Closed blind plate valve

Abstract

A closed type blind plate valve comprises a main valve box body, a main valve body, a clamping assembly, an auxiliary valve body box body, a through plate and a blind plate, and the through plate and the blind plate are installed on an auxiliary valve moving frame through installation assemblies of the same structure. The main valve box body is further provided with a moving assembly which drives the auxiliary valve moving frame to move horizontally so that the blind plate and the through plate can be matched with the main valve body. The installation assembly comprises fixing plates fixedly arranged on the upper side and the lower side of the through plate and the blind plate, opening grooves are symmetrically formed in the two ends of each fixing plate, reset elastic assemblies are arranged at the positions corresponding to the opening grooves, two sets of bearing walking wheels are further arranged on each fixing plate, and each set of bearing walking wheels comprises two walking wheel assemblies arranged on the two sides of the corresponding fixing plate. According to the utility model, the abrasion to the sealing ring in the transverse movement switching process can be reduced; transverse abrasion of the sealing ring is avoided, and the service life of the sealing ring is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of plug-in plate valves, in particular to a closed blind plate valve. Background Art

[0002] The electric closed blind plate valve is a closed blind plate valve used for isolating large-diameter pipelines for transporting gas, especially for transporting combustible gas. It is composed of a valve box consisting of a main valve box and an auxiliary valve box, wherein the valve boxes consisting of the main valve box and the auxiliary valve box are both equipped with a closed cover for the entrance of equipment commissioning and maintenance; a through plate for conducting and a blind plate for closing are arranged in the auxiliary valve box, a main fixed valve body and a coaxially installed main movable valve body are installed in the main valve box, and a clamping assembly installed on the main valve body shell to drive the main movable valve body to move axially, the clamping assembly mainly includes a clamping electric device and a synchronous transmission mechanism, and the main valve box is also equipped with a moving assembly that drives the auxiliary valve moving frame to move horizontally to achieve the coordination of the blind plate and the through plate with the main valve body;

[0003] After sealing, the closed blind plate valve still has a certain amount of compression deformation due to the sealing ring, especially on the main fixed valve body side. At this time, the through plate and the blind plate are immediately switched horizontally, which often causes lateral wear on the sealing rings on the outer circumference of the through plate and the blind plate.

[0004] For this purpose, the utility model designs a closed blind plate valve which can avoid lateral wear of the sealing rings on the outer circumferences of the through plate and the blind plate when the through plate and the blind plate are firmly engaged. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a closed blind plate valve which can avoid lateral wear of the sealing rings on the outer circumferences of the through plate and the blind plate when the through plate and the blind plate are firmly connected.

[0006] The utility model is implemented as follows: a closed blind plate valve comprises a main valve box, a main valve body installed on the main valve box, the main valve body comprises a main fixed valve body and a main movable valve body installed coaxially, a clamping assembly installed on the main valve body shell and driving the main movable valve body to move axially, and an auxiliary valve body box installed at both ends of the main valve body shell, one of the auxiliary valve boxes is provided with a through plate, and the other auxiliary valve box is provided with a blind plate. The through plate and the blind plate are installed on the auxiliary valve movable frame through a mounting assembly with the same structure, and the main valve box is also provided with a moving assembly that drives the auxiliary valve movable frame to move horizontally to achieve the cooperation of the blind plate and the through plate with the main valve body; it is characterized in that: the mounting assembly comprises a fixed plate fixedly arranged on the upper and lower sides of the through plate and the blind plate, the two ends of the fixed plate are symmetrically provided with open grooves, and a reset elastic assembly is provided at the corresponding position of the open groove, and when the through plate and the blind plate are switched, the reset elastic assembly separates the blind plate or the through plate from the main fixed valve body; the fixed plate is also provided with two sets of load-bearing walking wheels, and each set of load-bearing walking wheels includes two walking wheel assemblies arranged on both sides of the fixed plate.

[0007] Preferably, the reset elastic component includes a base fixedly mounted on the upper surface of the bottom frame of the auxiliary valve movable frame, and a guide rod parallel to the axis of the through plate and the blind plate is installed on the base, and the guide rod is inserted into the open groove; a reset spring is mounted on the guide rod on the side of the main fixed valve body, and an adjusting nut is screwed on the end of the guide rod on the outside of the reset spring.

