Thermometer storage device for infection control

Abstract

The application belongs to the technical field of thermometers, and discloses an infection control thermometer storage device, which comprises a disinfectant water tank, a plurality of groups of thermometer bodies are arranged in the disinfectant water tank, and sponge pads are intermittently connected to the bottom ends of the thermometer bodies in each group; when the rotating disc is passively rotated, the connected T-shaped resisting plate is rotated, so that when the T-shaped resisting plate no longer resists the L-shaped baffle, the L-shaped baffle and the thermometer body are driven to move upwards due to the elastic expansion and contraction force of the two springs at the bottom end, a section of rod body close to the top of the thermometer body is projected out of the immersed disinfectant water, the squeezed force is generated in the inside of the connected bellows, the clean water body previously drawn in is sprayed out from the groove hole disc through the delivery pipe, the sprayed water body naturally falls on the thermometer body below, and the vertical disinfection means can completely avoid mutual collision between the plurality of thermometer bodies when the thermometer bodies are taken and placed, and damage is caused.

Description

Technical Field

[0001] This invention belongs to the field of thermometer technology, specifically a thermometer storage device for infection control. Background Technology

[0002] A clinical thermometer is a maximum temperature thermometer, also known as a "medical thermometer". It can record the highest temperature that the thermometer has ever measured. The working substance of a clinical thermometer is mercury. Its glass bulb has a much larger volume than the capillary tube above it. Due to the influence of body temperature, the mercury in the bulb undergoes a slight change. The expansion of the mercury volume causes a significant change in the length of the mercury column in the tube.

[0003] Currently, before storing thermometers in clinics, they need to be soaked in disinfectant for about 30 minutes. During the disinfection process, the thermometers to be disinfected are placed together in a disinfectant tank. However, if several thermometers are gathered together, they are prone to bumping and knocking, which may cause damage during the handling process. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides a thermometer storage device for infection control.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a thermometer storage device for infection control, comprising a disinfection tank, wherein multiple sets of thermometer bodies are provided inside the disinfection tank, and a sponge pad is intermittently attached to the bottom end of each set of thermometer bodies. The bottom end of each set of sponge pads is fixedly connected to the inner wall of the bottom end of the disinfection tank. The disinfection tank is provided with a sterilization and disinfection section, which includes an L-shaped frame fixedly connected to the outer wall of one end of the disinfection tank. An electric cylinder is fixedly connected to the outer wall of one end of the L-shaped frame, and an E-shaped rubber plate is fixedly connected to the movable end of the electric cylinder. One side of the E-shaped rubber plate is slidably connected to the corresponding side corner of the disinfection tank. The E-shaped rubber plate is provided with three sets of friction rotation structures, and below each set of friction rotation structures is a horizontal upward moving structure that drives each set of thermometer bodies to move upward.

[0006] Preferably, each set of friction rotation structures includes two rubber ring plates, and a turntable is fixedly connected to the inner wall of each of the two rubber ring plates. Four arc grooves are opened around each of the two turntables. A T-shaped slide rod is slidably connected to the inner wall of each set of arc grooves. A sponge ring is slidably connected to the center of each of the two turntables. The outer wall of each set of thermometer bodies can be intermittently slidably connected to the inner wall of each set of sponge rings.

[0007] Preferably, each of the two turntables has a grooved plate slidably connected to its bottom outer wall. Each grooved plate is fixedly connected to the top outer wall of the disinfection tank. Each of the two grooved plates has four rectangular slots slidably connected to its inner wall. A rectangular sliding plate is slidably connected to the inner wall of each set of rectangular slots. The bottom end of each set of T-shaped sliding rods is fixedly connected to one side of the top of each set of rectangular sliding plates.

[0008] Preferably, a sealing plate is fixedly connected to one side of the bottom of each set of rectangular slide plates, the top outer wall of each set of sealing plates is slidably connected to the bottom outer wall of each set of slots, and a T-shaped abutment is fixedly connected to one end of the outer wall of each set of turntables.

