Feed storage equipment for pig breeding
By introducing a jacketed cavity design and a spherical valve core structure into feed storage equipment for pig farming, the problems of clumping and mold growth during feed storage have been solved, resulting in improved heat preservation and fluidity, and reduced risk of mold and dust contamination.
Patent Information
- Application Number
- CN202520603223.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-02
AI Technical Summary
Existing feed storage equipment for pig farming lacks effective heat preservation and moisture protection design, which makes the feed prone to clumping and mold growth. In addition, the traditional valve structure is prone to crushing and breaking the feed, producing dust and contaminating the stored feed.
The design employs a sandwich cavity as an insulation layer or heating medium channel, combined with a spherical valve core and an annular bend, to prevent feed from being squeezed and broken by using a rotary switch, and to remove residual feed through a cleaning port, thereby enhancing fluidity and uniform distribution.
It effectively prevents feed from clumping and becoming moldy, reduces nutrient loss, lowers the risk of mold contamination, and ensures feed quality and storage efficiency.
Smart Images
Figure CN223905742U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of feed storage, especially to a feeding material storage equipment for pig breeding. BACKGROUND
[0002] In the pig breeding industry, the storage and discharge of feeding material is one of the key links, which directly affects the breeding efficiency and the quality of feed. At present, the feed storage equipment commonly used in the pig breeding industry is mostly traditional storage silos or silo structures. These devices are usually composed of single-layer metal or plastic materials, lack effective heat preservation and moisture-proof design, especially in cold seasons or humid environments, the feed is easily affected by the external temperature and appears to be caked and moldy, resulting in the loss of nutritional ingredients of the feed and even causing pig diseases.
[0003] The existing equipment's discharging system mostly adopts simple gate valve or plate valve structure control. When the valve is closed, it will cause extrusion to the feed particles flowing through, and then cause the feed to be crushed and form feed powder that enters the gap of the valve, so that it is difficult to clean. These crushed feed powders will gradually accumulate in the gap, which not only affects the sealing of the valve and makes it unable to accurately reset, but also causes the moldy pollution of the other feed particles stored in the inner tank. SUMMARY
[0004] The utility model aims at providing a feeding material storage equipment for pig breeding to solve one of the above problems.
[0005] Specifically, the utility model realizes the following technical scheme:
[0006] A feeding material storage equipment for pig breeding, comprising an outer tank body and an inner tank body, a sandwich cavity is provided between the tank body and the outer tank body, an intermediate bottom of the inner tank body is provided with a discharge hopper extending to the bottom of the outer tank body, and a discharge valve is provided at the outlet end position of the discharge hopper.
[0007] The discharge valve comprises a valve shell, the inside of the valve shell is provided with a valve cavity flow channel that is communicated with the discharge hopper and is integrally formed, the middle position of the valve cavity flow channel is in a spherical cavity, a ball valve core is adaptively provided in the inside of the spherical cavity, a blanking passage that is communicated with the valve cavity flow is penetrated through the inside of the ball valve core, and the ball valve core realizes the on-off of the valve cavity flow channel through rotation setting.
[0008] Cleaning ports that are communicated with the valve cavity flow channel are further provided on both sides of the valve shell.
[0009] Based on the above technical scheme, the design of the interlayer cavity between the inner tank body and the outer tank body can significantly improve the storage environment of the feed. Specifically, the interlayer cavity can serve as a heat preservation layer or a heating medium channel. By injecting hot water, hot air or other heating media into the interlayer cavity, the caking or mildewing of the feed due to changes in external temperature can be prevented. Especially in cold seasons or humid environments, this design can ensure that the feed remains dry and at an appropriate temperature, thereby avoiding the loss of nutritional ingredients and reducing the risk of pig diseases caused by feed deterioration. Meanwhile, in this scheme, the discharge valve adopts a spherical valve core design. Compared with the traditional gate valve or plate valve structure, the spherical valve core mainly uses a rotary switch method, thereby effectively avoiding the problem of feed particles being crushed by the traditional valve plate when the valve is closed. This reduces the generation of powder dust, and the spherical valve core reduces the gap between the valve and the valve shell, preventing feed powder dust from accumulating in the gap and causing mildewing, thereby greatly reducing the risk of feed contamination. In addition, by providing cleaning ports on both sides of the valve housing, the feed particles remaining in the discharge channel inside the spherical valve core can be cleaned and collected after the spherical valve core is rotated and closed, further reducing the risk of feed mildewing and contamination.
