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CN-224201135-U - Valve with stainless steel overlay welding layer

CN224201135UCN 224201135 UCN224201135 UCN 224201135UCN-224201135-U

Abstract

The utility model discloses a valve with a stainless steel surfacing layer, which comprises a valve body, a valve cover, a valve rod and a valve core, wherein the valve body is provided with a valve cavity, an inlet and an outlet which are communicated with the valve cavity are arranged on two sides of the valve body, the valve cavity of the valve body is provided with a valve seat for dividing the inlet and the outlet, the valve body is provided with a valve cover connecting part, the valve cover is detachably arranged on the valve cover connecting part of the valve body, the valve rod is in threaded connection with the valve cover and extends into the valve cavity through the valve cover, the valve core is fixedly arranged at the lower end of the valve rod and is positioned in the valve cavity of the valve body, the stainless steel surfacing layer is arranged at the joint of the valve core and the valve rod, and the valve rod is suitable for driving the valve core to be in matched contact with the valve seat in the valve cavity through rotary action so as to control the communication state between the inlet and the outlet through the matching of the valve core and the valve seat. The utility model can prolong the service life of the valve and realize visual inspection of the abrasion state.

Inventors

  • CHU JIANFEI
  • XU JING
  • DING QIANG

Assignees

  • 常州东方环保产业发展有限公司

Dates

Publication Date
20260505
Application Date
20250610

Claims (7)

  1. 1. A valve having a stainless steel weld overlay comprising: The valve comprises a valve body (1), wherein the valve body (1) is provided with a valve cavity, both sides of the valve body (1) are provided with an inlet and an outlet which are communicated with the valve cavity, the valve cavity of the valve body (1) is provided with a valve seat for dividing the inlet and the outlet, and the valve body (1) is provided with a valve cover connecting part; the valve cover (2) is detachably arranged on the valve cover connecting part of the valve body (1); The valve rod (3) is in threaded connection with the valve cover (2) and extends into the valve cavity through the valve cover (2); The valve core (4) is fixedly arranged at the lower end of the valve rod (3) and positioned in a valve cavity of the valve body (1), and a stainless steel surfacing layer (6) is arranged at the joint of the valve core (4) and the valve rod (3); The valve rod (3) is suitable for driving the valve core (4) to be in matched contact with a valve seat in the valve cavity through rotary action, and the communication state between the inlet and the outlet is controlled through the matching of the valve core (4) and the valve seat; the contact surface of the valve seat and the valve core (4) is provided with at least one annular abrasion depth indication groove (7) which is concentric with the sealing surface of the valve seat.
  2. 2. The valve with stainless steel overlay according to claim 1, wherein, The periphery of the top of the valve body (1) is provided with a first conical flange (8); The periphery of the bottom of the valve cover (2) is provided with a second conical flange (9) matched with the first conical flange (8); After the first conical flange (8) and the second conical flange (9) are in butt joint, an annular boss is formed on the periphery of the first conical flange; Further comprising a connection mechanism adapted to connect the valve body (1) with the valve cover (2), the connection mechanism comprising: The split type clamp (21) is characterized in that grooves matched with the annular bosses are formed in the inner periphery of the split type clamp (21); a fastener provided on the split clip (21); The split clamp (21) is suitable for being tightened through the fastener, so that the groove of the split clamp (21) presses the annular boss, and the first conical flange (8) and the second conical flange (9) are tightly and fixedly connected.
  3. 3. The valve with stainless steel overlay according to claim 2, wherein, The annular boss formed after the first conical flange (8) and the second conical flange (9) are in butt joint is a V-shaped boss, and the groove in the inner periphery of the split type clamp (21) is a V-shaped groove matched with the V-shaped boss.
  4. 4. The valve with stainless steel overlay according to claim 2, wherein, The split type clamp (21) consists of two symmetrically arranged semi-annular clamping petals.
  5. 5. The valve with stainless steel overlay according to claim 4, wherein, The fastener comprises a connecting bolt (25) arranged on one of the connecting lug plates of the semi-annular clamping petals and a nut in threaded connection with the connecting bolt (25), wherein the nut is suitable for being matched with the connecting bolt (25) through rotation, so that the connecting lug plates of the two semi-annular clamping petals are mutually pressed.
  6. 6. The valve with stainless steel overlay according to claim 5, wherein, The nut is provided with a butterfly handle (26) outside.
  7. 7. The valve with stainless steel overlay according to claim 1, wherein, The valve rod also comprises an operating handle (30), wherein the operating handle (30) is arranged on the valve rod (3).