[0009] Preferably, each of the horizontal upward moving structures includes two L-shaped railings that are slidably connected to the top plate of the disinfection tank, and the top outer walls of the two L-shaped railings can be intermittently fitted and slidably connected to the bottom outer walls of the two T-shaped abutments.

[0010] Preferably, a sleeve is fixedly connected to the other end of each of the two L-shaped panels, and multiple elastic telescopic members are fixedly connected around the inner wall of each of the two sleeves. The other end of each set of elastic telescopic members can be intermittently connected to the outer wall of each set of thermometer bodies, and the other end of each set of elastic telescopic members is made of sponge.

[0011] Preferably, two springs and a corrugated pipe are fixedly connected to the outer walls of the bottom upper and lower ends of the two L-shaped rails, respectively. The other ends of the two springs are fixedly connected to the inner wall of the bottom end of the disinfection tank. A support plate is fixedly connected to the top end of a set of corrugated pipes, and the two ends of the support plate are fixedly connected to the inner walls of the two ends of the disinfection tank, respectively.

[0012] Preferably, a conveying pipe is fixedly connected to one end of each set of corrugated pipes near the top, a slotted disc is fixedly connected to the other end of each set of conveying pipes, and a Y-shaped pipe is fixedly connected to the other end of each set of corrugated pipes near the top.

[0013] Preferably, a water replenishment tank is provided at the top of the Y-shaped tube, and the bottom outer wall of the water replenishment tank is fixedly connected to the top outer wall of the disinfection tank. Specifically, the tube body of the Y-shaped tube is also fixedly connected to the top plate of the disinfection tank.

[0014] Preferably, a sealing plug is tightly fitted into the inner wall of the top of the water tank, and a one-way valve is fixedly connected to the body of the Y-shaped pipe and the two delivery pipes.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] When the turntable rotates passively, it also drives the connected T-shaped abutment to rotate. When the T-shaped abutment no longer blocks the L-shaped guardrail, the L-shaped guardrail moves upward due to the elastic tension of the two springs at its bottom. This causes the thermometer body, which is limited and connected by multiple elastic telescopic components in the inner wall of the sleeve, to move upward together. This causes the section of the thermometer body near the top to protrude out of the disinfectant water. The L-shaped guardrail, driven by the two springs, moves upward along with the corrugated pipe, creating internal pressure. This allows the pre-pumped clean water to be sprayed out through the pipe from the slot plate. The sprayed water naturally falls onto the thermometer body below, first rinsing the top section of the thermometer body. This upright disinfection method completely avoids collisions and damage between multiple thermometer bodies when they are being removed or placed.

[0017] This invention allows for manual pulling of an L-shaped baffle, causing it to continuously move upwards and compress the corrugated pipe, thus moving the thermometer body upwards. The continuously moving thermometer body gradually passes through the perforated plate, the tray, and the turntable, eventually contacting a sponge ring installed on the turntable. The sponge ring wipes away any water on the thermometer body, allowing it to dry completely before it leaves the disinfection tank. Meanwhile, the continuously moving corrugated pipe continuously supplies pressurized water to the perforated plate. A one-way valve on the pipe controls water flow, allowing only outflow. When the L-shaped baffle is manually pressed back to its original position, the corrugated pipe generates suction, drawing water from the replenishment tank through a Y-shaped pipe. A one-way valve on the Y-shaped pipe controls water flow, allowing only inflow and no outflow, thereby replenishing the water supply. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A magnified view of the structure at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the disinfection tank of the present invention;

[0021] Figure 4 This is a partial structural diagram of the sterilization and disinfection section of the present invention;

[0022] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle;

[0023] Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure at point C in the middle;

[0024] Figure 7 This is a partial structural diagram of the sterilization and disinfection section of the present invention.

