CN212028629U

CN212028629U - Pneumatic three-way descaling bidirectional protection device

Info

Publication number: CN212028629U
Application number: CN202020659945.5U
Authority: CN
Inventors: 张长江; 周望发; 程自华
Original assignee: Hubei High Middle Pressure Valve Co ltd
Current assignee: Hubei High Middle Pressure Valve Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-11-27
Anticipated expiration: 2030-04-27

Abstract

The utility model discloses a pneumatic three-way descaling bidirectional protection device in the technical field of valves, which comprises a bracket, a valve body is screwed on the top wall of the bracket, a plunger is arranged in the inner cavity of the valve body, a bush is sleeved on the outer wall of the plunger, the bush is clamped in the inner cavity of the valve body, a valve clack cover is fixedly arranged on the top wall of the plunger, a valve rod is clamped in the inner cavity of the valve clack cover, a pressure sleeve and a pressure cover are clamped in the inner cavity of the valve body, the pressure sleeve is positioned on the upper part of the bush, the pressure cover is positioned on the upper part of the pressure sleeve, a valve cover is screwed on the top wall of the valve cover, a cylinder is screwed on the inner cavity of the cylinder, an upper cover of the cylinder is screwed on the top wall of the piston, only one water outlet is communicated at the initial stage of the device, two water outlets at the middle stage are simultaneously communicated, only another water outlet, the function of protecting the normal operation of the water pump is achieved.

Description

Pneumatic three-way descaling bidirectional protection device

Technical Field

The utility model discloses a pneumatic tee bend two-way protection device that descales specifically is valve technical field.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like. The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems.

In the existing descaling valve, when two ports are not communicated easily in the conversion process, two groups of valves are needed, one group of shutoff valves and one group of circulating valves are matched on a system, otherwise, a pump-out accident is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic tee bend two-way protection device that descales to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a pneumatic three-way descaling bidirectional protection device comprises a support, wherein a valve body is screwed on the top wall of the support, a plunger is arranged in an inner cavity of the valve body, a bushing is sleeved on the outer wall of the plunger and clamped in the inner cavity of the valve body, a valve clack cover is fixedly installed on the top wall of the plunger, a valve rod is clamped in the inner cavity of the valve clack cover, a pressing sleeve and a pressing cover are clamped in the inner cavity of the valve body, the pressing sleeve is located on the upper portion of the bushing, the pressing cover is located on the upper portion of the pressing sleeve, a valve cover is screwed on the top wall of the valve body, an air cylinder is screwed on the top wall of the valve cover, a piston is clamped in the inner cavity of the air cylinder, the top end of the valve rod is connected with the bottom wall of the piston, an upper valve rod is installed on the top wall of the piston, an upper cover of, and the outer wall of the switch bracket is provided with a runner, and the runner is connected with the upper valve rod.

Preferably, the top wall joint of gland has the copper sheathing, the copper sheathing is located the outer wall of valve rod.

Preferably, a locking nut is arranged at the joint of the piston and the upper valve rod.

Preferably, the outer wall of the valve cover is provided with a vent pipe, and the upper part of the inner cavity of the valve body is communicated with the vent pipe.

Compared with the prior art, the beneficial effects of the utility model are that: the device is arranged on a descaling terminal pipeline at the outlet of a water pump, the valve is an inlet and two descaling outlets, A is the inlet, the piston is communicated with the descaling outlet B when going upwards (the A port is communicated with the B port when the fault is cut off, and the C port is communicated with the descaling outlet when going downwards. Two export interconvertions, in the conversion process, two exports can have short time intercommunication simultaneously (prevent that two mouths from all not leading to the time, cause the pump accident of building out), promptly: only one water outlet is communicated at the initial stage, two water outlets can be communicated temporarily at the middle stage, only the other water outlet is communicated at the later stage, and after the conversion is in place, only one outlet is communicated, so that the condition that the two water outlets are completely closed in the conversion process can not occur, and the normal operation of the water pump is protected.

Drawings

FIG. 1 is a schematic front sectional view of the pneumatic three-way descaling bidirectional protection device of the present invention;

FIG. 2 is a partial schematic view of the plunger of the present invention moving upward;

FIG. 3 is a partial schematic view of the downward movement of the plunger according to the present invention;

fig. 4 is the left view schematic diagram of the pneumatic three-way descaling two-way protection device of the utility model.