[0010] Further, a rotating handle is arranged in the middle of the outer part of the valve housing, one end of the rotating handle extending into the valve cavity flow channel and being connected with the spherical valve core. Through the arrangement of the rotating handle, the operating personnel can rotate the rotating handle to drive the spherical valve core to rotate, so as to realize the opening or closing of the discharge valve.
[0011] Further, a plurality of annular bending parts surrounding the inner tank body are arranged on the outer part of the inner tank body from top to bottom, the annular bending parts being recessed towards the inside of the inner tank body and being arc-shaped transitions.
[0012] Based on the above technical scheme, in the process of feed falling, the feed gradually slides along the arc-shaped transition surface of the annular bending part, thereby generating a collision and bouncing between the feed and the tank wall of the inner tank body, thereby changing the way of the feed flow path to enhance the flowability of the feed to ensure uniform distribution of the feed. When the heating medium is injected into the interlayer cavity, the presence of the annular bending part increases the contact area between the inner tank body and the interlayer cavity, so that the heat can be more uniformly transmitted to the inside of the inner tank body, thereby improving the heating efficiency and ensuring that the feed always maintains an appropriate temperature during storage. The annular bending part can also be used as a reinforcing rib to enhance the overall structural strength of the inner tank body, so that it can withstand greater internal pressure or external load.
[0013] Preferably, the tank side wall of the outer tank body is provided with a filling port and a discharge port communicating with the interlayer cavity, and an electric resistance heating ring is further sleeved outside each annular bending part.
[0014] Based on the above scheme, the design of the filling port and the discharge port provides a convenient operation mode for the injection and discharge of the medium in the sandwich cavity, that is, by using the filling port, the operator can inject hot water or other heating medium (heat-conducting silicone oil, etc.) into the sandwich cavity through the filling port to quickly raise the temperature of the inner tank body, thereby effectively preventing the feed from caking or getting wet, and after use, the medium is discharged through the discharge port, which is convenient for cleaning and long-term maintenance of the equipment.
[0015] Secondly, the resistance heating ring further enhances the temperature control capability of the equipment, and the resistance heating ring is directly attached to the outer surface of the annular bending part, which can directly heat the heating medium in the sandwich cavity by electric heating, so that the inner tank body is always heated. And because the annular bending part itself increases the contact area between the inner tank body and the sandwich cavity, the heat generated by the resistance heating ring and the heating medium can be more evenly transmitted to the inside of the inner tank body, avoiding the problem of local overheating or uneven heating that may exist in traditional heating methods, ensuring that the feed storage environment is always in an appropriate temperature range.
[0016] More preferably, the upper part of the outer tank body is provided with a feed hopper extending downward and penetrating the inner tank body, and the feed inlet position of the feed hopper is hingedly connected with a sealing door, and an auxiliary discharging piece is arranged in the middle of the upper part of the feed hopper.
[0017] The auxiliary discharging piece comprises a sleeve connected with the two sides of the feed hopper through a rotating support at the bottom, a rotating shaft is arranged in the inside of the sleeve and rotationally connected with the sleeve, a helical blade is arranged at the bottom end of the rotating shaft, and the outer dimension of the helical blade is smaller than the dimension of the valve cavity flow channel.
[0018] Based on the above scheme, through the feed hopper, the operator can easily add feed to the inner tank body, and through the sealing door, the feed hopper can be closed after adding feed, thereby realizing sealed storage of the feed in the inner tank body. At the same time, the auxiliary discharging piece is beneficial for the operator to form a stable feed flow when discharging the feed, thereby facilitating smooth discharge of the feed. Specifically, when discharging the feed, the operator can pull the sleeve to be located directly above the feed hopper through the rotating support, and open the sealing door, and then rotate the rotating shaft, so that the rotating shaft gradually slides and rotates through the sleeve and finally enters the inner tank body. When the operator rotates the ball valve core to open the discharge valve, the bottom end of the rotating shaft can also enter the valve cavity flow channel, and as the rotating shaft rotates, the helical blade at the bottom end of the rotating shaft also rotates, forming an effect similar to "screw conveying", so as to uniformly disperse and push the feed particles downward, avoiding the situation that the feed is stuck in the discharge valve due to insufficient gravity or poor flowability.