[0025] In the picture:

[0026] 1. Disinfection tank; 11. Thermometer body; 12. Sponge pad;

[0027] 2. Sterilization and disinfection section; 21. L-shaped frame; 22. Electric cylinder; 23. E-shaped rubber plate; 24. Rubber ring plate; 25. Turntable; 26. Arc groove; 27. T-shaped slide bar; 28. Sponge ring; 29. ​​Groove tray; 230. Rectangular slide plate; 231. Sealing plate; 232. T-shaped stop plate; 233. L-shaped guardrail; 234. Sleeve disc; 235. Elastic telescopic component; 236. Spring; 237. Corrugated pipe; 238. Delivery pipe; 239. Grooved plate; 240. Y-shaped pipe; 241. Water supply tank; 242. Sealing plug; 243. One-way valve. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1 to 7 As shown, the present invention provides a thermometer storage device for infection control, including a disinfection tank 1. The disinfection tank 1 contains multiple sets of thermometer bodies 11. Each set of thermometer bodies 11 has a sponge pad 12 intermittently attached to its bottom end. The bottom end of each set of sponge pads 12 is fixedly connected to the inner wall of the bottom end of the disinfection tank 1. The disinfection tank 1 is provided with a sterilization and disinfection section 2. The sterilization and disinfection section 2 includes an L-shaped frame 21 fixedly connected to the outer wall of one end of the disinfection tank 1. An electric cylinder 22 is fixedly connected to the outer wall of one end of the L-shaped frame 21. An E-shaped rubber plate 23 is fixedly connected to the movable end of the electric cylinder 22. One side of the E-shaped rubber plate 23 is slidably connected to the corresponding side corner of the disinfection tank 1. The E-shaped rubber plate 23 is provided with three sets of friction rotation structures. Below each set of friction rotation structures is a horizontal upward movement structure that drives each set of thermometer bodies 11 to move upward.

[0030] Using the above scheme: After the thermometer body 11 is immersed in the disinfection tank 1 for thirty minutes, the electric cylinder 22 on the L-shaped frame 21 is activated, causing the E-shaped rubber plate 23 to move horizontally on the disinfection tank 1. This movement, through friction, causes the corresponding rubber ring plate 24 and turntable 25 to rotate, thereby causing multiple T-shaped sliding rods 27 to slide within the arc groove 26. This, in turn, causes the connected rectangular sliding plate 230 and sealing plate 231 to extend and move horizontally on the tray 29, no longer obstructing the center of the tray 29. This facilitates the subsequent upward movement of the thermometer body 11 away from the disinfection tank 1. When the turntable 25 rotates passively, the T-shaped abutment plate 232 no longer obstructs the L-shaped guardrail 233, and the L-shaped guardrail... The plate 233 will move upward due to the elastic extension and contraction of the two springs 236 at the bottom, thereby moving the thermometer body 11 upward and protruding from the disinfectant water. The corrugated pipe 237 will generate a squeezing force, which will cause the clean water that was previously drawn in to be sprayed out from the slot plate 239 through the delivery pipe 238. The sprayed water will fall naturally onto the thermometer body 11 below, first cleaning the top rod with water. The L-shaped plate 233 can be pulled manually, and the thermometer body 11 will gradually pass through the slot plate 239, the slot plate 29, and the turntable 25, and come into contact with the sponge ring 28 installed on the turntable 25. The sponge ring 28 can wipe and absorb the water on the thermometer body 11, making it dry and detached from the disinfectant tank 1.

[0031] Each set of friction-rotating structures includes two rubber ring plates 24. A turntable 25 is fixedly connected to the inner wall of each rubber ring plate 24. Four arc grooves 26 are circumferentially formed on each turntable 25. A T-shaped sliding rod 27 is slidably connected to the inner wall of each arc groove 26. A sponge ring 28 is adhesively connected to the center of each turntable 25. The outer wall of each thermometer body 11 can intermittently slide against the inner wall of each sponge ring 28. A groove 29 is slidably connected to the bottom outer wall of each turntable 25. Each groove 29 is connected to the disinfection tank 1. The top outer wall is fixedly connected through the two slots 29. Each slot has four rectangular slots, and a rectangular slide plate 230 is slidably connected to the inner wall of each rectangular slot. The bottom end of each T-shaped slide rod 27 is fixedly connected to the top side plate of each rectangular slide plate 230. A sealing plate 231 is fixedly connected to the bottom side outer wall of each rectangular slide plate 230. The top outer wall of each sealing plate 231 is slidably connected to the bottom outer wall of each slot 29. A T-shaped abutment plate 232 is fixedly connected to one end outer wall of each turntable 25.

