One-way valve for reciprocating pump

Abstract

The utility model discloses a one -way valve belongs to one -way valve technical field's reciprocating pump, including the casing, the inside end of casing is equipped with the valve cavity, the inside of valve cavity is provided with spring cover, the inside of spring cover is provided with the valve rod of through -going, the both ends of valve rod and spring cover are connected with the sliding, the bottom of valve rod is provided with the valve ball, the bottom of valve rod is fixedly connected with valve ball through the mode of welding, and the outer periphery of valve cavity is provided with multichannel flow measuring channel, and the both ends of flow measuring channel are communicated with the both ends of the inside of casing respectively, adopt the mode of flow measuring channel, cooperate with the through slot, make the discharge port and the feed port communicate, make the valve ball not directly rise to the discharge port when moving after receiving the strong impact of fluid material, cause the plugging, make fluid material can pass through the mode of increasing flow, improve the conveying efficiency, when fluid flow increases, make the valve ball rise to the discharge port, lead to the situation of the material blockage, greatly guarantee the liquidity of material conveying.

Description

TECHNICAL FIELD

[0001] The utility model belongs to one -way valve technical field, concretely relates to a one -way valve for reciprocating pump. BACKGROUND

[0002] The working cavity of reciprocating pump and the feed pipeline and the discharge pipeline all need to be provided with one -way valve, thereby sequentially completing the feeding and discharging operation, forming the specific work of feeding and discharging, and improving the overall flow output of reciprocating pump. Figure 1 As shown in the prior art, the piston plate and the flat plate type piston pad are fixed through the piston rod and the nut, the nut is locked through the split pin and the piston rod, the piston rod slides along the guide pipe to open and close the valve body, and the one -way function is realized.

[0003] According to the one -way valve structure for reciprocating pump and the reciprocating pump disclosed by patent No. CN202121958919.3, the valve seat has an inlet, the valve cover has an outlet, the valve ball opens and closes the inlet, and the connecting pipe is connected with the outlet, wherein the buffer sealing element is arranged between the valve cover and the valve seat, the buffer sealing element is located at the inlet and at least partially protrudes from the upper surface of the inlet, so that the valve ball contacts the buffer sealing element first when returning to the valve seat to form a buffer, and then contacts the valve seat to form a seal, so that the valve ball can contact the buffer sealing element first when returning to the valve seat, the valve ball is well buffered when returning to the valve seat, the valve ball is prevented from being bounced up by the valve seat, the inlet can be closed in time, the material return flow is greatly reduced, and the control precision is improved.

[0004] The above scheme still has certain technical defects in actual use, when the material flow of the inlet is too large, the valve ball can be lifted to the bottom of the discharge outlet, causing the valve ball to block the bottom of the discharge outlet, resulting in the condition that the material cannot be discharged, seriously affecting the flowability, and using small flow delivery can reduce the efficiency of material delivery, therefore, the one -way valve for reciprocating pump is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a one -way valve for reciprocating pump to solve the problems in the above background.

[0006] To achieve the above object, the utility model provides following technical scheme: A one-way valve for reciprocating pump, including casing, flow channel and valve ball, the inside of casing is equipped with valve cavity in the middle end, the inside of valve cavity is provided with spring cover, the outside of spring cover is fixedly installed with the inside of valve cavity through the welding mode and is fixedly connected with its inner wall, the inside of spring cover is provided with the valve rod of penetrating, the both ends of valve rod and spring cover are slidingly connected, the bottom of valve rod is provided with valve ball, the bottom of valve rod is fixedly connected with valve ball through the welding mode, the outside of valve cavity is provided with multiple flow channels, both ends of flow channel are communicated with the both ends of the inside of casing respectively.

[0007] Preferably, the top of the valve rod extends to the outside of the spring cover and is fixedly welded with a push plate at the end away from the valve ball, and the outer periphery of the push plate is sealed and slidingly connected with the inner top end wall of the valve cavity through the sealing ring provided thereon.

