Stainless steel soft sealing gate valve
Technical Field
The utility model relates to the technical field of valves, in particular to stainless steel soft sealing gate valve.
Background
The soft seal gate valve is divided into an exposed rod soft seal gate valve and a non-exposed rod soft seal gate valve. Generally, a trapezoidal thread is arranged on the lifting rod, and the rotary motion is changed into the linear motion, namely the operation torque is changed into the operation thrust force through a nut in the middle of the gate plate and a guide groove on the valve body. When the valve is opened, the passage of the fluid is completely open, but in operation this position is not monitored. In actual use, the vertex of the valve rod is used as a mark, namely, the opening and closing position is used as the full opening position. To account for the occurrence of lock-up due to temperature changes, the valve was opened to the top position and then reversed 1/2-1 cycles to assume the fully open valve position.
The soft sealing gate valve of current stainless steel can discover when using, and the valve body is opened and is closed hard and close insecurely, takes place easily to leak, and the sealed pad leakproofness that uses between each part of valve body is poor, permeates water easily and shortens sealing gate valve life.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a soft sealing gate valve of stainless steel can effectively improve the valve body of expounding in the background art and open and close hard and close insecurely, and the leakproofness is poor between each part of valve body, and the easy infiltration shortens sealing gate valve life's problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a stainless steel soft seal gate valve comprises a seal gate valve body, wherein a flashboard is arranged inside the seal gate valve body, a valve rod is arranged above the flashboard, the flashboard is connected with the valve rod through a fixing bolt, a valve cover is arranged above the seal gate valve body, a connecting part is arranged at the bottom of the valve cover, a boss matched with the top end face of the seal gate valve body is arranged on the connecting part, a flange matched with the end face of the connecting part is arranged on the inner wall of an opening at the top end of the seal gate valve body, a seal ring groove is arranged on the boss, a first seal ring is arranged inside the seal ring groove, a positioning cavity is arranged in the valve cover, a fixing block is sleeved in the positioning cavity on the valve rod, a positioning bolt matched with the bottom of the fixing block penetrates through the valve cover, a second seal ring is, the top in location chamber is located to the second sealing washer, the one end that the flashboard was kept away from to the valve rod is provided with the hand wheel, the top of hand wheel is provided with fastening bolt.
Preferably, the sealing gate valve main part is the arc, the one end of sealing gate valve main part is provided with the opening, the opening angle of sealing gate valve main part should use the flashboard to open and close smoothly and the floodgate lid is connected conveniently and is suitable.
Preferably, the top end of the flashboard is provided with an internal thread hole, the bottom of the valve rod is provided with an internal thread hole and an insertion groove, and the flashboard is in threaded connection with the valve rod through the internal thread hole, the insertion groove and the fixing bolt.
Preferably, the surface of the valve rod is provided with external threads, an internal thread hole is formed in the top end of the valve cover, the valve rod penetrates through the internal thread hole of the valve cover, and the valve rod is in threaded connection with the valve cover.
Preferably, the top of sealing gate valve main part is provided with the internal thread on establishing the inner wall, be equipped with the external screw thread that matches with the internal thread on the outer wall of connecting portion, the sealing gate valve main part passes through internal thread and external screw thread and valve gap threaded connection.
Preferably, the inner dimension of the sealing ring groove is the same as the outer dimension of the first sealing ring, and the sealing ring groove is sleeved with the first sealing ring.
Preferably, the middle of the hand wheel is provided with a connecting hole, the hand wheel is connected with the valve rod in an inserting mode through the connecting hole, and the fastening bolt is fixedly installed with the valve rod through the connecting hole.
Compared with the prior art, the utility model discloses following beneficial effect has: the stainless steel soft sealing gate valve has the advantages that the flashboard is tightly attached to the inner part of the sealing gate valve main body through the irregular arrangement of the flashboard, the sealing performance of the sealing gate valve is improved, the internal thread of the inner wall of the top end of the sealing gate valve and the external thread of the connecting part are arranged, so that the sealing gate valve body is in threaded connection with the valve cover, the gap between the sealing gate valve body and the valve cover is reduced as much as possible to prevent leakage, the first sealing ring and the second sealing ring are used in a matching way, so that the problems of poor sealing performance among all parts of the existing stainless steel soft sealing gate valve, easy water seepage and shortened service life of the sealing gate valve are solved, through setting up hand wheel and pilot pin and set up the external screw thread on the valve rod, set up the internal thread on the valve gap inner wall of valve gap and valve rod junction and make sealing gate valve more laborsaving when opening or closing, effectively improved the valve body and opened and close hard and close not firm problem.