[0019] Specifically, cleaning doors are installed outside the cleaning ports on both sides of the valve housing.
[0020] Through the setting of the cleaning door, the operator can open the cleaning door to clean and collect the residual feed particles in the ball valve core internal dropping channel, so that the feed particles are prevented from being damaged by mildew, thereby further improving the use effect of the storage equipment and saving feed.
[0021] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0022] 1. The utility model discloses a design of interlayer cavity between the inner tank body and the outer tank body can significantly improve the storage environment of feed, specifically, the interlayer cavity can be used as a heat preservation layer or a heating medium channel, by injecting hot water, hot air or other heating medium in the interlayer cavity, the feed can be prevented from caking or mildewing due to temperature changes, especially in cold seasons or humid environments, this design can ensure that the feed remains dry and at a suitable temperature, thereby avoiding the loss of nutrients and reducing the risk of pig diseases caused by mildew of the feed.
[0023] 2. The utility model discloses a discharge valve with a spherical valve core design, compared with the traditional gate valve or plate valve structure, the spherical valve core inside is rotated to open and close, thereby effectively avoiding the problem of traditional valve plate crushing feed particles when closing the valve, thereby reducing the generation of powder dust, and the spherical valve core reduces the gap between the valve and the valve shell, preventing feed powder dust from accumulating in the gap and causing mildew, thereby greatly reducing the risk of feed contamination. In addition, by setting cleaning ports on both sides of the valve shell, after the spherical valve core is rotated to close, the cleaning ports can be used to clean and collect the feed particles remaining in the dropping channel inside the spherical valve core, to further reduce the risk of feed mildew and contamination. BRIEF DESCRIPTION OF DRAWINGS
[0024] The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model, constitute a part of the application, and do not constitute a limitation to the embodiments of the utility model. In the drawings:
[0025] Figure 1 It is a whole external main view structural schematic diagram of the utility model;
[0026] Figure 2 It is a whole external side view structural schematic diagram of the utility model;
[0027] Figure 3 It is a top view structural schematic diagram of the utility model;
[0028] Figure 4 It is an internal structure schematic diagram of the utility model, which aims to show the specific structure inside;
[0029] Figure 5The enlarged structure schematic view of the discharge valve in the closed state of the utility model.
[0030] The signs represented by the reference signs are: 1, outer tank body; 11, filling opening; 12, discharge opening; 13, feeding hopper; 14, sealing door; 2, inner tank body; 21, annular bending part; 22, resistance heating ring; 3, interlayer cavity; 4, discharge hopper; 5, discharge valve; 51, valve housing; 52, valve cavity flow channel; 53, ball valve core; 54, blanking passage; 6, cleaning opening; 7, rotating handle; 81, sleeve; 82, rotating support; 83, rotating shaft; 84, helical blade. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with examples and drawings, and the illustrative implementation mode and its description of the utility model are only used for explaining the utility model and not as a limitation on the utility model. EXAMPLE
[0032] As Figures 1 to 5 shown, the utility model discloses a kind of feed storage equipment for live pig breeding, including outer tank body 1 and inner tank body 2, interlayer cavity 3 is equipped between the tank body and outer tank body 1, the bottom middle of the inner tank body 2 is equipped with the discharge hopper 4 extending to the bottom of outer tank body 1, discharge valve 5 is equipped at the outlet end position of the discharge hopper 4;
[0033] The discharge valve 5 includes valve housing 51, the inside of the valve housing 51 is equipped with the valve cavity flow channel 52 being integrally formed and being communicated with the discharge hopper 4, the middle position of the valve cavity flow channel 52 is spherical cavity, ball valve core 53 is adaptively equipped in the inside of spherical cavity, blanking passage 54 is penetrated in the inside of the ball valve core 53 and is communicated with the valve cavity flow, and the ball valve core 53 is realized to the valve cavity flow channel 52 by rotation setting and is connected / disconnected.