Description

Valve with stainless steel overlay welding layer Technical Field The utility model relates to a valve with a stainless steel overlay welding layer, and belongs to the technical field of valves. Background At present, the valve is an important control device in an industrial pipeline system and is widely applied to industries such as petroleum, chemical industry, electric power, metallurgy, sewage treatment and the like. Particularly in sewage treatment plants, valves are required to treat sewage containing suspended matter, corrosive substances and abrasive particles for a long period of time, and the working environment is extremely severe. After searching the prior art, it was found that chinese patent publication No. CN214119002U discloses a valve with stainless steel weld overlay, in which the stainless steel weld overlay is welded on the inner side of the valve body, but during use, it was found that the joint of the valve stem and the valve core is more prone to wear and corrosion, which becomes a weak link for failure of the valve. Disclosure of Invention The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide the valve with the stainless steel overlay welding layer, which can prolong the service life of the valve and realize visual inspection of the abrasion state. In order to solve the technical problems, the technical scheme of the utility model is that the valve with the stainless steel overlay welding layer comprises: The valve body is provided with a valve cavity, an inlet and an outlet which are communicated with the valve cavity are arranged on two sides of the valve body, the valve cavity of the valve body is provided with a valve seat for dividing the inlet and the outlet, and the valve body is provided with a valve cover connecting part; The valve cover is detachably arranged on the valve cover connecting part of the valve body; the valve rod is in threaded connection with the valve cover and extends into the valve cavity through the valve cover; The valve core is fixedly arranged at the lower end of the valve rod and positioned in the valve cavity of the valve body, and stainless steel overlaying layers are arranged at the joint of the valve core and the valve rod; The valve rod is suitable for driving the valve core to be in matched contact with a valve seat in the valve cavity through rotary action, and the communication state between the inlet and the outlet is controlled through the matching of the valve core and the valve seat; The contact surface of the valve seat and the valve core is provided with at least one annular abrasion depth indication groove which is concentric with the sealing surface of the valve seat. Further, a first conical flange is arranged on the periphery of the top of the valve body; The periphery of the bottom of the valve cover is provided with a second conical flange matched with the first conical flange; After the first conical flange and the second conical flange are in butt joint, an annular boss is formed on the periphery of the first conical flange and the second conical flange; The valve with stainless steel weld overlay further comprises a connection mechanism adapted to connect the valve body with the valve cover, the connection mechanism comprising: The inner periphery of the split type clamp is provided with a groove matched with the annular boss; the fastener is arranged on the split type clamp; The split type clamp is suitable for being tightened through the fastening piece, so that the groove of the split type clamp presses the annular boss tightly, and the first conical flange and the second conical flange are tightly and fixedly connected. Further, the annular boss formed after the first conical flange and the second conical flange are in butt joint is a V-shaped boss, and the groove in the inner periphery of the split type clamp is a V-shaped groove matched with the V-shaped boss. Further, a specific structure of the split type clamp is provided, and the split type clamp is composed of two symmetrically arranged semi-annular clamping petals. Further, the fastener comprises a connecting bolt arranged on the connecting lug plate of one of the semi-annular clamping petals and a nut in threaded connection with the connecting bolt, wherein the nut is suitable for being matched with the connecting bolt through rotation, so that the connecting lug plates of the two semi-annular clamping petals are mutually pressed. Further, the butterfly handle is arranged outside the nut. Further, the valve with the stainless steel overlay layer further comprises an operating handle, and the operating handle is mounted on the valve rod. By adopting the technical scheme, the utility model has the following beneficial effects: In the utility model, when the valve rod drives the valve core to be in matched contact with the valve seat through the rotating action, the stainless steel surfacing layer can resist flus