[0032] The above scheme is adopted: the electric cylinder 22 on the L-shaped frame 21 is activated, which drives the E-shaped rubber plate 23 to move horizontally on the disinfection tank 1. The friction force of the movement drives the corresponding rubber ring plate 24 to rotate. The passively rotating rubber ring plate 24 will drive the turntable 25 to rotate simultaneously, thereby causing multiple T-shaped slide bars 27 to slide within the arc groove 26. This, in turn, drives the connected rectangular slide plate 230 and sealing plate 231 to move and extend on the tray 29, eliminating the obstruction at the center of the tray 29. This facilitates the subsequent upward movement of the thermometer body 11 away from the disinfection tank 1. When the disinfection is carried out in the disinfection tank 1, the sealing of the center of the tray 29 is also to avoid infection of the thermometer body 11 inside the disinfection tank 1 and reduce the disinfection effect.

[0033] Each horizontally moving structure includes two L-shaped railings 233 that are slidably connected to the top plate of the disinfection tank 1. The top outer walls of the two L-shaped railings 233 can intermittently slide and fit against the bottom outer walls of the two T-shaped abutments 232. A sleeve plate 234 is fixedly connected to the other end of each L-shaped railing 233. Multiple sleeve plates 234 are fixedly connected around the inner wall of each sleeve plate 234. The other end of each set of sleeve plates 234 can connect to the thermometer body 11 of each set. The outer wall is intermittently fitted and connected, and the other end of each set of trays 234 is made of sponge. Two springs 236 and a corrugated pipe 237 are fixedly connected to the outer walls of the bottom upper and lower ends of the two L-shaped rails 233 respectively. The other ends of the two springs 236 are fixedly connected to the inner wall of the bottom end of the disinfection tank 1. A support plate is fixedly connected to the top of a set of corrugated pipes 237. The two ends of the support plate are fixedly connected to the inner walls of the two ends of the disinfection tank 1 respectively.

[0034] Using the above scheme: When the turntable 25 rotates passively, it will drive the connected T-shaped abutment 232 to rotate as well. When the T-shaped abutment 232 no longer blocks the L-shaped guardrail 233, the L-shaped guardrail 233 will be driven upward by the elastic extension force of the two springs 236 at the bottom. This will drive the thermometer body 11, which is limited and connected by multiple elastic extension parts 235 in the inner wall of the sleeve 234, to move upward together. This will cause the rod of the thermometer body 11 near the top to protrude out of the disinfectant water. The L-shaped guardrail 233, driven by the elasticity of the two springs 236, will move upward along with the corrugated pipe 237, generating a squeezing force inside. This will allow the clean water that has been pumped in beforehand to be sprayed out from the slotted plate 239 through the delivery pipe 238. The sprayed water will naturally fall onto the thermometer body 11 below, first cleaning the top rod with water.

[0035] A set of corrugated pipes 237 are all connected to a conveying pipe 238 through one end near the top. A slotted plate 239 is connected to the other end of the set of conveying pipes 238 through. A Y-shaped pipe 240 is connected to the other end of the set of corrugated pipes 237 through the top. A water replenishment tank 241 is provided at the top of the Y-shaped pipe 240. The bottom outer wall of the water replenishment tank 241 is fixedly connected to the top outer wall of the disinfection tank 1. The pipe body of the Y-shaped pipe 240 is also connected to the top plate of the disinfection tank 1 through. A sealing plug 242 can be tightly clamped in the top inner wall of the water replenishment tank 241. A one-way valve 243 is fixedly connected to the pipe body of the Y-shaped pipe 240 and the two conveying pipes 238.