[0034] Cleaning opening 6 is also equipped with the valve cavity flow channel 52 on both sides of the valve housing 51.
[0035] Based on the above technical example, by the design of interlayer cavity 3 between inner tank body 2 and outer tank body 1, the storage environment of feed can be significantly improved, specifically, the interlayer cavity 3 can be used as a heat preservation layer or a heating medium channel, by injecting hot water, hot air or other heating medium in the interlayer cavity 3, the caking or mildewing phenomenon of feed due to temperature change can be prevented, especially in cold season or humid environment, this design can ensure that feed remains dry and suitable temperature, so as to avoid nutrient loss and reduce the risk of pig disease caused by feed mildewing;
[0036] Meanwhile, in the present embodiment, the discharge valve 5 adopts a spherical valve core design. Compared with the traditional gate valve or plate valve structure, the spherical valve core 53 mainly utilizes a rotary switch mode, thereby effectively avoiding the problem of traditional valve plates crushing feed particles due to extrusion when the valve is closed, thereby reducing the generation of powder dust, and the spherical valve core 53 reduces the gap between the valve and the valve shell, avoiding the accumulation of feed powder dust in the gap and causing mold to occur, thereby greatly reducing the risk of feed contamination. In addition, by providing cleaning ports 6 on both sides of the valve shell 51, the feed particles remaining in the discharge channel 54 inside the spherical valve core 53 can be cleaned and collected after the spherical valve core 53 is rotated and closed, thereby further reducing the risk of feed mold contamination.
[0037] In a further embodiment, in Figure 1 It has been shown that the valve shell 51 is provided with a rotating handle 7 in the middle of the outside, one end of the rotating handle 7 extends into the valve cavity flow channel 52 and is connected with the spherical valve core 53.
[0038] In particular, by providing the rotating handle 7, the operating personnel can rotate the rotating handle 7 to drive the spherical valve core 53 to rotate, so as to realize the opening or closing of the discharge valve 5.
[0039] In a further embodiment, in Figure 4 It has been shown that the tank body 2 is provided with a plurality of annular bending portions 21 around the tank body 2 from top to bottom, the annular bending portions 21 are recessed to the inside of the tank body 2 and are arc-shaped transitions.
[0040] Based on the above embodiments, during the falling of the feed, it will gradually slide along the arc-shaped transition surface of the annular bending portion 21, thereby generating a collision bounce between the tank wall of the inner tank body 2, thereby changing the way of the feed flow path to enhance its flowability, to ensure that the feed can be evenly distributed. When the heating medium is injected into the interlayer cavity 3, the presence of the annular bending portion 21 increases the contact area between the inner tank body 2 and the interlayer cavity 3, so that the heat can be more uniformly transmitted to the inside of the inner tank body 2, thereby improving the heating efficiency, ensuring that the feed can always maintain a suitable temperature during storage. It can also be used as a reinforcing rib to enhance the overall structural strength of the inner tank body 2, so that it can withstand greater internal pressure or external load.
[0041] As a preferred embodiment, in Figures 1 to 4 It has been shown that the tank body 1 is provided with a filling port 11 and a discharge port 12 which are in communication with the interlayer cavity 3, and an electric resistance heating ring 22 is further sleeved outside each annular bending portion 21.
[0042] Based on the above embodiment, the design of the filling port 11 and the discharge port 12 provides a convenient operation mode for the injection and discharge of the medium in the sandwich cavity 3, that is, by using the filling port 11, the operator can inject hot water or other heating medium (heat-conducting silicone oil, etc.) into the sandwich cavity 3 through the filling port 11 to quickly raise the temperature of the inner tank body 2, thereby effectively preventing the feed from being damp and moldy and clumped, and after use, the shell discharges the heating medium through the discharge port 12, which is convenient for cleaning and long-term maintenance of the equipment.