Drawings
Fig. 1 is a schematic structural view of a stainless steel soft seal gate valve of the present invention;
FIG. 2 is a schematic view of a main body of a sealing gate valve of a stainless steel soft sealing gate valve of the present invention;
FIG. 3 is a schematic view of the connection between the gate plate and the valve rod of the stainless steel soft seal gate valve of the present invention;
fig. 4 is the utility model relates to a sealing washer recess and first sealing washer local schematic diagram of stainless steel soft seal gate valve.
In the figure: 1. a sealing gate valve body; 2. a shutter plate; 3. a valve stem; 4. fixing the bolt; 5. a valve cover; 6. a connecting portion; 7. a boss; 8. a flange; 9. a seal ring groove; 10. a first seal ring; 11. positioning bolts; 12. a fixed block; 13. a second seal ring; 14. a hand wheel; 15. and fastening the bolt.
Detailed Description
For making the technical means, creation characteristics, achievement purpose and efficiency of the utility model easily understand and understand, it is right below the technical scheme of the utility model to carry out further detailed explanation.
As shown in fig. 1-4, the stainless steel soft seal gate valve in this embodiment includes a seal gate valve main body 1, a gate plate 2 is disposed inside the seal gate valve main body 1, a valve rod 3 is disposed above the gate plate 2, a fixing bolt 4 is disposed at a joint of the gate plate 2 and the valve rod 3, a valve cover 5 is disposed above the seal gate valve main body 1, a connecting portion 6 is disposed at the bottom of the gate cover 5, a boss 7 that is matched with a top end surface of the seal gate valve main body 1 is disposed on the connecting portion 6, a flange 8 that is matched with an end surface of the connecting portion 6 is disposed on an inner wall of an opening at a top end of the seal gate valve main body 1, a seal ring groove 9 is disposed on the boss 7, a first seal ring 10 is disposed inside the seal ring groove 9, a positioning bolt 11 is disposed on one side of the valve rod 3, a fixing block 12 is, a fastening bolt 15 is arranged above the hand wheel 14.
In this embodiment, the sealing gate valve body 1 is arc-shaped, an opening is formed at one end of the sealing gate valve body 1, the opening angle of the sealing gate valve body 1 is suitable for smooth opening and closing of the gate plate 2 and convenient connection of the valve cover 5, the sealing gate valve body 1 is set to be arc-shaped opening to facilitate connection with the valve cover 5, an internal thread hole is formed at the top end of the gate plate 2, an internal thread hole and an insertion groove are formed at the bottom end of the valve rod 3, the gate plate 2 and the valve rod 3 are connected through the internal thread hole, the insertion groove and a fixing bolt 4 in a threaded manner, wherein the fixing bolt is M15 in type, the gate plate 2 is provided with a hole to facilitate connection with the valve rod 3, an external thread is formed on the surface of the valve rod 3, an internal thread hole is formed at the top end of the valve cover 5, the valve rod 3 penetrates through the internal thread hole, the inner wall of the top end of the sealing gate valve main body 1 is provided with an inner thread, the outer wall of the connecting part 6 is provided with an outer thread matched with the inner thread, the sealing gate valve main body 1 is in threaded connection with the valve cover 5 through the inner thread and the outer thread, the sealing gate valve main body is conveniently connected with the valve cover, the inner size of the sealing ring groove 9 is the same as the outer size of the first sealing ring 10, the sealing ring groove 9 is sleeved with the first sealing ring 10, the tightness of the connection between the gate valve main body 1 and the outer thread and the valve cover 5 is ensured, the problem that water seepage easily occurs between components and the service life of the sealing gate valve is shortened is solved, the hand wheel 14 is provided with a connecting hole in the middle, wherein fastening bolt 15's model is M30, and the person of facilitating the use directly adjusts the user state of sealing gate valve through hand wheel 14, solves the valve body and opens and close hard and close not firm problem.
It should be noted that, the utility model relates to a stainless steel soft seal gate valve, when in use, a user firstly connects the flashboard 2 with the valve rod 3 through the fixing bolt 4, then the valve rod 3 passes through the hole on the top of the valve cover 5, the fixing block 12 and the second sealing ring 13 are sleeved on the valve rod 3, the first sealing ring 10 is placed inside the sealing ring groove 9, the seal gate valve main body 1 is connected and fixed with the valve cover 5 through the screw thread arranged on the connecting part 6, the hand wheel 14 is fixed on the valve rod 3 through the fastening bolt 15, after the connection is correct, the stainless steel soft seal gate valve is placed in the actual use environment, the user can rotate the hand wheel 14 to adjust the opening or closing state of the soft seal gate valve according to the actual requirement, the connection among all parts of the valve body is more tight through the arrangement of the first sealing ring 10, the second sealing ring 13 and the connecting part 6, the problem of poor sealing gasket sealing performance used, the problem that the short service life is shortened in easy infiltration, it is hard and close insecurely to have solved traditional stainless steel soft seal gate valve through setting up of valve rod 3 and flashboard 2 and hand wheel 14, takes place the problem of leaking easily.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.