[0008] Preferably, a limit pin parallel to the axis of the through plate and the blind plate is provided on the base on the main movable valve body side.

[0009] Preferably, the limiting pin is screwed onto the base.

[0010] Advantages and technical effects of the utility model: The technical solution of the utility model has the following advantages:

[0011] 1. When the through plate and the blind plate are switched by the additional return spring assembly, they are first separated from the main fixed valve body, thereby forming an avoidance, reducing the wear on the sealing ring during the lateral switching process; Avoid lateral wear of the sealing ring: Through the design of the return spring assembly, when the through plate and the blind plate are switched, they are separated from the main fixed valve body, thereby reducing the lateral wear of the sealing ring.

[0012] 2. Increase stability: A limit pin is provided on the side of the main movable valve body to limit the auxiliary valve movable frame to ensure its smooth operation and increase the stability of the overall structure.

[0013] 3. Easy to adjust and replace: The adjusting nut in the reset spring assembly can easily adjust the elastic force of the reset spring. At the same time, the limit pin is screwed on the base for easy disassembly and replacement.

[0014] 4. Strong versatility: Since the installation component structures of the through plate and the blind plate are the same, they can be used interchangeably, reducing the types of parts and facilitating production and maintenance.

[0015] In summary, the utility model provides a closed blind plate valve with reasonable structure, high stability, and easy adjustment and replacement, which effectively solves the problem of lateral wear of the sealing ring in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 yes Figure 1 Middle AA section view;

[0018] Figure 3 yes Figure 2 Enlarged view of middle B

[0019] Figure 4 and Figure 5 It is a schematic diagram of the installation structure of the through plate and the blind plate;

[0020] Figure 6 yes Figure 4 Enlarged view of middle C;

[0021] Figure 7 yes Figure 5 Enlarged view of part D in the middle.

[0022] In the figure, 10, main valve housing; 101, main fixed valve body; 102, main movable valve body; 20, clamping assembly; 201, movable electrical device; 202, movable electrical device; 30, auxiliary valve housing; 301, through plate; 302, blind plate; 303, auxiliary valve movable frame; 40, movable assembly; 401, movable electrical device; 402, rack; 50, mounting assembly; 510, fixed plate; 520, opening groove; 530, reset elastic assembly; 531, base; 532, guide rod; 533, reset spring; 534, adjusting nut; 535, limit pin; 60, walking wheel assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0024] See also Figures 1 to 7, a closed blind plate valve, comprising a main valve housing 10, a main valve body installed on the main valve housing, the main valve body comprising a main fixed valve body 101 and a coaxially installed main movable valve body 102, a clamping assembly 20 installed on the main valve body shell to drive the main movable valve body to move axially, and an auxiliary valve body housing 30 installed at both ends of the main valve body shell, wherein a through plate 301 is provided in one auxiliary valve housing, and a blind plate 302 is provided in the other auxiliary valve housing, the through plate and the blind plate are installed on the auxiliary valve movable frame 303 through an installation component 50 with the same structure, and a movable assembly 40 is also installed on the main valve housing to drive the auxiliary valve movable frame to move horizontally to realize the cooperation of the blind plate and the through plate with the main valve body; a clamping assembly to drive the main movable valve body to move axially and a movable assembly to drive the auxiliary valve movable frame to move horizontally to realize the cooperation of the blind plate and the through plate with the main valve body, the clamping assembly 20 mainly comprises a mobile electrical device 201 and a worm gear synchronous Transmission mechanism 20; the moving assembly 40 mainly includes a moving electrical device 401 and a gear rack transverse movement mechanism, wherein the rack 402 is installed on the auxiliary valve moving frame. The working principle of the above-mentioned clamping assembly and moving assembly belongs to the prior art in this field and will not be repeated here; the main innovation of the utility model is how to solve the problem of wear of the sealing ring during the opening and closing process, that is, to reduce the wear of the sealing ring when the through plate and the blind plate are switched. The specific technical features are as follows: the installation component 50 includes a fixed plate 510 fixedly arranged on the upper and lower sides of the through plate and the blind plate, and the two ends of the fixed plate are symmetrically provided with open grooves 520, and a reset elastic component 530 is provided at the corresponding position of the open groove. When the through plate and the blind plate are switched, the reset elastic component separates the blind plate or the through plate from the main fixed valve body. The fixed plate is also provided with two sets of load-bearing walking wheels, and each set of load-bearing walking wheels includes two walking wheel assemblies 60 arranged on both sides of the fixed plate. The load-bearing walking wheels mainly support the weight of the blind plate and the through plate. The use of walking wheels reduces sliding friction and facilitates translation.