[0036] Using the above scheme: Manual force can be applied to the L-shaped baffle 233 to pull it upwards, causing it to continuously move upwards and compress the corrugated pipe 237, thus moving the thermometer body 11 upwards. The continuously moving thermometer body 11 will gradually pass through the perforated plate 239, the tray 29, and the turntable 25, contacting the sponge ring 28 installed on the turntable 25. The sponge ring 28 can wipe away the water on the thermometer body 11, allowing it to dry completely before leaving the disinfection tank 1. Meanwhile, the continuously moving corrugated pipe 237 will continuously supply pressurized water to the perforated plate 239. The one-way valve 243 on the pipe 238 controls the water to flow out but not in. When the L-shaped baffle 233 is manually pressed back to its original position, the corrugated pipe 237 generates suction force, drawing water from the replenishment tank 241 through the Y-shaped pipe 240. The one-way valve 243 on the Y-shaped pipe 240 controls the water to flow in but not out, thus replenishing the water supply.

[0037] It should be noted that when the passive expansion of the sealing plate 231 no longer blocks the tray 29, a suction tube can be introduced from it to suction and replace the liquid in the disinfectant tank 1. The thermometer body 11 entering the disinfectant tank 1 will first come into contact with the sponge pad 12 soaked in disinfectant. The end of the elastic telescopic component 235 that contacts the outer wall of the thermometer body 11 is also made of sponge. This avoids the fact that when the thermometer body 11 is vertically restricted, part of its outer wall will not be able to come into contact with the disinfectant for disinfection. This completely avoids the collision and damage between multiple thermometer bodies 11 when they are taken out and put in. Since the sponge ring 28 on the turntable 25 is adhesively connected, it can be replaced at any time or replaced after each use.

[0038] The working principle and usage process of this invention are as follows: After the thermometer body 11 is immersed in the disinfection tank 1 for 30 minutes, the electric cylinder 22 on the L-shaped frame 21 is activated, which drives the E-shaped rubber plate 23 to perform horizontal limiting translation on the disinfection tank 1. The friction force of the movement drives the corresponding rubber ring plate 24 and turntable 25 to rotate, thereby causing multiple T-shaped sliding rods 27 to slide within the arc groove 26, which in turn drives the connected rectangular sliding plate 230 and sealing plate 231 to perform limited expansion translation on the tray 29. The center position of the tray 29 is no longer blocked, which makes it easier for the thermometer body 11 to move upward and detach from the disinfection tank 1.