[0043] Secondly, the resistance heating ring 22 externally sleeved on the annular bending part 21 further enhances the temperature control capability of the equipment. In addition, for the resistance heating ring 22, it is a common electric heating element, which is usually made of a resistance wire made of nickel-chromium alloy or iron-chromium-aluminum alloy wound on a high-temperature-resistant insulating base material (such as ceramic or mica sheet), and packaged by a metal shell. Similar products on the market, such as industrial silicone heating bands (which internally embed evenly distributed resistance wires and externally wrap a high-temperature-resistant silicone layer, which not only ensures good heat conduction efficiency, but also has excellent insulation and durability), can also be used in the embodiment. By directly attaching the resistance heating ring 22 to the outer surface of the annular bending part 21, the heating medium in the sandwich cavity 3 can be heated by electric heating, so that the inner tank body 2 is always heated. Since the annular bending part 21 itself increases the contact area between the inner tank body 2 and the sandwich cavity 3, the heat generated by the resistance heating ring 22 and the heating medium can be more uniformly transmitted to the inside of the inner tank body 2, avoiding the problems of local overheating or uneven heating that may exist in traditional heating methods, and ensuring that the feed storage environment is always in an appropriate temperature range.
[0044] More preferably, one implementation manner is as shown in Figures 1 to 4 The upper part of the outer tank body 1 is provided with a feed hopper 13 extending downward and penetrating the inner tank body 2, and the feed inlet position of the feed hopper 13 is hingedly connected with a sealing door 14, and an auxiliary discharging piece is arranged in the upper middle part of the feed hopper 13.
[0045] The auxiliary discharging piece includes a sleeve 81 rotatably connected to both sides of the feed hopper 13 through a rotating support 82, a rotating shaft 83 rotatably connected to the inside of the sleeve 81, a helical blade 84 arranged at the bottom end of the rotating shaft 83, and the outer dimension of the helical blade 84 is smaller than the size of the valve cavity flow channel 52.
[0046] Based on the above embodiment, through the feeding hopper 13, the operator can conveniently add feed into the inner tank 2, and after adding the feed, the sealing door 14 can be closed to seal the feeding hopper 13, so as to realize the sealed storage of the feed in the inner tank 2, and the auxiliary discharging part can help the operator to form a stable feed flow when discharging the feed, so as to facilitate the smooth discharge of the feed. Specifically, when discharging the feed, the operator can rotate the bracket 82 (i.e., the two ends of the bracket 82 are located on the two sides of the feeding hopper 13 and are rotatably connected to the feeding hopper 13 through rotating pins), pull the sleeve 81 to be located above the feeding hopper 13, open the sealing door 14, and then rotate the rotating shaft 83 to gradually slide and rotate through the sleeve 81 and finally enter the inner tank 2. When the operator rotates the ball valve core 53 to open the discharge valve 5, the bottom end of the rotating shaft 83 can also enter the valve cavity flow channel 52, and the helical blade 84 at the bottom end thereof rotates with the rotation of the rotating shaft 83, forming a "screw conveying" effect to uniformly disperse and push the feed particles downward, avoiding the situation that the feed particles are stuck in the discharge valve 5 due to insufficient gravity or poor flowability.
[0047] As a specific implementation, a cleaning door is installed outside the cleaning port 6 on both sides of the valve housing 51.
[0048] Through the setting of the cleaning door, the operator can open the cleaning door to clean and collect the remaining feed particles in the discharging channel 54 inside the ball valve core 53 which are not discharged in time, avoiding the mold damage of the feed particles, thereby further improving the use effect of the storage device and saving feed.
[0049] As a further description of the above embodiment, this embodiment will describe the use process of the storage device in detail.
[0050] Specifically, when operating, the operator opens the sealing door 14 at the top of the feeding hopper 13, pours the feed into the feeding hopper 13, and then closes the sealing door 14 to ensure that the feed in the inner tank 2 is in a sealed state, avoiding the entry of external moisture or contaminants. At the same time, in order to keep the feed dry and avoid mold damage caused by damp clumping, the operator can inject hot water or heat-conducting silicone oil and the like into the interlayer cavity 3 through the filling port 11, and also can connect the resistance heating ring 22 to heat the interlayer cavity 3, thereby keeping the inner tank 2 at an appropriate temperature. The annular bent portion 21 not only increases the contact area between the interlayer cavity 3 and the inner tank 2, improves the heating efficiency, but also optimizes the flow path of the feed through the arc transition surface, so that the feed can be uniformly distributed inside the inner tank 2.