In the figure: the valve comprises a support 1, a valve body 2, a plunger 3, a bushing 4, a valve clack cover 5, a valve rod 6, a pressing sleeve 7, a pressing cover 8, a copper sleeve 9, a valve cover 10, a piston 11, a locking nut 12, an air cylinder 13, an upper valve rod 14, an upper cover of the air cylinder 15, an operator 16 and a switch support 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a pneumatic three-way descaling bidirectional protection device, the device has only one water outlet at the initial stage, two water outlets at the middle stage can be simultaneously communicated transiently, and only another water outlet at the later stage is communicated in place, after the conversion is in place, only one water outlet is communicated, the situation that the two water outlets are completely closed in the conversion process can not occur, the normal operation of a protection water pump is realized, please refer to figure 1, the device comprises a bracket 1, a valve body 2 is screwed on the top wall of the bracket 1, a plunger 3 is arranged in the inner cavity of the valve body 2, a bush 4 is sleeved on the outer wall of the plunger 3, the bush 4 is clamped in the inner cavity of the valve body 2, a valve clack cover 5 is fixedly arranged on the top wall of the plunger 3, a valve rod 6 is clamped in the inner cavity of the valve clack cover 5, a press sleeve 7 and a press cover 8 are clamped in the inner cavity of the valve body 2, the copper bush 9 is located the outer wall of the valve rod 6, the top wall of the valve body 2 is in threaded connection with the valve cover 10, the outer wall of the valve cover 10 is provided with a vent pipe, the upper portion of the inner cavity of the valve body 2 is communicated with the vent pipe, the top wall of the valve cover 10 is in threaded connection with the cylinder 13, the inner cavity of the cylinder 13 is connected with the piston 11 in a clamping mode, the top end of the valve rod 6 is connected with the bottom wall of the piston 11, a locking nut 12 is arranged at the joint of the piston 11 and the upper valve rod 14, the upper valve rod 14 is installed on the top wall of the piston 11, the top wall of the cylinder 13 is in threaded connection with the upper cylinder cover 15, the top end of the upper cylinder cover 14 penetrates through the top wall of the upper cylinder cover 15, the.

While the invention has been described above with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the various embodiments disclosed herein can be used in any combination with one another, and the description of such combinations that is not exhaustive in this specification is merely for brevity and resource saving. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a pneumatic tee bend two-way protection device that removes scale, includes support (1), its characterized in that: the top wall spiro union of support (1) has valve body (2), the inner chamber of valve body (2) is provided with plunger (3), bush (4) has been cup jointed to the outer wall of plunger (3), bush (4) joint is in the inner chamber of valve body (2), the top wall fixed mounting of plunger (3) has valve clack lid (5), the inner chamber joint of valve clack lid (5) has valve rod (6), the inner chamber joint of valve body (2) has pressure cover (7) and gland (8), pressure cover (7) are located the upper portion of bush (4), gland (8) are located the upper portion of pressure cover (7), the top wall spiro union of valve body (2) has valve gap (10), the top wall spiro union of valve gap (10) has cylinder (13), the inner chamber joint of cylinder (13) has piston (11), the top of valve rod (6) is connected with the diapire of piston (11), valve rod (14) are installed to the roof of piston (11), the roof spiro union of cylinder (13) has cylinder upper cover (15), the roof of cylinder upper cover (15) is run through on the top of valve rod (14), the roof spiro union of cylinder upper cover (15) has switch support (17), the outer wall of switch support (17) is provided with runner (16), runner (16) are connected with last valve rod (14).

2. The pneumatic three-way descaling two-way protection device according to claim 1, wherein: the roof joint of gland (8) has copper sheathing (9), copper sheathing (9) are located the outer wall of valve rod (6).

3. The pneumatic three-way descaling two-way protection device according to claim 1, wherein: and a locking nut (12) is arranged at the joint of the piston (11) and the upper valve rod (14).

4. The pneumatic three-way descaling two-way protection device according to claim 1, wherein: the outer wall of the valve cover (10) is provided with a vent pipe, and the upper part of the inner cavity of the valve body (2) is communicated with the vent pipe.