[0008] Preferably, the inside of the spring cover is provided with a spring, and the middle of the valve rod is provided with a limiting plate, and the both ends of the spring are fixedly connected with the limiting plate and the inner top wall of the spring cover, respectively.

[0009] Preferably, the inner bottom end wall of the valve cavity is provided with a second buffer sealing element, which is fixedly installed on the inner bottom end wall of the valve cavity by gluing.

[0010] Preferably, the bottom of the casing is provided with an inlet, and the inner top wall of the inlet is provided with a first buffer sealing element, which is fixedly installed on the inner wall top end of the inlet by gluing.

[0011] Preferably, the top of the casing is provided with an outlet, and both ends of the flow channel are provided with a through groove, and both ends of the flow channel are communicated with the inlet and the outlet, respectively, through the through groove provided thereon.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. By adopting the flow channel mode, cooperating with the through groove, the outlet is communicated with the inlet, so that when the valve ball moves after receiving the strong impact of the fluid material, it will not directly rise to the outlet, causing blockage, so that the fluid material can increase the flow rate to improve the conveying efficiency. When the fluid flow increases, the valve ball rises to the outlet, causing blockage, greatly ensuring the flowability of material conveying.

[0014] 2. By providing a push rod on the top rod of the valve rod and setting it below the outlet and the through groove, when the material backflows, it will first push the push plate down, and under the action of the spring, it will push the valve rod with the valve ball to quickly descend to the second buffer sealing element for quick sealing, reducing the backflow. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic view of the utility model.

[0016] Figure 2 It is the cross section structure schematic view of the utility model.

[0017] In the figure: 1, shell; 2, feed inlet; 3, discharge outlet; 4, first buffer seal; 5, through slot; 6, flow measuring channel; 7, valve ball; 8, valve cavity; 9, second buffer seal; 10, spring sleeve; 11, valve stem; 12, spring; 13, push plate; 14, limit plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0019] Please refer to Figures 1-2 The utility model provides a kind of one-way valve technical scheme for reciprocating pump: including shell 1, flow measuring channel 6 and valve ball 7, the inside end of shell 1 is provided with valve cavity 8, the inside of valve cavity 8 is provided with spring sleeve 10, the outer periphery of spring sleeve 10 is fixedly installed with the inside of valve cavity 8 by welding mode and is fixedly connected with its inner wall, the inside of spring sleeve 10 is provided with the valve stem 11 of penetration, valve stem 11 is slidably connected with the two ends of spring sleeve 10, the bottom of valve stem 11 is provided with valve ball 7, the bottom of valve stem 11 is fixedly connected with valve ball 7 by welding mode, the outer periphery of valve cavity 8 is provided with multiple flow measuring channels 6, the two ends of flow measuring channel 6 are communicated with the inside two ends of shell 1 respectively.

[0020] Specifically, the top of valve stem 11 extends to the outside of spring sleeve 10 and the end away from valve ball 7 is fixedly welded with push plate 13, the outer periphery of push plate 13 is sealed and slidably connected with the inner wall of the top end of the inside of valve cavity 8 by the sealing ring provided.

[0021] Specifically, the inside of spring sleeve 10 is provided with spring 12, the middle of valve stem 11 is provided with limit plate 14, the two ends of spring 12 are fixedly connected with limit plate 14 and the inside top wall of spring sleeve 10 respectively.

[0022] Specifically, the inside bottom end inner wall of valve cavity 8 is provided with second buffer seal 9, second buffer seal 9 is fixedly installed on the bottom end inner wall of valve cavity 8 by gluing mode.

[0023] Specifically, the bottom of the shell 1 is provided with a feeding port 2, the inner wall of the top end of the feeding port 2 is provided with a first buffer sealing piece 4, and the first buffer sealing piece 4 is fixedly installed on the inner wall of the top end of the feeding port 2 in a gluing manner.

[0024] Specifically, the top of the shell 1 is provided with a discharging port 3, both ends of the flow measuring channel 6 are provided with through grooves 5, and both ends of the flow measuring channel 6 are communicated with the feeding port 2 and the discharging port 3 through the through grooves 5.