[0025] Preferably, the reset elastic component 530 includes a base 531 fixedly mounted on the upper surface of the bottom frame of the auxiliary valve movable frame, and a guide rod 532 parallel to the axis of the through plate and the blind plate is installed on the base. The guide rod is inserted into the opening groove 520 to play a guiding role. A reset spring 533 is mounted on the guide rod on the side of the main fixed valve body, and an adjusting nut 534 is screwed on the end of the guide rod on the outside of the reset spring. The adjusting nut can conveniently adjust the elastic force of the reset spring.

[0026] Preferably, a limit pin 535 parallel to the axis of the through plate and the blind plate is provided on the base on the main movable valve body side, which serves to limit the axial movement position of the through plate and the blind plate. Generally, after movement, the through plate and the blind plate are 10-15 mm away from the sealing end face of the main fixed valve body and the sealing end face of the main movable valve body. The limit pin is screwed on the base, and the distance between the through plate and the blind plate and the sealing end face of the main fixed valve body and the sealing end face of the main movable valve body can be adjusted by adjusting the limit pin to ensure that the sealing ring will not be worn during the switching process.

[0027] In summary, the utility model first separates the through plate and the blind plate from the main fixed valve body when switching through the additional reset spring assembly, thereby forming an avoidance, reducing the wear on the sealing ring during the lateral switching process; avoiding lateral wear of the sealing ring and increasing the service life of the sealing ring.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A closed blind plate valve, comprising a main valve housing, a main valve body mounted on the main valve housing, the main valve body comprising a main fixed valve body and a coaxially mounted main movable valve body, a clamping assembly mounted on the main valve body housing to drive the main movable valve body to move axially, and auxiliary valve body housings mounted at both ends of the main valve body housing, wherein a through plate is provided in one auxiliary valve housing, and a blind plate is provided in the other auxiliary valve housing, the through plate and the blind plate are mounted on the auxiliary valve movable frame through mounting components with the same structure, and a movable assembly is also mounted on the main valve housing to drive the auxiliary valve movable frame to move horizontally to achieve the coordination of the blind plate and the through plate with the main valve body; Features: The installation assembly includes a fixing plate fixedly arranged on the upper and lower sides of the through plate and the blind plate, and the two ends of the fixing plate are symmetrically provided with opening grooves, and a reset elastic assembly is provided at the corresponding position of the opening groove. When the through plate and the blind plate are switched, the reset elastic assembly separates the blind plate or the through plate from the main fixed valve body, and two groups of load-bearing walking wheels are also provided on the fixing plate, and each group of load-bearing walking wheels includes two walking wheel assemblies arranged on both sides of the fixing plate.

2. According to claim 1, the closed blind plate valve, Features: The reset elastic component includes a base fixedly mounted on the upper surface of the bottom frame of the auxiliary valve moving frame, and a guide rod parallel to the axis of the through plate and the blind plate is installed on the base, and the guide rod is inserted into the open groove; a reset spring is sleeved on the guide rod on the side of the main fixed valve body, and an adjusting nut is screwed on the end of the guide rod on the outside of the reset spring.

3. According to claim 2, the closed blind plate valve, Features: A limiting pin parallel to the axis of the through plate and the blind plate is arranged on the base on the main movable valve body side.

4. According to claim 3, the closed blind plate valve, Features: The limiting pin is screwed on the base.

Images