansion sleeve includes a cylindrical section and a conical section, and the conical section of the sleeve head is integrally connected with the sleeve rod of the expansion sleeve.

The beneficial effects of the utility model are: the utility model adopts the plug of the conical body to cooperate with the tapered hole of the expansion sleeve, and the expansion sleeve and the valve seat are connected by the plug under the action of the thread transmission between the first nut and the core rod. The inner hole of the valve is tightened, and then under the action of the thread transmission between the second nut and the operating rod, the valve seat is moved, and the valve seat is installed in place in the valve body. The utility model reduces the labor intensity of the operator, improves the safety of the operation, improves the use efficiency and the assembly progress of the whole product, and ensures the quality of the valve after assembly; in addition, the utility model has a simple structure and is easy to process , less material, cost saving, and simple and easy to operate and maintain.

Description of drawings

Fig. 1 is a cross-sectional view of the overall structure of the valve seat assembly tooling of the valve of the present invention.

Fig. 2 is a structural schematic diagram of the expansion sleeve in the utility model.

Fig. 3 is a schematic diagram of the utility model when it is used in cooperation with the valve seat and the valve body.

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, thereby making a clearer definition of the protection scope of the utility model .

As shown in Figure 1 and Figure 2, a valve seat assembly tooling for a valve includes a plug 1, an expansion sleeve 2, a baffle plate 3, a positioning plate 4, an operating rod 5 and a core rod 6, wherein the core rod 6 and The operating rods 5 are of full thread structure, the plug 1 is a conical body, the plug 1 and one end of the core rod 6 are connected by threads, the expansion sleeve 2 is set outside the core rod 6, and the expansion sleeve 2 is formed by The sleeve head 21 and the sleeve rod 22 which are integrally arranged are formed, wherein, the sleeve head 21 is provided with a tapered hole 211, the plug 1 is matched with the tapered hole 211 of the sleeve head 21, and the other end of the core rod 6 is A first nut 61 is installed, and the first nut 61 abuts against the outer end surface of the sleeve rod 22 of the expansion sleeve 2. It has threads, and the outer end of the sleeve rod 22 of the expansion sleeve 2 is threadedly connected with the middle part of the positioning plate 4, and the positioning plate 4 is threaded with two symmetrical shafts relative to the axial center line of the positioning plate 4. Two second nuts 51 are installed on the end of each operating rod 5 away from the baffle 3 .

Furthermore, the baffle plate 3 has a positioning boss 31 on a side away from the positioning plate 4 . When assembling the valve seat, the positioning boss 31 is used to cooperate with the valve body channel of the valve body.

Furthermore, the sleeve head 21 of the expansion sleeve 2 is composed of a cylindrical section 212 and a conical section 213 , and the conical section 213 of the sleeve head 21 is integrally connected with the sleeve rod 22 of the expansion sleeve 2 .

Before assembling the valve seat 7, the valve seat assembly tool of the present utility model is assembled. As shown in Figure 3, the schematic diagram of the utility model when it is used in conjunction with the valve seat 7 and the valve body 8 (only shows that the valve seat is assembled on one side of the valve body), firstly, the expansion sleeve 2 of the valve seat assembly tool is installed in the valve The valve body channel of the valve body 8, so that the sleeve head 21 of the expansion sleeve 2 extends into the valve seat inner hole of the valve seat 7 through the valve body channel, and the baffle plate 3 is close to the flange outer end surface of the valve body 8, and the core rod The first nut 61 at the end of 6 leans against the outer end surface of the sleeve rod 22, and then the first nut 61 on the end of the core rod 6 is rotated, and the core rod 6 drives the plug 1 to move through screw transmission during the tightening process. The tapered surface of the plug 1 cooperates with the tapered hole 211 of the sleeve 21 to make the sleeve 21 of the expansion sleeve 2 expand, so that the sleeve 21 of the expansion sleeve 2 and the inner hole of the valve seat 7 are expanded tightly. Tighten the positioning plate 4, and turn the operating rod 5 to make the end of the operating rod 5 lean against the baffle plate 3, and then turn the two first nuts 51 on the operating rod 5 to make it lean against the positioning plate 4 , and further rotate the first nut 51. During the tightening process, the expansion sleeve 2 and the valve seat 7, which is expanded together with the expansion sleeve 2, move toward the outer end of the flange through screw transmission, and the valve seat 7 is placed on the valve body 8. installed in place. The valve seat 7 on the other side of the valve body 8 is also assembled according to the above method by the valve seat assembly tool of the present utility model. After the valve seat 7 is assembled, the valve stem and gate are loaded into the valve body 8 . Loosen the first nut 61 at the end of the core rod 6 and the second nut 51 on the operating rod 5, and then the valve seat assembling tool of the valve can be taken out from the valve body 8.

The tooling for assembling the valve seat of the valve of the utility model can be recycled and has a long service life. When used for a long time, if the operating rod has a certain wear and tear, only the operating rod can be directly reprocessed or replaced without replacing the entire tooling. save costs.

The utility model reduces the labor intensity of the operator, improves the safety of the operation, improves the use efficiency and the assembly progress of the whole product, and ensures the service performance, sealing performance and service life of the assembled valve and other quality indicators; In addition, the utility model has the advantages of simple structure, easy processing, less material consumption, cost saving, simple operation and convenient maintenance.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (3)

1. the valve seat tool for assembling of a valve, it is characterized in that: comprise plug, expansion set, baffle plate, location-plate, action bars and core bar, described core bar and action bars are full thread structure, described plug is bullet, one end of described plug and described core bar is threaded connection, described expansion set is set in outside described core bar, described expansion set is made up of the pullover and loop bar be wholely set, described pullover in be provided with bellmouth, described plug matches with described pullover bellmouth, the other end of described core bar is provided with the first nut, described baffle-plate-sleeve is loaded on outside expansion set, the outer end of the loop bar of described expansion set and the middle part of described location-plate are threaded connection, described location-plate is provided with two action bars relative to the longitudinal center line symmetry of described location-plate by screw thread, each action bars is provided with two the second nuts away from one end of baffle plate.

2. the valve seat tool for assembling of valve according to claim 1, is characterized in that: described baffle plate has positioning boss in the side away from location-plate.

3. the valve seat tool for assembling of valve according to claim 1, is characterized in that: the pullover of described expansion set comprises cylindrical section and conical section, and this pullover conical section is connected with the loop bar one of expansion set.