[0039] Meanwhile, when the turntable 25 rotates passively, it also drives the connected T-shaped abutment 232 to rotate. When the T-shaped abutment 232 no longer blocks the L-shaped guardrail 233, the L-shaped guardrail 233 moves upward due to the elastic tension of the two springs 236 at its bottom. This causes the thermometer body 11, which is limited and connected by multiple elastic telescopic components 235 in the inner wall of the sleeve 234, to move upward as well, protruding out of the disinfectant water. The corrugated pipe 237 generates pressure, causing the pre-pumped clean water to be sprayed out through the pipe 238 from the slotted plate 239. The sprayed water naturally falls downwards. The thermometer body 11 is rinsed with water. Then, the L-shaped baffle 233 can be pulled to move the thermometer body 11 upward. The thermometer body 11, which moves upward, will gradually pass through the slotted plate 239, the slotted plate 29, and the turntable 25, and come into contact with the sponge ring 28 installed on the turntable 25. The sponge ring 28 can wipe and absorb the water on the thermometer body 11, so that it can be removed from the disinfection water tank 1 dry. The corrugated pipe 237, which moves upward, will continuously provide pressurized water to the slotted plate 239. The one-way valve 243 on the pipe 238 controls the water to only flow out and not in, and the one-way valve 243 on the Y-shaped pipe 240 controls the water to only flow in and not out.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An infection control thermometer storage device comprising a disinfectant water tank (1), characterized in that: The disinfection water tank (1) is internally provided with a plurality of groups of thermometer bodies (11), the bottom end of each group of the thermometer bodies (11) is intermittently connected with a sponge pad (12), the bottom end of each group of the sponge pads (12) is fixedly connected with the inner wall of the bottom end of the disinfection water tank (1), the disinfection water tank (1) is provided with a sterilization part (2), the sterilization part (2) comprises an L-shaped rack (21) fixedly connected to the outer wall of one end of the disinfection water tank (1), the outer wall of one end of the L-shaped rack (21) is fixedly connected with an electric cylinder (22), the movable end of the electric cylinder (22) is fixedly connected with an E-shaped rubber plate (23), one side plate of the E-shaped rubber plate (23) is slidingly connected with the corresponding side plate corner of the disinfection water tank (1), the E-shaped rubber plate (23) is provided with three groups of friction rotating structures, and the lower portion of each group of the friction rotating structures is provided with a horizontal lifting structure for lifting each group of the thermometer bodies (11) upward; Each group of the friction rotating structures comprises two rubber ring plates (24), the inner wall of each of the two rubber ring plates (24) is fixedly connected with a rotating disc (25), four arc grooves (26) are penetratingly and circumferentially formed in the rotating disc (25), a T-shaped sliding rod (27) is slidingly connected in the inner wall of each of the arc grooves (26), and a sponge ring (28) is adhered and connected in the center of the rotating disc (25), and the outer wall of each group of the thermometer bodies (11) is intermittently and slidingly connected with the inner wall of each group of the sponge rings (28); The bottom end of each of the two rotating discs (25) is slidingly connected with a groove disc (29), the groove disc (29) is penetratingly and fixedly connected with the top end of the disinfection water tank (1), four rectangular grooves are penetratingly formed in the disc body of each of the two groove discs (29), and a rectangular sliding plate (230) is slidingly connected in the inner wall of each of the rectangular grooves, and the bottom end of each group of the T-shaped sliding rods (27) is fixedly connected with the top end of each group of the rectangular sliding plates (230); The bottom end of each group of the rectangular sliding plates (230) is fixedly connected with an enclosing plate (231), the top end of each group of the enclosing plates (231) is slidingly connected with the bottom end of each group of the groove discs (29), and the outer wall of one end of each group of the rotating discs (25) is fixedly connected with a T-shaped resisting plate (232); Each group of the horizontal lifting structures comprises two L-shaped fence plates (233) penetratingly and slidingly connected with the top end plate of the disinfection water tank (1), and the top end of each of the two L-shaped fence plates (233) is intermittently and slidingly connected with the bottom end of each of the T-shaped resisting plates (232). The other end of the two L-shaped bars (233) is fixedly connected with a sleeve disc (234), the inner wall of the two sleeve discs (234) is fixedly connected with a plurality of elastic expansion members (235), the other end of each group of elastic expansion members (235) is intermittently connected with the outer wall of each group of thermometer bodies (11), and the other end of each group of elastic expansion members (235) is partially composed of a sponge; The outer wall of the bottom of the two L-shaped bars (233) is fixedly connected with two springs (236) and a bellows (237), the other end of the two springs (236) is fixedly connected with the inner wall of the bottom of the disinfection water tank (1), the top of the bellows (237) is fixedly connected with a support plate, and the two ends of the support plate are fixedly connected with the inner wall of the two ends of the disinfection water tank (1); The end of the bellows (237) near the top is fixedly connected with a delivery pipe (238), the other end of the delivery pipe (238) is fixedly connected with a slot disc (239), and the other end of the bellows (237) near the top is fixedly connected with a Y-shaped pipe (240).

2. The infection control thermometer storage device of claim 1, wherein: The top of the Y-shaped pipe (240) is provided with a water supplement tank (241), the bottom of the water supplement tank (241) is fixedly connected with the top of the disinfection water tank (1), and the pipe body of the Y-shaped pipe (240) is fixedly connected with the top plate of the disinfection water tank (1).

3. The infection control thermometer storage device of claim 2, wherein: The inner wall of the top of the water supplement tank (241) is tightly clamped with a sealing plug (242), and the pipe body of the Y-shaped pipe (240) and the two delivery pipes (238) are fixedly connected with a one-way valve (243).

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