[0025] In the embodiment, during use, when the fluid enters from the feeding port 2, the fluid first impacts the valve ball 7, pushes the valve ball 7 to rise, so that the feeding port 2 is communicated with the through groove 5, and the valve ball 7 drives the valve rod 11 to rise, so that the push plate 13 rises to below the through groove 5 at the position where the valve cavity 8 is communicated with the flow measuring channel 6 and the discharging port 3, and the limiting plate 14 is used to compress the spring 12, so that the fluid material enters the inside of the flow measuring channel 6 from the feeding port 2 through the through groove 5, and then flows into the discharging port 3 from the through groove 5 at the other end of the flow measuring channel 6, thereby realizing the conveying of the fluid. In the process, when the flow of the fluid increases, the valve ball 7 is pushed to the first buffer sealing piece 4, and the push plate 13 is below the position where the through groove 5 is communicated with the discharging port 3, so as not to affect the conveying of the fluid. When the conveying of the fluid material stops, the material backflow first pushes down the push plate 13, and under the action of the spring 12, the valve rod 11 drives the valve ball 7 to quickly descend to the second buffer sealing piece 9, so as to quickly seal, thereby avoiding the backflow and effectively avoiding the situation that when the flow of the fluid increases, the valve ball 7 rises to the discharging port 3, so as to cause the material blockage, and greatly ensuring the flowability of the material conveying.

[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A one-way valve for a reciprocating pump comprising a housing (1), a flow measuring channel (6) and a valve ball (7), characterized in that: The inside of the shell (1) is provided with a valve cavity (8), the inside of the valve cavity (8) is provided with a spring sleeve (10), the outer periphery of the spring sleeve (10) is fixedly installed in the inside of the valve cavity (8) and is fixedly connected with the inner wall thereof by welding, the inside of the spring sleeve (10) is provided with a valve rod (11) penetrating therethrough, the valve rod (11) is slidably connected with both ends of the spring sleeve (10), the bottom of the valve rod (11) is provided with a valve ball (7), the bottom of the valve rod (11) is fixedly connected with the valve ball (7) by welding, and the outer periphery of the valve cavity (8) is provided with a plurality of flow measuring channels (6), both ends of the flow measuring channel (6) are respectively communicated with both ends of the inside of the shell (1).

2. A check valve for a reciprocating pump according to claim 1, characterized in that: The top of the valve rod (11) extends to the outside of the spring sleeve (10) and is fixedly welded with a push plate (13) away from the valve ball (7) at one end, and the outer periphery of the push plate (13) is sealed and slidably connected with the inner top wall of the valve cavity (8) by the sealing ring arranged thereon.

3. A check valve for a reciprocating pump according to claim 1, wherein: The inside of the spring sleeve (10) is provided with a spring (12), the middle of the valve rod (11) is provided with a limiting plate (14), and both ends of the spring (12) are fixedly connected with the limiting plate (14) and the inner top wall of the spring sleeve (10) respectively.

4. A check valve for a reciprocating pump according to claim 1, wherein: The inner bottom end wall of the valve cavity (8) is provided with a second buffer sealing element (9), and the second buffer sealing element (9) is fixedly installed on the inner bottom end wall of the valve cavity (8) by gluing.

5. A check valve for a reciprocating pump according to claim 1, wherein: The bottom of the shell (1) is provided with a feed inlet (2), the top end inner wall of the feed inlet (2) is provided with a first buffer sealing element (4), and the first buffer sealing element (4) is fixedly installed on the inner wall top end of the feed inlet (2) by gluing.

6. A check valve for a reciprocating pump according to claim 1, wherein: The top of the shell (1) is provided with a discharge port (3), both ends of the flow measuring channel (6) are provided with a through groove (5), and both ends of the flow measuring channel (6) are communicated with the feed inlet (2) and the discharge port (3) respectively through the through grooves (5) arranged thereon.

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