[0051] When the feed needs to be discharged, the operator can pull the sleeve 81 to be located directly above the feed hopper 13 by rotating the support 82, open the sealing door 14, and then rotate the rotating shaft 83, so that the rotating shaft 83 gradually slides and rotates into the inner tank body 2 through the sleeve 81. When the operator rotates the ball valve core 53 to open the discharge valve 5, the bottom end of the rotating shaft 83 can also enter the valve cavity flow channel 52, and as the rotating shaft 83 rotates, the helical blade 84 at the bottom end rotates to form a "screw conveying" effect, so that the feed particles can smoothly flow out through the discharge hopper 4.
[0052] The above detailed description of the specific embodiments, the purpose, technical solutions and beneficial effects of the present application are further described in detail. It should be understood that the above is only a specific embodiment of the present application and does not limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that the structure, proportion, size, etc. shown in the drawings of the present application are schematic drawings, which are only used to cooperate with the disclosed content of the specification for understanding and reading by those skilled in the art, and are not used to limit the implementation conditions of the present application. Therefore, any modification of the structure, change of the proportion relationship or adjustment of the size, which does not affect the effects and purposes of the present application, should still fall within the scope of the disclosed technical content of the present application. At the same time, the terms such as "up", "down", "left", "right", "middle" and the like in the specification are only used for clear description, and are not used to limit the implementation scope of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the implementation scope of the present application.
Claims
1. A feed storage device for pig farming, comprising an outer tank body (1) and an inner tank body (2), characterized in that, A cavity (3) is arranged between the inner tank (2) and the outer tank (1), and a discharge hopper (4) is arranged in the middle of the bottom of the inner tank (2) and extends to the bottom of the outer tank (1), and a discharge valve (5) is arranged at the outlet end of the discharge hopper (4); The discharge valve (5) comprises a valve housing (51), and a valve cavity flow channel (52) is arranged in the valve housing (51) and is integrally formed and communicates with the discharge hopper (4), the middle of the valve cavity flow channel (52) is in a spherical cavity, a ball valve core (53) is arranged in the spherical cavity, a blanking channel (54) penetrates through the ball valve core (53) and communicates with the valve cavity flow channel (52), and the ball valve core (53) is arranged to be rotatable to realize the opening and closing of the valve cavity flow channel (52). Cleaning ports (6) are arranged on both sides of the valve housing (51) and communicate with the valve cavity flow channel (52).
2. The feed storage device for raising pigs according to claim 1, wherein A rotating handle (7) is arranged in the middle of the outer part of the valve housing (51), and one end of the rotating handle (7) extends into the valve cavity flow channel (52) and is connected with the ball valve core (53).
3. The feed storage device for pig farming according to claim 1, characterized in that, A plurality of annular bending parts (21) are arranged on the outer part of the inner tank (2) from top to bottom and surround the inner tank (2) once, the annular bending parts (21) are concave to the inside of the inner tank (2) and are in arc transition.
4. The feed storage device for raising pigs according to claim 3, wherein The side wall of the outer tank (1) is provided with a filling port (11) and a discharge port (12) which communicate with the cavity (3), and an electric resistance heating ring (22) is arranged outside each annular bending part (21).
5. The feed storage device for raising pigs according to claim 1, wherein The upper part of the outer tank (1) is provided with a feeding hopper (13) which extends downward and penetrates the inner tank (2), a sealing door (14) is hingedly connected to the feeding port of the feeding hopper (13), and an auxiliary blanking part is arranged in the middle of the upper part of the feeding hopper (13); The auxiliary blanking part comprises a sleeve (81) which is rotatably connected to both sides of the feeding hopper (13) through a rotating support (82), a rotating shaft (83) is arranged in the sleeve (81) and is rotatable in cooperation with the sleeve (81), a helical blade (84) is arranged at the bottom end of the rotating shaft (83), and the outer dimension of the helical blade (84) is smaller than the dimension of the valve cavity flow channel (52).
6. The feed storage device for pig farming according to claim 1, wherein Cleaning doors are arranged outside the cleaning ports (6) on both sides of the valve housing (51).